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Quantifying the “Water–Carbon–Sulfur” Nexus for Coal Power Plants in China

Author

Listed:
  • Xin Liu

    (School of Environment and Energy, Peking University Shenzhen Graduate School, University Town, Shenzhen 518055, China)

  • Yiran Wei

    (School of Environment and Energy, Peking University Shenzhen Graduate School, University Town, Shenzhen 518055, China)

  • Junping Ji

    (School of Economics and Management, Harbin Institute of Technology, Shenzhen 518055, China)

Abstract

China has implemented strict policies for the installation of desulfurization facilities in coal power plants in order to mitigate their negative environmental and human health impacts. However, it is rarely acknowledged that desulfurization processes lead to increased water consumption and carbon emissions from the coal power sector. By using a bottom-up approach, we quantified that the desulfurization facilities in all of China’s coal power plants together avoided emissions of 29.52 Mt of SO 2 in 2014, with expenses of 550.26 million m 3 of increased water consumption, and 53.28 Mt of additional CO 2 emissions. Such conflicts were especially pronounced in the North China Grid, where 9.77 Mt of SO 2 emission reductions were realized at expenses of 132.15 million m 3 of water consumption, and 14.25 Mt of CO 2 emissions. The provinces in the North China Grid were already facing extreme water scarcity. Furthermore, while more than 90% of China’s coal power plants have installed desulfurization facilities, the application of full desulfurization would further reduce the greatest amount of SO 2 emissions with the smallest amounts of additional water consumption and carbon emissions in the Northwest Grid. Replacing all wet desulfurization facilities with dry ones saves 498.38 million m 3 of water consumption in total, and reduces 26.65 Mt of CO 2 emissions; however, this is at an expense of 14.33 Mt of SO 2 emissions. These conflicts are most pronounced in Shanxi Province in the North Grid, and in Guangdong Province in the South Grid.

Suggested Citation

  • Xin Liu & Yiran Wei & Junping Ji, 2022. "Quantifying the “Water–Carbon–Sulfur” Nexus for Coal Power Plants in China," Sustainability, MDPI, vol. 14(6), pages 1-10, March.
  • Handle: RePEc:gam:jsusta:v:14:y:2022:i:6:p:3675-:d:776026
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    References listed on IDEAS

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    1. Ling Tang & Jiabao Qu & Zhifu Mi & Xin Bo & Xiangyu Chang & Laura Diaz Anadon & Shouyang Wang & Xiaoda Xue & Shibei Li & Xin Wang & Xiaohong Zhao, 2019. "Substantial emission reductions from Chinese power plants after the introduction of ultra-low emissions standards," Nature Energy, Nature, vol. 4(11), pages 929-938, November.
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