Film era of water treatment

Film including the reverse osmosis membrane, nanofiltration membrane, the ion membrane, ultrafiltration membrane, the microporous membrane, he is up to the end of the 20th century, a kind of water treatment technology, membrane separation technology in the month is not well-known, the current industry on a small scale. But the 'twelfth five-year' period, China's handling of water will enter a new stage, and plays an important role in the field of water treatment of membrane separation technology is expected to usher in rapid growth. According to the separation membrane 'twelfth five-year' plan, China during the 'twelfth five-year' will increase its self-sufficiency rate of separation membrane, on a large scale in the area of separation membrane all form a complete mass production ability and realize the import substitution, including water treatment of the ultrafiltration and microfiltration membrane production capacity will reach 45 million ~ 50 million square meters; Electric membrane formed the annual production capacity of 1 million ~ 1. 3 million square meters.

China's water resources are increasingly scarce and industrialization is still in high-speed propulsion, how to alleviate the contradiction between resources and development has become a 'twelfth five-year' period in our country face a big problem. As one of way to solve, in areas such as water treatment, alkali industry has extensive applications in separation membrane will play a key role.

1, membrane water application in life

'China has 300 million people drink less than standard water, and 2012 will be the implementation of new standards in the most places are short of drinking water, we need to rely on the membrane treatment to amount to mark. 'It is understood that the latest will be imposed on July 1, 2012's' drinking water health standards '( GB5749- 2006). Will water index by the original standard relating to 35 to 106, and the original standard 35 indicators of eight was revised. By that standard, with the membrane to the drinking water depth treatment is the only way. In dongying, Beijing, wuxi, construction of the membrane water treatment water plant. At the end of last year, Beijing planning of 500000 tons/day waterworks already through the authentication, known as the world's largest scale.

2, membrane application in sewage treatment

'twelfth five-year' and 'much starker choices-and graver consequences-in' period in our country in waste water treatment will be up to 1, respectively. 1 and 05 trillion yuan. 39 trillion yuan, including industrial and urban sewage treatment investment will be 435. 5 billion yuan and 459 billion yuan respectively. Industry thinks, under the background of the policy, the separation membrane industry will usher in 'golden decade', strategic opportunities. In wastewater treatment, industrial water recycling, separation membranes has nowhere to go. ', according to Chen country in the future on some new big projects may not rationing water indicators, and require companies must use of municipal wastewater, this needs through a membrane to wastewater into reclaimed water can be used.

the membrane treatment engineering in the field of international wastewater reuse has accounted for more than 95% of the total, China film material has more than 90% is used for water treatment.

3, the application of membrane in seawater desalination

desalination is an important application field of separation membrane. After an internal meeting, the leadership has said, China will carry out a great battle in seawater desalination. Implementation of desalination methods including distillation, membrane method, ion exchange method, etc. Membrane technology for high efficiency, no phase change, less energy consumption, low operating cost advantages has become the first choice for seawater desalination technology. National Development and Reform Commission (NDRC) ring endowment department commissioner of water-saving Yang Shangbao said, according to incomplete statistics, at present our country has built desalination engineering capacity of 600000 tons/day, with 60% using membrane technology. Related to the 12th five-year plan desalination capacity up to 2. 2 million - is put forward 2. 6 million tons/day, means that the membrane technology have more leeway. Is expected to 'twelfth five-year' period will also be designed and built 200000 - 300000 cubic meters/day of reverse osmosis membrane water desalination system, new desalination capacity is 1 million - 1. 5 million cubic meters/day. As the desalination project scale and matured, using membrane to seawater desalination project proportion is expected to be further improved.

according to the planning, reverse osmosis membrane during the 12th five-year annual capacity will reach 10 million square meters, the share of domestic reverse osmosis membrane to rise to 25% 30%. And at present, the domestic reverse osmosis membrane can produce only 4 million square meters.

4, membrane in the chlor-alkali industry application equipment more than 38 million tons, the existing chlor-alkali industry in China is the world's first chlor-alkali production country. But before the domestic industrialization of ionic membrane, the ion used the core material of ionic membrane caustic soda 100% dependent on imports, become our country's basic industries chlor-alkali industry safe operation and healthy development of the bottleneck. In addition to water treatment, membrane separation and a variety of other applications, including useful material recycling, gas separation and hemodialysis, etc. 'Chen said. The perfluorinated ion exchange membrane as a kind of separation membrane, in chlor-alkali chemical industry ( 10. 34, 0. 29, 2. 89%) , new energy field has great application value.

according to the plan, during the period of 'twelfth five-year' perfluorinated ionic membrane used in domestic chlor-alkali industry to realize large-scale production, annual output can reach 200000 square meters, to the end of the 'twelfth five-year' to replace imported rate was 60%.

film is the core part of the water treatment, water treatment system in the future will be more and more applications and raise the quality and output of domestic membrane, we believe that the film era.