Liquid purification or separation – Processes – Chemical treatment
Patent
1993-12-23
1996-09-03
McCarthy, Neil
Liquid purification or separation
Processes
Chemical treatment
210904, C02F 172
Patent
active
055520626
ABSTRACT:
A method for treating waste water contaminated with cyanide ion, such as mine acid water is provided. The apparatus is readily portable and comprises a reaction vessel having an aerator motor operatively associated therewith. Water to be treated is received within said reaction vessel and is treated by having a neutralizing agent by way of chemical pumps and oxidant by way of the aerator introduced simultaneously into the system. Because of instantaneous elevation of pH resulting from the simultaneous introduction of oxidant and the neutralizing agent, the reaction time is greatly reduced and the equipment required is small, compact and easily transported. Where concentrations of manganese are present in the waste water being treated in this process, it is preferred that those manganese concentrations be reduced before the method of the present invention is initiated.
REFERENCES:
patent: 3617567 (1971-11-01), Mathre
patent: 3826741 (1974-07-01), Nakamura
patent: 3920547 (1975-11-01), Garrison et al.
patent: 4749497 (1988-06-01), Kanzleiter et al.
patent: 4822496 (1989-04-01), Griffiths et al.
patent: 5106508 (1992-04-01), Schwitzgebel
Long Daniel J.
McCarthy Neil
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