纳米四氧化三铁对生物脱氮及温室气体排放的影响研究

刘思征; 周文; 叶延飞; 谭谈; 杨帆; 杨一铭; 李佳蔚; 隋倩雯; 陈梅雪; 魏源送

doi:10.13205/j.hjgc.202512014

纳米四氧化三铁对生物脱氮及温室气体排放的影响研究

doi: 10.13205/j.hjgc.202512014

刘思征^1,2,
周文^1,2,
叶延飞^1,2,
谭谈^1,2,
杨帆^1,2,
杨一铭³,
李佳蔚³,
隋倩雯^3, ,,
陈梅雪³,
魏源送³

1. 中国电建集团环境工程有限公司, 杭州 310015;
2. 中电建路桥集团有限公司, 北京 100160;
3. 中国科学院生态环境研究中心水污染控制实验室, 北京 100085

基金项目:

国家重点研发计划项目（2021YFC3200601）；中国科学院青年创新促进会项目（2021042）；中电建路桥集团有限公司科技项目（LQKY2021-06）；中国电建集团环境工程有限公司科技项目（RCEES-HX-JSFW2023000215）

详细信息

作者简介:
刘思征（1983—），男，高级经济师/工程师，主要研究方向为污水处理、土壤修复与固废资源化。liuszh@powerchina.cn

通讯作者:
隋倩雯（1986—），女，副研究员，主要研究方向为废水生物处理技术。qwsui@rcees.ac.cn

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出版历程
- 收稿日期: 2024-09-05
- 录用日期: 2024-10-05
- 修回日期: 2024-09-25
- 网络出版日期: 2026-01-09

Effect of ferroferric oxide nanoparticles on biological nitrogen removal and GHG emissions of denitrification and partial denitrification-anaerobic ammoxidation （PD/A） reactions

1. PowerChina Environmental Engineering Co., Ltd., Hangzhou 310015, China;
2. PowerChina Road Bridge Group Co., Ltd., Beijing 100160, China;
3. Department of Water Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

摘要

摘要: 污水处理是重要的甲烷（CH₄）和氧化亚氮（N₂O）排放源。如何快速提升污染物去除效能并减排温室气体，目前缺乏有效的技术方法。构建了脱氮与气体排放监测装置，考察了纳米四氧化三铁（n-Fe₃O₄）的短期生物效应，探讨了反硝化反应与部分反硝化-厌氧氨氧化（PD/A）反应的脱氮性能与温室气体排放。在处理实际生活污水时，n-Fe₃O₄使反硝化反应NO^-₃-N去除速率提高了2.13倍，N₂O减排25%。n-Fe₃O₄使PD/A反应对NO^-₃-N的去除率提高了1.53倍，分别降低CH₄和N₂O排放71.4%和33.3%。在处理乙酸钠配制污水时，具有相似效果。n-Fe₃O₄在有限碳源条件下可有效提高脱氮效率，提升NO^-₃-N去除率，降低CH₄和N₂O排放，这可能是由于n-Fe₃O₄对关键功能酶活性及电子转移能力的促进作用。
- 生物脱氮 /
- 厌氧氨氧化 /
- 纳米四氧化三铁 /
- 甲烷 /
- 氧化亚氮
Abstract: Wastewater treatment is an important source of methane （CH₄） and nitrous oxide （N₂O） emissions. The method for simultaneously enhancing pollutant removal and reducing greenhouse gas emissions needs to be investigated. Ferric oxide， known as magnetic iron oxide， has the characteristics of better electrical conductivity and magnetism， and it has been gradually paid attention to in pollutants treatment. In this study， a monitoring device for nitrogen removal and greenhouse gas emissions was constructed to investigate the short-term biological effects of ferroferric oxide nanoparticles， and explore the nitrogen removal performance and greenhouse gas emission characteristics of denitrification and partial denitrification-anaerobic ammoxidation （PD/A） reactions. The results showed that， in the treatment of actual domestic sewage， the addition of ferroferric oxide nanoparticles increased the NO^-₃-N removal rate of denitrification by 2.13 times， and N₂O emissions were reduced by 25%. Furthermore， the addition of ferroferric oxide nanoparticles increased the NO^-₃-N removal rate of PD/A reactions by 1.53 times， while decreasing CH₄ and N₂O emissions by 71.4% and 33.3%， respectively. A similar effect was observed in the treatment of simulated wastewater prepared with sodium acetate. As an external carbon source， sodium acetate is widely used in sewage treatment plants， which has a low GHG emission factor while increasing the total nitrogen removal rate. The addition of ferroferric oxide nanoparticles proved to be effective in achieving efficient nitrogen removal in the presence of limited carbon sources， significantly increased NO^-₃-N removal rate， and reduced CH₄ and N₂O emissions. These effects are likely attributed to the promotion of ferroferric oxide nanoparticles on the activity of key functional enzymes and their ability to facilitate electron transfer.
- nitrogen removal /
- anaerobic ammonia oxidation /
- ferroferric oxide nanoparticles /
- methane /
- nitrous oxide

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