REACTOR FOR BIOLOGICALLY CLEANING WASTE WATERS Russian patent published in 1998 - IPC

FIELD: waste water treatment. SUBSTANCE: reactor in which waste water is cleaned with activated sludge, further separated or filtered off through fluidized bed, is intended to clean sewage from small isolated pollution sources, for example, private residences, groups of houses, hotels, and small dwelling building blocks. Reactor has activation space and separation space 2 in the form of upward- expanding funnel for fluidized-bed filtration. Activation space 4 between wall 3 of separation space 2 and outside casing 2 of reactor tank is separated by at least one partition 5. Separation space 2 communicates with activation space 4 through canal 13 located before partition 5 and through recycle means 8 with suction pipe directed to the bottom of separation space 2 and outlet pipe located in activation space 4 behind partition. EFFECT: enhanced process efficiency and reduced cost. 27 cl, 14 dwg