Detoxification of aqueous waste streams containing cyanide

Details Detoxification of aqueous waste streams containing cyanide Detoxification of aqueous waste streams containing cyanide

1976-05-24

1977-01-18

Wyse, Thomas G.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210DIG31, C02C 502

Patent

active

040038335

ABSTRACT:
A method is provided for treating aqueous streams containing minor amounts of cyanide i.e., up to about 1000 ppm, to reduce cyanide content to less than 1 ppm by contacting said stream with formaldehyde and a compound capable of generating the HSO.sub.3 .sup.- ion at specified conditions of pH, temperature and reactant-cyanide ratios.

REFERENCES:
patent: 3505217 (1970-04-01), Morico
patent: 3729413 (1973-04-01), Csuros et al.
patent: 3900555 (1975-08-01), Jourdan-Laforte

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