Why is oxidation necessary for wastewater containing cyanide?

Oxidation is a crucial process in treating wastewater containing cyanide because it helps convert the toxic cyanide compounds into non-toxic forms. Cyanide, whether present as free cyanide or in metal cyanide complexes, is hazardous and poses significant risks to both human health and the environment. The oxidation process breaks down cyanide through chemical reactions, resulting in substances such as carbon dioxide, nitrogen gas, and other less harmful products.

Ensuring that cyanide is effectively treated is vital for compliance with environmental regulations and for protecting water quality. Thus, the primary purpose of oxidation in this context is to transform toxic substances into safer ones, rendering the wastewater suitable for further treatment or discharge into the environment.