FIELD: sewage treatment. SUBSTANCE: industrial sewage were passed through the sorbent layer cotton fiber on which manganese (III, IV) oxide is immobilized by precipitation of the latter from potassium permanganate solutions into matrix of cotton fiber followed by irradiation by gamma-quantum at exposition dose 2,58·102-2,58·103 cells/kg. Sorption process is carried out at pH of sewage 7.0-7.5. Sorption degree is 96-98% Method can be used in electrotechnical, metallurgy and other branches of industry. EFFECT: improved method of treatment. 1 tbl
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