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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...
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
25 November 2008
Publication Number
21/2009
Publication Type
INA
Invention Field
POLYMER TECHNOLOGY
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2016-12-27
Renewal Date
Applicants
NALCO COMPANY
1601 W. Diehl Road Naperville Illinois 60563-1198 United States of America
Inventors
1. MUSALE Deepak A.
3240 Haverhill Drive Aurora Illinois 60502 United States of America
Specification
METHOD OF IMPROVING PERFORMANCE OF ULTRAFILTRATION OR MICROFILTRATION MEMBRANE PROCESS IN BACKWASH WATER TREATMENT
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 9844-DELNP-2008-GPA-(21-04-2010).pdf | 2010-04-21 |
| 1 | 9844-DELNP-2008-RELEVANT DOCUMENTS [03-10-2023(online)].pdf | 2023-10-03 |
| 2 | 9844-DELNP-2008-Form-18-(21-04-2010).pdf | 2010-04-21 |
| 2 | 9844-DELNP-2008-RELEVANT DOCUMENTS [26-09-2022(online)].pdf | 2022-09-26 |
| 3 | 9844-DELNP-2008-RELEVANT DOCUMENTS [21-07-2021(online)].pdf | 2021-07-21 |
| 3 | 9844-DELNP-2008-Correspondence-Others-(21-04-2010).pdf | 2010-04-21 |
| 4 | Priority Document.pdf | 2011-08-20 |
| 4 | 9844-DELNP-2008-RELEVANT DOCUMENTS [28-03-2020(online)].pdf | 2020-03-28 |
| 5 | Form-5.pdf | 2011-08-20 |
| 5 | 9844-DELNP-2008-RELEVANT DOCUMENTS [27-03-2020(online)].pdf | 2020-03-27 |
| 6 | Form-3.pdf | 2011-08-20 |
| 6 | 9844-DELNP-2008-RELEVANT DOCUMENTS [26-03-2019(online)].pdf | 2019-03-26 |
| 7 | Form-1.pdf | 2011-08-20 |
| 7 | 9844-DELNP-2008-RELEVANT DOCUMENTS [21-03-2019(online)].pdf | 2019-03-21 |
| 8 | Drawings.pdf | 2011-08-20 |
| 8 | 278641-9844-delnp-2008.pdf | 2018-12-22 |
| 9 | 9844-delnp-2008-Form-3-(30-12-2013).pdf | 2013-12-30 |
| 9 | 9844-DELNP-2008-RELEVANT DOCUMENTS [27-03-2018(online)].pdf | 2018-03-27 |
| 10 | 9844-delnp-2008-Correspondence Others-(30-12-2013).pdf | 2013-12-30 |
| 10 | 9844-DELNP-2008-RELEVANT DOCUMENTS [20-03-2018(online)].pdf | 2018-03-20 |
| 11 | Form 27 [25-03-2017(online)].pdf | 2017-03-25 |
| 11 | Relevant Documents.pdf | 2014-04-02 |
| 12 | FORM 13_Address for Service.pdf | 2014-04-02 |
| 12 | Form 27 [09-03-2017(online)].pdf | 2017-03-09 |
| 13 | 9844-delnp-2008-Others-(22-01-2015).pdf | 2015-01-22 |
| 13 | Form 26 [13-06-2016(online)].pdf | 2016-06-13 |
| 14 | 9844-delnp-2008-Correspondence Others-(23-10-2015).pdf | 2015-10-23 |
| 14 | 9844-delnp-2008-Form-3-(22-01-2015).pdf | 2015-01-22 |
| 15 | 9844-delnp-2008-Correspondence Others-(22-01-2015).pdf | 2015-01-22 |
| 15 | Claims.pdf | 2015-03-28 |
| 16 | complete spec.pdf | 2015-03-28 |
| 16 | Petition-137-(04-03-2015).pdf | 2015-03-04 |
| 17 | Correspondence.pdf | 2015-03-28 |
