FIELD: sewage treatment. SUBSTANCE: frezot is used for sewage treatment as coagulant. Frezot is dosed at stirring to the flocculation chamber at concentration 1-1.5 l/1m3. Mixture is settled, precipitate is separated and treated water is fed to the sewer system or to the biological treating equipments. Treatment degree of sewage is 95% Method ensures to provide treatment from the broad spectrum of organic and inorganic compounds: chrome, dyes, fats, proteins, petroleum products. EFFECT: improved and simplified method, increased degree of treatment. 2 cl, 3 tbl
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