Separating structure
Separation structures are functional components in sewer systems and sewage treatment plants . B. to keep excess water away from the sewage treatment plant in heavy , persistent rain by diversion into septic tanks or receiving waters , since sewage treatment plants can only cope with certain amounts of dirty water in order to remain functional.
function
Simple separating structures have the shape of a round shaft several meters deep with at least three pipe connections arranged at different heights and function according to the overflow principle.
- Waste water inlet
- Discharge to the sewage treatment plant
- Drainage for excess wastewater (overflow)
If the accumulating amounts of wastewater exceed the capacity of the downstream sewer system or that of the sewage treatment plant, the wastewater is dammed up and the level in the separating structure begins to rise. If the level reaches the height of the overflow, the dirty water is diverted into the basin or receiving water.
A controllable variant that can be adapted to the inflow is a relief weir.