| 17 | Correspondence-others-(04-03-2015).pdf | 2015-03-04 |
| 18 | Assignments-(04-03-2015).pdf | 2015-03-04 |
| 18 | FER response.pdf | 2015-03-28 |
| 19 | 9844-delnp-2008-Correspondence Others-(04-03-2015).pdf | 2015-03-04 |
| 19 | Others.pdf | 2015-03-28 |
| 20 | 9844-delnp-2008-Assignment-(04-03-2015).pdf | 2015-03-04 |
| 20 | Petition_delay Section 8.pdf | 2015-03-12 |
| 21 | 9844-delnp-2008-Assignment-(04-03-2015).pdf | 2015-03-04 |
| 21 | Petition_delay Section 8.pdf | 2015-03-12 |
| 22 | 9844-delnp-2008-Correspondence Others-(04-03-2015).pdf | 2015-03-04 |
| 22 | Others.pdf | 2015-03-28 |
| 23 | Assignments-(04-03-2015).pdf | 2015-03-04 |
| 23 | FER response.pdf | 2015-03-28 |
| 24 | Correspondence.pdf | 2015-03-28 |
| 24 | Correspondence-others-(04-03-2015).pdf | 2015-03-04 |
| 25 | complete spec.pdf | 2015-03-28 |
| 25 | Petition-137-(04-03-2015).pdf | 2015-03-04 |
| 26 | 9844-delnp-2008-Correspondence Others-(22-01-2015).pdf | 2015-01-22 |
| 26 | Claims.pdf | 2015-03-28 |
| 27 | 9844-delnp-2008-Correspondence Others-(23-10-2015).pdf | 2015-10-23 |
| 27 | 9844-delnp-2008-Form-3-(22-01-2015).pdf | 2015-01-22 |
| 28 | 9844-delnp-2008-Others-(22-01-2015).pdf | 2015-01-22 |
| 28 | Form 26 [13-06-2016(online)].pdf | 2016-06-13 |
| 29 | FORM 13_Address for Service.pdf | 2014-04-02 |
| 29 | Form 27 [09-03-2017(online)].pdf | 2017-03-09 |
| 30 | Form 27 [25-03-2017(online)].pdf | 2017-03-25 |
| 30 | Relevant Documents.pdf | 2014-04-02 |
| 31 | 9844-delnp-2008-Correspondence Others-(30-12-2013).pdf | 2013-12-30 |
| 31 | 9844-DELNP-2008-RELEVANT DOCUMENTS [20-03-2018(online)].pdf | 2018-03-20 |
| 32 | 9844-delnp-2008-Form-3-(30-12-2013).pdf | 2013-12-30 |
| 32 | 9844-DELNP-2008-RELEVANT DOCUMENTS [27-03-2018(online)].pdf | 2018-03-27 |
| 33 | 278641-9844-delnp-2008.pdf | 2018-12-22 |
| 33 | Drawings.pdf | 2011-08-20 |
| 34 | 9844-DELNP-2008-RELEVANT DOCUMENTS [21-03-2019(online)].pdf | 2019-03-21 |
| 34 | Form-1.pdf | 2011-08-20 |
| 35 | 9844-DELNP-2008-RELEVANT DOCUMENTS [26-03-2019(online)].pdf | 2019-03-26 |
| 35 | Form-3.pdf | 2011-08-20 |
| 36 | 9844-DELNP-2008-RELEVANT DOCUMENTS [27-03-2020(online)].pdf | 2020-03-27 |
| 36 | Form-5.pdf | 2011-08-20 |
| 37 | Priority Document.pdf | 2011-08-20 |
| 37 | 9844-DELNP-2008-RELEVANT DOCUMENTS [28-03-2020(online)].pdf | 2020-03-28 |
| 38 | 9844-DELNP-2008-RELEVANT DOCUMENTS [21-07-2021(online)].pdf | 2021-07-21 |
| 38 | 9844-DELNP-2008-Correspondence-Others-(21-04-2010).pdf | 2010-04-21 |
| 39 | 9844-DELNP-2008-RELEVANT DOCUMENTS [26-09-2022(online)].pdf | 2022-09-26 |
| 39 | 9844-DELNP-2008-Form-18-(21-04-2010).pdf | 2010-04-21 |
| 40 | 9844-DELNP-2008-RELEVANT DOCUMENTS [03-10-2023(online)].pdf | 2023-10-03 |
| 40 | 9844-DELNP-2008-GPA-(21-04-2010).pdf | 2010-04-21 |