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ID 41297
file
creator
Awata, Takanori
Goto, Yumiko
subject
Anammox
membrane bioreactor
low temperature
NDC
Construction. Civil engineering
abstract
Membrane bioreactors (MBRs) have the ability to completely retain biomass and are thus suitable for slowly growing anammox bacteria. In the present study, an anammox MBR was operated to investigate whether the anammox activity would remain stable at low temperature, without anammox biomass washout. The maximum nitrogen removal rates were 6.7 and 1.1 g-N L−1 day−1 at 35 and 15°C, respectively. Fluorescence in situ hybridization and 16S rRNA-based phylogenetic analysis revealed no change in the predominant anammox species with temperature because of the complete retention of anammox biomass in the MBR. These results indicate that the predominant anammox bacteria in the MBR cannot adapt to a low temperature during short-term operation. Conversely, anammox activity recovered rapidly after restoring the temperature from the lower value to the optimal temperature (35°C). The rapid recovery of anammox activity is a distinct advantage of using an MBR anammox reactor.
description
This research was partially supported by a Grant-in-Aid for Scientific Research (C) from the Ministry of Education, Culture, Sports, Science and Technology by the Japan Society for the Promotion of Science (JSPS).
journal title
Water Science and Technology
volume
Volume 72
issue
Issue 12
start page
2148
end page
2153
date of issued
2015-12
publisher
IWA Publishing
issn
0273-1223
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
rights
Copyright (c) IWA Publishing 2015
relation is version of URL
http://doi.org/10.2166/wst.2015.436
department
Graduate School of Engineering



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