METHOD AND DEVICE FOR SEWAGE TREATMENT Russian patent published in 2010 - IPC C02F3/02 

FIELD: water supply.

SUBSTANCE: invention is intended for use in systems of sewage treatment, in particular in pulp and paper industry. At first sewage passes through stage of mechanical treatment, afterwards it is supplied to reservoir 1 with activated sludge. Then along pipeline 7 it is supplied to reservoir 2 for further lightening. Mixture of activated sludge with sewage water, which flows out of reservoir 1 with activated sludge and/or from reservoir 2 for further lightening, is supplied to dehydrating device 3. Separated activated sludge from reservoir 2 along pipeline 6, and also from dehydration device 3 along pipeline 5 is returned back into reservoir 1 with activated sludge. Partially treated water along pipeline 9 from reservoir 2 is supplied to filtering system 4. Treated water from filtering system 4 along pipeline 10 and dehydration device 3 along pipeline 11 is supplied to water collector.

EFFECT: invention makes it possible to develop device and method for sewage treatment, in case of which control costs may be reduced.

26 cl, 6 dwg