Translations:Versickerung und Retention/26/en

Should contaminants penetrate into the trench despite pre-cleaning, it is very important that subsequent cleaning is possible. In many trenches e.g. box systems, only the flushing ducts can be cleaned afterwards. However fine contaminates pass through the slots in the flushing ducts and gradually clog the floors and walls of these trenches. Ultimately these can only be dug out completely if they have lost their infiltration capacity. With DRAINMAX Tunnel trenches for example, the critical walls and floors can be inspected with a camera through adequate connection chambers and are completely flushable. Contaminants either are retained in the coarse filter of the sedimentation and filter chamber or settle in the sedimentation area. The coarse filter can be removed and emptied after the flushing process. The parallel rows of trenches are additionally protected by the long settling section in the seepage pipe and the additional settling possibility in the inspection and flushing chamber. This guarantees a constant infiltration performance long-term.