兼氧条件下厨余垃圾发酵液作碳源的反硝化性能

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Abstract The fermentation liquid of kitchen waste was used to adjust the ratio of carbon and nitrogen (C/N) in the denitrification system with facultative condition. Results showed that there was no accumulation of organic matter in the system, while the maximum accumulation concentration and efficiency of nitrite under high C/N conditions were higher than those of low C/N conditions. With the increase of C/N, the nitrogen removal rate and denitrification rate continued to increase. When C/N was 13, the denitrification rate achieved the maximum of 9.79mg/(gVSS·h), and the denitrification rate exceeded 95%. Besides, the denitrification rate and the maximum accumulation concentration of nitrite were directly proportional to influent nitrate concentration under the same C/N conditions. For facultative system, the removal of unit nitrogen required more organics, and the denitrification and nitrite reduction rate were lower than that of anaerobic system, although there was no COD residual occurring in the denitrification process.

Key words： kitchen waste fermentation liquid facultative denitrification carbon source

Received: 13 October 2020

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X705

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	Articles by authors
	ZHU Zi-han
	ZHOU Tao
	ZHAO You-cai
	YU Yi
	OUYANG Chuang
	CAO Rui-jie
	CHEN Shan-ping
	ZHANG Rui-na

Cite this article:

ZHU Zi-han,ZHOU Tao,ZHAO You-cai等. The use of kitchen waste fermentation liquid as carbon source for denitrification based on facultative treatment system[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(5): 2268-2274.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I5/2268

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