FIELD: sewage treatment. SUBSTANCE: device for biological cleaning of sewage includes rectangular housing with bottom and walls. Housing is divided into two communicating chambers by means of rows of vertical transversal partitions made in form of modules with biomass secured in them. EFFECT: extended capabilities of device due to combining mixing and forcing-out cycles; simplified construction; ease of maintenance; improved quality of water cleaning; reduced amount of foam; improved ecological conditions. 4 cl, 3 dwg
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