Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1996-09-23
1997-10-21
Hruskoci, Peter A.
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210734, 210735, C02F 156
Patent
active
056792611
ABSTRACT:
The invention is a method for clarifying waste water containing turbidity-causing components which comprises: adding to said water an effective turbidity-reducing amount of a water-soluble silicon-containing copolymer coagulant prepared from diallyldimethylammonium halide and a vinyltrialkoxysilane; mixing said copolymer and said water with a mechanical stirring device for sufficient time to allow flocculation of the turbidity-causing components; and then separating the flocculated turbidity-causing components from the waste water to obtain clarified water. Useful polymers for the practice of this invention are copolymers of diallyldimethylammonium halide and vinyltrialkoxysilane.
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Ramesh Manian
Sivakumar Ananthasubramanian
Drake James J.
Hruskoci Peter A.
Miller Robert A.
Nalco Chemical Company
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