PHOTOCHEMICAL METHOD OF NEUTRALISATION OF THIOCYANATE-CONTAINING WASTEWATER AND SEWAGE Russian patent published in 2017 - IPC C02F1/32 C02F103/16 C02F101/18 

FIELD: chemistry.

SUBSTANCE: invention relates to the treatment of wastewater and sewage containing thiocyanates (SCN^-), and can be used on non-ferrous metallurgy, chemical and gold mining industry. Thiocyanate-containing waste water simultaneously subjected to ultraviolet (UV) radiation and processing by persulfate (S₂O₈^2-) in the presence of iron (III) ions when the molar ratio [S₂O₈^2-]:[SCN^-] 5:1.

EFFECT: method allows to achieve a high degree of purification of waste water in a wide range of pH medium and the concentrations of pollutant specified for a short period of time by using different sources of UV radiation, emitting both narrow and wide band optical range, as well as lower operational costs and reduce the cost of the cleanup, the proposed method does not require the introduction of any pH medium regulators in the reaction zone, improving sanitary conditions at the expense of low-toxic easy to handle and transport agents.

2 cl, 2 tbl