TOWER AERATION TANK Russian patent published in 1994 - IPC

FIELD: biological sewage trearment. SUBSTANCE: tower aeration tank has cylindrical-conical housing divided by coaxially located cylindrical partition into central aeration chamber and peripheral chamber of biological filtration. Aerator is mounted under aeration chamber at the bottom. Positioned over aerator is mixer made up of cylindrical-conical chambers arranged coaxially one above the other in the form of a chain.Immobilization charge is positioned in biological filtration chamber and may be also positioned in aeration chamber. Mixer ensures stable circulation flows of treated sewage enriched with oxygen. EFFECT: enhanced efficiency and improved quality of sewage treatment with lower power consumption. 3 cl, 1 dwg