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核心技术专利：CN118964589B侵权必究
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低 COD/N 比废水膜生物反应器硝化效能及微生物群落分析。

Analysis of nitrification efficiency and microbial community in a membrane bioreactor fed with low COD/N-ratio wastewater.

机构信息

State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai, PR China.

出版信息

PLoS One. 2013 May 7;8(5):e63059. doi: 10.1371/journal.pone.0063059. Print 2013.

DOI:10.1371/journal.pone.0063059
PMID:23667573
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3646889/
Abstract

In this study, an approach using influent COD/N ratio reduction was employed to improve process performance and nitrification efficiency in a membrane bioreactor (MBR). Besides sludge reduction, membrane fouling alleviation was observed during 330 d operation, which was attributed to the decreased production of soluble microbial products (SMP) and efficient carbon metabolism in the autotrophic nitrifying community. 454 high-throughput 16S rRNA gene pyrosequencing revealed that the diversity of microbial sequences was mainly determined by the feed characteristics, and that microbes could derive energy by switching to a more autotrophic metabolism to resist the environmental stress. The enrichment of nitrifiers in an MBR with a low COD/N-ratio demonstrated that this condition stimulated nitrification, and that the community distribution of ammonia oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) resulted in faster nitrite uptake rates. Further, ammonia oxidation was the rate-limiting step during the full nitrification.

摘要

在这项研究中，采用了一种通过降低进水 COD/N 比的方法来提高膜生物反应器（MBR）的处理性能和硝化效率。在 330 天的运行过程中，除了污泥减少外，还观察到膜污染得到缓解，这归因于可溶解性微生物产物（SMP）的减少和自养硝化群落中有效的碳代谢。454 高通量 16S rRNA 基因焦磷酸测序表明，微生物序列的多样性主要由进料特性决定，微生物可以通过转向更自养的代谢来获得能量，以抵抗环境压力。在 COD/N 比较低的 MBR 中硝化菌的富集表明，这种条件刺激了硝化作用，氨氧化菌（AOB）和亚硝酸盐氧化菌（NOB）的群落分布导致更快的亚硝酸盐摄取率。此外，氨氧化是完全硝化过程中的限速步骤。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e5e/3646889/8326a5de517c/pone.0063059.g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e5e/3646889/4deb7bf66463/pone.0063059.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e5e/3646889/0792194ab41e/pone.0063059.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e5e/3646889/b16234b090a9/pone.0063059.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e5e/3646889/838776c06826/pone.0063059.g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e5e/3646889/8326a5de517c/pone.0063059.g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e5e/3646889/4deb7bf66463/pone.0063059.g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e5e/3646889/0792194ab41e/pone.0063059.g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e5e/3646889/b16234b090a9/pone.0063059.g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e5e/3646889/838776c06826/pone.0063059.g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7e5e/3646889/8326a5de517c/pone.0063059.g005.jpg

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Analysis of nitrification efficiency and microbial community in a membrane bioreactor fed with low COD/N-ratio wastewater.

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Biodegradation. 2025-3-6

[2]
Effect of Increasing C/N Ratio on Performance and Microbial Community Structure in a Membrane Bioreactor with a High Ammonia Load.

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[3]
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[4]
Sustained organic loading disturbance favors nitrite accumulation in bioreactors with variable resistance, recovery and resilience of nitrification and nitrifiers.

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[5]
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[6]
Membrane bioreactors fed with different COD/N ratio wastewater: impacts on microbial community, microbial products, and membrane fouling.

Environ Sci Pollut Res Int. 2015-3-28

本文引用的文献

[1]
Correlating microbial community structure and composition with aeration intensity in submerged membrane bioreactors by 454 high-throughput pyrosequencing.

Water Res. 2012-11-17

[2]
Pyrosequencing reveals highly diverse microbial communities in microbial electrolysis cells involved in enhanced H2 production from waste activated sludge.

Water Res. 2012-2-11

[3]
Effect of different operational conditions on biofilm development, nitrification, and nitrifying microbial population in moving-bed biofilm reactors.

Environ Sci Technol. 2012-1-26

[4]
Performance of a submerged membrane bioreactor for the aerobic treatment of abattoir wastewater.

Bioresour Technol. 2011-9-20

[5]
Analysis of the bacterial community in a laboratory-scale nitrification reactor and a wastewater treatment plant by 454-pyrosequencing.

Water Res. 2011-5-31

[6]
Effect of sludge age on simultaneous nitrification and denitrification in membrane bioreactor.

Bioresour Technol. 2011-4-2

[7]
Comparison of partial and full nitrification processes applied for treating high-strength nitrogen wastewaters: microbial ecology through nitrous oxide production.

Environ Sci Technol. 2011-3-9

[8]
Planctomycetes dominate biofilms on surfaces of the kelp Laminaria hyperborea.

BMC Microbiol. 2010-10-15

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Influence of physicochemical and operational parameters on Nitrobacter and Nitrospira communities in an aerobic activated sludge bioreactor.

Water Res. 2010-6-9

[10]
Effect of organic carbon on ammonia oxidizing bacteria in a mixed culture.

Bioresour Technol. 2010-4-3

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