Wet oxidation method of treating chelate bearing waste solutions

Details Wet oxidation method of treating chelate bearing waste solutions Wet oxidation method of treating chelate bearing waste solutions

1995-04-19

1997-05-27

Wyse, Thomas G.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210724, 210761, 210912, C02F 172

Patent

active

056329008

ABSTRACT:
A method for treating a chelate bearing waste solution employs a two-step process which includes elevating the pH of the solution to a pH greater than 10 and precipitating the metal as the hydroxide out of solution, followed by treating the resultant solution with an oxidant to destroy any remaining free chelate.

REFERENCES:
patent: 4419246 (1983-12-01), Jayawant
patent: 4512900 (1985-04-01), Macur et al.
patent: 4629570 (1986-12-01), Kennedy, Jr.
patent: 5160631 (1992-11-01), Frost et al.
patent: 5178772 (1993-01-01), Daley et al.
Evans, D.W. et al., "Treatment and Disposal of Steam Generator and Heat Exchanger Chemical Cleaning Wastes", Ontario Hydro Research, pp. 1-12, admitted art.
Beller, John, "Supercritical Water Oxidation Program", admitted art.
"Pilot Plant Evaluation of the Mobile Wet Oxidation Process", Finger, S. et al.
Duratek Corp., Atwood, Allen, Bechtel Corp. admitted art.

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