SEWAGE WATER BIOCHEMICAL CLEANING METHOD Russian patent published in 2005 - IPC

FIELD: cleaning of sewage water.

SUBSTANCE: invention relates to biochemical cleaning of sewage water and it can be used for local cleaning of sewage of enterprises, offices and dwelling houses. Proposed method of biochemical cleaning of sewage water includes treatment of sewage water in primary settler, saturation of water with oxygen from air and recirculation of active sludge in aeration tank and cleaning of water in secondary settler. Saturation of water with oxygen from air and recirculation of active sludge is done in aeration tank furnished with bioblocks by means of ejector installed in intake chamber. Preliminary cleaning of water from coarse mechanical impurities is carried out in sand trap with subsequent cleaning of sewage water in biofilter located after secondary settler and chlorine water meter.

EFFECT: improved cleaning, reduced volume of sediment formed in process of cleaning.

2 cl, 1 dwg