globalchange  > 气候减缓与适应
DOI: 10.1016/j.watres.2018.08.066
Scopus ID: 2-s2.0-85053811071
The more important role of archaea than bacteria in nitrification of wastewater treatment plants in cold season despite their numerical relationships
Author: Pan K.-L.; Gao J.-F.; Fan X.-Y.; Li D.-C.; Dai H.-H.
Source Publication: Water Research
ISSN: 431354
Publishing Year: 2018
Volume: 145
pages begin: 552
pages end: 561
Language: 英语
Keyword: Ammonia-oxidizing archaea ; Ammonia-oxidizing bacteria ; Complete ammonia-oxidizing nitrospira ; DNA-based stable isotope probing ; Numerical relationships ; Wastewater treatment plants
Scopus Keyword: Ammonia ; Bacteria ; DNA ; Gene encoding ; Isotopes ; Nitrification ; Reclamation ; Sewage pumping plants ; Water treatment plants ; Ammonia oxidizing bacteria ; Ammonia-oxidizing archaea ; Nitrospira ; Numerical relationships ; Stable-isotope probing ; Wastewater treatment plants ; Wastewater treatment ; Bacteria (microorganisms) ; Nitrosomonadales ; Nitrosomonas europaea ; Nitrosomonas oligotropha ; Nitrospira
English Abstract: Nitrification failure of wastewater treatment plants (WWTPs) in cold season calls into investigations of the functional ammonia-oxidizing microorganisms (AOMs). In this study, we report the abundance of ammonia-oxidizing archaea (AOA), bacteria (AOB) and complete ammonia-oxidizing (comammox) Nitrospira in 23 municipal WWTPs in cold season, and explore the correlations between AOMs abundance and their relative contribution to nitrification. The copy numbers of AOA and AOB amoA gene ranged from 2.42 × 107 to 2.47 × 109 and 5.54 × 106 to 3.31 × 109 copies/g sludge, respectively. The abundance of amoA gene of Candidatus Nitrospira inopinata, an important strain of comammox Nitrospira, was stable with averaged abundance of 8.47 × 106 copies/g sludge. DNA-based stable isotope probing (DNA-SIP) assays were conducted with three typical WWTPs in which the abundance of AOA was lower than, similar to and higher than that of AOB, respectively. The results showed that considerable 13C-assimilation by AOA was detected during active nitrification in all WWTPs, whereas just a much lesser extent of 13C-incorporation by AOB and comammox Nitrospira was found in one WWTP. High-throughput sequencing with 13C-labeled DNA also showed the higher reads abundance of AOA than AOB and comammox Nitrospira. Nitrososphaera viennensis was the dominant active AOA, while Nitrosomonas oligotropha and Nitrosomonas europaea were identified as active AOB. The results obtained suggest that AOA, rather than AOB and comammox Nitrospira, dominate ammonia oxidation in WWTPs in cold season despite the numerical relationships of AOMs. © 2018 Elsevier Ltd
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被引频次[WOS]:12   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Appears in Collections:气候减缓与适应

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Affiliation: National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, 100124, China

Recommended Citation:
Pan K.-L.,Gao J.-F.,Fan X.-Y.,et al. The more important role of archaea than bacteria in nitrification of wastewater treatment plants in cold season despite their numerical relationships[J]. Water Research,2018-01-01,145
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