COMPACT UNIT FOR BIOLOGIC WASTE-WATER PURIFICATION Russian patent published in 1999 - IPC

FIELD: biologic purification of waste water in aeration tanks. SUBSTANCE: unit has aeration tank 1 built up of at least two cylindrical modules accommodating aeration systems. Each aeration system has pipelines connected to fans 2 which may operate both sequentially and concurrently. Some of pipelines 3 are flexible which enables adjustment of insertion depth of air hose connected to sprayer 5. Aeration tank 1 holds shell 6 which provides for multiple cleaning of liquid. Air lift 10 of unit is made for controlling insertion depth of flexible hose 11. Mud separator 7 mounted in aeration tank and used to prevent active mud settling on tank bottom is provided with thin-layer module 7 and baffle 20 that functions as damper. EFFECT: increased capacity due to improved water circulation conditions and active saturation of water with atmospheric oxygen. 5 cl, 2 dwg