Hydrodynamische und hydrochemische Aspekte der anthropogen und natürlich induzierten Uferfiltration am Beispiel von Berlin/Brandenburg |
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Authors: | Dr habil G Massmann Prof Dr A Pekdeger Dr U Dünnbier Dr habil T Heberer Dr D Richter Dr J Sültenfuß Dr Y Tosaki |
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Affiliation: | 1. Arbeitsbereich Hydrogeologie, Freie Universit?t Berlin, Institut für Geologische Wissenschaften, Malteserstr. 74–100, 12249, Berlin, Deutschland 2. Labor, Berliner Wasserbetriebe, Postfach 310180, 10631, Berlin, Deutschland 3. Lebensmittelinstitut Oldenburg, Nieders?chsisches Landesamt für Verbraucherschutz und Lebensmittelsicherheit (LAVES), Martin-Niem?ller-Str. 2, 26133, Oldenburg, Deutschland 4. DVGW – Technologiezentrum Wasser (TZW), Karlsruher Str. 84, 76139, Karlsruhe, Deutschland 5. Institut für Umweltphysik, AG Ozeanographie, Universit?t Bremen, Otto-Hahn-Allee, 28359, Bremen, Deutschland 6. Sustainable Environmental Studies, Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
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Abstract: | Bank filtration is the natural or anthropogenically induced process of surface water infiltration into an aquifer. It is of particular importance as a method to gain or pre-treat water for drinking water production. The hydrodynamic and hydrochemical processes during bank filtration were investigated at one rural site in the Oderbruch and at two urban sites in Berlin (Germany). Results show that these sites differ substantially with regard to the characteristics of the hyporheic zone (permeable versus clogged), travel times (decades versus months to decades) and shape of the redox zones (horizontal versus vertical redox succession). The hyporheic zone is a key parameter determining the site characteristics. Since the surface water in Berlin contains a proportion of treated sewage, a number of wastewater-bound substances (e.?g. pharmaceutical residues) have been detected in the surface water. Most of them were, however, fully or partly removed during bank filtration. The redox conditions are an important key parameter with regard to the elimination (or persistence) of a number of organic trace compounds (e.?g. phenazone, sulfamethoxazole, clindamycin), whose elimination depends on the prevailing redox environment. |
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