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Water 2018, 10(9), 1240; https://doi.org/10.3390/w10091240

Potential Impacts of Induced Bank Filtration on Surface Water Quality: A Conceptual Framework for Future Research

1
Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 301 and 310, 12587 Berlin, Germany
2
Institute of Biology and Environmental Sciences, School of Mathematics and Science, Carl von Ossietzky Universität Oldenburg, Uhlhornsweg 84, 26111 Oldenburg, Germany
3
Geography Department, Faculty of Mathematics and Natural Sciences, Humboldt University Berlin, Unter den Linden 6, 10099 Berlin, Germany
*
Authors to whom correspondence should be addressed.
Received: 13 July 2018 / Revised: 4 September 2018 / Accepted: 8 September 2018 / Published: 13 September 2018
(This article belongs to the Section Water Quality and Ecosystems)
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Abstract

Studies on induced bank filtration (IBF), a cost-effective and reliable drinking water production method, usually focus on processes affecting the target drinking water quality. We aim to expand this view by assessing potential impacts of IBF on surface water quality. We suggest that IBF can directly and indirectly affect several physical, chemical and biological processes in both the sediment and open water column, eventually leading to positive or negative changes in source water quality. Direct effects of IBF comprise water level fluctuations, changes in water level and retention time, and in organic content and redox conditions in littoral sediments. Indirect effects are mainly triggered by interrupting groundwater discharge into the surface water body. The latter may result in increased seasonal temperature variations in sediment and water and reduced discharge of solutes transported by groundwater such as nutrients and carbon dioxide. These changes can have cascading effects on various water quality, e.g., by facilitating toxic phytoplankton blooms. We propose investigating these potential effects of IBF in future field and laboratory studies to allow for more detailed insights into these yet unknown effects and their magnitude in order to assure a sustainable application of this valuable technique in the future. View Full-Text
Keywords: drinking water; groundwater; macrophytes; lake; river; sediment; surface water-groundwater interaction drinking water; groundwater; macrophytes; lake; river; sediment; surface water-groundwater interaction
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Gillefalk, M.; Massmann, G.; Nützmann, G.; Hilt, S. Potential Impacts of Induced Bank Filtration on Surface Water Quality: A Conceptual Framework for Future Research. Water 2018, 10, 1240.

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