Method of treating sludge containing arsenic

Details Method of treating sludge containing arsenic Method of treating sludge containing arsenic

C - Chemistry, Metallurgy

22

B

C22B 30/04 (2006.01) B09B 3/00 (2006.01) C02F 11/00 (2006.01) C02F 11/14 (2006.01) C02F 1/52 (2006.01) C02F 1/66 (2006.01) C02F 11/12 (2006.01)

Patent

CA 2235523

A method of treatment of an arsenic sludge obtained from a solid-liquid separation step on arsenic waste water by adjusting the value of pH to 12 or higher by adding a calcium compound is disclosed. The method is characterized by addition of hydrated lime and calcining the sludge.

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