METHOD OF FOR THREE-SILT SYSTEM OF PURIFICATION OF SEWAGE Russian patent published in 2005 - IPC

FIELD: methods of biological purification of sewage.

SUBSTANCE: the invention is pertaining to the methods of biological purification of sewage and may be used in a municipal services, in various industries to decrease volumes of the capacitive structures, volumes of produced sediments, to increase stability of production of the purified water of a high quality, to control operation of the sewage purification plant. The method provides for a sewage passing through the first silt system made with a possibility to use the heterotrophic bacteria fixed on the rigid barbed head made out of the polymeric brushes, working at an organic substances loading of 1.0 kg of BOD (biochemical oxygen demand) per one kg a day of the dry ashless silt. Then the water is passing through the second silt system, having a possibility to use the active silt free-floating in the thin-layer pulsating silt-separators at the average hourly pass of the consumed sewage in the rack space at Reynold's number of no more than 250. In the third silt system the tank is divided by septums into bays and in the first downstream sewage purification bay allocate a chamber supplied with a thin-layer silt separator for the regeneration waters of the third silt system and then excessive active silt of the second silt system, the weirs for withdrawal of the above silt waters into the first bay of the third silt system and a water-feeder launder for collection of the regeneration waters from all bays of the third silt system and an excessive active silt of the second silt systems into the chamber. The technical result is an increased stability of the sewage purification plant operation and production of the qualitatively purified water, regulation of the sewage purified plant operation.

EFFECT: the invention ensures an increased stability of the sewage purification plant operation and production of the qualitatively purified water, regulation of the sewage purified plant operation.

1 dwg