Sewage channel system for covering large area - has small bore channel fed through tanks with valves and pumps

摘要

The sewage removal system serves a number of buildings. This system uses pipes of relatively small diameter. These pipes do not have to be placed at an inclination but they can follow the shape of the terrain. No lifting station or syphons are used for transfer of sewage. Between the main sewer and a sewage disposal point is fitted a collection tank. The larger particles in the tank content are comminuted. The pump on the outlet end of the cuting arrangement ejects sewage under considerable pressure. This pump delivers the sewage under pressure to a feeder point through a nonreturn valve. An antisyphon nonreturn valve enables entry of air into the outlet pipeline.