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The role of inoculum and reactor configuration for microbial community composition and dynamics in mainstream partial nitritation anammox reactors

Agrawal, S. 1; Karst, S. M.; Gilbert, E. M. 1; Horn, H. 1; Nielsen, P. H.; Lackner, S. 1
1 Engler-Bunte-Institut (EBI), Karlsruher Institut für Technologie (KIT)

Abstract:

Implementation of partial nitritation anammox (PNA) in the mainstream (municipal wastewater treatment) is still under investigation. Microbial community structure and reactor type can influence the performance of PNA reactor; yet, little is known about the role of the community composition of the inoculum and the reactor configuration under mainstream conditions. Therefore, this study investigated the community structure of inocula of different origin and their consecutive community dynamics in four different lab-scale PNA reactors with 16S rRNA gene amplicon sequencing. These reactors were operated for almost 1 year and subjected to realistic seasonal temperature fluctuations as in moderate climate regions, that is, from 20°C in summer to 10°C in winter. The sequencing analysis revealed that the bacterial community in the reactors comprised: (1) a nitrifying community (consisting of anaerobic ammonium-oxidizing bacteria (AnAOB), ammonia-oxidizing bacteria (AOB), and nitrite-oxidizing bacteria (NOB)); (2) different heterotrophic denitrifying bacteria and other putative heterotrophic bacteria (HB). The nitrifying community was the same in all four reactors at the genus level, although the biomasses were of different origin. ... mehr


Volltext §
DOI: 10.5445/IR/1000068855
Originalveröffentlichung
DOI: 10.1002/mbo3.456
Scopus
Zitationen: 36
Web of Science
Zitationen: 33
Dimensions
Zitationen: 35
Cover der Publikation
Zugehörige Institution(en) am KIT Engler-Bunte-Institut (EBI)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 2045-8827
urn:nbn:de:swb:90-688554
KITopen-ID: 1000068855
Erschienen in MicrobiologyOpen
Verlag Wiley Open Access
Band 6
Heft 4
Seiten Art. Nr. e00456
Schlagwörter biofilm, bioreactors, Molecular microbial ecology, Nitrogen metabolism
Nachgewiesen in PubMed
Dimensions
Scopus
Web of Science
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