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US 5,632,900 AGranted
Wet oxidation method of treating chelate bearing waste solutions
AssigneeThe Babcock & Wilcox Company
InventorsJohn M. Jevec, Carl J. Lenore
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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.
Claims3
A method for treating a chelate metal bearing waste solution from a chemical cleaning solution for a steam generator, comprising the steps of:
- elevating the pH of the chelate bearing waste solution from a chemical cleaning solution for a steam generator to a pH of greater than about 10.0 for separating a metal from the chelate bearing waste solution as a precipitate;
- filtering the chelate bearing waste solution after precipitation to remove the metal precipitate;
- and
- oxidizing the chelate bearing waste solution to destroy any remaining free chelates.
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Dependencies are inferred from the claim text.