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Cyanide removal from aqueous streams

  • US 4,537,686 A
  • Filed: 03/08/1984
  • Issued: 08/27/1985
  • Est. Priority Date: 01/28/1981
  • Status: Expired due to Term
First Claim
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1. The method for treating aqueous effluent to reduce the total cyanide content of said aqueous effluent solution which comprises treating said effluent solution with an oxygen-containing gas and a reagent from the group consisting of sulfur dioxide, an alkali or alkaline earth metal sulfite or bisulfite, at a pH of about 5 to about 12 in the presence of a copper catalyst.

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