METHOD FOR ENERGY-INDEPENDENT, NON-REAGENT, NON-TOXIC PURIFICATION OF WATER FROM MICROBIOLOGICAL CONTAMINANTS BASED ON NANOTECHNOLOGIES Russian patent published in 2011 - IPC C02F3/06 B82B3/00 C02F1/50 

FIELD: chemistry.

SUBSTANCE: invention relates to household and industrial techniques for purifying water from microbiological contaminants, controlling bio-growth in water filtration, storage and supply systems. The method for energy-independent, non-reagent, non-toxic purification of water from microbiological contaminants involves flow a stream of treated water through a bactericidal filter element made from porous polymer material modified with nanostructure particles, immersed in the treated water and placed along the direction of flow of the water stream. The porous polymer material used is polyethylene and the nanostructure particles are silver or copper particles. The flow rate of the treated water is not higher than 2.5 m/s. Geometrical dimensions of the system of filter elements are calculated based on that the time it takes the water to flow through the filter elements is not less than 0.25 s, and the ratio of the cross section of the stream of treated water and the bactericidal filter element is not more than 5:1.

EFFECT: non-reagent purification of water from microbiological contaminants without pre-treatment of the water with efficient use of bactericidal properties of non-toxic nanocomposite materials, preventing migration of nanostructured metals strongly fixed in pores of the bactericidal filter elements.

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