Title of Invention	PACKAGED WASTEWATER AND RECYLE SYSTEM
Abstract	17 ABSTRACT Title: PACKAGED WASTEWATER TREATMENT AND RECYCLE SYSTEM A packaged wastewater treatment and recycle system suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment, the said wastewater treatment system comprises a basic module having a plurality of raw wastewater pumps (6, 11, 19) and some optional add-on modules for filtration and adsorption, softener, filter press (4) etc., the entire system being a pre-fabricated soundless unit and a packaged as well as containerized assembly mounted on a skid type base, carries out biochemical oxidation using a rotating media (12) attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost, and elements like a geared motor (13), pumps (6, 11, 19) and plurality of support bearings constitute moving parts thereby making the said system's maintenance, e.g., lubrication and servicing etc., convenient. Fig. No.: 1 . To The Controller of Patents, The Patent Office, Mumbai

Title of Invention

PACKAGED WASTEWATER AND RECYLE SYSTEM

Abstract

17 ABSTRACT Title: PACKAGED WASTEWATER TREATMENT AND RECYCLE SYSTEM A packaged wastewater treatment and recycle system suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment, the said wastewater treatment system comprises a basic module having a plurality of raw wastewater pumps (6, 11, 19) and some optional add-on modules for filtration and adsorption, softener, filter press (4) etc., the entire system being a pre-fabricated soundless unit and a packaged as well as containerized assembly mounted on a skid type base, carries out biochemical oxidation using a rotating media (12) attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost, and elements like a geared motor (13), pumps (6, 11, 19) and plurality of support bearings constitute moving parts thereby making the said system's maintenance, e.g., lubrication and servicing etc., convenient. Fig. No.: 1 . To The Controller of Patents, The Patent Office, Mumbai

