Response and recovery of aerobic granular sludge to pH shock for simultaneous removal of aniline and nitrogen

doi:10.1016/j.chemosphere.2018.12.207

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Response and recovery of aerobic granular sludge to pH shock for simultaneous removal of aniline and nitrogen
	Jiang, Yu 2; Yang, Kai 2; Shang, Yu 2; Zhang, Huining 1; Wei, Li 3; Wang, Hongyu 2
刊名	Chemosphere
	2019-04-01
卷号	221 页码:366-374
关键词	Aniline Chemical oxygen demand Efficiency Granular materials Nitrogen Nitrogen removal pH effects Recovery Aerobic granular sludges Aniline removals Extra-cellular polymeric substances Industrial wastewaters Nitrogen reduction pH shocks Removal efficiencies Simultaneous removal
ISSN号	00456535
DOI	10.1016/j.chemosphere.2018.12.207
英文摘要	Considering the pH fluctuation in industrial wastewater, the response and resilience to pH shock should be investigated during aerobic granular sludge (AGS) system operation. In this work, three AGS reactors, namely R1, R2, and R3 for simultaneous removal of aniline and nitrogen were exposed to neutral, acidic, and alkaline conditions, respectively. The removal efficiency of aniline and chemical oxygen demand with pH variation was over 99.9% and 91.0%, respectively after stable in the three reactors. The aniline removal rate modestly decreased in R2 and R3 after pH varied and denitrification was slightly improved in acidic environment with average removal efficiency of 61.2%. The mature AGS could maintain settleability in R1 and R2 with 30 min sludge volume index below 35 mL g−1 but was unstable under alkaline condition. Correspondingly, the secretion of extracellular polymeric substances especially protein decreased notably in R3. The bacterial groups varied with pH shock, but some could recover after adjustment to original pH value. Proteobacteria was the predominant phylum in the three reactors and Bacteroidetes was enriched in alkaline conditions. In addition, the main functional genera such as Achromobacter, Defluviimonas, Enterobacter, Pseudomonas, and Pseudoxanthomonas, were detected in the system and were found to be responsible for reduction of aniline and nitrogen. © 2019 Elsevier Ltd
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000460710700041
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150599]
专题	土木工程学院
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730000, China; 2.School of Civil Engineering, Wuhan University, Wuhan; 430072, China; 3.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin; 150090, China
推荐引用方式 GB/T 7714	Jiang, Yu,Yang, Kai,Shang, Yu,et al. Response and recovery of aerobic granular sludge to pH shock for simultaneous removal of aniline and nitrogen[J]. Chemosphere,2019,221:366-374.
APA	Jiang, Yu,Yang, Kai,Shang, Yu,Zhang, Huining,Wei, Li,&Wang, Hongyu.(2019).Response and recovery of aerobic granular sludge to pH shock for simultaneous removal of aniline and nitrogen.Chemosphere,221,366-374.
MLA	Jiang, Yu,et al."Response and recovery of aerobic granular sludge to pH shock for simultaneous removal of aniline and nitrogen".Chemosphere 221(2019):366-374.