《2024年全国海水利用报告》发布：去年全国海水冷却用水量1883.36亿吨

Core Insights - The Ministry of Natural Resources has released the "2024 National Seawater Utilization Report," highlighting significant developments in seawater desalination and cooling water usage in China [1] Desalination Developments - In 2024, there are 158 existing seawater desalination projects in China, with a total capacity of 2.856 million tons per day, an increase of 333,000 tons per day compared to 2023 [1] - Coastal provinces such as Tianjin, Shandong, Jiangsu, and Zhejiang are actively advancing large-scale seawater desalination projects to ensure reliable water supply for high-water-consuming industries like power, petrochemicals, and steel [1] - Breakthroughs have been made in domestically developed seawater desalination equipment, with the fifth production line of the Tianjin Nangang Industrial Zone's integrated seawater desalination and comprehensive utilization project achieving full localization of key equipment such as reverse osmosis membranes, high-pressure pumps, and energy recovery devices [1] Cooling Water Usage - The total seawater cooling water usage in 2024 is projected to be 188.336 billion tons, an increase of 2.957 billion tons from 2023 [1] - Provinces including Liaoning, Shandong, Jiangsu, Zhejiang, Fujian, and Guangdong have annual seawater cooling water usage exceeding 10 billion tons [1] - Regions such as Tianjin, Hebei, Shandong, and Fujian are actively developing and transforming technologies for seawater extraction of bromine and potassium, exploring efficient and diversified utilization of seawater resources to enhance resource efficiency [1]