| 引用本文: | 张石进,丁晶,王琨,赵庆良,杨红,郜阔,侯秉东.污水生化处理中N2O产生途径、影响因素及减排策略[J].哈尔滨工业大学学报,2025,57(2):33.DOI:10.11918/202401069 |
| ZHANG Shijin,DING Jing,WANG Kun,ZHAO Qingliang,YANG Hong,GAO Kuo,HOU Bingdong.Pathways, influencing factors and mitigation strategies for N2O emissions in wastewater biochemical treatment[J].Journal of Harbin Institute of Technology,2025,57(2):33.DOI:10.11918/202401069 |
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| 污水生化处理中N2O产生途径、影响因素及减排策略 |
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张石进1,丁晶1,王琨1,赵庆良1,杨红2,郜阔2,侯秉东2
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(1.哈尔滨工业大学 环境学院,哈尔滨 150090;2.上海勘测设计研究院有限公司,上海 200435)
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| 摘要: |
| 污水处理是重要的温室气体排放源之一,污水生化处理中氧化亚氮（N2O）的产生及排放已经成为研究的热点。N2O的产生机制复杂,不同工艺、不同操作条件下排放特性差异大。目前,已有大量针对污水生化处理过程中N2O产生排放的研究,但基于N2O产生途径的分析、评述N2O减排策略的内容较少。系统探讨了污水生化处理过程中N2O的主要产生途径,即NH2OH氧化、硝化细菌反硝化、异养反硝化以及非生物途径；阐述了N2O产生的影响因素,包括碳源、氮源、盐度等污水水质特性,溶解氧、回流比等工艺参数以及微生物种群分布等；总结了相应的减排策略,即可通过工艺条件优化、不同生化工艺耦合以及低N2O产生水平微生物种群的富集等方法有效降低N2O的产生排放；评述了目前研究存在的问题以及未来发展方向,模型的构建仍是研究污水生化处理过程中N2O产生排放的有效方法,在N2O回收的研究中具有广阔前景。 |
| 关键词: 氧化亚氮 生物脱氮 碳减排 污水生化处理 |
| DOI：10.11918/202401069 |
| 分类号:X703 |
| 文献标识码:A |
| 基金项目:企业委托项目“污水处理厂全流程低碳策略和技术分析”(2021SZ(37)-011) |
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| Pathways, influencing factors and mitigation strategies for N2O emissions in wastewater biochemical treatment |
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ZHANG Shijin1,DING Jing1,WANG Kun1,ZHAO Qingliang1,YANG Hong2,GAO Kuo2,HOU Bingdong2
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(1.School of Environment, Harbin Institute of Technology, Harbin 150090, China; 2.Shanghai Investigation, Design & Research Institute, Shanghai 200435, China)
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| Abstract: |
| Wastewater treatment is a significant contributor to greenhouse gas emissions, and the generation and emission of nitrous oxide (N2O) in wastewater biochemical treatment have become a hot research topic. The production mechanism of N2O generation is complex, and emission characteristics vary widely depending on the processes and operating conditions. While numerous studies have investigated N2O generation and emission in wastewater biochemical treatment, there is a lack of research on N2O emission reduction strategies based on the analysis of N2O generation pathways. This paper systematically discusses the primary pathways of N2O production in wastewater biochemical treatment process, including NH2OH oxidation, nitrifier denitrification, heterotrophic denitrification, and abiotic pathways. The factors influencing N2O production are described, including wastewater characteristics such as carbon source, nitrogen source, salinity, process parameters such as dissolved oxygen, reflux ratio, and the distribution of microbial communities. This paper summarizes corresponding mitigation strategies, highlighting the effective reduction of N2O production and emission through process optimization, coupling different biochemical processes, and enriching microbial communities with low N2O production levels. Current research challenges and future development directions are assessed, emphasizing that model construction remains an effective method to study N2O production and emission biochemical treatment of wastewater, with broad prospect in N2O recovery research. |
| Key words: nitrous oxide biological nitrogen removal carbon emission reduction biochemical wastewater treatment |
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