METHOD FOR PURIFYING WATER FROM SULFUR COMPOUNDS Russian patent published in 2017 - IPC C02F1/72 

FIELD: chemistry.

SUBSTANCE: method for purifying water from sulfur compounds involves saturation of water with oxygen or air in the presence of an oxidation catalyst, which uses an aqueous solution of an iron complex with ethylenediaminetetraacetic acid. The catalyst and oxygen or air are fed directly to the water stream with sulfur compounds at a pH of 2 to 11. The catalyst is fed in a concentration of 0.1 to 3 meq/l and the oxygen is supplied in volumes equal to or greater than the required volumes by stoichiometry, for the conversion of sulfur compounds to elemental sulfur, followed by the separation of water from elemental sulfur.

EFFECT: invention allows in a continuous mode to purify water from sulfur compounds and to accelerate the process of their oxidation, as well as to reduce the cost of water purification, to minimize the amount of solid waste and wastewater to be recycled or utilized.

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