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Article

Technology for Upgrading the Tailwater of Municipal Sewage Treatment Plants: The Efficacy and Mechanism of Microbial Coupling for Nitrogen and Carbon Removal

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School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
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Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Fish Health and Nutrition of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou 313001, China
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Authors to whom correspondence should be addressed.
Academic Editor: Alejandro Gonzalez-Martinez
Water 2021, 13(20), 2850; https://doi.org/10.3390/w13202850
Received: 14 August 2021 / Revised: 3 October 2021 / Accepted: 10 October 2021 / Published: 13 October 2021
(This article belongs to the Section Wastewater Treatment and Reuse)
The efficient removal of carbon (COD) and nitrogen (NH3-N) is vital to improving tailwater from municipal wastewater treatment plants. In this study, denitrification and decarburization bacteria with stable removal efficiencies were introduced into a membrane bioreactor (MBR) for 45 days of field experiments in a QJ Wastewater Treatment Plant (Hangzhou, China) to enhance carbon and nitrogen removal. After adding the decarbonization microorganisms into the denitrification reactor, COD removal increased from 31.2% to 80.2%, while compared to the same MBR with only denitrification microorganisms, the removal efficiency of NH3-N was greatly increased from 76.8% to 98.6%. The results of microbial analysis showed that the cooccurrence of Proteobacteria and Bacillus with high abundance and diverse bacteria, such as Chloroflexi, with autotrophic decarburization functions might account for the synchronous high removal efficiency for NH3-N and COD. This technology could provide a reference for industrial-scale wastewater treatment with the goal of simultaneous nitrogen and carbon removal. View Full-Text
Keywords: denitrification; decarburization; bioaugmentation; sync removal denitrification; decarburization; bioaugmentation; sync removal
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MDPI and ACS Style

Zhang, Y.; Lu, S.; Fang, Y.; Yang, K.; Ding, J.; Ye, X.; Zhang, H. Technology for Upgrading the Tailwater of Municipal Sewage Treatment Plants: The Efficacy and Mechanism of Microbial Coupling for Nitrogen and Carbon Removal. Water 2021, 13, 2850. https://doi.org/10.3390/w13202850

AMA Style

Zhang Y, Lu S, Fang Y, Yang K, Ding J, Ye X, Zhang H. Technology for Upgrading the Tailwater of Municipal Sewage Treatment Plants: The Efficacy and Mechanism of Microbial Coupling for Nitrogen and Carbon Removal. Water. 2021; 13(20):2850. https://doi.org/10.3390/w13202850

Chicago/Turabian Style

Zhang, Yinan, Shihuan Lu, Yuxin Fang, Kexin Yang, Jiafeng Ding, Xueping Ye, and Hangjun Zhang. 2021. "Technology for Upgrading the Tailwater of Municipal Sewage Treatment Plants: The Efficacy and Mechanism of Microbial Coupling for Nitrogen and Carbon Removal" Water 13, no. 20: 2850. https://doi.org/10.3390/w13202850

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