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Pilot scale studies on nitritation-anammox process for mainstream wastewater at low temperature
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering.
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering.
KTH, School of Architecture and the Built Environment (ABE), Sustainable development, Environmental science and Engineering. IVL Swedish Environmental Institute, Sweden.
2016 (English)In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 73, no 4, 761-768 p.Article in journal (Refereed) PublishedText
Abstract [en]

Process of partial nitritation-anammox for mainstream wastewater at low temperature was run in a pilot scale moving bed biofilm reactor (MBBR) system for about 300 days. The biofilm history in the reactor was about 3 years of growth at low temperature (down to 10 degrees C). The goal of the studies presented in this paper was to achieve effective partial nitritation-anammox process. Influence of nitrogen loading rate, hydraulic retention time, aeration strategy (continuous versus intermittent) and sludge recirculation (integrated fixed-film activated sludge (IFAS) mode) on deammonification process' efficiency and microbial activity in the examined system was tested. It was found that the sole intermittent aeration strategy is not a sufficient method for successful suppression of nitrite oxidizing bacteria in MBBR. The best performance of the process was achieved in IFAS mode. The highest recorded capacity of ammonia oxidizing bacteria and anammox bacteria in biofilm was 1.4 gN/m(2)d and 0.5 gN/m(2)d, respectively, reaching 51% in nitrogen removal efficiency.

Place, publisher, year, edition, pages
IWA Publishing, 2016. Vol. 73, no 4, 761-768 p.
Keyword [en]
anammox, deammonification, low temperature, mainstream wastewater, nitritation
National Category
Water Engineering
Identifiers
URN: urn:nbn:se:kth:diva-187853DOI: 10.2166/wst.2015.551ISI: 000374403500008PubMedID: 26901718ScopusID: 2-s2.0-84959374447OAI: oai:DiVA.org:kth-187853DiVA: diva2:931788
Note

QC 20160530

Available from: 2016-05-30 Created: 2016-05-30 Last updated: 2016-05-30Bibliographically approved

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