Translations:Versickerung und Retention/22/en

Collection and filter chambers consist of a sedimentation area in which heavy particles settle and a filter that prevents light coarse contaminants from entering the downstream storage. Even light materials are retained in the chamber with an immersion pipe. Depending on the amount of dirt, they must be cleaned regularly. The total water discharged from roof is filtered and supplied to the tank. In Germany the chambers are designed in accordance with ATV DVWK-M153, corresponding to the expected amount of dirt and connected roof area.