Vacuum Sewer Systems - Operation and Components

Depending upon the topography wastewater is collected with a radius of many kilometres around the central vacuum station. Wastewater flows through a conventional gravity drain from each house to a RoeVac^® collection chamber installed outside the building.

As soon as a pre-determined volume of wastewater is collected in the collection chambers sump, the hydrostatic pressure activates a pneumatic controller. This pneumatic controller opens a vacuum valve and the wastewater in the chamber is completely evacuated into the vacuum sewer pipe. No electricity is required at the collection chamber as all operations entirely pneumatic.

As air is admitted through upstream vacuum valves, the wastewater flows at high velocity through the sewer system to the central vacuum station. The RoeVac^® system guarantees maximum operational safety with minimum energy costs. In some circumstances the vacuum sewers can be laid using trenchless technology or be placed above ground.

View video for sewage function.