Process for waste treatment

Details Process for waste treatment Process for waste treatment

C - Chemistry, Metallurgy

02

F

362/54

C02F 1/72 (2006.01)

Patent

CA 1238995

ABSTRACT Wastewater Treatment Aqueous alkaline sulfidic waste effluents are often subjected to air oxidation processes that for economic sizing oxidise the sulfides only to thiosulfates. Thiosulfates are still immediate oxygen demanders and thus their concentration in the effluent must normally be reduced to below a threshold level before the effluent can be discharged. The effectiveness of hydrogen peroxide for this purpose can be significantly improved both as to rate of reaction and extent of removal by employing a copper catalyst in solution.

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