Method of treating wastewater containing heat-curable (meth) acr

Details Method of treating wastewater containing heat-curable (meth) acr Method of treating wastewater containing heat-curable (meth) acr

1991-10-18

1992-09-22

Silverman, Stanley S.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210724, 210725, 210726, 210727, 210734, 210757, 210765, 210805, 210702, C02F 170, C02F 158, C02F 156

Patent

active

051494418

ABSTRACT:
A method of treating wastewater including a heat-curable (meth)acrylic monomer-containing composition, at temperature below that necessary to effect heat-curing of the composition. The wastewater may be produced by aqueous washing of porous parts impregnated with a sealant composition containing such monomer. The monomer-containing wastewater is (1) adjusted in pH to a value in the range of from about 8 to about 10, and (2) contacted with an effective amount of a reducing agent which is polymerizingly effective for the monomer, to yield corresponding polymer from the monomer. The wastewater is mixed with a cationic flocculating agent in sufficient quantity to flocculate the polymer in the wastewater, and the resulting wastewater is physically separated to recover a monomer- and polymer-reduced wastewater effluent which may be discharged to receiving waters.

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