AFMBR处理低浓度废水的运行特性

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Abstract Anaerobic fluidized bed membrane bioreactor (AFMBR) with simulated domestic wastewater was studied at room temperature. With the influent COD of 270mg/L, AFMBR system operated through acclimation and enrichment. The effluent SCOD could remain stable under 30mg/L. With the decrease of temperature in winter, the effluent SCOD was between 30and 40mg/L as the activity of anaerobic transformation, such as methanogenic bacteria, in the system might be inhibited, but the level A Emission Standard could still be meet. The total methane conversion amount was about 0.182L/g CODR, about 45% of the influent COD conversion to methane. The sludge production of the AFMBR system for 218days operation continuously was 0.071g VSS/g COD, which was much lower than the typical aerobic one. As for the net energy output of the system, if the gaseous methane production was only considered, the energy demand for mechanic power could be met when the HRT was reduced to 10h; if all the methane production was taken into account, the energy demand could be met when the HRT was reduced to 20h. When the HRT was reduced to 10h, the energy output was twice over the energy demand. Thus, the AFMBR system had great potential as an energy positive wastewater treatment system.

Key words： anaerobic fluidized bed membrane bioreactor GAC dilute wastewater biosolids production energy consumption

Received: 05 June 2017

PACS:

X703.1

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	Articles by authors
	ZHANG Bo-kang
	ZHANG Yan
	CHEN Chang-ming
	MA Xiang-shan
	XING Jin-liang
	GUO Wei
	LIU Zi-qi

Cite this article:

ZHANG Bo-kang,ZHANG Yan,CHEN Chang-ming等. Characteristics of anaerobic fluidized bed membrane bioreactor for dilute wastewater Treatment[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(1): 129-135.

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http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2018/V38/I1/129

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