WATER DISINFECTION METHOD Russian patent published in 2014 - IPC C02F1/50 C02F1/72 A01N59/16 

FIELD: chemistry.

SUBSTANCE: invention relates to complex water treatment with a sodium persulphate oxidising agent and heavy metal ions, particularly silver, copper and zinc, and can be used to disinfect recycled pool water and post-treatment of industrial waste water. The water disinfection method includes treating said water with an oxidising agent and copper and silver ions obtained by dissolving salts thereof, after which the water is held for 0.5-2 hours. Zinc ions are optionally used. The oxidising agent used is 0.2-0.4% aqueous sodium persulphate solution, which is added to the water simultaneously with copper, silver and zinc salt solutions until achieving the following concentrations thereof in the water: sodium persulphate 1-5 mg/l; silver ions 0.02-0.05 mg/l; copper ions 0.07-1.0 mg/l; zinc ions 3.0-5.0 mg/l. Water treatment is carried out at 10-25°C.

EFFECT: invention provides water disinfection and prevents repeated bacterial infection of the water for a long period of time.

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