METHOD OF CHEMICAL CLEANING OF REVERSE OSMOSIS FILTERS BY SOLUTIONS OF ENVIRONMENTALLY SAFE COMPLEXES Russian patent published in 2017 - IPC B01D65/06 C02F1/44 

FIELD: chemistry.

SUBSTANCE: method of chemical cleaning of reverse osmosis filters with solutions of ecologically safe complexions includes 3 washing steps: etching, coarse alkaline cleaning, and fine alkaline cleaning, the etching solution contains 2.55 wt % iminodisuccinic acid; the coarse alkaline cleaning solution contains 1.275 wt % of disodium salt of iminodisuccinic acid and 0.1275 wt % OP-10; the fine alkaline cleaning solution contains 1 wt % of a liquid cleanser Kleen^TM MST511, 0.64 wt % of the disodium salt of iminodisuccinic acid and 0.1275 wt % OP-10.

EFFECT: improvement of the filter cleaning quality with the help of solutions based on ecologically safe complexion with high complexing characteristics.

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