Solution waste treatment

Details Solution waste treatment Solution waste treatment

1979-05-21

1981-04-07

Hruskoci, Peter A.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

75109, 210719, 210753, 210756, 210912, C02F 152

Patent

active

042604931

ABSTRACT:
A process is provided for the waste treatment of metal plating solutions One embodiment of the process comprises removal of the metal values contained in solution and inactivation or destruction of the complexing agent's ability to complex heavy metals. A second embodiment comprises inactivation or destruction of the complexing agent as a first step, formation of a sludge if not formed by inactivation of the complexing agent and sludge removal. Either embodiment permits direct discharge of spent plating solutions into the environment without violation of federal or municipal regulation.

REFERENCES:
patent: 3494760 (1970-02-01), Ginder
patent: 3666447 (1972-05-01), Saubestre
patent: 3767572 (1973-10-01), Bober et al.
patent: 3770630 (1973-11-01), Kamperman
patent: 3802910 (1974-04-01), Gerow et al.
patent: 3957506 (1976-05-01), Lundguist et al.
patent: 4072605 (1978-02-01), Thelander
patent: 4159309 (1979-06-01), Faul et al.
patent: 4172785 (1979-10-01), Knorre et al.

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