Method of removing soluble sulfide residue from scrubber water w

Details Method of removing soluble sulfide residue from scrubber water w Method of removing soluble sulfide residue from scrubber water w

1981-05-08

1983-12-06

Wyse, Thomas G.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210919, C02F 158

Patent

active

044192479

ABSTRACT:
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 manufacturing polyolefins from natural gas, 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.

REFERENCES:
patent: 2679537 (1954-05-01), Knowlton
patent: 3736239 (1973-05-01), George et al.

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