Heavy metal removal from wastewater sludge

C - Chemistry – Metallurgy – 25 – C

Patent

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362/9, 204/89.5

C25C 1/00 (2006.01) C02F 1/467 (2006.01) C02F 3/02 (2006.01) C02F 3/30 (2006.01) C02F 9/00 (2006.01)

Patent

CA 1128460

ABSTRACT OF THE DISCLOSURE Insoluble heavy metal sulfides in activated sludge are converted by biochemical oxidation to soluble sulfates, followed by deposition of metals on cathode from sludge as electrolytic bath.

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