METHOD OF NEUTRALISING SULPHIDE-ALKALINE LIQUID EFFLUENTS Russian patent published in 2008 - IPC C02F9/14 C02F1/78 C02F103/36 

FIELD: chemistry.

SUBSTANCE: method involves putting carbon dioxide and ozone-air mixture in series in three stages into a turbulent stream of sulphide-alkaline effluents. The carbon dioxide at a volume ratio of 5-8:1 to the volume of the liquid effluent is put only at the first stage along the stream. On the following two stages, the ozone-air mixture with ozone content of not less than 25.0 g in 1 m³ of the mixture in a volume ratio of 8-10:1 to the volume of the liquid effluent.

EFFECT: method allows increasing the efficiency of the process of neutralising liquid effluents; lower discharge of carbon dioxide and lower toxicity of the gases.

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