CONSTRUCTION OF A COMPREHENSIVE IMPACT ASSESSMENT METHOD OF SEWAGE TREATMENT TECHNOLOGY BASED ON LCA-AHP MODEL

LIU Yanbo; ZHANG Zhaohan; LIU Guohong; SONG Yanfang; LI Jiannan; DUAN Jinhao; FENG Yujie

doi:10.13205/j.hjgc.202412007

Volume 42 Issue 12

Dec. 2024

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2024 > 42(12): 52-59

LIU Yanbo, ZHANG Zhaohan, LIU Guohong, SONG Yanfang, LI Jiannan, DUAN Jinhao, FENG Yujie. CONSTRUCTION OF A COMPREHENSIVE IMPACT ASSESSMENT METHOD OF SEWAGE TREATMENT TECHNOLOGY BASED ON LCA-AHP MODEL[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(12): 52-59. doi: 10.13205/j.hjgc.202412007

Citation:

LIU Yanbo, ZHANG Zhaohan, LIU Guohong, SONG Yanfang, LI Jiannan, DUAN Jinhao, FENG Yujie. CONSTRUCTION OF A COMPREHENSIVE IMPACT ASSESSMENT METHOD OF SEWAGE TREATMENT TECHNOLOGY BASED ON LCA-AHP MODEL[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(12): 52-59. doi: 10.13205/j.hjgc.202412007

Citation:

LIU Yanbo, ZHANG Zhaohan, LIU Guohong, SONG Yanfang, LI Jiannan, DUAN Jinhao, FENG Yujie. CONSTRUCTION OF A COMPREHENSIVE IMPACT ASSESSMENT METHOD OF SEWAGE TREATMENT TECHNOLOGY BASED ON LCA-AHP MODEL[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(12): 52-59. doi: 10.13205/j.hjgc.202412007

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CONSTRUCTION OF A COMPREHENSIVE IMPACT ASSESSMENT METHOD OF SEWAGE TREATMENT TECHNOLOGY BASED ON LCA-AHP MODEL

doi: 10.13205/j.hjgc.202412007

1. State Key Laboratory of Urban Water Resources and Environment, School of Environmental Sciences, Harbin Institute of Technology, Harbin 150090, China;
2. Joint Research Program for Ecological Conservation and High-Quality Development of the Yellow RiverBasin, Beijing 100012, China

Received Date: 2024-08-28
Available Online: 2025-01-18

Abstract

Abstract

This study addresses the practical need for wastewater treatment in a city of Gansu Province, aiming to scientifically evaluate and identify the efficient, low-carbon wastewater treatment technologies. It innovatively integrated lifecycle assessment (LCA) with the analytic hierarchy process (AHP) to establish a comprehensive technical evaluation model for wastewater treatment. Initially, LCA was employed to systematically quantify the environmental footprint of six practically applied wastewater treatment processes (AAO, AAO+MBR, AAO+SBR, MSBR, CAST+BAF, and SBR) over their operational cycles, with a focus on their impacts on key environmental dimensions such as global warming potential, eutrophication risks in freshwater and marine ecosystems, and fossil resource consumption. Subsequently, based on the salient environmental impact findings from LCA, the AHP framework was applied to assign weights and rank the processes comprehensively, incorporating economic benefits and technical performance. LCA characterization analysis revealed that MSBR and AAO+MBR process excelled in mitigating environmental impact indicators. Normalization results further indicated that all evaluated processes significantly contribute to global climate warming, accompanied by ecological eutrophication and potential human health risks. The AHP comprehensive evaluation model explicitly demonstrated that AAO+MBR and MSBR processes held the highest weight values of 0.2255 and 0.2229, respectively, indicating their superior low-carbon benefits and technical efficiency under a comprehensive assessment framework. Additionally, the AHP indicator-level analysis emphasized the priority of performance indicators (e.g., EQI, COD removal rate) and the control of potential impacts on human health and water eutrophication during technology selection. This study not only provides a tailored solution for wastewater treatment technology selection in the targeted city of Gansu Province, but also offers scientific decision-making support for the optimization and upgrade of wastewater treatment technologies in the upstream Yellow River Basin and other similar aquatic environments. The application of this evaluation framework contributes to advancing the wastewater treatment industry in a more environmentally friendly and efficient direction, achieving a win-win scenario between economic and environmental benefits.
- urban wastewater treatment process,
- LCA,
- AHP,
- integrated water environment management in the Yellow River Basin,
- pollution reduction and carbon reduction

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References(18)

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