A<sup>2</sup>/O+MBR工艺运行效果与碳排放特征研究

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Abstract The operation effect and carbon emission characteristics of the A²/O+MBR process in the H reclaimed water plant of Tongzhou District, Beijing, were studied in this paper. The results showed that the average removal rates of BOD₅, COD_cr, NH₄⁺-N, TN and TP were 97.3%, 94.1%, 98.6%, 77.0% and 96.2% respectively. The total carbon emission and carbon emission per ton of water of the H reclaimed water plant decreased gradually in spring and summer and increased slowly in autumn and winter, the total carbon emission per ton of water was about 2.26kgCO₂e/t. In the total carbon emissions, energy consumption carbon emissions accounted for the leading position, while CH₄, N₂O carbon emissions, and drug consumption carbon emissions accounted for a relatively small proportion. The statistical analysis results showed that the carbon emissions of CH₄ ton water, energy consumption ton water, and material consumption ton water were significantly correlated with BOD₅, TN influent concentration, and BOD₅ removal rate. The carbon emission of N₂O per ton of water was significantly correlated with the influent concentrations of TN and BOD₅. There is no significant correlation between direct and indirect carbon emissions per ton of water and water quantity.

Key words： wastewater treatment A²/O+MBR process operation effect carbon emissions

Received: 14 February 2021

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X703

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	HU Yong-feng
	LIANG Mei
	ZHANG Yong-xiang
	WANG Kun

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HU Yong-feng,LIANG Mei,ZHANG Yong-xiang等. Study on operation efficiency and carbon emission characteristics of A²/O + MBR process[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(9): 4439-4446.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I9/4439

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