Full Text	FORM 2 THE PATENTS ACT, 1970 (39 of 1970) COMPLETE SPECIFICATION PACKAGED WASTEWATER TREATMENT AND RECYCLE SYSTEM Dr. Shirish Naik An Indian National, NAIK ENVIRONMENTAL ENGINEERS PVT. LTD. A686, NAIKENVIRO House, Pavane Indl. Area, Khairne, Navi Mumbai 400705, Maharastra, India. The following specification particularly describes the nature of the invention and the manner in which it is to be performed: 2 BACKGROUND OF THE INVENTION 1. FIELD OF THE INVENTION The present invention relates broadly to a packaged wastewater treatment with a provision for recycle and reuse of treated wastewater, and more particularly, to a packaged wastewater treatment and recycle system suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment. 2. DESCRIPTION OF THE PRIOR ART Known relevant prior arts for wastewater treatment and recycle system include US Pat. Application No. 2005016910 of Plante published on 2005-01-27; Australian Pat. Application No. 2002218965 of Ma Mingyi published on 2003-07-24; US Pat. No. 6,235,196 to Zhou et al dated 05/22/2001; US Pat. No. 6,585,895 to Smith et al dated 07/01/2003; US Pat. Application No. 20030226805 of Chi et al dated 06/06/2002; US Pat. Application No. 20020158011 of Yamada dated 11/20/2001; EP Pat. Application No. 1,199,284 of Sanyo Electric Co., Ltd. dated 03/21/2001; US Pat. No. 5,264,120 to Graves dated 11/23/1993; EP Pat. Application No. 1,007,481 of Advent Corporation dated 02/11/1997; US Pat. No. 6,346,197 to Stephenson et al dated 02/12/2002; US Pat. No. 5,456,829 to Brown dated 10/10/1995; and US Pat. No. 6,796,250 to Greene dated 2004-09-28. There are few patents relating to rotating biological contactors. This includes US Pat. No. 4,532,035 dated 07/30/1985 to Fuchs et al.; US Pat. No. 4,568,457 dated 02/04/1986 to Sullivan; US Pat. No. 4,737,278 dated 04/12/1988 to Miller; WO Pat. Application No. 1999035097 dated 01/04/1999 of Siskos; US Pat. No. 4,721,570 dated 01/26/1988 to Ankaitis; WO Pat. Application No. 1995033694 dated 05/02/1995. US Pat. Application No. 2005016910 of Plante published on 2005-01-27 narrates a system being used for filtering and recycling the waste water collected and stored in a recuperating tank, in which a pump moves the waste water out of the recuperating tank via a water outlet with valve and a recuperating return line through a liquid filtration system, a ground water filter, a separator that separates oil from the water for it directing via a conduit and through a main drain, and thereafter discharged into a conventional septic tank or municipal sewage. Furthermore, the recycled water circulating through separator is directed via a second pump for keeping the water pressure through a fading water filter, a recycled water line for supplying a tank transferring water via a toilet and laundry, and through from the recycled water feeding system. The recycled water being used for flushing toilet will be directed toward a conduit via the main drain, and thereafter discharged into the conventional septic tank or municipal sewage. 3 Australian Pat. Application No. 2002218965 of Ma Mingyi published on 2003-07-24 discloses a system for cooking, washing wastewater treatment. The system contains washing device that bringing wastewater, and toilet seat that need not clean water. Therein, the influent of washing device connected from clean water pipeline in the building, the draining of toilet seat connected with sewer of building. Between the draining of washing device and the influent of toilet seat, series connection with filter, storage tank, pump and press tank in orderly. The filter has another drain, connected into sewer of building. With the system for cooking, washing waste water treatment of the invention, would be treatment the waste water of washing device for further sterilize into clean water for toilet seat, and use clean water sparingly. US Pat. No. 6,235,196 to Zhou et al dated 05/22/2001 describes a bioprocessing system for a feed such as wastewater. The system of US 6,235,196 comprises an anaerobic reactor subsystem, an aerobic reactor subsystem, and a recycle loop for partial recycling of the aerobic reactor subsystem effluent. The anaerobic reactor subsystem is capable of providing anaerobic processing of the wastewater in the substantial absence of aerobic processing of the wastewater. The anaerobic reactor subsystem can include a single anaerobic reactor or a plurality of reactors. The aerobic reactor subsystem is in direct communication with the anaerobic reactor subsystem, with the aerobic reactor subsystem being capable of providing aerobic processing of the wastewater in the substantial absence of anaerobic processing of the wastewater. The aerobic reactor subsystem processes the wastewater from the anaerobic reactor subsystem without intervening bioprocessing of the wastewater. As with the anaerobic subsystem, the aerobic reactor subsystem can include a single aerobic bioreactor or a plurality of reactors. The recycle loop partially recycles an effluent from the aerobic reactor subsystem to an influent of the anaerobic reactor subsystem. The recycle loop provides a means for pH regulation, dilution of the feed, and nitrite-nitrate removal. US Pat. No. 6,585,895 to Smith et al dated 07/01/2003 discloses a process for treating industrial wastewater that substantially eliminates the generation of excess solids in the system requiring mechanical removal. US Pat. Application No. 20030226805 of Chi et al dated 06/06/2002 teaches a method of wastewater treatment with biological active carbon using recycled oxygen-enriched water and apparatus used therein. Their wastewater treatment method includes an influent water to an oxygen-supply tank for aeration, the oxygen-enriched water from the oxygen-supply tank into the bottom of an activated carbon tank, so that the oxygen-enriched water flows upward and expands the activated carbon bed. Both the US Pat. Application No. 20020158011 of Yamada dated 11/20/2001 and EP Pat. Application No. 1,199,284 of Sanyo Electric Co., Ltd. dated 03/21/2001 delineate a wastewater treatment apparatus and a method for recycling material for wastewater treatment. 4 A method and apparatus for recycling wastewater is described in US Pat. No. 5,456,829 to Brown dated 10/10/1995. Brown's apparatus for recycling wastewater solutions includes a treatment tank and an air-operated pump and piping system for pumping wastewater contaminated with oil, heavy metals, and suspended solids from industrial equipment such as a jetwasher to the treatment tank, and for subsequently returning the purified water solution to the industrial equipment for reuse. US Pat. No. 4,532,035 states a rotating biological contactor for the biological purification of waste water. With contactor bodies formed of spirally wound up corrugated panels providing ducts in the region of the corrugation profiles which are alternately filled with waste water and air, there is a problem to completely fill the ducts and to provide a continuous flow through the ducts in a body of simple and rigid construction. In order to solve this problem, according to the said US Pat. No. 4,532,035, the corrugation profiles of at least one corrugated panel are inclined at a predetermined angle relative to the axis of the contactor body. Thereby, the disadvantages of the known, mechanically unstable constructions comprising a tube bundle are avoided and an intensive flow of waste water and air within the ducts is achieved. Advantageously, the corrugation profiles of winding layers arranged radially above each other or axially beneath each other comprise different inclination angles, especially angles which are opened contrary to each other. In US Pat. No. 4,568,457 an industrial waste anaerobic digester is disclosed having separate sections therein, in which the acid forming and gas forming phases of the digestion process can occur separately under conditions optimized for each phase. A rotating biological contactor is provided in each section for increasing the liquid/gas interface to facilitate the anaerobic reaction. A series of partitions is provided in each section to create zones in which the waste concentration is extremely high and on which the biota can react at maximal reaction rates. The C02 produced in the acid forming phase is used in both acid and gas forming sections to mix and achieve pH adjustment, and the methane can be used in the gas forming sections for mixing. A thermophilic chamber in the center of the tank is surrounded by the mesophyllic chamber to minimize and utilize conductive heat loss. A modular rotating biological contactor apparatus is provided in US Pat. No. 4,737,278 which utilizes a plurality of hemicylindrical trough sections, a plurality of bulkhead means interconnecting adjacent trough sections, and a pair of endplate means as subassemblies. These subassemblies are prefabricated and adapted for simple and easy interconnection with one another by means of integrally formed disengagable associatable interfitting means. Using these subassemblies, a plurality of different configurational possibilities for rotating biological contactor apparatus are achievable. WO Pat. Application No. 1999035097 refers to the capacity of an aerobic bioconversion system for the wastewater treatment of an olive oil processing 5 plant, concerning the phytotoxicity reduction by means of a biocontactor having various shapes, which is either rotating and in line or in circle moving, while the treated wastewater is stationary or only statistically rotating, while the treated wastewater is moving. WO Pat. Application No. 1999035097 refers to an additional transport motion either of the biocontactor, implemented by placing the biocontactor on a trolley-frame, or of the treated wastewater with the rotating biocontactor remaining fixed, implemented by kinetic energy addition to the liquid (in all its treatment phases, especially while the gel phase) by means of mixers etc. The additional transport motion of the biocontactor allows treatment of a multiple wastewater volume. The suggested capacity increase allows for multiple greater efficiency of the whole plant in constructional and operating point of view, comparing with the biocontactor of the former technique. WO Pat. Application No. 1999035097 is applicable for bioreactors with aerobic microorganisms, whose breathing time can be practically utilized for the additional suggested motion (linear or circular) of either the biocontactor or the treaded wastewater, as is the case in olive oil processing plants. A method and apparatus for enhancing the settleability of suspended wastewater solids is provided in US Pat. No. 4,721,570 for a wastewater treatment system comprising a primary clarifier apparatus, a compartmentalized, sequential secondary biological treatment apparatus such as a rotating biological contactor tank, and a secondary clarifier, wherein a portion of waste sludge from the clarifier is diverted to compartments of the rotating biological contactor tank to enhance the flocculation of the suspended waste solids. The diverted sludge particles serve as flocculation nuclei which promote settleability and lower turbidity once the effluent reaches the secondary clarifier. WO Pat. Application No. 1995033694 discloses a media panel for a rotating biological treatment apparatus for treating waste water, the rotating biological treatment apparatus including a rotatable shaft having a longitudinal axis and a plurality of media panel assemblies stacked on the shaft and a plurality of media panels mounted on the hub, the media panel comprising a planar member having a first side and a second side, and the planar member being mountable on the hub to extend normal to the longitudinal axis for the shaft to form a portion of a generally disk-shaped media panel assembly extending normal to the longitudinal axis of the shaft; the first side of the planar member including at least one first set of alternating grooves and ridges, and the second side of the media panel including at least one second set of grooves and ridges; the grooves and ridges of the first and second sets of alternating grooves and ridges each having a first radially inner portion, a second radially inner portion spaced apart from the first radially inner portion, and a radially outer portion between and spaced radially outwardly with respect to the first and second radially inner portions when the media panel is mounted on the hub. After an exhaustive