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.

引用

页数：11

共 40 条

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