厌氧氨氧化耦合反硝化快速启动CANON工艺

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Abstract

In order to start up an CANON process to treat domestic wastewater, the simultaneous anaerobic ammonium oxidation and denitrification process (SAD) was started up firstly, then the ammonia-oxidizing bacteria (AOB) was enriched by Simulated domestic wastewater under low aeration. During the operation period, the variation of ammonia nitrogen (NH₄⁺-N) nitrite nitrogen (NO₂^--N) and nitrate nitrogen(NO₂^--N )and dynamics activities of functional microbes were investigated to elaborate main factors for the conversion of sludge characteristics in the start-up process of CANON. The results showed that the time of both partial nitrification process and the adaptation to organic environment of ANAMMOX bacteria were shortened. The CANON process was started up successfully after 60days.the ANR of CANON process exceeded 93%. Owing to the short cycle, the ratio of ananmmox bacteria dynamics activity with heterotrophic denitrification bacteria was always within reasonable limits (m_NH₄⁺-N/m_COD> 1.0).The pH of reactor was improved because of the degradation of COD by heterotrophic denitrification bacteria. In addition, the selective inhibition of NOB caused by both free ammonia (FA) during the aeration period was the other main factor for stable partial nitrification.

Key words： anaerobic ammonia oxidation CANON denitrifying partial nitrification domestic wastewater

Received: 15 August 2016

PACS:

X703.1

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	Articles by authors
	LI Dong
	YANG Qiao-yun
	ZENG Hui-ping
	ZHANG Jie

Cite this article:

LI Dong,YANG Qiao-yun,ZENG Hui-ping等. The startup of CANON process by starting up simultaneous anammox and denitrification process firstly[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(4): 1307-1314.

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http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2017/V37/I4/1307

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