基于不同污泥量间歇饥饿的CANON工艺启动

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Abstract In order to explore the influence of intermittent starvation of different amounts of sludge on the start of CANON process, the R1, R2 and R3 reactors used three different methods to start CANON process by hydraulic screening intermittent starvation, partial sludge intermittent starvation and all sludge intermittent starvation. The experimental results showed that the R1, R2, and R3 reactors were successfully started on the 44, 66, and 58d, respectively. On the 70th day, the total nitrogen removal rate reached 73.63%, 71.56%, and 67.40%, and the particle size reached 404, 359 and 306μm, respectively. Analysis showed that the hydraulic screening intermittent starvation method could selectively starve the flocculent sludge, avoid the negative impact of intermittent starvation on the EPS and particle size of the sludge, and can effectively inhibit the activity of NOB bacteria while easily maintaining the activity of related functional bacteria. The intermittent starvation method of some sludge avoided the attenuation of AOB and ANAMMOX activity to a certain extent, but at the same time the inhibition effect of NOB was also poor; the overall intermittent starvation strategy had the best inhibitory effect on NOB, but it was also not conducive to the CANON process. The activity of related functional bacteria was maintained.

Key words： completely autotrophic nitrogen removal over nitrite(CANON) intermittent hunger hydraulic screening anaerobic ammonium oxidizing(ANAMMOX) nitrite-oxidizing bacteria(NOB)

Received: 26 January 2021

PACS:

X703.1

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	LI Dong
	LIU Ming-yang
	REN Ji-yuan
	ZHANG Jie
	ZENG Hui-ping

Cite this article:

LI Dong,LIU Ming-yang,REN Ji-yuan等. Research on CANON process startup based on intermittent starvation of different sludge amount[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(8): 3607-3614.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I8/3607

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