In fact, there is no saying which one is the best, first of all, first understand their raw water quality and their own needs, and then choose according to these. When choosing, you should pay attention to the membrane desalination rate, water flux, minimum operating pressure, operating temperature, feed water requirements and so on.
What are the brands of reverse osmosis membranes?
Foreign: Dow, Koch, Toray, Hydrogen.
Domestic: Tianjin membrane day.
Reverse osmosis membrane brand introduction:
Dow
Dow is a multifaceted chemical company, the use of science, technology, and the power of the "human element" of continuous improvement. 2010, Dow's annual sales of 53.7 billion U.S. dollars, with about 50,000 employees worldwide. In 2010, Dow had annual sales of $53.7 billion, employed approximately 50,000 people worldwide, operated 188 manufacturing sites in 35 countries, and had more than 5,000 products. The Dow Chemical Company was recognized by Business Insider as one of the top 10 global companies "saving the planet" for its development of FILMTEC reverse osmosis membrane technology and products.
Koch
Koch is a U.S. company registered in Colorado, USA. It specializes in the registered trademarks "KOCH" and "Koch". Koch's RO reverse osmosis membrane, NF nanofiltration membrane, UF hollow ultrafiltration membrane, rolled ultrafiltration membrane, microfiltration membrane membrane products such as research and development, has decades of experience in the manufacture and application of filter membranes, has truly become a well-known brand in the field of membrane separation with the most complete product chain. We are one of the largest suppliers of filter membranes.
TORAY
TORAY (TORAY) was founded in 1926, headquartered in Tokyo, Japan. The Toray Group is a world-renowned high-tech multinational enterprise with organic synthesis, polymer chemistry and biochemistry as its core technologies. Toray is one of the first companies in the world to engage in the development of reverse osmosis membrane technology, as early as the 1960s began the research of membrane technology, from the selection of raw materials, the development of membrane technology and the design of the membrane element structure, etc., for the development of this technology in the application of ultra-pure water, seawater desalination and other areas of water treatment has made excellent contributions.
HYDRANAUTICS
HYDRANAUTICS was founded in 1963, headquartered in Oceanside, California, USA, and incorporated into NITTO DENKO CORPORATION in 1987 as one of the wholly-owned subsidiaries of Nitto Denko Corporation in the United States. After 40 years of unremitting efforts, has become the world's most famous in the separation membrane manufacturing industry, the most specifications, the largest production scale, the most patented reverse osmosis and nanofiltration membrane manufacturers, but also the earliest U.S. reverse osmosis membrane manufacturers through the ISO9001 international certification.
Tianjin Membrane Sky
Tianjin Membrane Sky Membrane Science and Technology Co., Ltd. is a high-tech enterprise with a complete industrial chain of membrane product research and development, production, membrane equipment manufacturing, membrane application engineering design, construction and operation services, whose predecessor was the Membrane Separation Research Institute of the Tianjin Polytechnic University, established in 1974. The company has served municipal water supply and sewage treatment and reuse, industrial water supply and wastewater treatment and reuse, seawater desalination, drinking water purification, biopharmaceutical purification, concentration and separation processing and other fields.