Nitrogen removal using an anammox membrane bioreactor at low temperature
Water Science and Technology Volume 72 Issue 12
Page 2148-2153
published_at 2015-12
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| File | |
| Title ( eng ) |
Nitrogen removal using an anammox membrane bioreactor at low temperature
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| Creator |
Awata Takanori
Goto Yumiko
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| Source Title |
Water Science and Technology
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| Volume | 72 |
| Issue | 12 |
| Start Page | 2148 |
| End Page | 2153 |
| 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.
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| Keywords |
Anammox
membrane bioreactor
low temperature
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| Descriptions |
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).
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| NDC |
Construction. Civil engineering [ 510 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
IWA Publishing
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| Date of Issued | 2015-12 |
| Rights |
Copyright (c) IWA Publishing 2015
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| Publish Type | Author’s Original |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0273-1223
[DOI] 10.2166/wst.2015.436
[DOI] http://doi.org/10.2166/wst.2015.436
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