全国燃煤发电用水量:中国的混合生命周期评估

IF 6.4 1区 地球科学 Q1 ENVIRONMENTAL SCIENCES
Jia-Hai Yuan , Ke-Xin Peng , Hui-Ming Xu , Chang-Hong Zhao , Hao-Nan Zhang
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引用次数: 0

摘要

以往对燃煤发电用水的研究可能忽略了供应链中部门间的影响。事实上,要在能源转型期间制定有效的节水战略,最重要的是分析供应链中各部门的用水结构和流量,并确定水资源短缺的根源。因此,我们基于电力行业拆分的环境扩展投入产出(EEIO)模型和生命周期评估(LCA)思想,从行业角度全面分析了燃煤发电与用水之间的关系。我们的研究结果揭示了燃煤发电用水结构的复杂性和多样性。生产技术本身决定了高强度的取水,而生产过程中部门间的密切联系,特别是与农业、建筑业和一些工业部门的联系,则形成了一个错综复杂的间接取水网和蓝色水足迹(WF)。此外,灰色水足迹主要来源于煤炭开采,并与第三产业间接相关,突出了水污染管理中需要关注的关键领域。最后,在各种转型战略下,预计燃煤发电行业的用水量在中短期内将保持在较高水平。在深入探讨燃煤发电与用水之间的关系之后,研究结果可为可持续能源发展和水资源管理提供新的视角和具体的切入点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
National water use of coal-fired power generation: Hybrid life cycle assessment in China
Previous studies of water use for coal-fired power generation may have overlooked inter-sectoral impacts in the supply chain. Indeed, to devise effective water conservation strategies during the ongoing energy transition, it is of utmost importance to analyze the sectoral water use structures and flows in the supply chain and identify the sources of water scarcity. Therefore, based on the power sector-split environmentally extended input‒output (EEIO) model and the life cycle assessment (LCA) idea, we comprehensively analyze the nexus between coal-fired power generation and water use from a sectoral perspective. Our findings reveal a complex and diverse water use structure in coal-fired power generation. The technology of production inherently determines the high intensity of water withdrawal, and the close intersectoral linkages, particularly with agriculture, construction, and some industrial sectors, in the production process result in an intricate web of indirect water withdrawal and blue water footprint (WF). Moreover, the grey WF, primarily sourced from coal mining and indirectly tied to tertiary industries, underscores critical areas for attention in water pollution management. Finally, water use in the coal-fired power sector is projected to remain at elevated levels in the short to medium term under various transition strategies. Following an in-depth exploration of the coal-fired power‒water use nexus, the findings can offer new perspectives and specific entry points for sustainable energy development and water resource management.
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来源期刊
Advances in Climate Change Research
Advances in Climate Change Research Earth and Planetary Sciences-Atmospheric Science
CiteScore
9.80
自引率
4.10%
发文量
424
审稿时长
107 days
期刊介绍: Advances in Climate Change Research publishes scientific research and analyses on climate change and the interactions of climate change with society. This journal encompasses basic science and economic, social, and policy research, including studies on mitigation and adaptation to climate change. Advances in Climate Change Research attempts to promote research in climate change and provide an impetus for the application of research achievements in numerous aspects, such as socioeconomic sustainable development, responses to the adaptation and mitigation of climate change, diplomatic negotiations of climate and environment policies, and the protection and exploitation of natural resources.
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