METHOD OF REMOVING ANIONIC SURFACTANTS FROM WASTE WATER Russian patent published in 2014 - IPC C02F1/52 C02F1/58 C02F101/30 C02F103/38 

FIELD: chemistry.

SUBSTANCE: waste water is treated with a titanium-aluminium coagulant. The obtained gravitational sediment of the formed suspension is separated from the purified water. The source of the titanium-aluminium coagulant used is waste water from the step of washing isoprene rubber with water from a catalyst based on titanium and aluminium compounds with weight ratio Ti/Al of not less than 0.3. The coagulant dose in terms of titanium and aluminium ions is not less than 50 mg/l of the treated water, and the mixture of waste water and the coagulant is held at pH 4.5-9.0 and temperature of 30-45°C.

EFFECT: method provides an effective, simple and cheap technique of purifying waste water from synthetic anionic surfactants to a quality which enables to deliver said water for biological treatment.

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