study on both relevant and related patent documents and on existing conventional wastewater treatment and recycle systems it has been found that there is a need for a packaged wastewater treatment and 6 recycle system suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment. Moreover, the operation of the conventional wastewater treatment and recycling systems are not simple and the conventional systems require significant human intervention. There are many problems in the existing wastewater treatment and recycling systems which will be clear from the objectives of the present invention. Thus, it would be desirable to devise a wastewater treatment and recycle system that obviates the existing problems of the prior arts. 3. SUMMARY AND OBJECTS OF THE INVENTION Accordingly, the present invention is directed to propose a packaged wastewater treatment system with an add-on module for recycle suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment. An object of the present invention is to provide a packaged wastewater treatment and recycle system which carries out biochemical oxidation using an attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost. Another object of the present invention is to provide a packaged wastewater treatment and recycle system in which operation is extremely simple and once stabilized, the said system can be left to itself with very little human intervention. Another further object of the present invention is to provide a packaged wastewater treatment and recycle system where the treated effluent meets the most stringent of standards for disposal or recycle. Yet another object of the present invention is to provide a packaged wastewater treatment and recycle system having wide choice of installation options, e.g., in basements, underground, on terraces etc. Still another object of the present invention is to provide a packaged wastewater treatment and recycle system having low power input and housed in a corrosion and rust-proof container. To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, the packaged wastewater treatment and recycle system suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment comprising a basic module, the said wastewater treatment system is characterized by that: 7 the said basic module having a plurality of raw wastewater pumps of non-clog type; biological media complete with mounting and a biofilm-substrate contacting system, geared drive assembly; a biofilm separator in the form of lamella modules; a disinfectant dosing system; a flow meter; a plurality of pressure gauges; an air vent of 150 mm diameter with exhaust fan connected to main exhaust duct; a plurality of raw sewage suction pipes (9) connected to raw sewage tank; a suction strainer; a manhole of 600 mm diameter; a cover suitably designed for the whole system; a RCC cover slab and a plurality of inverted tee RCC beams; a digested sludge withdrawal pipe; a sludge dewatering trolley; a weather-proof control panel, cabling etc.; the entire system being a pre-fabricated soundless unit and a packaged as well as containerized assembly mounted on a skid type base, carries out biochemical oxidation using an attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost, and elements like a geared motor, a pump and plurality of support bearings constitute moving parts thereby making the said system's maintenance, e.g., lubrication and servicing etc., convenient. Another embodiment of the said packaged wastewater treatment and recycle system, according to the present invention, suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment comprising a basic module, the said wastewater treatment system comprises: the said basic module having a plurality of raw wastewater pumps of non-clog type; biological media complete with mounting and a biofilm-substrate contacting system, geared drive assembly; the media consisting of either of or a combination of the following: the said basic module having a plurality of raw wastewater pumps of non-clog type; biological media complete with mounting and a biofilm-substrate contacting system, geared drive assembly; the media consisting of either of or a combination of the following: biological media complete with mounting and a biofilm-substrate contacting system, geared drive assembly, the said media consisting of either of or a combination of the following: a) Red Mud Plastic (RMP) corrugated sheets with a clear spacing of 10-15 millimetres bound together in the form of disk packs of various lengths depending on the intended application, the RMP 8 sheets being mounted on a large number of tie rods of steel penetrating the sheets perpendicular to them with the tie rods being supported at both ends by driving disks in which the tie rods being securely fastened to the driving disks on both sides by multiple nuts, the driving disks being connected to the shaft by a steel hub fastened by a key way arrangement thereby transmitting the rotary motion from the helical geared motor to the disk pack through the driving disks, and steel structural members being fixed lengthwise to the driving disks providing additional support to the disk pack; b) a media similar to the system described in item (a) above employing a large number of polypropylene or polystyrene moulded disks with monolithic spacers mounted on tie rods of steel to form a single assembly fixed to the driving disks at both ends as described in item (a) above; a large number of such assemblies being mounted in a carom board type of design when viewed from the side of the driving disks. a biofilm separator in the form of lamella modules fabricated out of RMP sheets mounted at 55-60 degrees inclination with the horizontal with clear spacing between adjacent sheets ranging from 20-50 millimetres, the said sheets being mounted on a large number of steel rods which penetrate them at the desired angle with each end of the said rods mounted on a sturdy steel frame to form self supporting modules placed in the biofilm separator compartment; a disinfectant dosing system; a flow meter; a plurality of pressure gauges; an air vent of 150 mm diameter with exhaust fan connected to main exhaust duct; a plurality of raw sewage suction pipes connected to raw sewage tank; a suction strainer; a manhole of 600 mm diameter; a cover suitably designed for the whole system; a RCC cover slab and a plurality of inverted tee RCC beams; a digested sludge withdrawal pipe; a sludge dewatering trolley; a weather-proof control panel, cabling etc.; an efficient filtration and adsorption add-on module having a pressure sand filter and an activated carbon column with a plurality of feed pumps, all mounted on the said skid; a softener add-on module having a resin based softener for generating soft water from treated effluent; a filter press or a decanter centrifuge add-on module for de-watering and compressing sludge into a dense cake having a progressive cavity feed pump; the entire system being a pre-fabricated soundless unit and a packaged as well as containerized assembly mounted on a skid type base, carries out biochemical oxidation using an attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of 9 wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost, and elements like a geared motor, a pump and plurality of support bearings constitute moving parts thereby making the said system's maintenance, e.g., lubrication and servicing etc., convenient. The said packaged wastewater treatment and recycle system, according to the present invention, wherein raw wastewater is collected in a sump and pumped at a steady rate where organic matter in the wastewater comes into intimate contact with a very large area of a rotating biofilm residing on synthetic disks having a very high specific surface thereby supporting a very high microbial population. The said packaged wastewater treatment and recycle system, according to the present invention, wherein aeration is achieved by rapid surface renewal of thin films of wastewater thereby sloughing off the said film's thickness replacing with a new film and the produced mixed liquor containing the said biofilm is passed through a biofilm separator. The said packaged wastewater treatment and recycle system, according to the present invention, wherein separated biofilm is recycled to the sludge zone of the said collection tank and effluent is pumped through a pressure sand-filter and an activated carbon column for further polishing in which the said treated effluent is to be recycled for toilet flushing and gardening etc. The said packaged wastewater treatment and recycle system, according to the present invention, wherein excess sludge from the sludge zone of the said collection tank is drawn out once in 30 days and de-watered on the said sludge trolley or in a filter press and a control section or flow meter provides a direct reading of the flow-rate. The said packaged wastewater treatment and recycle system, according to the present invention, wherein the entire operation of the said system is carried out with very insignificant human intervention and a control panel takes care of the operation of the said system meeting the most stringent of standards for recycle. The said packaged wastewater treatment and recycle system, according to the present invention, wherein the geometry of the entire unit of the said system is tailored to suit space constraints having a wide choice of installation options, e.g., in basements, underground, on terraces etc. The said packaged wastewater treatment and recycle system, according to the present invention, wherein the system requires low power input in which process power input is at least less than 30% that of a conventional activated sludge system. The said packaged wastewater treatment and recycle system, according to the present invention, wherein the said packaged system may range from 1 10 m3 / day capacity to as large as 1000 m3 / day capacity and in multiples thereof. The said packaged wastewater treatment and recycle system, according to the present invention, wherein a rubberized epoxy coating ensures protection from corrosion and rusting of the entire unit and the design of the said system is optimized in such a way that the said system uses moving parts as minimum as required. The various features of novelty that characterise the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its uses, reference is made to the accompanying drawings and descriptive matter in which preferred embodiments of the invention are illustrated. 4. BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS A more complete understanding of the present embodiments and advantages thereof may be acquired by referring to the following description taken in conjunction with the accompanying drawing, in which like reference numbers indicate like features, and wherein: Fig. 1 is a diagram illustrating the plan view of the packaged wastewater treatment and recycle system according to the present invention; Fig. 2 is a sectional view cut along X-X direction of Fig. 1, according to the present invention; and Fig. 3 illustrates the sectional view cut along Y-Y direction of Fig. 1, according to the present invention. 