工业水处理 ›› 2026, Vol. 46 ›› Issue (3): 110-118. doi: 10.19965/j.cnki.iwt.2025-0278

• 试验研究 • 上一篇    

两种不同外加碳源污水处理系统的生命周期评价

雷馨雨1,2(), 郭喜志3, 许梁4, 刘雅君4, 王剑英1,5, 崔英辉6, 赵全保1,2()   

  1. 1. 中国科学院城市环境研究所,中国科学院城市污染物转化重点实验室,福建 厦门 361021
    2. 福州大学环境与安全工程学院,福建 福州 350108
    3. 中节能(莆田)再生资源利用有限公司,福建 莆田 351100
    4. 厦门烟草工业有限责任公司,福建 厦门 361028
    5. 华盛顿州立大学生物 系统工程学系,华盛顿州普尔曼 99164
    6. 嘉兴市联合污水处理有限责任公司,浙江 嘉兴 314000
  • 收稿日期:2025-07-14 出版日期:2026-03-20 发布日期:2026-03-30
  • 通讯作者: 赵全保
  • 作者简介:

    雷馨雨(2000— ),硕士,E-mail:

  • 基金资助:
    福建省科技计划项目(2021T2023); 福建省科技计划项目(2023T3010)

Life cycle assessment of two sewage treatment systems with different external carbon sources

Xinyu LEI1,2(), Xizhi GUO3, Liang XU4, Yajun LIU4, Jianying WANG1,5, Yinghui CUI6, Quanbao ZHAO1,2()   

  1. 1. Key Laboratory of Urban Pollutant Transformation, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
    2. College of Environmental and Safety Engineering, Fuzhou University, Fuzhou 350108, China
    3. CECEP(Putian) Renewable Resources Utilization Co. , Ltd. , Putian 351100, China
    4. Xiamen Tobacco Industry Co. , Ltd. , Xiamen 361028, China
    5. Department of Biological Systems Engineering, Washington State University, Pullman 99164, USA
    6. Jiaxing United Sewage Treatment Co. , Ltd. , Jiaxing 314000, China
  • Received:2025-07-14 Online:2026-03-20 Published:2026-03-30
  • Contact: Quanbao ZHAO

摘要:

为响应中国“双碳”战略目标,针对污水处理系统碳减排需求,对比了系统1(S1,以乙酸钠为碳源)和系统2(S2,以餐厨垃圾厌氧发酵液为碳源)对环境的不同影响。基于生命周期评价的框架,针对S2采用了放大实验室规模数据的方法完善了生命周期清单,然后对两系统运营阶段的资源消耗与排放清单进行分析。结果表明,S2所有环境影响评价指标均优于S1,因此采用餐厨垃圾产酸发酵液替代乙酸钠具有一定环境效益。电力消耗为两系统主要环境影响因子,但S2通过替代碳源减少了18.3%的全球变暖潜值。敏感性分析显示,S1用电量及光伏比例变化对环境影响敏感;而S2中餐厨垃圾运输距离与氢氧化钠用量对污水处理系统生命周期的环境影响较小;减少发酵液使用量时,臭氧层耗竭潜值和非生物资源耗竭潜值增大最明显。建议未来通过中试或实际工程试验优化数据精度以提升评价可靠性。

关键词: 生命周期评价, 碳源, 碳减排, 餐厨垃圾

Abstract:

In response to China’s “dual carbon” strategic goals, this study compared the different environmental impacts of system 1(S1)—a sewage treatment system using sodium acetate as carbon source, and system 2(S2)—a sewage treatment system using anaerobic fermentation broth from kitchen waste as carbon source, to address the carbon reduction needs of sewage treatment systems. Based on the framework of life cycle assessment, a method of amplifying laboratory scale data was adopted for S2 to improve the life cycle inventory. The analysis of the resource consumption and emission inventory of the two system operation stages showed that S2 was superior to S1 in all environmental impact indicators. Therefore, using food waste acid fermentation broth instead of sodium acetate had certain environmental benefits. Electricity consumption was the main environmental impact factor for both systems, while S2 reduced global warming potential by 18.3% by replacing carbon sources. Sensitivity analysis showed that S1 was sensitive to changes of electricity consumption and photovoltaic ratio, while the transportation distance of food waste and the amount of sodium hydroxide used in S2 had a relatively small impact on the life cycle results of the sewage treatment system. When reducing the use of fermentation broth, the ozone depletion potential and non biological resource depletion potential increased most significantly. It was recommended to optimize data accuracy through pilot or actual engineering trials in the future to improve evaluation reliability.

Key words: life cycle assessment, carbon source, carbon emission reduction, food waste

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