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Ammonia oxidizing bacterial community composition relates to process performance in wastewater treatment plants under low temperature conditions
Mälardalen University, School of Sustainable Development of Society and Technology. (MERO)
Swedish Univ Agr Sci.
Uppsala Univ.
Mälardalen University, School of Business, Society and Engineering. (MERO)ORCID iD: 0000-0001-5480-0167
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2012 (English)In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 65, no 2, p. 197-204Article in journal (Other academic) Published
Abstract [en]

Nitrification can be difficult to maintain at wastewater treatment plants (WWTPs) during cold periods resulting in disrupted nitrogen removal. The aim of this study was to relate nitrification process performance to abundance and composition of the ammonia oxidizer communities in two closely located municipal WWTPs in Sweden during an eight month period covering seasonal changes and low temperature conditions. Both facilities showed lower NH4+-N removal efficiency and nitrification rates as temperature decreased. However, one of the plants had a more stable nitrification rate and higher ammonia removal efficiency throughout the entire period. The differences in performance was related to a shift in the composition of the bacterial ammonia oxidizing community from a Nitrosomonas oligotropha-dominated community to a mixed community including also Nitrosomonas ureae-like ammonia oxidizers. This was likely a response to differences in NH4+-N and organic loading.

Place, publisher, year, edition, pages
2012. Vol. 65, no 2, p. 197-204
Keywords [en]
Activated sludge; Ammonia-oxidizing bacteria; Ammonia removal; Low temperature; Nitrification.
National Category
Engineering and Technology
Research subject
Energy- and Environmental Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-11883DOI: 10.2166/wst.2012.643ISI: 000299324000001PubMedID: 22233895Scopus ID: 2-s2.0-84856289582OAI: oai:DiVA.org:mdh-11883DiVA, id: diva2:400335
Available from: 2011-02-28 Created: 2011-02-25 Last updated: 2019-06-18Bibliographically approved

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Odlare, MonicaDahlquist, Erik

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Rodriguez Caballero, AdrianPåhlson, CarlOdlare, MonicaDahlquist, Erik
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Citation style
  • apa
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