System for removing metals from roof runoff waters
Rain water from a roof drains through a down-pipe (11) containing a filter (2) which removes metal particles. The down-pipe has an outer jacket (3). The gap between the inner pipe and outer jacket has a metal ion-absorbing filter material (14) which is preceded by a pre-filter (22). The bottom end o...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | Rain water from a roof drains through a down-pipe (11) containing a filter (2) which removes metal particles. The down-pipe has an outer jacket (3). The gap between the inner pipe and outer jacket has a metal ion-absorbing filter material (14) which is preceded by a pre-filter (22). The bottom end of the filter (14) terminates in a funnel to the slotted walls of the inner pipe. |
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