J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Nitrogen removal performance and nitrogen transformation mechanism of ABR based on red mud sintered ceramics

Download Full Text

基于赤泥烧结陶粒的 ABR 反应器脱氮性能和氮转化机制

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), May.2026, Vol.49 No.5: 655-661

DOI: 10.3969/j.issn.1003-5060.2026.05.012

Authors

FANG Jintao $ ^{1,2,3} $, YUE Zhengbo $ ^{1,2,3} $, WANG Jin $ ^{1,2,3} $, MA Ding $ ^{1,2,3} $, LI Hao $ ^{1,2,3} $, WU Wentao $ ^{1,2,3} $

(1. School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China; 2. Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei 230009, China; 3. Anhui Engineering Research Center of Industrial Wastewater Treatment and Resource Recovery, Hefei 230009, China)

Abstract and Keywords

Abstract: In order to investigate the mechanism of nitrogen removal and nitrogen transformation in anaerobic ammonium oxidation coupled to Fe(III) reduction (Feammox), an anaerobic baffled reactor (ABR) based on red mud sintered ceramics was developed to promote the long-term stable treatment of domestic sewage. The reactor reached a stable state after 90 days of acclimation, and the removal rates of $ NH_{4}^{+}-N $ and chemical oxygen demand (COD) were 29.34% and 88.70%, respectively. The formation of secondary minerals ( $ FeCO_{3} $ and FeOOH) indicated that an Fe(III)/Fe(II) redox cycle occurred in the reactor. The reactor was divided into three reaction chambers, each harboring a microbial community enriched with hydrolytic acidifying bacteria, iron-reducing bacteria and iron-oxidizing bacteria. The results of pollutant removal, red mud phase change and microbial analysis showed that hydrolytic acidification, Feammox and nitrate-dependent ferrous oxidation (NDFO) reactions occurred along the reactor. The study results are helpful for deepening the understanding of the Feammox reaction process and developing a single-stage wastewater treatment process based on Feammox.

Keywords: red mud; domestic sewage; anaerobic ammonium oxidation coupled to Fe(III) reduction (Feammox); nitrate-dependent ferrous oxidation(NDFO); iron cycle

作者信息

方金涛 $ ^{1,2,3} $，岳正波 $ ^{1,2,3} $，王进 $ ^{1,2,3} $，马丁 $ ^{1,2,3} $，李豪 $ ^{1,2,3} $，吴文涛 $ ^{1,2,3} $

（1. 合肥工业大学资源与环境工程学院，安徽合肥 230009；2. 纳米矿物与污染控制安徽普通高校重点实验室，安徽合肥 230009；3. 安徽省工业废水处理与资源化工程研究中心，安徽合肥 230009）

摘要和关键词

摘要: 为了探究厌氧氨氧化耦合$\mathrm{Fe(III)}$ 还原（anaerobic ammonium oxidation coupled to $\mathrm{Fe(III)}$）reduction，Feammox）过程的脱氮机制及氮转化机制，文章开发一种基于赤泥烧结陶粒的厌氧折流板反应器（anaerobic baffled reactor，ABR）。该反应器经过90 d驯化达到稳定，$\mathrm{NH_{4}^{+}-N}$ 去除率为29.34%，化学需氧量（chemical oxygen demand，COD）去除率为88.70%；经长期反应，赤泥陶粒表面形成次生矿物$\left(\mathrm{FeCO_{3}}\right.$ 和$\left.\mathrm{FeOOH}\right)$，表明反应器中发生$\mathrm{Fe(III)/Fe(II)}$氧化还原循环；在反应器3个反应室中分别富集以水解酸化菌、铁还原菌和铁氧化菌为主的微生物群落。对反应器沿程污染物转化规律、赤泥物相变化和微生物结果进行分析，结果表明，该反应器沿程发生水解酸化、Feammox和硝酸盐依赖亚铁氧化（nitrate-dependent ferrous oxidation，NDO）反应。研究结果有助于加深对Feammox反应过程的认识和开发基于Feammox的单级废水处理工艺。

关键词: 赤泥；生活污水；厌氧氨氧化耦合 Fe(Ⅲ) 还原(Feammox)；硝酸盐依赖亚铁氧化(NDFO)；铁循环

Funding

国家自然科学基金资助项目（52070062）；安徽省自然科学基金资助项目（2308085QE187）

Previous Next

Back to Contents