Membrane water treatment applications is very extensive. First, because the improvement of emission standards, the seriousness of the Government to implement these standards of improvement and expansion of market demand for recycled water, MBR Membrane Bio-Reactor in the field of wastewater treatment must have a good market. Secondly, in the pure water production, the manufacture of water, drinking water filtration areas such as ultrafiltration and microfiltration membrane products have a very wide space. Academician Li Guibai back in a few years ago has been pointed out that the third generation of membrane technology is the core of water-purification process.

Although the membrane water treatment market potential is very large, but the technology has not yet become the dominant technology in water treatment, so I say that it represents the future of the light industry. The light should shine on the earth should also break down the three major bottleneck, first quality, second is cost, the third is the applicability. These three bottlenecks must be completely breakthrough in membrane technology in order to have sustainable and more large-scale development.

Film products in the quality of the biggest problem is the film fracture problem, especially when the film was to provide a safe drinking water barrier, the membrane rupture is a fatal problem. Another filtration precision is also an important indicator of quality. Even if the film is currently high-priced imported products, in the mechanical strength and filtration accuracy of the two most important indicators still have great room for improvement. Therefore, we can say the quality of film is the first large-scale film market a bottleneck. Our composite heat-induced phase method to bring a substantial increase in intensity and filter will help us to improve the accuracy of the first break through this bottleneck.

At present in sewage treatment plants, recycling water and water plants have been used although the film, but the main application is the European, American and Japanese products more expensive membranes. Thus, only in the special developed regions, as well as political significance of the number of items applied. In the market economy conditions, those elements of cost accounting as a major business decisions of the enterprises is rarely used. We have already seen the film applied to expand the scope of a big breakthrough is to reduce the film's production costs. To reduce costs, however, can not be easy to simplify processes and the use of low-quality materials (commonly known as jerry-building) to achieve. Break the bottleneck of quality and price the only way is through technological innovation to achieve quality and cheap. Therefore, the composite thermal-induced phase method of production PVDF film has a bright future - higher quality, more reasonable prices and a larger market.