METHOD OF OBTAINING ALUMOSILICON FLOCCULANT-COAGULANT AND WATER PURIFICATION METHOD USING SAID FLOCCULANT-COAGULANT Russian patent published in 2010 - IPC C01B33/26 C01F7/74 C02F1/52 

FIELD: chemistry.

SUBSTANCE: invention relates to processing alumosilicon material to obtain inorganic alumosilicon flocculant-coagulant and using the said flocculant-coagulant to purify water in household and industrial systems. To realise the method of obtaining the flocculant-coagulant, alumosilicon material is treated in an aqueous sulphuric acid medium. The liquid phase is separated from the solid phase and dehydrated. The material is treated with concentrated 96% sulphuric acid in components ratio which ensures production of 20-30 % aqeous solution of flocculant-coagulant. The obtained concentrated aqueous solution of flocculant-coagulant is dehydrated to obtain a dry product through vacuum evaporation at temperature below the boiling point of water or through dispersion in the high-temperature stream of a heat carrier gas. The method of purifying water using an alumosilicon flocculant-coagulant is realised in the presence of an activating air additive with subsequent separation of the formed residue. Alumosilicon flocculant-coagulant is used in powder form in amount of 50-100 mg/l or 0.1-2.0 % aqueous solution in amount of 25-100 mg/l.

EFFECT: owing to increase in concentration of the flocculant-coagulant and reduction of the amount of moisture distilled off, power consumption is reduced, the storage period of the product increases to 6 months, the process is simplified and degree of purity of water increases from 78% to 90%.

2 cl, 8 ex