CHENJi-yi,LIUYang,SHIZhou,et al.Low-carbon Optimization Design Strategy of Urban Water Supply System and Its Application[J].China Water & Wastewater,2024,40(24):46-52.
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Low-carbon Optimization Design Strategy of Urban Water Supply System and Its Application

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第40卷 Number: 第24期 Page: 46-52 Column: Date of publication: 2024-12-17
Author(s):
CHEN　Ji-yi1;  LIU　Yang1; 2;  SHI　Zhou2;  WEN　Yu-hong1;  LONG　Yi-xiang1;  WU　Yang-chun1;  WU　Wei-hong1;  WANG　Xiang1
（1. Hunan Province Architectural Design Institute Group Co. Ltd.， Changsha 410012， China； 2. College of Civil Engineering， Hunan University， Changsha 410082， China）
Keywords:
water supply system;  carbon emission characteristics;  optimize design;  accounting method
Abstract:
From the perspective of process characterization of urban water supply system, this study conducted boundary analysis and developed a framework for carbon accounting. The primary form of carbon emission in water supply system was indirect emissions, with electricity consumption being the dominant carbon hotspot, followed by chemical consumption and material transportation. From the perspective of optimization design, the strategies for carbon reduction and carbon replacement were systematically summarized and refined. The key technical strategy for carbon reduction included demand reduction, system optimization, and energy efficiency improvements. Regarding carbon replacement, the main strategy involved technologies such as photovoltaic power generation and water source heat pump. A low-carbon design optimization was implemented using a newly built project as a case study. Analysis of the carbon accounting research indicated that low-carbon optimization during the design stage is a critical factor in achieving low-carbon operation for the waterworks. Adopting a refined design strategy maximized the input-output ratio of carbon reduction. By integrating carbon reduction and replacement technologies, the carbon reduction ratio of the waterworks in this case reached 39.7%, with a contribution rate of 61.94% for refined design, 17.41% for photovoltaic power generation technology, 17.65% for refined control, and 3% for water source heat pump technology. Furthermore, input-output analysis revealed an internal rate of return (IRR) of approximately 27% for the low-carbon design measures applied to this project.
Last Update: 2024-12-17