FIELD: chemistry.
SUBSTANCE: invention relates to chemical industry and environment protection. Silver is extracted from water with application of compositional sorbent in quantity 50-200 mg/dm3 of water. Sorbent consists of cellulose fibres which contain, in wt %, not less than 94 % of fibres with length not more than 1.23 mm and not less than 54% of fibres with length not more than 0.63 mm, and immobilised on them lead sulphide in quantity 50-300 wt.f. per 100 wt.f. of fibres. Processed water is separated from sorbent by pressure flotation. Float-sludge or its part is returned into process of water processing. Float-sludge and processed water discharged from the process are utilised.
EFFECT: method makes it possible to increase degree of water purification and speed of purification process.
6 cl, 3 ex
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