5. DETAILED DESCRIPTION OF THE INVENTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS The packaged wastewater treatment and recycle system, according to the present invention, carries out biochemical oxidation using an attached growth aerobic biological system. The entire system, shown in Fig. 1, is a soundless unit. The system, according to the present invention, takes up atmospheric oxygen without any splashing and spraying of wastewater unlike aeration systems. The effluent is clarified meeting the most stringent standards with the greatest of ease. The entire system is a complete packaged and containerized assembly mounted on a "skid" type base. The system produces very little sludge - and that too in a completely mineralized form convertible into garden compost. Raw wastewater is collected in a tank (15) provided by the owner of the system, according to the present invention, and pumped at a steady rate into the system where organic matter in the wastewater comes into intimate 11 contact with a very large area of a rotating biofilm (12) residing on synthetic disks. The disks have a very high specific surface and hence support a very high microbial population. Aeration is achieved by rapid surface renewal of thin films of wastewater. As the film grows in thickness it sloughs off and a new film takes its place. Mixed liquor containing the said biofilm is passed through a biofilm separator (14). Separated biofilm is recycled to the sludge zone of the said collection tank (15). Where the treated effluent is to be recycled for toilet flushing and gardening etc., the effluent is pumped through a pressure sand filter and an activated carbon column for further polishing. Excess sludge from the sludge zone of the said collection tank (15) is drawn out once in 30 days and de-watered on sludge trolley or in a filter press (4). A control section (18) provides a direct reading of the flow-rate. The entire operation is extremely simple and the said system once stabilized, can be left to itself with very little human intervention. A control panel (18) takes care of the operation of the said system. The treated effluent meets the most stringent of standards for recycle. The system, according to the present invention, is elegantly designed with particular emphasis on compactness, aesthetics and ergonomics — suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. Even the geometry of the unit can be tailored to suit space constraints. The said system has wide choice of installation options, e.g., in basements, underground, on terraces etc. The fully enclosed design ensures an odour-free environment unlike conventional systems. The system, according to the present invention, requires low power input. The power input is at least less than 30% that of a conventional activated sludge system. The said packaged system, as for an example, ranges from 1m3/ day capacity to as large as 1000 m3 / day capacity and in multiples thereof. As the said system uses rubberized epoxy coating, the said coating gives excellent protection from corrosion and rusting. The design of the said system is optimized in such a way that the said system uses moving parts as minimum as required. Geared motor (13), pumps (6, 11, 19) and support bearings of the said system constitute the moving parts requiring lubrication and servicing — the easy accessibility of these makes maintenance very convenient. Installation of the said system is very easy as the said system is entirely prefabricated and is merely to be mounted at the site in the tank (15) constructed by the owner. The following Table shows space and power requirements of the basic module of the system, according to the present invention. SPACE AND POWER REQUIREMENT (basic module): FLOW,m3/day 25 50 75 700 150 200 300 400 500 750 7000 Power consumed, HP 1.5 1.5 2 2 3 3 5 6 6 8 10 Space required, m" 6 8 10 12 15 20 30 40 50 75 100 12 Rawwastewater collection tank/septic tank, vol— m3 15 25 30 50 75 100 150 200 250 375 500 Footprint area of collection tank, m 5 8 10 12 20 30 40 60 65 100 125 It may be noted that volume of raw wastewater collection tank (15) may be reduced depending on space constraints. The said system may be installed on cover slab (3) of collection tank (15) to save space. The top slab of collection tank (15) being at ground level enables effective use of space. While the principles of this invention have been described in connection with specific embodiment, it should be understood clearly that these descriptions are made only by way of example and are not intended to limit the scope of the invention. Following table shows the reference signs used in the accompanying drawings: Reference signs Description 1 Pressure sand filter 2 Activated carbon filter 3 Cover 4 Filter press 5 Raw sewage tank 6 Raw sewage pump 7 Manhole of 600 mm diameter 8 Suction strainer 9 Raw sewage suction pipe 10 Air vent of 150 mm diameter with exhaust fan 11 Progressive cavity pump 12 Rotating biodisk contactor (RBC) 13 Drive for rotating biodisk contactor 14 Lamella separator 15 Raw wastewater tank 16 RCC cover slab 17 Digesting sludge zone 18 Control panel 19 Filter feed pump 20 Inverted tee RCC beams 21 Digested sludge withdrawal pipe 13 I Claim: 1. A packaged wastewater treatment and recycle system suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment comprising a basic module, the said wastewater treatment system is characterized by that: the said basic module having a plurality of raw wastewater pumps (6) of horizontal centrifugal non-clog type; biological media complete with mounting and a biofilm-substrate contacting system, geared drive assembly; a biofilm separator in the form of lamella modules (14); a disinfectant dosing system; a flow meter; a plurality of pressure gauges; an air vent of 150 mm diameter with exhaust fan (10) connected to main exhaust duct; a plurality of raw sewage suction pipes (9) connected to raw sewage tank (5); a suction strainer (8); a manhole of 600 mm diameter (7); a cover (3) suitably designed for the whole system; a RCC cover slab (16) and a plurality of inverted tee RCC beams (20); a digested sludge withdrawal pipe (21); a sludge dewatering trolley; a weather-proof control panel (18), cabling etc.; the entire system being a pre-fabricated soundless unit and a packaged as well as containerized assembly mounted on a skid type base, carries out biochemical oxidation using an attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost, and elements like a geared motor (13), pumps (6, 11, 19) and plurality of support bearings constitute moving parts thereby making the said system's maintenance, e.g., lubrication and servicing etc., convenient. 2. A packaged wastewater treatment and recycle system suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment comprising a basic module, the said wastewater treatment system comprising: the said basic module having a plurality of raw wastewater pumps (6) of non-clog type; biological media complete with mounting and a biofilm-substrate contacting system (12), geared drive assembly, the said media consisting of either of or a combination of the following: 14 c) Red Mud Plastic (RMP) corrugated sheets with a clear spacing of 10-15 millimetres bound together in the form of disk packs of various lengths depending on the intended application, the RMP sheets being mounted on a large number of tie rods of steel penetrating the sheets perpendicular to them with the tie rods being supported at both ends by driving disks in which the tie rods being securely fastened to the driving disks on both sides by multiple nuts, the driving disks being connected to the shaft by a steel hub fastened by a key way arrangement thereby transmitting the rotary motion from the helical geared motor to the disk pack through the driving disks, and steel structural members being fixed lengthwise to the driving disks providing additional support to the disk pack; d) a media similar to the system described in item (a) above employing a large number of polypropylene or polystyrene moulded disks with monolithic spacers mounted on tie rods of steel to form a single assembly fixed to the driving disks at both ends as described in item (a) above; a large number of such assemblies being mounted in a carom board type of design when viewed from the side of the driving disks. a biofilm separator in the form of lamella modules (14) fabricated out of RMP sheets mounted at 55-60 degrees inclination with the horizontal with clear spacing between adjacent sheets ranging from 20-50 millimetres, the said sheets being mounted on a large number of steel rods which penetrate them at the desired angle with each end of the said rods mounted on a sturdy steel frame to form self supporting modules placed in the biofilm separator compartment; a disinfectant dosing system; a flow meter; a plurality of pressure gauges; an air vent of 150 mm diameter with exhaust fan (10) connected to main exhaust duct; a plurality of raw sewage suction pipes (9) connected to raw sewage tank (5); a suction strainer (8); a manhole of 600 mm diameter (7); a cover (3) suitably designed for the whole system; a RCC cover slab (16) and a plurality of inverted tee RCC beams (20); a digested sludge withdrawal pipe (21); a sludge dewatering trolley; a weather-proof control panel (18), cabling etc.; an efficient filtration and adsorption add-on module having a pressure sand filter (1) and an activated carbon column (2) with a plurality of feed pumps (19), all mounted on the said skid; a softener add-on module having a resin based softener for generating soft water from treated effluent; a filter press (4) or a decanter centrifuge add-on module for de-watering and compressing sludge into a dense cake having a progressive cavity feed pump (11); the entire system being a pre-fabricated soundless unit and a packaged as well as containerized assembly mounted on a skid type base, carries out 15 biochemical oxidation using an attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost, and elements like a geared motor (13), pump (6, 11, 19) and plurality of support bearings constitute moving parts thereby making the said system's maintenance, e.g., lubrication and servicing etc., convenient. 3. The system, as claimed in claim 1 and 2, wherein raw wastewater is collected in a collection tank (15) and pumped at a steady rate where organic matter in the wastewater comes into intimate contact with a very large area of a rotating biofilm (12) residing on synthetic disks having a very high specific surface thereby supporting a very high microbial population. 4. The system, as claimed in any of the previous claims, wherein aeration is achieved by rapid surface renewal of thin films of wastewater thereby sloughing off the said film's thickness replacing with a new film and the produced mixed liquor containing the said biofilm is passed through a biofilm separator. 5. The system, as claimed in any of the previous claims, wherein separated biofilm is recycled to the sludge zone (17) of the said collection tank (15) and effluent is pumped through a pressure sand-filter (1) and an activated carbon column (2) for further polishing in which the said treated effluent is to be recycled for toilet flushing and gardening etc. 6. The system, as claimed in any of the previous claims, wherein excess sludge from the sludge zone (17) of the said collection tank (15) is drawn out once in 30 days and de-watered on the said sludge trolley or in a filter press (4) and a control section (18) provides a direct reading of the flow-rate. 7. The system, as claimed in any of the previous claims, wherein the entire operation of the said system is carried out with very insignificant human intervention and a control panel (18) takes care of the operation of the said system meeting the most stringent standards for recycle. 8. The system, as claimed in any of the previous claims, wherein the geometry of the entire unit of the said system is tailored to suit space constraints having a wide choice of installation options, e.g., in basements, underground, on terraces etc. 9. The system, as claimed in any of the previous claims, wherein the system requires low power input in which power input is at least less than 30% that of a conventional activated sludge system. 10.The system, as claimed in any of the previous claims, wherein the said packaged system may range from 1 m3 / day capacity to as large as 1000 m3 / day capacity and in multiples thereof. 16 11.The system, as claimed in any of the previous claims, wherein a rubberized epoxy coating ensures protection from corrosion and rusting of the entire unit and the design of the said system is optimized in such a way that the said system uses moving parts as minimum as required. (N.K. Gupta) Patent Agent Dated this 06 day Sap 2005. To The Controller of Patents, The Patent Office, Mumbai 17 ABSTRACT Title: PACKAGED WASTEWATER TREATMENT AND RECYCLE SYSTEM A packaged wastewater treatment and recycle system suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment, the said wastewater treatment system comprises a basic module having a plurality of raw wastewater pumps (6, 11, 19) and some optional add-on modules for filtration and adsorption, softener, filter press (4) etc., the entire system being a pre-fabricated soundless unit and a packaged as well as containerized assembly mounted on a skid type base, carries out biochemical oxidation using a rotating media (12) attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost, and elements like a geared motor (13), pumps (6, 11, 19) and plurality of support bearings constitute moving parts thereby making the said system's maintenance, e.g., lubrication and servicing etc., convenient. Fig. No.: 1 . To The Controller of Patents, The Patent Office, Mumbai

