Translations:Versickerung und Retention/132/en
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According to DIN 4261-1, version 2002, the water discharged from SWWTPs can be infiltrated through trenches in soils with kf = 5 x 10-7 to 5 x 10-3 m/s. As the base of infiltration system can clog up with time, only the side areas remain effective in the long run. A large retention volume is an advantage for variable infiltration efficiency i.e. during frost or uneven loading of the trench. The following simplified dimensioning methods shall apply according to DIN:
