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我国海水利用规模扩大
Jing Ji Ri Bao· 2025-07-24 21:57
Core Insights - The 2024 National Sea Water Utilization Report indicates a significant increase in seawater desalination projects and capacity across China, with a total of 158 projects and a capacity of 2.856 million tons per day, an increase of 333,000 tons per day from 2023 [1] Group 1: Desalination Projects - In 2024, there are 61 large-scale seawater desalination projects with a capacity of 2.63 million tons per day, 48 medium-scale projects with a capacity of 200,000 tons per day, and 49 small-scale projects with a capacity of 14,000 tons per day [1] - Major coastal provinces such as Tianjin, Hebei, Shandong, and Zhejiang have significant desalination capacities, with Tianjin at 450,000 tons per day and Shandong at 860,000 tons per day [1] Group 2: Industrial Water Use - Seawater desalination primarily serves industrial water needs, especially in high-water-consumption industries like power generation, petrochemicals, and steel, with some use for domestic water in coastal cities and islands [2] - Large-scale projects like the Tianjin South Port Industrial Zone and the Yantai Longkou Yulong Island desalination project are set to provide crucial water resources for industrial development [2] Group 3: Cooling Water and Chemical Resource Utilization - In 2024, seawater cooling water usage is projected to reach 188.336 billion tons, an increase of 2.957 billion tons from 2023, with significant usage in coastal thermal and nuclear power plants [3] - The report highlights ongoing research and development in seawater resource utilization, including bromine and potassium extraction technologies, particularly in provinces like Tianjin and Shandong [3]