Sewage treatment plant - with bell shaped concentric aeration and preclarification zones inside funnel shaped final clarification basin

摘要

A sewage treatment plant consists of a single funnel-shaped basin with a sludge collecting it at the bottom and a vertical sludge suction pipe. The central part is turned by a bell-shaped shell with aeration pipes inside into an activation tank. This is surrounded by another concentric pear-shaped shell to produce a preliminary and a final clarification tank. The treatment plants saves cost for the excavation and the appts. The plant operates reliably and has a very low power consumption.