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Impact of temperature on nitrification in biological activated carbon (BAC) filters used for drinking water treatment
École Polytechnique of Montréal, Canada.
École Polytechnique of Montréal, Canada.
Université Libre de Bruxelles, Belgium.
École Polytechnique of Montréal, Canada.
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2001 (English)In: Water Research, ISSN 0043-1354, E-ISSN 1879-2448, Vol. 35, no 12, 2923-2934 p.Article in journal (Refereed) Published
Abstract [en]

The impact of temperature on nitrification in biological granular activated carbon (GAC) filters was evaluated in order to improve the understanding of the nitrification process in drinking water treatment. The study was conducted in a northern climate where very cold water temperatures (below 2°C) prevail for extended periods and rapid shifts of temperature are frequent in the spring and fall. Ammonia removals were monitored and the fixed nitrifying biomass was measured using a method of potential nitrifying activity. The impact of temperature was evaluated on two different filter media: an opened superstructure wood-based activated carbon and a closed superstructure activated carbon-based on bituminous coal. The study was conducted at two levels: pilot scale (first-stage filters) and full-scale (second-stage filters) and the results indicate a strong temperature impact on nitrification activity. Ammonia removal capacities ranged from 40 to 90% in pilot filters, at temperatures above 10°C, while more than 90% ammonia was removed in the full-scale filters for the same temperature range. At moderate temperatures (4–10°C), the first stage pilot filters removed 10–40% of incoming ammonia for both media (opened and closed superstructure). In the full-scale filters, a difference between the two media in nitrification performances was observed at moderate temperatures: the ammonia removal rate in the opened superstructure support (more than 90%) was higher than in the closed superstructure support (45%). At low temperatures (below 4°C) both media performed poorly. Ammonia removal capacities were below 30% in both pilot- and full-scale filters.

Place, publisher, year, edition, pages
2001. Vol. 35, no 12, 2923-2934 p.
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:lnu:diva-43430DOI: 10.1016/S0043-1354(00)00579-0OAI: oai:DiVA.org:lnu-43430DiVA: diva2:814911
Available from: 2015-05-28 Created: 2015-05-28 Last updated: 2015-10-01Bibliographically approved

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CiteExportLink to record
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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
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