In-situ restoring nitrogen removal for the combined partial nitritation-anammox process deteriorated by nitrate build-up

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 水污染控制实验室

	In-situ restoring nitrogen removal for the combined partial nitritation-anammox process deteriorated by nitrate build-up
	Wang, Yuanyue; Chen, Meixue; Wei, Yuansong; Wang, Yawei
刊名	BIOCHEMICAL ENGINEERING JOURNAL
	2015-06-15
卷号	98 页码:127-136
关键词	Integrated Processing Waste-water Treatment Batch Processing Microbial Growth Hydroxylamine Solids Retention Time
英文摘要	The nitrogen removal performance in the combined partial nitritation-anammox (CPNA) process was seriously deteriorated by the nitrate build-up. The purpose of this study was to develop and optimize an in-situ restoring strategy based on hydroxylamine (NH2OH) dosing and solids retention time (SRT) control for the deteriorated CPNA process. Results showed that the 0.55 kgN m(-3) d(-1) of nitrogen removal rate could be recovered by 20 mgNH(2)OH L-1 of hydroxylamine dosing and 40 days of SRT control, the nitrate concentration in effluent was decreased from the highest 548.4 mgN L-1 during deterioration to 65.1 mgN L-1 after restoration, and the ratio of NO3--N-produced/NH4+-N-consumed in one SBR cycle was reduced from the highest 87.0% to 9.13% finally. The inhibition of nitrite-oxidizing bacteria (NOB) by NH2OH dosing alone was reversible because the nitrate build-up occurred again from 106.9 to 287.6 mgN L-1 within just 11 days after NH2OH dosing was stopped. The evolution of the anammox bacteria, ammonium-oxidizing bacteria (AOB) and NOB from quantitative PCR (qPCR) assays verified the changes of the nitrogen removal performance of the CPNA process and proved that this in-situ restoration strategy could successfully solve the problem of nitrate build-up in the CPNA process. (C) 2015 Elsevier B.V. All rights reserved.
WOS研究方向	Biotechnology & Applied Microbiology ; Engineering, Chemical
WOS记录号	WOS:000353008000016
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32879]
专题	生态环境研究中心_水污染控制实验室
推荐引用方式 GB/T 7714	Wang, Yuanyue,Chen, Meixue,Wei, Yuansong,et al. In-situ restoring nitrogen removal for the combined partial nitritation-anammox process deteriorated by nitrate build-up[J]. BIOCHEMICAL ENGINEERING JOURNAL,2015,98:127-136.
APA	Wang, Yuanyue,Chen, Meixue,Wei, Yuansong,&Wang, Yawei.(2015).In-situ restoring nitrogen removal for the combined partial nitritation-anammox process deteriorated by nitrate build-up.BIOCHEMICAL ENGINEERING JOURNAL,98,127-136.
MLA	Wang, Yuanyue,et al."In-situ restoring nitrogen removal for the combined partial nitritation-anammox process deteriorated by nitrate build-up".BIOCHEMICAL ENGINEERING JOURNAL 98(2015):127-136.