METHOD OF OBTAINING TITANIUM COAGULANT FOR PURIFYING AND DECONTAMINATING NATURAL AND WASTE WATER AND METHOD OF USING TITANIUM COAGULANT FOR PURIFYING AND DECONTAMINATING NATURAL AND WASTE WATER (VERSIONS) Russian patent published in 2010 - IPC C02F1/52 C02F1/50 C01G23/00 C02F103/04 

FIELD: chemistry.

SUBSTANCE: invention relates to the technology of purifying waste water during treatment and purification of waste water from toxic compounds. The method of obtaining a titanium coagulant involves preparation of a flotation concentrate from titanium-containing ore leucoxene, calcination until obtaining a concentrate with titanium dioxide content of not less than 50% and silicon dioxide of not more than 25%. A mixture based on the concentrate, coke and lignosulphonate in ratio of 4:1.3:1 is briquetted and chlorinated at temperature lower than 600°C. After purification, the obtained mixture undergoes synthesis which involves hydrolysis of titanium and silicon chlorides in water and then addition of aluminium hydroxide. The paste-like mass of coagulant obtained after separation of the liquid phase is heated to 102°C and dried at temperature not higher than 135°C. The dried solid phase is crushed to obtain a coagulant in powdered form. The method of using the coagulant involves addition of 10-50% of aqueous solution of titanium coagulant to the purified water in amount of not less than 5 mg/l in terms of the powdered coagulant.

EFFECT: invention enables to obtain high-quality drinking water in real conditions with stable decontamination properties with prolonged effect.

13 cl, 22 tbl, 24 ex