Reduction of copper discharge to waste streams contaminated with

Details Reduction of copper discharge to waste streams contaminated with Reduction of copper discharge to waste streams contaminated with

1992-11-23

1993-10-12

Silverman, Stanley S.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210764, 210912, 162161, 106 1505, C02F 142

Patent

active

052522237

ABSTRACT:
The discharge of copper from isothiazolone biocides into industrial waste water streams is prevented by contacting the isothiazolone biocide as it is withdrawn from a point of use storage container with an ion exchange resin capable of removing copper from aqueous solutions. When the treated isothiazolone biocide is added to an industrial process water which will produce waste stream, potential copper contamination is virtually eliminated.

REFERENCES:
patent: 4303704 (1981-12-01), Courduvelis et al.
patent: 4824575 (1989-04-01), Schlossel
patent: 5108500 (1992-04-01), Mattox

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