| Patent application number | Description | Published |
|---|
| 20080197075 | REMOVING MERCURY AND OTHER HEAVY METALS FROM INDUSTRIAL WASTEWATER - A method of removing one or more heavy metals including mercury from industrial wastewater by use of a filtration and/or a solid-liquid separation system by use of a water soluble ethylene dichloride ammonia polymer. | 08-21-2008 |
| 20080271758 | METHOD OF CLEANING FOULED AND/OR SCALED MEMBRANES - A method of cleaning a fouled and/or scaled UF or MF membrane with a solution containing one or more thermo-responsive polymers is disclosed. More specifically, the method comprises: (a) treating the membrane in a membrane separation system with a solution containing one or more TRP, wherein said TRP is soluble in said solution and at least an effective amount of said TRP diffuses into a foulant layer that is present on the surface and/or in pores of said membrane; (b) making insoluble said TRP diffused into said foulant layer; (c) optionally rinsing the membrane; (d) optionally backwashing the membrane with air and/or liquid between the steps (b) and (c); and (e) optionally backwashing the membrane with air and/or liquid after the membrane is rinsed in step (c). | 11-06-2008 |
| 20090095678 | PURIFICATION OF OIL SANDS POND WATER - A method of enhancing flux of tailings settling pond water from an oil sands process through a membrane separation system and purifying the water comprising is disclosed. The process comprises the following steps: (a) treating the water with an effective amount of one or more water-soluble cationic polymers, amphoteric polymers, zwitterionic polymers, or a combination thereof; (b) passing the treated water through a membrane separation system; and (c) optionally, passing the permeate from step (b) through an additional membrane separation system. | 04-16-2009 |
| 20090272691 | METHOD OF CONDITIONING A MIXED LIQUOR CONTAINING NONIONIC POLYSACCHARIDES AND/OR NONIONIC ORGANIC MOLECULES - A method of conditioning a membrane biological reactor mixed liquor containing one or more nonionic polysaccharides and/or one or more organic molecules is disclosed. | 11-05-2009 |
| 20100051559 | METHOD FOR INHIBITING SCALE FORMATION AND DEPOSITION IN MEMBRANE SYSTEMS VIA THE USE OF AN AA-AMPS COPOLYMER - A method of inhibiting scale formation and deposition from a feed stream passing through a membrane system is disclosed. The method comprises: (a) controlling the pH of said feed stream within the range between about 7.0 and about 8.2; (b) optionally controlling the temperature of said feed stream within the range between about 5° C. to about 40° C. when the membrane system is an RO system, a NF system, an ED system, an EDI system or a combination thereof; (c) optionally controlling the temperature of said feed stream within the range between about 40° C. and about 80° C. when the membrane system is an MD system; and (d) adding an effective amount of a scale inhibitor to said feed stream, said scale inhibitor comprises an AA-AMPS copolymer. | 03-04-2010 |
| 20110108480 | PURIFICATION OF OIL SANDS POND WATER - A method of enhancing flux of tailings settling pond water from an oil sands process through a membrane separation system and purifying the water comprising is disclosed. The process comprises the following steps: (a) treating the water with an effective amount of one or more water-soluble cationic polymers, amphoteric polymers, zwitterionic polymers, or a combination thereof; (b) passing the treated water through a membrane separation system; and (c) optionally, passing the permeate from step (b) through an additional membrane separation system. | 05-12-2011 |
