School of Public Administration, Yanshan University, Qinhuangdao, 066004, PR China.
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, PR China; School of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, PR China.
J Environ Manage. 2024 Oct;369:122244. doi: 10.1016/j.jenvman.2024.122244. Epub 2024 Sep 5.
Wind power has become an essential direction for transforming energy structures in energy-intensive seawater desalination under the dual goals of carbon peaking and carbon neutrality. In this study, the energy footprint of the case project is analyzed by combining the hybrid life cycle analysis and environmentally extended input-output modeling, which is compared with the traditional thermal desalination processes from the whole life cycle perspective. The analysis revealed that the total energy consumption of the seawater desalination driven by wind power generation can be reduced by 79.77% compared with the traditional thermal drive mode under the same water production scale. Although the energy consumption in the construction phase accounts for 24.97% of the total, the energy consumption per unit of water production can be reduced by about 80% after adopting wind power technologies. The payback period is 7.2 years, that is, the energy consumption can be balanced after around 7 years during the operation phase. The results showed that the wind-driven seawater desalination system can significantly decrease the energy consumption of the project, which attempts to provide implications for the upgrading of energy-intensive seawater desalination in coastal areas towards low-carbon transition.
在碳达峰和碳中和的双重目标下，风力发电已成为高耗能海水淡化能源结构转型的重要方向。本研究通过混合生命周期分析和环境扩展投入产出模型，结合案例项目的能源足迹分析，从全生命周期的角度与传统热淡化工艺进行了比较。分析表明，在相同的产水规模下，与传统的热力驱动模式相比，风力发电驱动的海水淡化总能耗可降低 79.77%。尽管在建设阶段的能源消耗占总能源消耗的 24.97%，但采用风力发电技术后，单位产水的能源消耗可减少约 80%。投资回收期为 7.2 年，即运行阶段约 7 年后，能源消耗可达到平衡。结果表明，风力驱动海水淡化系统可显著降低项目的能源消耗，这为沿海地区高耗能海水淡化向低碳转型提供了启示。
