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1. Purification method The cyanide is oxidized to CO 2 , NH 3 , N 2 by various oxidants, or the physical treatment method is used to improve the treatment effect on the basis of chemical oxidation, thereby destroying the cyanide in the cyanide-containing sewage and changing it. It is a non-toxic waste liquid. Purification of natural hair, bleaching powder, chlorine, electrolysis, Inconel SO 2 - Air Act, ozonation, biochemical oxidation and activated carbon adsorption method and the like.
2. Cyanide regeneration and recovery method According to the content, form, properties and other components of cyanide in wastewater, acidification, air stripping, desorption, zinc sulfate, ion exchange, etc. can be used to recover cyanide and copper in wastewater. , zinc and other ingredients.
3. The whole process of recycling the poor liquid to realize the technology of no cyanide-containing wastewater discharge pollution.
Cyanide-containing sewage treatment method