曝气参数对短程硝化的影响及氮素等高线分析

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Abstract The intermittent aeration SBR process was used to treat actual domestic sewage. When the temperature was (26±0.5)℃ and the pH was (7.2±0.2), two different strategies of aeration intensity and density were used to achieve stable short-cut nitrification. The contour lines and profiles were used to explore ammonia nitrogen removal rate (ARE) and nitrite accumulation ratio (NiAR) in batch tests. The results showed that controlled aeration density and intensity at 12and 2L/(L·h), 67.10% ARE and 95% NiAR could be achieved. Controlled aeration intensity at 2L/(L·h), ARE reached 71.40%, 52.36% and 59.60% and NiAR increased to 98.94%, 96.72% and 98.20% respectively on the cycles of 40^th, 37^th and 22^th with the aeration densities of 6, 8 and 12. Contour analysis of batch test results showed that both aeration intensity and density had an impact on ARE and NiAR. When aeration strength and density were 2L/(L·h) and 15, ARE and NiAR were up to 77% and 99% respectively.

Key words： short-cut nitrification domestic sewage aeration intensity aeration density contour profile map

Received: 15 July 2020

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X703

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	Articles by authors
	YUAN Zhong-ling
	QIN Yan-rong
	ZHANG Min-an
	ZHANG Ming
	MAO Pei-yue
	AN Fang-jiao
	CHEN Yong-zhi

Cite this article:

YUAN Zhong-ling,QIN Yan-rong,ZHANG Min-an等. Influence of aeration parameters on the realization of stable short-cut nitrification and the analysis of nitrogen contour[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(2): 650-659.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I2/650

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