How should cyanide-containing industrial wastewater be treated?


Release time:

2024-04-30

Cyanide-containing industrial wastewater is divided into inorganic cyanide and organic cyanide. Cyanide-containing pollutants are unstable and toxic in water and are easy to decompose. If humans eat them by mistake, they will cause acute poisoning. Therefore, industrial wastewater containing cyanide compounds that will be discharged should be treated before discharge. This article explains how to deal with cyanide-containing industrial wastewater?

Cyanide-containing industrial wastewater is divided into inorganic cyanide and organic cyanide. Cyanide-containing pollutants are unstable and toxic in water and are easy to decompose. If humans eat them by mistake, they will cause acute poisoning. Therefore, industrial wastewater containing cyanide compounds that will be discharged should be treated before discharge. This article explains how to deal with cyanide-containing industrial wastewater?
Containing cyanide industrial wastewater, wastewater should be how to deal
For industrial wastewater containing cyanide compounds in the electronics industry, metal surface treatment, tanning, chemical industry, metallurgy, metal processing, chemical fiber, gas, coking, plastics, pesticides and other industries.
Because the industrial wastewater containing cyanide generally contains some heavy metals, this part of the heavy metals can be recycled after processing, so this kind of sewage needs to be treated in combination.
Cyanide compound is also a recoverable organic matter, which can be recovered by steam desorption method or alkali absorption method-alkali absorption method.
Oxidation treatment method: oxidation treatment is subdivided into Fenton oxidation method, ozone oxidation method, alkaline chlorination method, etc. The oxidation of the oxidant can oxidize the cyanide substance in the wastewater to cyanate, and then oxidize or hydrolyze the cyanate into carbonate and nitrogen or ammonia.
After the treatment of cyanide compounds, the wastewater can be selected by ferrous sulfate method, air stripping method, pressurized hydrolysis method, biochemical method, alkaline chloride method, electrolytic oxidation method, biological iron method, etc.

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