电流对DF-BER反硝化和有机物转化的影响

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Abstract The denitrification filter coupled biofilm-electrode reactor (DF-BER) was employed to realize the biological deep nitrogen removal process. The effects of different currents on the nitrogen removal performance of DF-BER and the types and concentration of effluent organic matter were systematically investigated under conditions of different influent water quality. The results indicated that DF-BER strengthened the denitrification effect of the system via degrading the original refractory organic matter in the actual sewage. When the current was 5mA, the system denitrification rate increased by 14.7% compared with that of the simulated sewage as the influent. With the increase of the applied current, the nitrogen removal performance of DF-BER was significantly enhanced, and the content of the tryptophan aromatic protein in actual sewage effluent was greatly reduced. In the meantime, microbial metabolites and humic acid accumulation appeared in effluent from both actual sewage and simulated sewage.

Key words： denitrification filter coupled biofilm-electrode reactor three-dimensional electrode current intensity autotrophic denitrification actual sewage

Received: 16 December 2019

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X703

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	Articles by authors
	SONG Ya-nan
	LU Yuan
	LU Yong-ze
	Hassan M
	ZHU Guang-can

Cite this article:

SONG Ya-nan,LU Yuan,LU Yong-ze等. Denitrification and organic matter conversion in DF-BER system[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(7): 2880-2887.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I7/2880

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