Full Text

FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
COMPLETE SPECIFICATION
PACKAGED WASTEWATER TREATMENT AND RECYCLE SYSTEM
Dr. Shirish Naik An Indian National,
NAIK ENVIRONMENTAL ENGINEERS PVT. LTD.
A686, NAIKENVIRO House, Pavane Indl. Area, Khairne,
Navi Mumbai 400705, Maharastra, India.
The following specification particularly describes the nature of the invention and the manner in
which it is to be performed:

2
BACKGROUND OF THE INVENTION 1. FIELD OF THE INVENTION
The present invention relates broadly to a packaged wastewater treatment with a provision for recycle and reuse of treated wastewater, and more particularly, to a packaged wastewater treatment and recycle system suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment.
2. DESCRIPTION OF THE PRIOR ART
Known relevant prior arts for wastewater treatment and recycle system include US Pat. Application No. 2005016910 of Plante published on 2005-01-27; Australian Pat. Application No. 2002218965 of Ma Mingyi published on 2003-07-24; US Pat. No. 6,235,196 to Zhou et al dated 05/22/2001; US Pat. No. 6,585,895 to Smith et al dated 07/01/2003; US Pat. Application No. 20030226805 of Chi et al dated 06/06/2002; US Pat. Application No. 20020158011 of Yamada dated 11/20/2001; EP Pat. Application No. 1,199,284 of Sanyo Electric Co., Ltd. dated 03/21/2001; US Pat. No. 5,264,120 to Graves dated 11/23/1993; EP Pat. Application No. 1,007,481 of Advent Corporation dated 02/11/1997; US Pat. No. 6,346,197 to Stephenson et al dated 02/12/2002; US Pat. No. 5,456,829 to Brown dated 10/10/1995; and US Pat. No. 6,796,250 to Greene dated 2004-09-28. There are few patents relating to rotating biological contactors. This includes US Pat. No. 4,532,035 dated 07/30/1985 to Fuchs et al.; US Pat. No. 4,568,457 dated 02/04/1986 to Sullivan; US Pat. No. 4,737,278 dated 04/12/1988 to Miller; WO Pat. Application No. 1999035097 dated 01/04/1999 of Siskos; US Pat. No. 4,721,570 dated 01/26/1988 to Ankaitis; WO Pat. Application No. 1995033694 dated 05/02/1995.
US Pat. Application No. 2005016910 of Plante published on 2005-01-27 narrates a system being used for filtering and recycling the waste water collected and stored in a recuperating tank, in which a pump moves the waste water out of the recuperating tank via a water outlet with valve and a recuperating return line through a liquid filtration system, a ground water filter, a separator that separates oil from the water for it directing via a conduit and through a main drain, and thereafter discharged into a conventional septic tank or municipal sewage. Furthermore, the recycled water circulating through separator is directed via a second pump for keeping the water pressure through a fading water filter, a recycled water line for supplying a tank transferring water via a toilet and laundry, and through from the recycled water feeding system. The recycled water being used for flushing toilet will be directed toward a conduit via the main drain, and thereafter discharged into the conventional septic tank or municipal sewage.

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Australian Pat. Application No. 2002218965 of Ma Mingyi published on 2003-07-24 discloses a system for cooking, washing wastewater treatment. The system contains washing device that bringing wastewater, and toilet seat that need not clean water. Therein, the influent of washing device connected from clean water pipeline in the building, the draining of toilet seat connected with sewer of building. Between the draining of washing device and the influent of toilet seat, series connection with filter, storage tank, pump and press tank in orderly. The filter has another drain, connected into sewer of building. With the system for cooking, washing waste water treatment of the invention, would be treatment the waste water of washing device for further sterilize into clean water for toilet seat, and use clean water sparingly.
US Pat. No. 6,235,196 to Zhou et al dated 05/22/2001 describes a bioprocessing system for a feed such as wastewater. The system of US 6,235,196 comprises an anaerobic reactor subsystem, an aerobic reactor subsystem, and a recycle loop for partial recycling of the aerobic reactor subsystem effluent. The anaerobic reactor subsystem is capable of providing anaerobic processing of the wastewater in the substantial absence of aerobic processing of the wastewater. The anaerobic reactor subsystem can include a single anaerobic reactor or a plurality of reactors. The aerobic reactor subsystem is in direct communication with the anaerobic reactor subsystem, with the aerobic reactor subsystem being capable of providing aerobic processing of the wastewater in the substantial absence of anaerobic processing of the wastewater. The aerobic reactor subsystem processes the wastewater from the anaerobic reactor subsystem without intervening bioprocessing of the wastewater. As with the anaerobic subsystem, the aerobic reactor subsystem can include a single aerobic bioreactor or a plurality of reactors. The recycle loop partially recycles an effluent from the aerobic reactor subsystem to an influent of the anaerobic reactor subsystem. The recycle loop provides a means for pH regulation, dilution of the feed, and nitrite-nitrate removal.
US Pat. No. 6,585,895 to Smith et al dated 07/01/2003 discloses a process for treating industrial wastewater that substantially eliminates the generation of excess solids in the system requiring mechanical removal.
US Pat. Application No. 20030226805 of Chi et al dated 06/06/2002 teaches a method of wastewater treatment with biological active carbon using recycled oxygen-enriched water and apparatus used therein. Their wastewater treatment method includes an influent water to an oxygen-supply tank for aeration, the oxygen-enriched water from the oxygen-supply tank into the bottom of an activated carbon tank, so that the oxygen-enriched water flows upward and expands the activated carbon bed.
Both the US Pat. Application No. 20020158011 of Yamada dated 11/20/2001 and EP Pat. Application No. 1,199,284 of Sanyo Electric Co., Ltd. dated 03/21/2001 delineate a wastewater treatment apparatus and a method for recycling material for wastewater treatment.

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A method and apparatus for recycling wastewater is described in US Pat. No. 5,456,829 to Brown dated 10/10/1995. Brown's apparatus for recycling wastewater solutions includes a treatment tank and an air-operated pump and piping system for pumping wastewater contaminated with oil, heavy metals, and suspended solids from industrial equipment such as a jetwasher to the treatment tank, and for subsequently returning the purified water solution to the industrial equipment for reuse.
US Pat. No. 4,532,035 states a rotating biological contactor for the biological purification of waste water. With contactor bodies formed of spirally wound up corrugated panels providing ducts in the region of the corrugation profiles which are alternately filled with waste water and air, there is a problem to completely fill the ducts and to provide a continuous flow through the ducts in a body of simple and rigid construction. In order to solve this problem, according to the said US Pat. No. 4,532,035, the corrugation profiles of at least one corrugated panel are inclined at a predetermined angle relative to the axis of the contactor body. Thereby, the disadvantages of the known, mechanically unstable constructions comprising a tube bundle are avoided and an intensive flow of waste water and air within the ducts is achieved. Advantageously, the corrugation profiles of winding layers arranged radially above each other or axially beneath each other comprise different inclination angles, especially angles which are opened contrary to each other.
In US Pat. No. 4,568,457 an industrial waste anaerobic digester is disclosed having separate sections therein, in which the acid forming and gas forming phases of the digestion process can occur separately under conditions optimized for each phase. A rotating biological contactor is provided in each section for increasing the liquid/gas interface to facilitate the anaerobic reaction. A series of partitions is provided in each section to create zones in which the waste concentration is extremely high and on which the biota can react at maximal reaction rates. The C02 produced in the acid forming phase is used in both acid and gas forming sections to mix and achieve pH adjustment, and the methane can be used in the gas forming sections for mixing. A thermophilic chamber in the center of the tank is surrounded by the mesophyllic chamber to minimize and utilize conductive heat loss.
A modular rotating biological contactor apparatus is provided in US Pat. No. 4,737,278 which utilizes a plurality of hemicylindrical trough sections, a plurality of bulkhead means interconnecting adjacent trough sections, and a pair of endplate means as subassemblies. These subassemblies are prefabricated and adapted for simple and easy interconnection with one another by means of integrally formed disengagable associatable interfitting means. Using these subassemblies, a plurality of different configurational possibilities for rotating biological contactor apparatus are achievable.
WO Pat. Application No. 1999035097 refers to the capacity of an aerobic bioconversion system for the wastewater treatment of an olive oil processing

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plant, concerning the phytotoxicity reduction by means of a biocontactor having various shapes, which is either rotating and in line or in circle moving, while the treated wastewater is stationary or only statistically rotating, while the treated wastewater is moving. WO Pat. Application No. 1999035097 refers to an additional transport motion either of the biocontactor, implemented by placing the biocontactor on a trolley-frame, or of the treated wastewater with the rotating biocontactor remaining fixed, implemented by kinetic energy addition to the liquid (in all its treatment phases, especially while the gel phase) by means of mixers etc. The additional transport motion of the biocontactor allows treatment of a multiple wastewater volume. The suggested capacity increase allows for multiple greater efficiency of the whole plant in constructional and operating point of view, comparing with the biocontactor of the former technique. WO Pat. Application No. 1999035097 is applicable for bioreactors with aerobic microorganisms, whose breathing time can be practically utilized for the additional suggested motion (linear or circular) of either the biocontactor or the treaded wastewater, as is the case in olive oil processing plants.
A method and apparatus for enhancing the settleability of suspended wastewater solids is provided in US Pat. No. 4,721,570 for a wastewater treatment system comprising a primary clarifier apparatus, a compartmentalized, sequential secondary biological treatment apparatus such as a rotating biological contactor tank, and a secondary clarifier, wherein a portion of waste sludge from the clarifier is diverted to compartments of the rotating biological contactor tank to enhance the flocculation of the suspended waste solids. The diverted sludge particles serve as flocculation nuclei which promote settleability and lower turbidity once the effluent reaches the secondary clarifier.
WO Pat. Application No. 1995033694 discloses a media panel for a rotating biological treatment apparatus for treating waste water, the rotating biological treatment apparatus including a rotatable shaft having a longitudinal axis and a plurality of media panel assemblies stacked on the shaft and a plurality of media panels mounted on the hub, the media panel comprising a planar member having a first side and a second side, and the planar member being mountable on the hub to extend normal to the longitudinal axis for the shaft to form a portion of a generally disk-shaped media panel assembly extending normal to the longitudinal axis of the shaft; the first side of the planar member including at least one first set of alternating grooves and ridges, and the second side of the media panel including at least one second set of grooves and ridges; the grooves and ridges of the first and second sets of alternating grooves and ridges each having a first radially inner portion, a second radially inner portion spaced apart from the first radially inner portion, and a radially outer portion between and spaced radially outwardly with respect to the first and second radially inner portions when the media panel is mounted on the hub.
After an exhaustive study on both relevant and related patent documents and on existing conventional wastewater treatment and recycle systems it has been found that there is a need for a packaged wastewater treatment and

