Combination of upflow anaerobic sludge blanket (UASB) reactor and partial nitritation/anammox moving bed biofilm reactor (MBBR) for municipal wastewater treatment
2015 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 180, 144-153 p.Article in journal (Refereed) Published
In this study the combination of an upflow anaerobic sludge blanket (UASB) reactor and a deammonification moving bed biofilm reactor (MBBR) for mainstream wastewater treatment was tested. The competition between aerobic ammonium oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) was studied during a 5 months period of transition from reject water to mainstream wastewater followed by a 16 months period of mainstream wastewater treatment. The decrease of influent ammonium concentration led to a wash-out of suspended biomass which had a major contribution to nitrite production. Influence of a dissolved oxygen concentration and a transient anoxia mechanism of NOB suppression were studied. It was shown that anoxic phase duration has no effect on NOB metabolism recovery and oxygen diffusion rather than affinities of AOB and NOB to oxygen determine the rate of nitrogen conversion in a biofilm system. Anammox activity remained on the level comparable to reject water treatment systems.
Place, publisher, year, edition, pages
2015. Vol. 180, 144-153 p.
Anammox, Mainstream deammonification, AOB, NOB, MBBR
IdentifiersURN: urn:nbn:se:kth:diva-161949DOI: 10.1016/j.biortech.2014.12.101ISI: 000349715700020PubMedID: 25600011ScopusID: 2-s2.0-84921419582OAI: oai:DiVA.org:kth-161949DiVA: diva2:801035
QC 201504082015-04-082015-03-202015-04-08Bibliographically approved