| Title of Invention | METHOD OF IMPROVING PERFORMANCE OF ULTRAFILTRATION OR MICROFILTRATION MEMBRANE PROCESS IN BACKWASH WATER TREATMENT |
|---|---|
| Abstract | A method of processing backwash water by use of a membrane separation process is disclosed. Specifically, the following steps are taken to process backwash water: collecting backwash water in a receptacle suitable to hold said backwash water; treating said backwash water with one or more water soluble polymers, wherein said water soluble polymers are selected from the group consisting of: amphoteric polymers; cationic polymers, wherein, said charge density is from about 5 mole percent to about 100 mole percent; zwitterionic polymers; and a combination thereof; optionally mixing said water soluble polymers with said backwash water; passing said treated backwash water through a membrane, wherein said membrane is an ultrafiltration membrane or... |
| Full Text | METHOD OF IMPROVING PERFORMANCE OF ULTRAFILTRATION OR MICROFILTRATION MEMBRANE PROCESS IN BACKWASH WATER TREATMENT |
|---|
| Patent Number | 278641 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Indian Patent Application Number | 9844/DELNP/2008 | ||||||||
| PG Journal Number | 54/2016 | ||||||||
| Publication Date | 30-Dec-2016 | ||||||||
| Grant Date | 27-Dec-2016 | ||||||||
| Date of Filing | 25-Nov-2008 | ||||||||
| Name of Patentee | NALCO COMPANY | ||||||||
| Applicant Address | 1601 W. Diehl Road Naperville Illinois 60563-1198 United States of America | ||||||||
Inventors:
|
|||||||||
| PCT International Classification Number | B01D 61/00 | ||||||||
| PCT International Application Number | PCT/US2007/069865 | ||||||||
| PCT International Filing date | 2007-05-29 | ||||||||
PCT Conventions:
|
|||||||||