muldenabschnitt (1) an opening surface in versickerungsmulde, with two side walls (2) and a floor (4)with the muldenabschnitt (1) versickerungsu00f6ffnungen (3) for the water are provided.and with the interior of the muldenabschnitts (1) a space for reception of a substrate for biological treatment of water creates, characterizedin the middle area of the interior of a separate reservespeicher (5) as a space for reception of a substrate is arrangedwith the reservespeicher (5) of an upper zulaufu00f6ffnung (10) in a ablaufu00f6ffnung, deeper than the zulaufu00f6ffnung (10) is arranged.and with the reservespeicher (5), (6) has a surrounding wall.
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