中国科学院重庆绿色智能技术研究院机构知识库

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	Bioaugmentation with A. faecalis strain NR for achieving simultaneous nitrogen and organic carbon removal in a biofilm reactor
	Yang, Ji Xiang3; Zhao, Bin1,2; An, Qiang1,2; Huang, Yuan Sheng1; Guo, Jin Song1
	2018
摘要	The dynamics model of Alcaligenes faecalis NR was combined with the activated sludge model No. 1 to guide how to make the bioaugmentation of strain NR successful. Model studies show that conventional heterotrophic bacteria in activated sludge always outcompete strain NR. The competition between strain NR and Nitrosomonas, a typical ammonium-oxidizing bacterium (AOB), mainly depends on COD concentration and maximum growth rate of Nitrosomonas. 2000 mg/L of COD ensures that strain NR is always able to outcompete AOB. A biofilm reactor was developed to avoid a quick decrease in influent substrates. Approximately 94.2% of TN and 93.6% of COD were removed in the bioaugmented biofilm reactor, showing much better performance than an identical biofilm reactor without strain NR inoculation. A long-term experiment showed that strain NR successfully proliferated in the bioaugmented reactor. The abundance variation of strain NR mainly depended on influent COD concentrations, which was consistent with the model results.
关键词	Bioaugmentation Heterotrophic nitrogen removal Bioreactor Simultaneous nitrogen and organic carbon removal Kinetic modeling
DOI	10.1016/j.biortech.2017.09.189
发表期刊	BIORESOURCE TECHNOLOGY
ISSN	0960-8524
卷号	247页码:871-880
收录类别	SCI
WOS记录号	WOS:000417841800110
语种	英语