New insight into sludge reduction induced by different substrate allocation strategy between oxygen and nitrate/nitrite as terminal electron acceptor

doi:10.1016/j.biortech.2018.02.068

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 水质生物转化研究中心

	New insight into sludge reduction induced by different substrate allocation strategy between oxygen and nitrate/nitrite as terminal electron acceptor
	Yan, Peng1,2 ; Guo, Jin-Song1,2 ; Xu, Yu-Feng 3; Chen, You-Peng 1; Wang, Jing 4; Liu, Zhi-Ping 1; Fang, Fang 1
刊名	BIORESOURCE TECHNOLOGY
	2018-06-01
卷号	257 页码:7-16
关键词	Sludge minimization Nutrient removal Substrate allocation Thermodynamic model Stoichiometry
ISSN号	0960-8524
DOI	10.1016/j.biortech.2018.02.068
英文摘要	Sludge reduction based on regulating substrate allocation between catabolism and anabolism as a strategy is proposed to reduce energy and chemicals consumption during wastewater treatment. The results indicated that a sludge reduction of 14.8% and excellent nutrient removal were simultaneously achieved in the low dissolved oxygen (LDO) activated sludge system with a hydraulic retention time of 24 h at 25 degrees C. Denitrifiers comprised nearly 1/4 of all microorganisms in the system. These denitrifiers converted NOx- to N-2 obtaining a lower biomass yield. The oxidoreductase activity proteins in the LDO sample was more than twice that of the normal DO sample, indicating that catabolism was stimulated by NOx- when replacing O-2 as electron acceptor. Less substrate was used for cell synthesis in the LDO system. Stable sludge reduction without extra energy and chemicals inputs was achieved by regulating the substrate allocation by inducing the bacteria to utilize NOx instead of O-2.
资助项目	National Natural Science Foundation of China[51508546] ; National Research Base of Intelligent Manufacturing Service[KFJJ2016037] ; Science and Technology Plan of Ministry of Housing and Urban-Rural Development of China[2016-K4-034]
WOS研究方向	Agriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000430401100002
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/6284]
专题	水质生物转化研究中心
通讯作者	Chen, You-Peng; Fang, Fang
作者单位	1.Chongqing Univ, Key Lab Gorges Reservoir Reg Ecoenvironm MOE 3, Chongqing 400045, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China 3.Hebei Univ Engn, Coll Energy & Environm Engn, Handan 056038, Peoples R China 4.Chongqing Jianzhu Coll, Chongqing 400072, Peoples R China
推荐引用方式 GB/T 7714	Yan, Peng,Guo, Jin-Song,Xu, Yu-Feng,et al. New insight into sludge reduction induced by different substrate allocation strategy between oxygen and nitrate/nitrite as terminal electron acceptor[J]. BIORESOURCE TECHNOLOGY,2018,257:7-16.
APA	Yan, Peng.,Guo, Jin-Song.,Xu, Yu-Feng.,Chen, You-Peng.,Wang, Jing.,...&Fang, Fang.(2018).New insight into sludge reduction induced by different substrate allocation strategy between oxygen and nitrate/nitrite as terminal electron acceptor.BIORESOURCE TECHNOLOGY,257,7-16.
MLA	Yan, Peng,et al."New insight into sludge reduction induced by different substrate allocation strategy between oxygen and nitrate/nitrite as terminal electron acceptor".BIORESOURCE TECHNOLOGY 257(2018):7-16.