高氢分压下厌氧颗粒污泥演变过程研究

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Abstract To investigate the feasibility of in-situ/biological biogas upgrading (IBBU) in anaerobic wastewater treatment (AnWT) using anaerobic granular sludge (AGS), the evolution of AGS under high H₂ partial pressure and shear force was monitored with increasing influent COD load in the anaerobic sequencing batch reactor (ASBR), in terms of reactor performance and characteristics of AGS. The results showed that smaller but intact AGS was formed and exhibited high-rate performance when the influent COD load was below 5g/(L·d). Propionate degradation via H₂ interspecies transfer (HIT) mechanism was possibly enhanced in AGS. However, when the influent COD load was further increased over 6g/(L·d), uncontrollable propionate accumulation was observed. Therefore, it's necessary to find other techniques to reduce propionate accumulation under higher influent COD load in the future.

Key words： high H₂ partial pressure biological methods propionic acid accumulation biogas upgrading anaerobic granular sludge

Received: 12 April 2019

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X705

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	Articles by authors
	XU Heng
	XIA Yu
	WANG Jian-Bing
	HE Xu-Wen
	WANG Kai-Jun

Cite this article:

XU Heng,XIA Yu,WANG Jian-Bing等. Evolution of anaerobic granular sludge (AGS) under high H₂ partial pressure[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(11): 4638-4645.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I11/4638

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