Changes of nitrogen and phosphorus removal pattern caused by alternating aerobic/anoxia from the perspective of microbial characteristics

被引:0
作者
Yao, Kai [1 ]
Huang, Xiao [1 ,2 ]
Dong, Wenyi [2 ]
Wang, Fupeng [3 ]
Liu, Xueyong [3 ,4 ]
Yan, Yu [3 ,4 ]
Qu, Yanhui [5 ]
Fu, Yicheng [6 ]
机构
[1] Nanjing Univ Informat Sci Technol, Sch Environm Sci & Engn, Collaborat Innovat Ctr Atmospher Environm & Equip, Jiangsu Key Lab Atmospher Environm Monitoring & P, Nanjing 210044, Peoples R China
[2] Harbin Inst Technol Shenzhen, Sch Civil & Environm Engn, Shenzhen Key Lab Water Resources Utilizat & Envir, Shenzhen 518055, Peoples R China
[3] Northeast China Municipal Engn Design & Res Inst, Jilin 130021, Peoples R China
[4] China Commun Construct Co Ltd, Urban & Rural Water Environm Technol R&D Ctr, Jilin 130021, Peoples R China
[5] China Urban & Rural Holdings Grp Co Ltd, Beijing 100029, Peoples R China
[6] China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat River Basin Water, Beijing 100038, Peoples R China
基金
中国国家自然科学基金;
关键词
Alternating a/o; Aerobic denitrification; Denitrifying phosphorus removal; Microbial diversity; Metabolic functions; PARTIAL NITRIFICATION; WASTE-WATER; DENITRIFICATION; COMMUNITY; BACTERIA; EMISSION; REACTOR; N2O;
D O I
10.1007/s11356-023-27302-9
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The purpose of this study was to compare the impact of different numbers of alternating aerobic/anoxic (A/O) cycles on pollutant removal. Three sequential batch reactors (SBRs) with varying numbers of alternating A/O cycles were established. Under the tertiary anoxic operating conditions, the removal efficiencies of chemical oxygen demand (COD), ammonia nitrogen (NH4+-N), total nitrogen (TN), and total phosphorus (TP) were 88.73%, 89.56%, 72.15%, and 77.61%, respectively. Besides, alternating A/O affected the dominant microbial community relative abundance (Proteobacteria and Bacteroidetes) and increased microbial richness and diversity. It also increased the relative abundance of aerobic denitrifying, heterotrophic nitrifying, and denitrifying phosphorus removal bacteria to change N and P removal patterns. Furthermore, the abundance of carbohydrate metabolism and amino acid metabolism was improved by alternating A/O to improve organic matter and TN removal.
引用
收藏
页码:68863 / 68876
页数:14
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