SEWAGE WATER BIOLOGICAL PURIFICATION SYSTEM Russian patent published in 2005 - IPC

FIELD: biological purification constructions for purifying of domestic and industrial water by means of active silt.

SUBSTANCE: system has aeration tank, primary and secondary settlers, pumping station adapted for supplying of silt mixture from aeration tank into primary settler, pipes for supplying of basic sewage water and purified water, silt mixture and return active silt, bypass pipe with locking-regulating fittings, and sediment removal apparatus mounted in primary settler and connected with aeration tank. Apparatus has partition wall equipped with bypass openings and adapted for dividing said apparatus into two equal parts. Bypass pipe is positioned for supplying of basic sewage water into aeration tank.

EFFECT: provision for standard quality of purified water and maintaining loading of silt at abrupt increase in volume of basic sewage, and increased capacity of purification constructions above design value.

1 dwg, 1 tbl