Process and apparatus for waste water treatment

Details Process and apparatus for waste water treatment Process and apparatus for waste water treatment

1992-04-14

1993-05-04

Silverman, Stanley S.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210734, 210912, 134 10, 134 13, C02F 156, C02F 162

Patent

active

052079236

ABSTRACT:
The present invention relates to method and apparatus for treating waste water, particularly metal-containing waste water. The process includes separating and removing metals and other impurities from the waste water by the sequential addition of a base, a polyelectrolyte and an acrylamide-containing copolymer dispersion. The purified water is recycled for continuous reuse while the small quantities of metal-rich residue are available for reclamation.

REFERENCES:
patent: 3171804 (1965-03-01), Rice
patent: 3506570 (1970-04-01), Wukasch
patent: 4173532 (1979-11-01), Keoteklian
patent: 4417976 (1983-11-01), Sander et al.
patent: 4710304 (1987-12-01), Lang
patent: 4714558 (1987-12-01), Barbee et al.
patent: 4724085 (1988-02-01), Pohoreski
patent: 4758353 (1988-07-01), Spence et al.
patent: 4882069 (1989-11-01), Pohoreski

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