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recycle system suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment. Moreover, the operation of the conventional wastewater treatment and recycling systems are not simple and the conventional systems require significant human intervention. There are many problems in the existing wastewater treatment and recycling systems which will be clear from the objectives of the present invention. Thus, it would be desirable to devise a wastewater treatment and recycle system that obviates the existing problems of the prior arts.
3. SUMMARY AND OBJECTS OF THE INVENTION
Accordingly, the present invention is directed to propose a packaged wastewater treatment system with an add-on module for recycle suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment.
An object of the present invention is to provide a packaged wastewater treatment and recycle system which carries out biochemical oxidation using an attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost.
Another object of the present invention is to provide a packaged wastewater treatment and recycle system in which operation is extremely simple and once stabilized, the said system can be left to itself with very little human intervention.
Another further object of the present invention is to provide a packaged wastewater treatment and recycle system where the treated effluent meets the most stringent of standards for disposal or recycle.
Yet another object of the present invention is to provide a packaged wastewater treatment and recycle system having wide choice of installation options, e.g., in basements, underground, on terraces etc.
Still another object of the present invention is to provide a packaged wastewater treatment and recycle system having low power input and housed in a corrosion and rust-proof container.
To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, the packaged wastewater treatment and recycle system suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment comprising a basic module, the said wastewater treatment system is characterized by that:

7
the said basic module having a plurality of raw wastewater pumps of non-clog type;
biological media complete with mounting and a biofilm-substrate contacting system, geared drive assembly;
a biofilm separator in the form of lamella modules;
a disinfectant dosing system;
a flow meter;
a plurality of pressure gauges;
an air vent of 150 mm diameter with exhaust fan connected to main exhaust duct;
a plurality of raw sewage suction pipes (9) connected to raw sewage tank;
a suction strainer;
a manhole of 600 mm diameter;
a cover suitably designed for the whole system;
a RCC cover slab and a plurality of inverted tee RCC beams;
a digested sludge withdrawal pipe;
a sludge dewatering trolley;
a weather-proof control panel, cabling etc.;
the entire system being a pre-fabricated soundless unit and a packaged as well as containerized assembly mounted on a skid type base, carries out biochemical oxidation using an attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost, and elements like a geared motor, a pump and plurality of support bearings constitute moving parts thereby making the said system's maintenance, e.g., lubrication and servicing etc., convenient.
Another embodiment of the said packaged wastewater treatment and recycle system, according to the present invention, suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment comprising a basic module, the said wastewater treatment system comprises:
the said basic module having a plurality of raw wastewater pumps of non-clog
type; biological media complete with mounting and a biofilm-substrate contacting
system, geared drive assembly; the media consisting of either of or a
combination of the following: the said basic module having a plurality of raw wastewater pumps of non-clog
type; biological media complete with mounting and a biofilm-substrate contacting
system, geared drive assembly; the media consisting of either of or a
combination of the following: biological media complete with mounting and a biofilm-substrate contacting
system, geared drive assembly, the said media consisting of either of or a
combination of the following:
a) Red Mud Plastic (RMP) corrugated sheets with a clear spacing of 10-15 millimetres bound together in the form of disk packs of various lengths depending on the intended application, the RMP

8
sheets being mounted on a large number of tie rods of steel penetrating the sheets perpendicular to them with the tie rods being supported at both ends by driving disks in which the tie rods being securely fastened to the driving disks on both sides by multiple nuts, the driving disks being connected to the shaft by a steel hub fastened by a key way arrangement thereby transmitting the rotary motion from the helical geared motor to the disk pack through the driving disks, and steel structural members being fixed lengthwise to the driving disks providing additional support to the disk pack; b) a media similar to the system described in item (a) above employing a large number of polypropylene or polystyrene moulded disks with monolithic spacers mounted on tie rods of steel to form a single assembly fixed to the driving disks at both ends as described in item (a) above; a large number of such assemblies being mounted in a carom board type of design when viewed from the side of the driving disks.
a biofilm separator in the form of lamella modules fabricated out of RMP sheets mounted at 55-60 degrees inclination with the horizontal with clear spacing between adjacent sheets ranging from 20-50 millimetres, the said sheets being mounted on a large number of steel rods which penetrate them at the desired angle with each end of the said rods mounted on a sturdy steel frame to form self supporting modules placed in the biofilm separator compartment;
a disinfectant dosing system;
a flow meter;
a plurality of pressure gauges;
an air vent of 150 mm diameter with exhaust fan connected to main exhaust duct;
a plurality of raw sewage suction pipes connected to raw sewage tank;
a suction strainer;
a manhole of 600 mm diameter;
a cover suitably designed for the whole system;
a RCC cover slab and a plurality of inverted tee RCC beams;
a digested sludge withdrawal pipe;
a sludge dewatering trolley;
a weather-proof control panel, cabling etc.;
an efficient filtration and adsorption add-on module having a pressure sand filter and an activated carbon column with a plurality of feed pumps, all mounted on the said skid;
a softener add-on module having a resin based softener for generating soft water from treated effluent;
a filter press or a decanter centrifuge add-on module for de-watering and
compressing sludge into a dense cake having a progressive cavity feed
pump;
the entire system being a pre-fabricated soundless unit and a packaged as well as containerized assembly mounted on a skid type base, carries out biochemical oxidation using an attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of

9
wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost, and elements like a geared motor, a pump and plurality of support bearings constitute moving parts thereby making the said system's maintenance, e.g., lubrication and servicing etc., convenient.
The said packaged wastewater treatment and recycle system, according to the present invention, wherein raw wastewater is collected in a sump and pumped at a steady rate where organic matter in the wastewater comes into intimate contact with a very large area of a rotating biofilm residing on synthetic disks having a very high specific surface thereby supporting a very high microbial population.
The said packaged wastewater treatment and recycle system, according to the present invention, wherein aeration is achieved by rapid surface renewal of thin films of wastewater thereby sloughing off the said film's thickness replacing with a new film and the produced mixed liquor containing the said biofilm is passed through a biofilm separator.
The said packaged wastewater treatment and recycle system, according to the present invention, wherein separated biofilm is recycled to the sludge zone of the said collection tank and effluent is pumped through a pressure sand-filter and an activated carbon column for further polishing in which the said treated effluent is to be recycled for toilet flushing and gardening etc.
The said packaged wastewater treatment and recycle system, according to the present invention, wherein excess sludge from the sludge zone of the said collection tank is drawn out once in 30 days and de-watered on the said sludge trolley or in a filter press and a control section or flow meter provides a direct reading of the flow-rate.
The said packaged wastewater treatment and recycle system, according to the present invention, wherein the entire operation of the said system is carried out with very insignificant human intervention and a control panel takes care of the operation of the said system meeting the most stringent of standards for recycle.
The said packaged wastewater treatment and recycle system, according to the present invention, wherein the geometry of the entire unit of the said system is tailored to suit space constraints having a wide choice of installation options, e.g., in basements, underground, on terraces etc.
The said packaged wastewater treatment and recycle system, according to the present invention, wherein the system requires low power input in which process power input is at least less than 30% that of a conventional activated sludge system.
The said packaged wastewater treatment and recycle system, according to the present invention, wherein the said packaged system may range from 1

