2024年3月，国务院颁布《节约用水条例》，提出沿海地区应当积极开发利用海水资源。沿海或者海岛 淡水资源短缺地区新建、改建、扩建工业企业项目应当优先使用海水淡化水。具备条件的，可以将海水 淡化水作为市政新增供水以及应急备用水源。为此，我国沿海省市积极推进大型海水淡化工程建设和运 行，海水淡化规模持续扩大。 此后，国家发展改革委、自然资源部印发实施加强海岛海水淡化利用的政策文件，推动加快补齐海岛供 水短板。海水利用作为重要内容被列入国家发展改革委等五部委《关于加快发展节水产业的指导意 见》、自然资源部《关于高水平保护高效率利用自然资源推动生态产品价值实现的意见》等。 自然资源部海洋战略规划与经济司日前发布的《2024年全国海水利用报告》（以下简称《报告》）显 示，2024年，全国有海水淡化工程158个，工程规模达285.6万吨/日，比2023年增加33.3万吨/日。 海水利用主要包括海水淡化、海水直接利用和海水化学资源利用。 《报告》显示，2024年全国有万吨级及以上海水淡化工程61个，工程规模263万吨/日；千吨级及以上、 万吨级以下海水淡化工程48个，工程规模20万吨/日；千吨级以下海水淡化工程49个，工程 ...

2024年全国有海水淡化工程158个，工程规模285.6万吨/日。辽宁、山东、江苏、浙江、福建、广东年 海水冷却用水量超过百亿吨。 我国海水资源梯次多元化高效利用收到明显成效，截至目前，全国有海水淡化工程158个，沿海省市推 进大型海水淡化工程建设，为沿海电力、石化、钢铁等高耗水行业用水提供可靠水源保障。 自然资源部海洋战略规划与经济司18日发布《2024年全国海水利用报告》（下称《报告》）。《报告》 显示，2024年全国有海水淡化工程158个，工程规模285.6万吨/日，比2023年增加了33.3万吨/日。2024 年全国海水冷却用水量1883.36亿吨，比2023年增加29.57亿吨。辽宁、山东、江苏、浙江、福建、广东 年海水冷却用水量超过百亿吨。 天津、山东、江苏、浙江等沿海省市推进大型海水淡化工程建设，为沿海电力、石化、钢铁等高耗水行 业用水提供可靠水源保障；天津、河北、山东、福建等地开展海水提溴、提钾工艺技术装备研发与成果 转化，探索海水资源梯次多元化高效利用，提高资源利用效率。 海水利用主要包括海水淡化、海水直接利用和海水化学资源利用。2024年3月，国务院颁布的《节约用 水条例》提出"沿海地区应 ...

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]

Core Viewpoint - The article highlights the significant policy support for China's marine economy, which is expected to enter a new phase of growth, emphasizing innovation, high-quality development, and collaboration across various coastal provinces [1][2]. Group 1: Policy and Development Plans - The Central Financial Committee's recent meeting focused on advancing the marine economy's high-quality development, stressing innovation, efficient collaboration, and industry upgrades [1]. - Shanghai's marine industry development plan (2025-2035) aims to establish a marine industry development fund and create a world-class shipbuilding and marine engineering equipment cluster [1][9]. - Coastal provinces like Jiangsu, Zhejiang, Guangdong, Fujian, and Shandong are actively promoting policies and legislative measures to enhance marine economic development [1]. Group 2: Economic Performance and Projections - The marine production value in China surpassed 10 trillion yuan in 2024, reaching 10,543.8 billion yuan, with a year-on-year growth of 5.9%, outpacing the national GDP growth by 0.9 percentage points [4]. - The marine economy is projected to become a new engine for national economic growth, with significant potential for job creation and value addition by 2030 [3][2]. Group 3: Industry Structure and Trends - China's marine economy is characterized by a high proportion of traditional industries, with marine fisheries, coastal tourism, and marine transportation accounting for nearly 90% of the marine economy [5]. - Emerging marine industries, such as marine biomedicine and marine engineering equipment, currently represent less than 10% of the total, indicating a need for deep transformation and upgrading [5][6]. - The marine new industries' added value grew by 7.2% year-on-year, with marine manufacturing contributing over 30% to the marine production value [5]. Group 4: Regional Developments - Shanghai's marine production value reached 1,138.7 billion yuan in 2024, growing by 11.2% and accounting for 21.1% of the city's total production value [8]. - Zhejiang aims for over 220 billion yuan in marine economic project investments this year, with marine fisheries expected to exceed 100 billion yuan in output [9][10]. - Shandong is focusing on reform and innovation to enhance its marine economy, exploring new management models for marine resources and developing marine financial products [11].