FIELD: sewage water purification equipment. SUBSTANCE: unit has vertical casing with aerobic treatment chamber comprising aeration device arranged in space adjoining chamber bottom, settling chamber made in the form of annular settler with thin-layer modules and conical bottom equipped with accumulating pockets and silt slots, microflora immobilization charge, sewage water supplying device, active silt recirculation device made in the form of airlift, and purified water discharge device having accumulating chutes arranged in settling chamber above thin-layer modules. Unit is further provided with cylindrical anaerobic treatment chamber with conical bottom and silt mixture overflow chutes, collector for discharging silt sediment and charge regeneration aerator. Microflora immobilization charge arranged in anaerobic treatment chamber is composed of fibrous polymeric members. Unit is adapted for biological treatment of domestic water and industrial water of similar composition from organic contaminants, in particular, of alcohol and milk plants waste water. EFFECT: increased efficiency by improved oxidizing capacity of unit, enhanced reliability in operation and simplified operation and maintenance. 2 cl, 1 dwg
