Reverse osmosis device is compact, simple installation, easy to operate, low energy consumption, operating at room temperature, easy to industrialize production.
Composite membrane invented in the 80's, by the ultra-thin reverse osmosis membrane, porous support layer, fabric reinforced from the superposition, water permeability is great, desalination rate of up to 99%, is the ideal reverse osmosis membrane. Reverse osmosis membrane in the separation of small molecules of organic compounds is also particularly effective, so the organic chemical industry, brewing industry, three waste treatment and other fields have also been well used.
Before the 21st century, reverse osmosis membrane technology is monopolized by foreign countries, and China is not until the late 90's began to master the production of reverse osmosis membrane technology. The history goes back to the early days of the founding of the country, when our country's leaders were already aware of the prospects of desalination and its future role in society.
As early as 1958, Shisong researcher and other first in China to carry out ion exchange membrane electrodialysis seawater desalination research. And before that in 1953 the U.S. C.E. Reid suggested the U.S. Department of the Interior to include reverse osmosis research in the national program.
Subsequently, in 1967, the State Science and Technology Commission organized the national desalination war, the organization of the country in water treatment and analytical chemistry, materials chemistry, fluid mechanics and other disciplines of the elite will fight desalination.
In 1970, the main battle gathered in Hangzhou, Zhejiang Province, China, organized the country's first desalination research laboratory. During this period, they have been using electrodialysis technology for seawater desalination, developed a successful marine monitoring special microporous filter membrane, built the world's largest electrodialysis seawater desalination station - Xisha Yongxing Island seawater desalination station. Once in the desalination of seawater to become a world leader.
In 1982, the Chinese Society of Desalination and Water Reuse was founded in Hangzhou with the approval of the Society Department of the Chinese Association for Science and Technology. However, because of the experience of a decade of catastrophe, after all, or weakened, at this time, far across the ocean, the United States of America's all-aromatic polyamide composite membranes and their rolled components have been herculean.
In 1984, the State Oceanic Administration to desalination research laboratory as the main body, the formation of the State Oceanic Administration Hangzhou Water Treatment Technology Research and Development Center, China began to pay attention to the membrane technology, but the United States desalination with composite membranes and their rolled components have been commercialized on a large scale, and put it into the country and civil use.
In 1992, the country in order to catch up with the gap between the membrane technology and the world, the State Science and Technology Commission of the top of the military to "center" as the basis for the formation of the National Liquid Separation Membrane Engineering and Technology Research Center, and began to quietly develop domestic reverse osmosis membrane.
Until 2001, the "center" to implement group management, under the jurisdiction of the three controlling Sino-foreign joint venture, two Chinese companies and a research and development center.
The same year, Hangzhou Beidouxing Membrane Products Co., Ltd. was formally launched publicly, from then on, China has its own reverse osmosis membrane products, enjoy complete independent intellectual property rights, made in China, with a national brand of high-performance composite membrane elements began to put on the market, China has become the world's fourth mastery of the independent reverse osmosis membrane technology countries. Hangzhou water treatment under the Hangzhou Beidouxing Membrane Products Co., Ltd. has become one of the world's eight independent reverse osmosis membrane manufacturers ...