铁强化厌氧氨氧化脱氮机理研究进展

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Abstract How to promote the proliferation and metabolism of anammox bacteria, improve the nitrogen removal efficiency of anammox process, and ensure the long-term stable operation of the process are the hotspots of anammox research. Iron-assisted anammox is the most widely studied measure with high economical and practical potential. This paper briefly describes the iron-assisted anammox technology and its nitrogen removal performance. The mechanisms of iron-assisted anammox process in promoting anammox cells growth and enhancing systems nitrogen removal performance are summarized from the aspects of optimizing the habitats of anammox bacteria, stimulating the secretion of extracellular polymer, accelerating the accumulation of denitrification functional bacteria, inducing the evolution of cell microstructure, regulating the expression of key enzymes and functional genes, promoting signal molecular synthesis, and enhancing abiotic nitrogen removal. Finally, the iron-assisted anammox technology is summarized and prospected, and the concept of waste iron scrap-anammox process is proposed.

Key words： anaerobic ammonia oxidation iron enhanced nitrogen removal mechanism

Received: 10 April 2022

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X703

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	WANG Qian
	HU Jia-yuan
	LI Tian-hao
	WANG Cai-xia
	CHEN Jie
	SHEN Yao-liang
	LIU Wen-ru

Cite this article:

WANG Qian,HU Jia-yuan,LI Tian-hao等. Research progress on the mechanisms of iron-assisted anaerobic ammonia oxidation process[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(11): 5153-5162.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I11/5153

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