Method of removing soluble sulfide residue from scrubber...

Details Method of removing soluble sulfide residue from scrubber... Method of removing soluble sulfide residue from scrubber...

C - Chemistry, Metallurgy

02

F

362/54

C02F 1/58 (2006.01)

Patent

CA 1187214

ABSTRACT OF THE DISCLOSURE Soluble sulfide residue, and small amounts of cyanide and oil, can be removed from scrubber water waste, particularly such waste produced by the process of manu- facturing polyolefins from natural gas condensate, by adding to the scrubber water waste a pickle acid waste, typically from steel operations, in an amount containing sufficient dissolved ionic iron to essentially completely react with all sulfide present and to precipitate it as iron sulfide. The cyanide ion can react to form iron ferrocyanide, which is substantially coprecipitated with the iron sulfide. Small amounts of oil present can also be coprecipitated.

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