China News Service, December 6th. The Ministry of Natural Resources released the "2020 National Seawater Utilization Report" (hereinafter referred to as the "Report") on its official website on the 6th.

The "Report" pointed out that as of the end of 2020, there were 135 seawater desalination projects nationwide, with a project scale of 1651083 tons per day, and a newly built seawater desalination project scale of 64,850 tons per day; the annual seawater cooling water consumption was 169.814 billion tons, an increase from 2019 21.201 billion tons.

  In terms of seawater desalination, as of the end of 2020, there are 135 seawater desalination projects nationwide, with a project scale of 1,610,083 tons per day.

Among them, 40 seawater desalination projects with a scale of 10,000 tons and above, with a scale of 1,452,448 tons/day; 50 seawater desalination projects with a scale of 1,000 tons and above and below 10,000 tons, with a scale of 188,894 tons/day; desalination projects with a scale of 1,000 tons and below 45 with a project scale of 9741 tons/day.

Image source: Ministry of Natural Resources website

  In 2020, there will be 14 new desalination projects nationwide, with a project scale of 64,850 tons per day, distributed in Hebei, Shandong, Jiangsu and Zhejiang. They are mainly used for industrial water use in coastal cities such as iron and steel, electric power, and metallurgy, as well as domestic water in island areas.

Image source: Ministry of Natural Resources website

  As of the end of 2020, the nationwide desalination projects are located in cities and islands in 9 coastal provinces and cities with severe water shortages.

Liaoning’s existing seawater desalination project scale is 114,811 tons/day, Tianjin’s existing seawater desalination project scale is 306,000 tons/day, Hebei’s existing seawater desalination project scale is 315,700 tons/day, Shandong’s existing seawater desalination project scale is 371,434 tons/day, Jiangsu now There are seawater desalination projects with a scale of 5,020 tons/day, Zhejiang’s existing seawater desalination projects with a scale of 413886 tons/day, Fujian’s existing seawater desalination projects with a scale of 26,600 tons/day, Guangdong’s existing seawater desalination projects with a scale of 86,771 tons/day, and Hainan’s existing seawater The scale of the desalination project is 10,861 tons per day.

Among them, the existing seawater desalination project scale in the island area is 398,471 tons per day.

Image source: Ministry of Natural Resources website

  The main use of desalinated water is industrial water and domestic water.

Among them, seawater desalination used for industrial water is mainly concentrated in high water-consuming industries such as electricity, petrochemical, and steel in the northern, eastern and southern marine economic circles of coastal areas; seawater desalination used for domestic water is mainly concentrated in island areas and northern marine economic circles. Tianjin and Qingdao are two coastal cities.

In 2020, the newly added seawater desalination project will be used for industrial water mainly to provide high-quality industrial water for high water-consuming enterprises such as Shougang Jingtang Iron and Steel Plant, Yantai Nanshan Aluminum Industry, Datang Dongying Power Plant; the newly added seawater desalination project is used for domestic water Mainly to provide reliable water supply for Zhoushan and Yantai water-scarce islands.

  In terms of direct use of seawater, in 2020, seawater cooling water consumption in coastal nuclear power, thermal power, steel, petrochemical and other industries will increase steadily.

According to estimates, the national seawater cooling water consumption in 2020 is 169.814 billion tons, an increase of 21.201 billion tons over 2019.

Image source: Ministry of Natural Resources website

  The 11 coastal provinces and cities of Liaoning, Tianjin, Hebei, Shandong, Jiangsu, Shanghai, Zhejiang, Fujian, Guangdong, Guangxi and Hainan all have seawater cooling projects.

In 2020, the annual seawater cooling water consumption in Liaoning, Shandong, Jiangsu, Zhejiang, Fujian, and Guangdong will exceed 10 billion tons, which are 13.914 billion tons, 12.309 billion tons, 11.233 billion tons, 33.374 billion tons, 24.924 billion tons, and 56.411 billion tons, respectively.

Image source: Ministry of Natural Resources website