10
m3 / day capacity to as large as 1000 m3 / day capacity and in multiples thereof.
The said packaged wastewater treatment and recycle system, according to the present invention, wherein a rubberized epoxy coating ensures protection from corrosion and rusting of the entire unit and the design of the said system is optimized in such a way that the said system uses moving parts as minimum as required.
The various features of novelty that characterise the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its uses, reference is made to the accompanying drawings and descriptive matter in which preferred embodiments of the invention are illustrated.
4. BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
A more complete understanding of the present embodiments and advantages thereof may be acquired by referring to the following description taken in conjunction with the accompanying drawing, in which like reference numbers indicate like features, and wherein:
Fig. 1 is a diagram illustrating the plan view of the packaged wastewater treatment and recycle system according to the present invention;
Fig. 2 is a sectional view cut along X-X direction of Fig. 1, according to the present invention; and
Fig. 3 illustrates the sectional view cut along Y-Y direction of Fig. 1, according to the present invention.
5. DETAILED DESCRIPTION OF THE INVENTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS
The packaged wastewater treatment and recycle system, according to the present invention, carries out biochemical oxidation using an attached growth aerobic biological system. The entire system, shown in Fig. 1, is a soundless unit. The system, according to the present invention, takes up atmospheric oxygen without any splashing and spraying of wastewater unlike aeration systems. The effluent is clarified meeting the most stringent standards with the greatest of ease. The entire system is a complete packaged and containerized assembly mounted on a "skid" type base. The system produces very little sludge - and that too in a completely mineralized form convertible into garden compost.
Raw wastewater is collected in a tank (15) provided by the owner of the system, according to the present invention, and pumped at a steady rate into the system where organic matter in the wastewater comes into intimate

11
contact with a very large area of a rotating biofilm (12) residing on synthetic disks. The disks have a very high specific surface and hence support a very high microbial population. Aeration is achieved by rapid surface renewal of thin films of wastewater. As the film grows in thickness it sloughs off and a new film takes its place. Mixed liquor containing the said biofilm is passed through a biofilm separator (14). Separated biofilm is recycled to the sludge zone of the said collection tank (15). Where the treated effluent is to be recycled for toilet flushing and gardening etc., the effluent is pumped through a pressure sand filter and an activated carbon column for further polishing.
Excess sludge from the sludge zone of the said collection tank (15) is drawn out once in 30 days and de-watered on sludge trolley or in a filter press (4). A control section (18) provides a direct reading of the flow-rate.
The entire operation is extremely simple and the said system once stabilized, can be left to itself with very little human intervention. A control panel (18) takes care of the operation of the said system. The treated effluent meets the most stringent of standards for recycle.
The system, according to the present invention, is elegantly designed with particular emphasis on compactness, aesthetics and ergonomics — suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. Even the geometry of the unit can be tailored to suit space constraints. The said system has wide choice of installation options, e.g., in basements, underground, on terraces etc. The fully enclosed design ensures an odour-free environment unlike conventional systems. The system, according to the present invention, requires low power input. The power input is at least less than 30% that of a conventional activated sludge system. The said packaged system, as for an example, ranges from 1m3/ day capacity to as large as 1000 m3 / day capacity and in multiples thereof. As the said system uses rubberized epoxy coating, the said coating gives excellent protection from corrosion and rusting. The design of the said system is optimized in such a way that the said system uses moving parts as minimum as required. Geared motor (13), pumps (6, 11, 19) and support bearings of the said system constitute the moving parts requiring lubrication and servicing — the easy accessibility of these makes maintenance very convenient. Installation of the said system is very easy as the said system is entirely prefabricated and is merely to be mounted at the site in the tank (15) constructed by the owner.
The following Table shows space and power requirements of the basic module of the system, according to the present invention.
SPACE AND POWER REQUIREMENT (basic module):

FLOW,m3/day 25 50 75 700 150 200 300 400 500 750 7000
Power consumed, HP 1.5 1.5 2 2 3 3 5 6 6 8 10
Space required, m" 6 8 10 12 15 20 30 40 50 75 100

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Rawwastewater collection tank/septic tank, vol— m3 15 25 30 50 75 100 150 200 250 375 500
Footprint area of collection tank, m 5 8 10 12 20 30 40 60 65 100 125
It may be noted that volume of raw wastewater collection tank (15) may be reduced depending on space constraints. The said system may be installed on cover slab (3) of collection tank (15) to save space. The top slab of collection tank (15) being at ground level enables effective use of space.
While the principles of this invention have been described in connection with specific embodiment, it should be understood clearly that these descriptions are made only by way of example and are not intended to limit the scope of the invention.
Following table shows the reference signs used in the accompanying drawings:

Reference signs Description
1 Pressure sand filter
2 Activated carbon filter
3 Cover
4 Filter press
5 Raw sewage tank
6 Raw sewage pump
7 Manhole of 600 mm diameter
8 Suction strainer
9 Raw sewage suction pipe
10 Air vent of 150 mm diameter with exhaust fan
11 Progressive cavity pump
12 Rotating biodisk contactor (RBC)
13 Drive for rotating biodisk contactor
14 Lamella separator
15 Raw wastewater tank
16 RCC cover slab
17 Digesting sludge zone
18 Control panel
19 Filter feed pump
20 Inverted tee RCC beams
21 Digested sludge withdrawal pipe

13
I Claim:
1. A packaged wastewater treatment and recycle system suitable for
housing, commercial and industrial complexes, hotels, hospitals, construction
camps, etc. and having an odour-free environment comprising a basic
module, the said wastewater treatment system is characterized by that:
the said basic module having a plurality of raw wastewater pumps (6) of
horizontal centrifugal non-clog type; biological media complete with mounting and a biofilm-substrate contacting
system, geared drive assembly; a biofilm separator in the form of lamella modules (14); a disinfectant dosing system; a flow meter;
a plurality of pressure gauges; an air vent of 150 mm diameter with exhaust fan (10) connected to main
exhaust duct; a plurality of raw sewage suction pipes (9) connected to raw sewage tank (5); a suction strainer (8); a manhole of 600 mm diameter (7); a cover (3) suitably designed for the whole system; a RCC cover slab (16) and a plurality of inverted tee RCC beams (20); a digested sludge withdrawal pipe (21); a sludge dewatering trolley; a weather-proof control panel (18), cabling etc.;
the entire system being a pre-fabricated soundless unit and a packaged as well as containerized assembly mounted on a skid type base, carries out biochemical oxidation using an attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost, and elements like a geared motor (13), pumps (6, 11, 19) and plurality of support bearings constitute moving parts thereby making the said system's maintenance, e.g., lubrication and servicing etc., convenient.
2. A packaged wastewater treatment and recycle system suitable for
housing, commercial and industrial complexes, hotels, hospitals, construction
camps, etc. and having an odour-free environment comprising a basic
module, the said wastewater treatment system comprising:
the said basic module having a plurality of raw wastewater pumps (6) of non-clog type;
biological media complete with mounting and a biofilm-substrate contacting system (12), geared drive assembly, the said media consisting of either of or a combination of the following:

14
c) Red Mud Plastic (RMP) corrugated sheets with a clear spacing of
10-15 millimetres bound together in the form of disk packs of various lengths depending on the intended application, the RMP sheets being mounted on a large number of tie rods of steel penetrating the sheets perpendicular to them with the tie rods being supported at both ends by driving disks in which the tie rods being securely fastened to the driving disks on both sides by multiple nuts, the driving disks being connected to the shaft by a steel hub fastened by a key way arrangement thereby transmitting the rotary motion from the helical geared motor to the disk pack through the driving disks, and steel structural members being fixed lengthwise to the driving disks providing additional support to the disk pack;
d) a media similar to the system described in item (a) above
employing a large number of polypropylene or polystyrene moulded disks with monolithic spacers mounted on tie rods of steel to form a single assembly fixed to the driving disks at both ends as described in item (a) above; a large number of such assemblies being mounted in a carom board type of design when viewed from the side of the driving disks.
a biofilm separator in the form of lamella modules (14) fabricated out of RMP sheets mounted at 55-60 degrees inclination with the horizontal with clear spacing between adjacent sheets ranging from 20-50 millimetres, the said sheets being mounted on a large number of steel rods which penetrate them at the desired angle with each end of the said rods mounted on a sturdy steel frame to form self supporting modules placed in the biofilm separator compartment;
a disinfectant dosing system;
a flow meter;
a plurality of pressure gauges;
an air vent of 150 mm diameter with exhaust fan (10) connected to main exhaust duct;
a plurality of raw sewage suction pipes (9) connected to raw sewage tank (5);
a suction strainer (8);
a manhole of 600 mm diameter (7);
a cover (3) suitably designed for the whole system;
a RCC cover slab (16) and a plurality of inverted tee RCC beams (20);
a digested sludge withdrawal pipe (21);
a sludge dewatering trolley;
a weather-proof control panel (18), cabling etc.;
an efficient filtration and adsorption add-on module having a pressure sand filter (1) and an activated carbon column (2) with a plurality of feed pumps (19), all mounted on the said skid;
a softener add-on module having a resin based softener for generating soft water from treated effluent;
a filter press (4) or a decanter centrifuge add-on module for de-watering and
compressing sludge into a dense cake having a progressive cavity feed pump
(11);
the entire system being a pre-fabricated soundless unit and a packaged as well as containerized assembly mounted on a skid type base, carries out

