C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/58 (2006.01) C02F 1/72 (2006.01) C02F 5/08 (2006.01) C02F 9/00 (2006.01)
Patent
CA 2057728
ABSTRACT OF THE DISCLOSURE Method of treating cyanide contained in wastewater with particularly high levels of solids in the stream. The process involves either simultaneous or step-wise dosage of hydrogen peroxide in the form of an aqueous solution of a concentration between 35% to 90% by weight, preferably at least 50% by weight, and SO2 either in the form of gaseous SO2 or solution of sodium and/or potassium sulfite or metabisulfite resulting in the conversion of cyanide ions to non-toxic cyanate ions.
Ahsan M. Quamrul
Gos Stephen
Knorre Helmut
Merz Friedhelm
Norcross Roy
Ahsan M. Quamrul
Aktiengesellschaft Degussa
Gos Stephen
Knorre Helmut
Marks & Clerk
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