INSTALLATION FOR BIOCHEMICAL PURIFICATION OF SEWAGE Russian patent published in 2004 - IPC

FIELD: urban sewage purification. SUBSTANCE: the invention presents an installation for biochemical purification of urban sewage, that are pumped by the sewage pumping plants through the pressure pipelines to the stations of a biological purification. The Installation contains a tower type aeration tank with clusters of aeration located in its upper part and the aeration pipes located inside it, a sewage taking-in chamber with clusters of aeration and pomps feeding a sewage liquor into the aeration tank, a secondary settling tank, the technological pipelines for water delivering and exporting, the secondary settling tank outlet is equipped with pomps linked with a water exporting pressure pipeline through an ejector feeding air in it, that ensures running of the biochemical processes in the pressure pipelines under conditions of active mixing. EFFECT: improved quality of the urban sewage purification. 1 cl, 1 dwg