METHOD FOR BIOLOGICAL DECONTAMINATION OF TREATED WASTE WATERS Russian patent published in 2009 - IPC C02F3/34 C02F1/32 

FIELD: water supply.

SUBSTANCE: invention may be used for protection of biocoenosis. Out of structures of biological treatment of drainages, water along pipeline 1 is supplied to device 2 of ultraviolet radiation (UVR). Service tank 5 with the help of pump 7 is filled with purified waste liquid, and due to tangential input of pipeline 6, microbiological preparation is mixed to waste fluid. Out of service tank 5, mixture of microbiological preparation with treated fluid is sent to mixer 4, where it is mixed to the main volume of waste waters, which also come to mixer 4 from device 2 of UVO. Then along 8 treated liquid is sent to conical part of bioreactor 10, simultaneously providing for its distribution with the help of reflector 9. If relatively even flow of the whole volume of waste water is maintained through nozzle 11, most complete contact of their waste waters is provided with immobilised microorganisms. Water treated in bioreactor 10 is discharged into water object along pipeline 14. Residue accumulated in lower conical part 12 of bioreactor 10 is periodically drained along pipeline for recycling into system of residue treatment.

EFFECT: invention makes it possible to provide for reliable protection of water objects biocoenosis, to simplify technology of drainage decontamination and to improve conditions that affect public health.

1 cl, 1 dwg