RESEARCH ADVANCES IN BIOLOGICAL DENITRIFICATION TECHNOLOGY DRIVEN BY EXOGENOUS ELECTRON DONORS

PAN Yuan; SUN Ruizhe; YU Hanqing

doi:10.13205/j.hjgc.202409001

Volume 42 Issue 9

Sep. 2024

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PAN Yuan, SUN Ruizhe, YU Hanqing. RESEARCH ADVANCES IN BIOLOGICAL DENITRIFICATION TECHNOLOGY DRIVEN BY EXOGENOUS ELECTRON DONORS[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(9): 1-12. doi: 10.13205/j.hjgc.202409001

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PAN Yuan, SUN Ruizhe, YU Hanqing. RESEARCH ADVANCES IN BIOLOGICAL DENITRIFICATION TECHNOLOGY DRIVEN BY EXOGENOUS ELECTRON DONORS[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(9): 1-12. doi: 10.13205/j.hjgc.202409001

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RESEARCH ADVANCES IN BIOLOGICAL DENITRIFICATION TECHNOLOGY DRIVEN BY EXOGENOUS ELECTRON DONORS

doi: 10.13205/j.hjgc.202409001

PAN Yuan^1,2,
SUN Ruizhe²,
YU Hanqing^{2
,
,}

1. Anhui Municipal Sludge Disposal and Resource Utilization Engineering Technology Center, Hefei 230026, China;
2. CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China

Received Date: 2024-08-09
Available Online: 2024-12-02

Abstract

Abstract

Biological denitrification is a key method for removing nitrogen through wastewater treatment. However, traditional biological denitrification processes are often constrained by insufficient supply of electron donors in wastewater, necessitating the use of exogenous electron donors. This review summarizes the microbial mechanisms and the application progress of various types of exogenous electron donors in the biological denitrification process. It focuses on the characteristics of microbial communities and enhancement mechanisms in different nutritional-type denitrification systems. Based on an analysis of different strategies for electron donor applications, this review discusses the potential of mixed nutritional-type denitrification systems, which combine the advantages of heterotrophic and autotrophic denitrification, and enhance theirown stability and treatment efficiency. Finally, the review anticipates future research directions for the denitrification electron donors, exploring new strategies to optimize the denitrification process through comprehensive regulation of electron donor types and supply methods. That can provide important references for addressing the issue of insufficient electron donors in biological denitrification technology.
- biological nitrogen removal,
- low carbon/nitrogen ratio wastewater,
- exogenous electron donors,
- mixotrophic denitrification

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References(89)

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