In the production of drinking water from groundwater, iron removal in filters may interfere with nitrification. Microbial nitrification might decline because of irreversible accumulation of iron deposits in pores and on filter material. This paper shows the successful application of two experimental techniques applied at a full-scale water treatment plant in the Netherlands to maintain sustainable nitrification. Filter performances were evaluated by measurements of ammonium in the filter effluent, accumulation of deposits and their removal during backwash, development of the mainly inorganic filter coating and media expansion curves. The application of dual-media drinking water trickling filters, in combination with filter backwash with media expansion, minimizes the irreversible accumulation of iron deposits in the filter. Subsurface aeration results in a lower iron content of the filter coating.
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June 2009
This article was originally published in
Journal of Water Supply: Research and Technology-Aqua
Article Contents
Research Article|
June 01 2009
Influence of iron on nitrification in full-scale drinking water trickling filters
W. W. J. M. de Vet;
1Oasen Drinking Water Company, Post Box 122, Gouda 2800 AC, The Netherlands
2Department of Biotechnology, Delft University of Technology, Julianalaan 67, Delft 2628 BC, The Netherlands
Tel.: +31 610 927 947 Fax: +31 152 782 355; E-mail: [email protected]
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L. C. Rietveld;
L. C. Rietveld
3Department of Water Management, Delft University of Technology, Stevinweg 1, Delft 2628 CN, The Netherlands
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M. C. M. van Loosdrecht
M. C. M. van Loosdrecht
2Department of Biotechnology, Delft University of Technology, Julianalaan 67, Delft 2628 BC, The Netherlands
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Journal of Water Supply: Research and Technology-Aqua (2009) 58 (4): 247–256.
Article history
Received:
October 30 2007
Accepted:
November 11 2008
Citation
W. W. J. M. de Vet, L. C. Rietveld, M. C. M. van Loosdrecht; Influence of iron on nitrification in full-scale drinking water trickling filters. Journal of Water Supply: Research and Technology-Aqua 1 June 2009; 58 (4): 247–256. doi: https://doi.org/10.2166/aqua.2009.115
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