Rain clarifier

Rain clarifier on the Zschonerbach in Dresden

This article or the following section is not adequately provided with supporting documents ( e.g. individual evidence ). Information without sufficient evidence could be removed soon. Please help Wikipedia by researching the information and including good evidence.

A rain clarification basin ( RKB ) is a settling basin for the treatment of polluted rainwater in a separation system with an integrated separation of light materials . One distinguishes

• Rain clarification basin with permanent damming ( RKBmD ): Rain clarification basin that is constantly filled with water and from which the sediments are removed only at larger time intervals
• Rain clarifier without permanent storage ( RKBoD rain clarifier, which after each:) impounding is completely emptied, and therefore with a pump . Ä o must be equipped..

In soil filter systems , RKB are mandatory construction components with three main functions:

• Hydraulically, they are used to delay and smooth inflow peaks.
• In terms of material, they serve as a mixing and balancing medium for load peaks
• In terms of material, they are used for pre-cleaning through light material separation and sedimentation. The removal of particulate matter effectively lowers the risk of colmation in the downstream floor filter.

In 2007, 3194 rain clarification basins with a storage volume of around 2.7 million cubic meters were in operation in Germany.