Nitrogen Advanced Treatment of Urban Sewage by Denitrification Deep-Bed Filter: Removal Performance and Metabolic Pathway

doi:10.3389/fmicb.2021.811697

	Nitrogen Advanced Treatment of Urban Sewage by Denitrification Deep-Bed Filter: Removal Performance and Metabolic Pathway
	Huang, Xiao 1,2; Xing, Yixiao 1; Wang, Hongjie 2,3; Dai, Zhongyi 4; Chen, Tiantian5
	2022-01-26
发表期刊	FRONTIERS IN MICROBIOLOGY
卷号	12 页码:10
通讯作者	Wang, Hongjie(whj1533@qq.com) ; Chen, Tiantian(chentian0819@163.com)
摘要	This study aimed to explore the performance of denitrification deep-bed filter (DN-DBF) to treat municipal sewage for meeting a more stringent discharge standard of total nitrogen (TN) (10.0 mg L-1). A lab-scale DN-DBF was conducted to optimize operation parameters and reveal the microbiological mechanism for TN removal. The results showed that more than 12.7% TN removal was obtained by adding methanol compared with sodium acetate. The effluent TN concentration reached 6.0-7.0 mg L-1 with the optimal influent carbon and nitrogen ratio (C/N) and hydraulic retention time (HRT) (3:1 and 0.25 h). For the nitrogen removal mechanism, Blastocatellaceae_Subgroup_4 and norank_o_JG30-KF-CM45 were dominant denitrification floras with an abundance of 6-10%. Though large TN was removed at the top layer of DN-DBF, microbial richness and diversity at the middle layer were higher than both ends. However, the relative abundance of nitrite reductase enzymes (EC1.7.2.1) gradually increases as the depth increases; conversely, the relative abundance of nitrous oxide reductase gradually decreased.
关键词	advanced treatment denitrification deep-bed filter conditions optimization total nitrogen metabolic pathway
DOI	10.3389/fmicb.2021.811697
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[421078064] ; Project of Shenzhen Science and Technology Plan[KCXFZ202001011006362] ; Project of Shenzhen Science and Technology Plan[KJYY20180718094802190] ; Project of Shenzhen Science and Technology Plan[JCYJ20200109113006046] ; Project of China Municipal Engineering Central South Design and Research Institute (Theory and Application: High Efficiency, Energy Saving and Intelligent Biological Enhanced Denitrification Process) ; Doctor Program of Entrepreneurship and Innovation in Jiangsu Province[R2020SCB10]
WOS研究方向	Microbiology
WOS类目	Microbiology
WOS记录号	WOS:000752837300001
出版者	FRONTIERS MEDIA SA
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/177798
专题	海洋生态与环境科学重点实验室
通讯作者	Wang, Hongjie; Chen, Tiantian
作者单位	1.Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Collaborat Innovat Ctr Atmospher Environm & Equip, Jiangsu Key Lab Atmospher Environm Monitoring & P, Nanjing, Peoples R China 2.Harbin Inst Technol, Shenzhen Key Lab Water Resource Utilizat & Enviro, Sch Civil & Environm Engn, Shenzhen, Peoples R China 3.Harbin Inst Technol, Sch Environm, State Key Lab Urban Water Resource & Environm, Harbin, Peoples R China 4.China Municipal Engn Cent South Design & Res Inst, Wuhan, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Huang, Xiao,Xing, Yixiao,Wang, Hongjie,et al. Nitrogen Advanced Treatment of Urban Sewage by Denitrification Deep-Bed Filter: Removal Performance and Metabolic Pathway[J]. FRONTIERS IN MICROBIOLOGY,2022,12:10.
APA	Huang, Xiao,Xing, Yixiao,Wang, Hongjie,Dai, Zhongyi,&Chen, Tiantian.(2022).Nitrogen Advanced Treatment of Urban Sewage by Denitrification Deep-Bed Filter: Removal Performance and Metabolic Pathway.FRONTIERS IN MICROBIOLOGY,12,10.
MLA	Huang, Xiao,et al."Nitrogen Advanced Treatment of Urban Sewage by Denitrification Deep-Bed Filter: Removal Performance and Metabolic Pathway".FRONTIERS IN MICROBIOLOGY 12(2022):10.

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