FIELD: biological treatment of sewage. SUBSTANCE: equipment has container 1, water supply pipe 2, distribution tray 3 and a clean-water outlet system. Trays 11 are attached to supporting bridges 9. The trays are made in the form of meshed frames with a limiting edge and meshed top covers. The meshed bottoms and covers are filled with a layer of alga Vaucheria. Through pipe 2 and tray 3 sewage enters container 1 where it consecutively passes through inclined trays 11 filled with Vaucheria. EFFECT: higher efficiency and accuracy. 1 cl, 3 dwg
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