Advanced nitrogen removal from municipal wastewater through partial nitrification-denitrification coupled with anammox in step-feed continuous system

被引：9
作者：
Hou, Xiaohang [1 ]
Li, Xiyao [1 ]
Zhu, Xiaorong [2 ,3 ]
Li, Wenyu [1 ]
Kao, Chengkun [1 ]
Peng, Yongzhen [1 ]
机构：
[1] Beijing Univ Technol, Engn Res Ctr Beijing, Natl Engn Lab Adv Municipal Wastewater Treatment &, Beijing 100124, Peoples R China
[2] Capital Med Univ, Beijing Tongren Hosp, Dept Endocrinol, Beijing 100730, Peoples R China
[3] Beijing Diabet Inst, Beijing 100730, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2024年 / 391卷
基金：
中国国家自然科学基金;
关键词：
Biocarriers; One-stage anammox process; Biological nitrogen removal; Multistage A/O; Mainstream; PARTIAL NITRITATION-ANAMMOX; PERFORMANCE;
D O I：
10.1016/j.biortech.2023.129967
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Combined partial nitrification-denitrification/anammox (PN-PD/A) processes have attracted great attention from researchers in recent years to achieve high nitrogen removal from low carbon /nitrogen (C/N) municipal wastewater. In this context, a step-feed anoxic/oxic (A/O) process was conducted in this study through the combination of the partial nitrification-anammox (PN/A) and partial denitrification-anammox (PD/A) to remove N from municipal wastewater with low C/N. The enhancement of the PN-PD/A process resulted in N removal efficiency of 85.6% at C/N of 2.8. The contributions of the anammox reached 36.4 and 8.8% in the anoxic and oxic chambers, respectively. The biocarriers added to the anoxic and oxic chambers increased the relative abundance of the anammox bacteria in biofilms from 0.61% to 1.51% and 1.02%, respectively. This study demonstrated that employing the step-feed A/O process can create optimal conditions for the anammox bacteria growth, thereby ensuring advanced N removal from low C/N municipal wastewater.
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页数：11
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