15
biochemical oxidation using an attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost, and elements like a geared motor (13), pump (6, 11, 19) and plurality of support bearings constitute moving parts thereby making the said system's maintenance, e.g., lubrication and servicing etc., convenient.
3. The system, as claimed in claim 1 and 2, wherein raw wastewater is collected in a collection tank (15) and pumped at a steady rate where organic matter in the wastewater comes into intimate contact with a very large area of a rotating biofilm (12) residing on synthetic disks having a very high specific surface thereby supporting a very high microbial population.
4. The system, as claimed in any of the previous claims, wherein aeration is achieved by rapid surface renewal of thin films of wastewater thereby sloughing off the said film's thickness replacing with a new film and the produced mixed liquor containing the said biofilm is passed through a biofilm separator.
5. The system, as claimed in any of the previous claims, wherein separated biofilm is recycled to the sludge zone (17) of the said collection tank (15) and effluent is pumped through a pressure sand-filter (1) and an activated carbon column (2) for further polishing in which the said treated effluent is to be recycled for toilet flushing and gardening etc.
6. The system, as claimed in any of the previous claims, wherein excess sludge from the sludge zone (17) of the said collection tank (15) is drawn out once in 30 days and de-watered on the said sludge trolley or in a filter press (4) and a control section (18) provides a direct reading of the flow-rate.
7. The system, as claimed in any of the previous claims, wherein the entire operation of the said system is carried out with very insignificant human intervention and a control panel (18) takes care of the operation of the said system meeting the most stringent standards for recycle.
8. The system, as claimed in any of the previous claims, wherein the geometry of the entire unit of the said system is tailored to suit space constraints having a wide choice of installation options, e.g., in basements, underground, on terraces etc.
9. The system, as claimed in any of the previous claims, wherein the system requires low power input in which power input is at least less than 30% that of a conventional activated sludge system.
10.The system, as claimed in any of the previous claims, wherein the said packaged system may range from 1 m3 / day capacity to as large as 1000 m3 / day capacity and in multiples thereof.

16
11.The system, as claimed in any of the previous claims, wherein a rubberized epoxy coating ensures protection from corrosion and rusting of the entire unit and the design of the said system is optimized in such a way that the said system uses moving parts as minimum as required.

(N.K. Gupta) Patent Agent
Dated this 06 day Sap 2005.
To
The Controller of Patents,
The Patent Office, Mumbai

17
ABSTRACT
Title: PACKAGED WASTEWATER TREATMENT AND RECYCLE SYSTEM
A packaged wastewater treatment and recycle system suitable for housing, commercial and industrial complexes, hotels, hospitals, construction camps, etc. and having an odour-free environment, the said wastewater treatment system comprises a basic module having a plurality of raw wastewater pumps (6, 11, 19) and some optional add-on modules for filtration and adsorption, softener, filter press (4) etc., the entire system being a pre-fabricated soundless unit and a packaged as well as containerized assembly mounted on a skid type base, carries out biochemical oxidation using a rotating media (12) attached growth aerobic biological system by taking up atmospheric oxygen without any splashing and spraying of wastewater and producing sludge of negligible proportion in a completely mineralized form convertible into garden compost, and elements like a geared motor (13), pumps (6, 11, 19) and plurality of support bearings constitute moving parts thereby making the said system's maintenance, e.g., lubrication and servicing etc., convenient.
Fig. No.: 1
.

To
The Controller of Patents,
The Patent Office, Mumbai

Documents:

1086-MUM-2005-ABSTRACT(6-10-2008).pdf

1086-MUM-2005-ABSTRACT(8-9-2005).pdf

1086-MUM-2005-ABSTRACT(AMENDED)-(6-10-2008).pdf

1086-mum-2005-abstract(granted)-(24-6-2009).pdf

1086-mum-2005-abstract.doc

1086-mum-2005-abstract.pdf

1086-MUM-2005-CANCELLED PAGES(6-10-2008).pdf

1086-MUM-2005-CLAIMS(6-10-2008).pdf

1086-MUM-2005-CLAIMS(8-9-2005).pdf

1086-mum-2005-claims(granted)-(24-6-2009).pdf

1086-mum-2005-claims.doc

1086-mum-2005-claims.pdf

1086-MUM-2005-CORRESPONDENCE(11-12-2008).pdf

1086-MUM-2005-CORRESPONDENCE(15-1-2007).pdf

1086-MUM-2005-CORRESPONDENCE(6-10-2008).pdf

1086-MUM-2005-CORRESPONDENCE(IPO)-(17-7-2009).pdf

1086-MUM-2005-CORRESPONDENCE(IPO)-(31-12-2007).pdf

1086-mum-2005-correspondence-received.pdf

1086-mum-2005-description (complete).pdf

1086-MUM-2005-DESCRIPTION(COMPLETE)-(6-10-2008).pdf

1086-MUM-2005-DESCRIPTION(COMPLETE)-(8-9-2005).pdf

1086-mum-2005-description(granted)-(24-6-2009).pdf

1086-MUM-2005-DRAWING(6-10-2008).pdf

1086-MUM-2005-DRAWING(8-9-2005).pdf

1086-MUM-2005-DRAWING(AMENDED)-(6-10-2008).pdf

1086-mum-2005-drawing(granted)-(24-6-2009).pdf

1086-mum-2005-drawings.pdf

1086-MUM-2005-FORM 1(6-10-2008).pdf

1086-MUM-2005-FORM 1(8-9-2005).pdf

1086-MUM-2005-FORM 13(16-6-2009).pdf

1086-MUM-2005-FORM 18(19-1-2007).pdf

1086-mum-2005-form 2(6-10-2008).pdf

1086-MUM-2005-FORM 2(COMPLETE)-(8-9-2005).pdf

1086-mum-2005-form 2(granted)-(24-6-2009).pdf

1086-MUM-2005-FORM 2(TITLE PAGE)-(6-10-2008).pdf

1086-MUM-2005-FORM 2(TITLE PAGE)-(COMPLETE)-(8-9-2005).pdf

1086-mum-2005-form 2(title page)-(granted)-(24-6-2009).pdf

1086-MUM-2005-FORM 26(8-9-2005).pdf

1086-MUM-2005-FORM 3(6-10-2008).pdf

1086-MUM-2005-FORM 3(8-9-2005).pdf

1086-MUM-2005-FORM 9(7-4-2006).pdf

1086-mum-2005-form-1.pdf

1086-mum-2005-form-2.doc

1086-mum-2005-form-2.pdf

1086-mum-2005-form-3.pdf

1086-MUM-2005-SPECIFICATION(AMENDED)-(6-10-2008).pdf

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Patent Number

234990

Indian Patent Application Number

1086/MUM/2005

PG Journal Number

28/2009

Publication Date

10-Jul-2009

Grant Date

24-Jun-2009

Date of Filing

08-Sep-2005

Name of Patentee

SHIRISH NAIK AN INDIAN NATIONAL

Applicant Address

NAIK ENCOIRMENTAL ENHINEER PVT. LTD. A686 NAIKENVOIR HOUSE, PAVANE INDL. AREA KHAINE, NAVI MUMBAI - 400 0705. MAHARASTRA INDIA

Inventors:

#	Inventor's Name	Inventor's Address
1	SHIRISH NAIK	NAIK ENCOIRMENTAL ENHINEER PVT. LTD. A686 NAIKENVOIR HOUSE, PAVANE INDL. AREA KHAINE, NAVI MUMBAI - 400 0705. MAHARASTRA INDIA

PCT International Classification Number

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA