Method for processing solution including heavy metal

Details Method for processing solution including heavy metal Method for processing solution including heavy metal

1980-10-08

1982-12-07

Wyse, Thomas G.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210748, 210757, 210912, C02F 162

Patent

active

043626297

ABSTRACT:
A method for processing a waste solution used in a chemical plating process and including a heavy metal complex salt, a reducing agent, and a pH adjusting agent. The heavy metal complex salt is decomposed into a heavy metal component and a complexing agent component by applying ultrasonic vibration to the waste solution. The heavy metal component obtained by decomposition is in a powder state. Then the waste solution is filtered, so that the heavy metal component may be separated from the complexing agent component.

REFERENCES:
patent: 3686115 (1972-08-01), Forman et al.
patent: 4055491 (1977-10-01), Porath-Furedi
patent: 4260493 (1981-04-01), Kretas et al.

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