Head Ratchet

Head Ratchet

China Bohai sea ice desalination technology will enable a "bowl of fresh water"

4 8 Xinhua China 10 years of research and development of sea ice desalination technology, is expected to make the Bohai Sea as a precious "water bowl."

National Marine Environment Laboratory of Marine Environment Monitoring Center director Chen Weibin dynamic told Xinhua that the use of desalination technology independently developed in China, can make the Bohai Sea ice often occur "change disaster for the treasure", a rare freshwater pool.

He said that after nearly 10 years of efforts, China has carried out studies of sea ice desalination technology has made significant breakthroughs, and living in the world leading level.

Xi Jinping will attend the opening ceremony of the Boao Forum for Asia, eight ministries and commissions issued to promote the views of 3G network attached shares of property madness has spread from the city line predicament China equity funds involved repeat users suspended deputy head of beautiful women exposed only after 80 6 years Expo Hall 8 national treasures exhibition in China (Photo) "This means that China Bohai Rim is expected to be a huge 'water bowl', to alleviate the shortage of fresh water in the region." Wai-Bun Chan said.

Bohai Sea area of 77,000 square kilometers, with an average depth of 18 meters. Liaoning, Hebei, Shandong and Tianjin Bohai Rim is composed of north China's most important economic zone. The last 20 years, due to rapid economic growth, rapid population increase, shortage of freshwater resources in the region has become a serious obstacle to socio-economic sustainable development.

According to researchers estimated that sea ice in the Bohai Sea region a normal year saved an average extraction of 100 million cubic meters. Sea ice has been mined will be re-growth, if the average annual growth of 4 to 5 times calculated, the amount of its available resources even more impressive.

Desalination of sea ice in 1995 by the Vice President of Beijing Normal University, Shi Peijun, who put forward a new concept, is the world's first. 2000 years ago, the sea ice desalination research as an exploratory research project embarked on a stage in China.

2001 years, the national "863 Project", supported by Beijing Normal University, National Marine Environment Monitoring Center, Tianjin University and other units relevant to explore joint research and made important progress.

Wai-Bun Chan said that in normal circumstances, the Bohai Sea water salinity at 32 , whereas the natural freezing in the winter, the salinity of sea ice fell to between 6 -8 , the minimum up 4 , without any means the majority of salt can be automatically removed, and the remaining salt can be resolved technically.

Project task force under the micro-structural characteristics of sea ice, sea ice solid play down the capture of the key technologies of the self-developed centrifugal desalting of sea ice machine, ice freezing temperature desalination plant, desalination plant gravity of sea ice, sea ice melt water reverse osmosis desalination plants, completed the acquisition from the sea ice, transported to the desalination, storage, process integrity, access to the sea ice salinity of 2 less fresh water, the water quality of water sources meet the national standard.

Gu Wei of Beijing Normal University professor, said: "sea ice desalination as

Desalination And important part of the branch, has its own unique advantages. "

Ice ice and liquid water from the solid salt brine composed of cells. Desalination of sea ice is actually water ice and salt brine to achieve cell separation process. Through research, the researchers according to the internal structure of sea ice, he proposed microwave method, mixing, extrusion method, gravity method, centrifugation and other six kinds of sea ice desalination.

By trial and error, experts believe that under current technology and capability, can be used for large-scale sea-ice light

Chemical industry Desalination process is gravity desalination of sea ice and sea ice desalination centrifugal method. Development of desalination of sea ice present centrifugal device can handle 5 tons of ice per hour, after desalination of sea ice salinity is about 1.5 .

Gu Wei said that at present, sea ice desalination technology has entered the industrialization of the early development of key equipment and comprehensive test phase, the cost of desalination of sea ice has dropped to about 5 yuan per cubic meter, it shows the sea ice as water resources the feasibility of industrial development and utilization. With the future expansion of the scale and technology matures, the cost may be lower.
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