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240911s2024 xx |||||o 00| ||eng c |
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|a 10.1080/09593330.2024.2401645
|2 doi
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|a pubmed24n1530.xml
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|a (DE-627)NLM377458821
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|a (NLM)39258836
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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 |
1 |
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|a Wang, Wenxiao
|e verfasserin
|4 aut
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| 245 |
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|a Rapid achievement of partial nitrification process by adopting the combined strategy of anoxic starvation and free ammonia inhibition
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 11.09.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a Partial nitrification (PN) is a prerequisite step for the short-cut nitrogen removal process, which is crucial to provide stable nitrite accumulation for subsequent units. The present study innovatively proposed a new strategy for the rapid establishment of PN by adopting short-term anoxic starvation combined with high free ammonia inhibition. The sludge obtained from the secondary sedimentation tank of a municipal wastewater treatment plant was starved for 7 days under anoxic conditions, and then wastewater with high ammonia nitrogen (400 mg L-1) was introduced. Within 17 days, stable nitrite accumulation was achieved in the sequencing batch reactor, and the nitrite accumulation rate reached more than 95.0%. The activity of ammonia monooxygenase enzyme increased from 0.0364 ± 0.0074 to 0.1275 ± 0.0021 μg NO2--N·mg-1 protein min-1, while that of hydroxylamine oxidoreductase enzyme increased from 1.5350 ± 0.0208 to 6.3852 ± 0.0400 EU g-1 SS. The relative abundance of Nitrosomonas increased from 0.10% to 25.90%, while that of Nitrospira consistently remained below 0.04%. And the relative abundance of short-cut denitrifying bacteria, including Truepera, OLB8, and OLB13 all increased. The results proved that the short-term anoxic starvation combined with high free ammonia inhibition was an effective strategy for rapid establishment of PN
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|a Journal Article
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|a Nitrite accumulation
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|a ammonia-oxidizing bacteria
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4 |
|a anoxic starvation
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|a free ammonia
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| 650 |
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4 |
|a shortcut nitrogen removal
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1 |
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|a Zhang, Xiaojing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ma, Bingbing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Han
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Qiong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Song, Yali
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ma, Yongpeng
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Environmental technology
|d 1993
|g (2024) vom: 11. Sept., Seite 1-12
|w (DE-627)NLM098202545
|x 1479-487X
|7 nnns
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| 773 |
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|g year:2024
|g day:11
|g month:09
|g pages:1-12
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|u http://dx.doi.org/10.1080/09593330.2024.2401645
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