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- W2487843886 abstract "Research Article| March 01 2004 Sand filtration in a water treatment plant: biological parameters responsible for clogging L. Mauclaire; L. Mauclaire 1Soil Biology, Institute of Terrestrial Ecology, Swiss Federal Institute of Technology (ETH), Grabenstrasse 3, CH-8952 Schlieren, Switzerland2Present address: Geological Institute, Swiss Federal Institute of Technology (ETH), Sonneggstrasse 5, CH-8092 Zurich, Switzerland Search for other works by this author on: This Site PubMed Google Scholar A. Schürmann; A. Schürmann 2Present address: Geological Institute, Swiss Federal Institute of Technology (ETH), Sonneggstrasse 5, CH-8092 Zurich, Switzerland3Present address: Official Food Control Authority of the Canton of Zurich, Fehrenstrasse 15, PO Box, CH-8030 Zurich, Switzerland E-mail: Andreas.Schuermann@klzh.ch Search for other works by this author on: This Site PubMed Google Scholar M. Thullner; M. Thullner 1Soil Biology, Institute of Terrestrial Ecology, Swiss Federal Institute of Technology (ETH), Grabenstrasse 3, CH-8952 Schlieren, Switzerland4Present address: Department of Earth Science-Geochemistry, Utrecht University, P.O. Box 80021, NL-3508 TA Utrecht, The Netherlands Search for other works by this author on: This Site PubMed Google Scholar J. Zeyer; J. Zeyer 1Soil Biology, Institute of Terrestrial Ecology, Swiss Federal Institute of Technology (ETH), Grabenstrasse 3, CH-8952 Schlieren, Switzerland Search for other works by this author on: This Site PubMed Google Scholar S. Gammeter S. Gammeter 5Zurich Water Supply, Hardhof 9, PO Box, CH-8023 Zurich, Switzerland Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2004) 53 (2): 93–108. https://doi.org/10.2166/aqua.2004.0009 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Twitter LinkedIn Tools Icon Tools Cite Icon Cite Permissions Search Site Search nav search search input Search input auto suggest search filter All ContentAll JournalsThis Journal Search Advanced Search Citation L. Mauclaire, A. Schürmann, M. Thullner, J. Zeyer, S. Gammeter; Sand filtration in a water treatment plant: biological parameters responsible for clogging. Journal of Water Supply: Research and Technology-Aqua 1 March 2004; 53 (2): 93–108. doi: https://doi.org/10.2166/aqua.2004.0009 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Slow sand filtration is an established technique for the treatment of drinking water. However, clogging of these filters requires extensive maintenance. The clogging and hydraulic characteristics of slow sand filters operated under high flow rates were investigated in a drinking water plant that processes pre-treated lake water. Reasons for the clogging were evaluated by measuring physical, chemical and biological parameters of the interstitial water and the filter matrix. The biomass in the filters was characterised by quantifying bacterial abundance and activity as well as the concentration of extracellular polymeric substances (EPS). The results of this study showed that the clogging effects were to a large extent attributed to the presence of EPS. This microbial biomass reduced the pore space in the highly clogged parts of the filters by at least 7%, whereas the reduction due to particle deposition was not larger than 7%. Although the most severe clogging occurred in the top 5–10 cm of the filters where bacterial abundance and activity were highest, deeper layers of the filters were clogged, too. bioclogging, extracellular polymeric substances (EPS), hydraulic conductivity, pore space, sand filtration, water treatment This content is only available as a PDF. © IWA Publishing 2004 You do not currently have access to this content." @default.
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