Patent ID: 7514007
Filing Date: 2009-04-07
Classification: A61K,A61Q,C02F,C04B,C08B,C08F,C08L,C09K,D21H,Y10S

Abstract:
1. A method of dewatering a waste sludge comprising: adding an effective amount of a water-soluble interjacent complex to the waste sludge, the water-soluble interjacent complex comprising: dewatering the waste sludge; wherein the water-soluble polymer is selected from the group consisting of water-soluble poly(meth)acrvlates, water-soluble polyamides, water-soluble polyesters, water-soluble polyurethanes, water-soluble poly(vinyl amine), water-soluble poly(ethylene imine), water-soluble amine/epihalohydrin polyamines, water-soluble poly(meth)acrylamide, water-soluble (meth)acrylamide copolymers, water-soluble poly(meth)acrylic acid, water-soluble copolymers of (meth)acrylic acid, poly(diallyl dimethyl ammonium halides), copolymers of diallyl dimethyl ammonium halides, water-soluble vinyl pyrrolidone, water-soluble copolymers of vinyl pyrrolidone, poly(meth)acrylamidopropyltrimethyl ammonium halides, copolymers of (meth)acrylamidopropyltrimethyl ammonium halides, poly(meth)acryloyloxyethyltrimethyl ammonium halides, copolymers of (meth)acryloyloxyethyltrimethyl ammonium halides, poly(meth)acryloyloxyethyltrimethyl ammonium methyl sulfate, copolymers of (meth)acryloyloxyethyltrimethyl ammonium methyl sulfate, xanthan gums, sodium alginates, galactomanans, carageenan, gum arabic, hydroxyethyl cellulose, hydroxypropyl cellulose, diallyl dimethyl ammonium chloride graft copolymers of hydroxyethylcellulose, polymeric quaternary ammonium salts of hydroxyethyl celluloses reacted with a trimethyl ammonium substituted epoxide, polymeric quaternary ammonium salts of hydroxyethyl celluloses reacted with lauryl dimethyl ammonium substituted epoxides, a quaternary ammonium derivative of hydroxypropyl guar and combinations thereof.