FIELD: biological treatment of sewage. SUBSTANCE: a movable carrier of microorganisms is used in the form of porous polymer and copolymer materials containing from 5 to 60 percent of activated coal (density should not exceed that of sewage coming for treatment with the aid of activated sludge. Sewage is subjected to further aeration by oxygen-containing gas; treated water and free activated sludge are subsequently removed from the air tank, with microorganisms being retained in it. EFFECT: higher efficiency. 4 tbl
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