SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2023, Vol. 56 ›› Issue (4): 80-88.DOI: 10.1016/j.cjche.2022.07.030

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Life cycle assessment of high concentration organic wastewater treatment by catalytic wet air oxidation

Yuxi Chai1, Yanan Zhang2, Yannan Tan2, Zhiwei Li3, Huangzhao Wei2, Chenglin Sun2, Haibo Jin1, Zhao Mu4, Lei Ma1   

  1. 1. Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of New Materials and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China;
    2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    3. School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China;
    4. Institute of Applied Chemical Technology for Oilfield/College of New Materials and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
  • Received:2022-03-19 Revised:2022-07-01 Online:2023-06-13 Published:2023-04-28
  • Contact: Zhao Mu,E-mail:muzhao@bipt.edu.cn;Lei Ma,E-mail:malei@bipt.edu.cn
  • Supported by:
    This research was supported by National Natural Science Foundation of China (52100072, 52100213), the Fundamental Research Funds for the Central Universities (JZ2021HGTA0159, JZ2021HGQA0212), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA21021101), the Scientific Research Common Program of Beijing Municipal Commission of Education (KM202010017006), and the Beijing Natural Science Foundation (8214056).

Life cycle assessment of high concentration organic wastewater treatment by catalytic wet air oxidation

Yuxi Chai1, Yanan Zhang2, Yannan Tan2, Zhiwei Li3, Huangzhao Wei2, Chenglin Sun2, Haibo Jin1, Zhao Mu4, Lei Ma1   

  1. 1. Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of New Materials and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China;
    2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    3. School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China;
    4. Institute of Applied Chemical Technology for Oilfield/College of New Materials and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
  • 通讯作者: Zhao Mu,E-mail:muzhao@bipt.edu.cn;Lei Ma,E-mail:malei@bipt.edu.cn
  • 基金资助:
    This research was supported by National Natural Science Foundation of China (52100072, 52100213), the Fundamental Research Funds for the Central Universities (JZ2021HGTA0159, JZ2021HGQA0212), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA21021101), the Scientific Research Common Program of Beijing Municipal Commission of Education (KM202010017006), and the Beijing Natural Science Foundation (8214056).

Abstract: There have been many studies on life cycle assessment in sewage treatment, but there are scarce few studies on the treatment of industrial wastewater in combination with advanced oxidation technology, especially in catalytic wet air oxidation (CWAO). There are no cases of using actual industrialized data onto life cycle assessment. This paper uses Simapro 9.0 software to establish a life cycle assessment model for the treatment of high-concentration organic wastewater by CWAO, and comprehensively explains the impact on the environment from three aspects: the construction phase, the operation phase and the demolition phase. In addition, sensitivity analysis and uncertainty analysis were performed. The results showed that the key factors affecting the environment were marine ecotoxicity, mineral resource consumption and global warming, the operation stage had the greatest impact on the environment, which was related to high power consumption during operation and emissions from the treatment process. Sensitivity analysis showed that electricity consumption has the greatest impact on abiotic depletion and freshwater aquatic ecotoxicity, and it also proved that global warming is mainly caused by pollutant emissions during operation phase. Monte Carlo simulations found slightly higher uncertainty for abiotic depletion and toxicity-related impact categories.

Key words: Wastewater treatment, High-concentration organic wastewater, Catalytic wet air oxidation, Life-cycle assessment

摘要: There have been many studies on life cycle assessment in sewage treatment, but there are scarce few studies on the treatment of industrial wastewater in combination with advanced oxidation technology, especially in catalytic wet air oxidation (CWAO). There are no cases of using actual industrialized data onto life cycle assessment. This paper uses Simapro 9.0 software to establish a life cycle assessment model for the treatment of high-concentration organic wastewater by CWAO, and comprehensively explains the impact on the environment from three aspects: the construction phase, the operation phase and the demolition phase. In addition, sensitivity analysis and uncertainty analysis were performed. The results showed that the key factors affecting the environment were marine ecotoxicity, mineral resource consumption and global warming, the operation stage had the greatest impact on the environment, which was related to high power consumption during operation and emissions from the treatment process. Sensitivity analysis showed that electricity consumption has the greatest impact on abiotic depletion and freshwater aquatic ecotoxicity, and it also proved that global warming is mainly caused by pollutant emissions during operation phase. Monte Carlo simulations found slightly higher uncertainty for abiotic depletion and toxicity-related impact categories.

关键词: Wastewater treatment, High-concentration organic wastewater, Catalytic wet air oxidation, Life-cycle assessment