Inflatable gates in sewage water systems

3D-design of an inflatable sewer gate
3D-design of an inflatable sewer gate

Inflatable sewer gates are installed in sewage ducts of combined sewage systems.

In combined sewage systems, rain water and wastewater are channeled together to the water treatment plant. As the collector duct and the water treatment plant are designed for a limited capacity, part of the sewage water from heavy rains must be stored temporarily to ensure that the water treatment plant’s capacity is not exceeded.

The installation of inflatable sewer gates allows the use of the existing sewage duct as an intermediate reservoir. The discharge volume passing across the inflatable sewer gates can be regulated in such way that the capacity of the connected sewage treatment plants is not exceeded. Inflatable sewer gates are generally designed as air filled rubber gates. Depending on the design, the complete cross section of the sewage duct can be closed.

Inflatable sewer gates offer several advantages:

  • They can easily be installed in existing sewage water systems.
  • The simple design of inflatable gates requires low maintenance.
  • Electro-mechanical components can be installed in easily accessible operating shafts.
  • Existing sewage ducts can be used as buffer reservoirs for sewage water.