Floating solids return device

摘要: A sewage treatment system in which liquid sewage, containing solids, is conducted into a first or primary settling tank. Liquid drawn from an intermediate depth of the tank and to reducing aerator operated on periodic basis induces current pattern fluid final outflow adjacent includes wall common with under settled solids return floating also provided between tanks, provision for utilizing flow induced by educt The has opening faces same direction toward current, aerator, flows. effluent