The key role of inoculated sludge in fast start-up of sequencing batch reactor for the domestication of aerobic granular sludge

doi:10.1016/j.jes.2018.08.008

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	The key role of inoculated sludge in fast start-up of sequencing batch reactor for the domestication of aerobic granular sludge
	Wang, Xiao-chun 1; Chen, Zhong-lin 1; Kang, Jing 1; Zhao, Xia 2; Shen, Ji-min 1; Yang, Liu 2
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2019-04
卷号	78 页码:127-136
关键词	Aerobic granular sludge Microbial community Sequencing batch reactor Stored granular sludge
ISSN号	1001-0742
DOI	10.1016/j.jes.2018.08.008
英文摘要	Two types of inoculated sludges, granular sludge that had been stored at -20 degrees C and activated sludge, were investigated for the domestication of aerobic granular sludges (AGSs) in sequencing batch reactors (SBRs). The results showed that using the stored granular sludge as inoculation sludge could effectively shorten the domestication time of AGS and yielded mature granular sludge after 22 days of operation. The AGS domesticated by stored granular sludge had better biomass and sedimentation properties; its MLSS and SVI reached 8.55 g/L and 35.27 mL/g, respectively. The removal efficiencies for chemical oxygen demand (COD), ammonium nitrogen (NH4+-N) and total phosphorus (TP) reached 90.76%, 97.39% and 96.40%, respectively. By contrast, 54 days were needed to obtain mature granules using activated sludge. The microbial community structure was probed by using scanning electron microscopy (SEM) and high-throughput sequencing. The results showed that the diversity of the microbial community in mature granules was reduced when stored granular sludge rather than activated sludge was employed as inoculation sludge, and the dominant microbes were changed. The dominant species in mature granules domesticated using stored granular sludge were Zoogloea, Acidovorax and Tolumonas at the genus classification level, while the dominant species were Zoogloea and TM7-genera in granules developed from activated sludge. (c) 2018 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
资助项目	State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology[2017TS02]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000463377700012
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31990]
专题	石油化工学院
通讯作者	Kang, Jing; Shen, Ji-min
作者单位	1.Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Sch Environm, Harbin 150090, Heilongjiang, Peoples R China 2.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xiao-chun,Chen, Zhong-lin,Kang, Jing,et al. The key role of inoculated sludge in fast start-up of sequencing batch reactor for the domestication of aerobic granular sludge[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2019,78:127-136.
APA	Wang, Xiao-chun,Chen, Zhong-lin,Kang, Jing,Zhao, Xia,Shen, Ji-min,&Yang, Liu.(2019).The key role of inoculated sludge in fast start-up of sequencing batch reactor for the domestication of aerobic granular sludge.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,78,127-136.
MLA	Wang, Xiao-chun,et al."The key role of inoculated sludge in fast start-up of sequencing batch reactor for the domestication of aerobic granular sludge".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 78(2019):127-136.