Evaluation of various carbon sources on ammonium assimilation and denitrifying phosphorus removal in a modified anaerobic-anoxic-oxic process from low-strength wastewater

被引：6
作者：
Zhang, Guanglin [1 ]
Li, Weiguang [1 ,2 ,5 ]
Wang, Shuncai [1 ]
Li, Donghui [1 ]
Zhang, Duoying [3 ]
Lv, Longyi [4 ]
机构：
[1] Harbin Inst Technol, Sch Environm, Harbin 150090, Peoples R China
[2] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China
[3] Heilongjiang Univ, Sch Civil Engn, Harbin 150080, Peoples R China
[4] Hebei Univ Technol, Sch Energy & Environm Engn, Tianjin Key Lab Clean Energy & Pollut Control, 5340 Xiping Rd, Tianjin 300401, Peoples R China
[5] Harbin Inst Technol, Sch Environm, State Key Lab Urban Water Resource & Environm, 73 Huanghe Rd, Harbin 150090, Peoples R China
来源：
SCIENCE OF THE TOTAL ENVIRONMENT | 2024年 / 926卷
关键词：
Low-strength wastewater; External carbon sources; Acetate; Ammonium assimilation; Denitrifying phosphorus removal; ACCUMULATING ORGANISMS; NUTRIENT REMOVAL; MICROBIAL COMMUNITY; BIOLOGICAL NITROGEN; DENITRIFICATION; POLYPHOSPHATE; COMPETITION; PROPIONATE; SEWAGE; NITRIFICATION;
D O I：
10.1016/j.scitotenv.2024.171890
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A pilot-scale continuous-flow modified anaerobic-anoxic-oxic (MAAO) process examined the impact of external carbon sources (acetate, glucose, acetate/propionate) on ammonium assimilation, denitrifying phosphorus removal (DPR), and microbial community. Acetate exhibited superior efficacy in promoting the combined process of ammonia assimilation and DPR, enhancing both to 50.0 % and 60.0 %, respectively. Proteobacteria and Bacteroidota facilitated ammonium assimilation, while denitrifying phosphorus-accumulating organisms (DPAOs) played a key role in nitrogen (N) and phosphorus (P) removal. Denitrifying glycogen-accumulating organisms (DGAOs) aided N removal in the anoxic zone, ensuring stable N and P removal and recovery. Acetate/propionate significantly enhanced DPR (77.7 %) and endogenous denitrification (37.9 %). Glucose favored
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页数：11
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