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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/wer.1476
|2 doi
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|a pubmed24n1057.xml
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|a (DE-627)NLM317188186
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|a (NLM)33150637
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Yuan, Quan
|e verfasserin
|4 aut
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| 245 |
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|a Spontaneous mainstream anammox in a full-scale wastewater treatment plant with hybrid sludge retention time in a temperate zone of China
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 10.06.2021
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|a Date Revised 07.12.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2020 Water Environment Federation.
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|a Spontaneous anammox bacteria enrichment at mainstream conditions was reported in a full-scale Wastewater Treatment Plant (WWTP) in a temperate zone of China. The mainstream anammox was observed after WWTP process retrofit, which constructed a hybrid sludge retention time (SRT) system by providing moving carriers in the anaerobic/anoxic tank and was initially designed to enhance the denitrification process in a conventional anaerobic/anoxic/oxic process. The hybrid SRT system achieved 86.0 ± 4.6% total nitrogen (TN) removal via combined mainstream anammox and conventional denitrification. Autotrophic denitrification via mainstream anammox was confirmed by various shreds of evidence including high-throughput sequencing, specific anammox activity test, and 15 N isotopic tracing. Long-term anammox bacteria existence in the biofilm of the carrier in anoxic zones was detected in a much higher relative abundance compared with other spots. The contribution of anammox activity to TN removal was estimated at around 20%-30%. The reasons leading to spontaneous anammox enrichment were mainly attributed to the carriers for slow-growing bacteria growth and dissolved oxygen gradient in the anoxic tank (caused by intermittent aeration) for nitrite production. The insights of this full-scale case study provide important perspectives for future mainstream anammox application, and also the design of an energy-neutral WWTP process. PRACTITIONER POINTS: Spontaneous mainstream anammox in a full-scale WWTP after its retrofit in a temperate zone of China was reported. Anammox bacteria enrichment and long-term stability on moving carriers at mainstream conditions was achieved by modified hybrid SRT system. The hybrid SRT system achieve stable nitrogen removal even in cold winter and high BOD/N situation by combining mainstream anammox with conventional denitrification. Long term full-scale operation demonstrated excellent nitrogen removal with about 20%-30% contribution of mainstream anammox. This full-scale case study provided perspectives for future optimizing mainstream anammox application, and also energy-neutral WWTP process design
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|a Journal Article
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|a anammox
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|a full-scale WWTP
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|a hybrid SRT
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|a mainstream
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|a nitrogen removal
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|a Sewage
|2 NLM
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|a Waste Water
|2 NLM
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| 650 |
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|a Nitrogen
|2 NLM
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|a N762921K75
|2 NLM
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| 700 |
1 |
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|a Wang, Kaijun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a He, Beiping
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Ruidong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Qian, Liang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wan, Shuo
|e verfasserin
|4 aut
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| 700 |
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|a Zhou, Yaxu
|e verfasserin
|4 aut
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|a Cai, Hulin
|e verfasserin
|4 aut
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| 700 |
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|a Gong, Hui
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Water environment research : a research publication of the Water Environment Federation
|d 1998
|g 93(2021), 6 vom: 01. Juni, Seite 854-864
|w (DE-627)NLM098214292
|x 1554-7531
|7 nnns
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| 773 |
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|g volume:93
|g year:2021
|g number:6
|g day:01
|g month:06
|g pages:854-864
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|u http://dx.doi.org/10.1002/wer.1476
|3 Volltext
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