Methods for treating wastewater

Details Methods for treating wastewater Methods for treating wastewater

1993-08-03

1994-11-29

Seidleck, James J.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

525273, 525263, 525294, 525308, 525299, C02F 156, C08F29300

Patent

active

053687442

ABSTRACT:
A method for the flocculation of wastewater comprising a block copolymer having the formula: ##STR1## wherein E is a polymeric segment obtained from the polymerization of hydrophobic monomers, x when present is a nonionic monomer, y is a cationic monomer, R.sub.1 and R.sub.2 are the same or different and are H or a lower alkyl group from C.sub.1 to C.sub.3 and F is a salt of a ammonium cation. The block copolymer is added to the wastewater particularly oily wastewater, to flocculate contaminants.

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