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  • Membrane technology in the electronics industry manufacturing of pure water


  • 二、Second, the membrane technology in the manufacture of pure water
     Manufacturing of pure water membrane technology are electrodialysis (EDI), reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF), microfiltration (MF), it works with the traditional water treatment technologies Ratio, membrane technology has the process is simple, convenient operation, easy automation, energy consumption, pollution, removal of impurities, high efficiency, low cost operation, particularly with the use of several membrane technology, complemented by other water Treatment process, such as quartz sand filter, activated carbon adsorption, degassing, ion exchange, UV sterilization, for the removal of various impurities in the water to meet the growing electronics industry needs for ultra-pure water to provide an effective and reliable means , And only application of a variety of membrane technologies to produce qualified, stable and ultra-pure water to produce a large, very large scale, very large scale integrated circuit (LSI, VLSI, ULSI), so that the computer, radar, communications , Automatic control and other modern electronics industry development and application can be achieved. It is worth mentioning is this: When the salinity of the raw water is greater than 400mg / L, the water produced by RO-desalination process after the ion exchange process, than the previous ion-exchange alone can save acids, bases about 90%, so that Ion exchange column of water production cycle of about 10 times, it is proved to reduce the running costs of pure water and the cost of water can reduce labor intensity, you can reduce environmental pollution and water quality can be improved And long-term stability. According to statistics, China's electronic industry in the introduction of pure water production system, there are RO, about 90% of the total system, a UF of about 20%, with almost 100% MF, and EDI in our domestic water Early production system, especially the water system, and numerous less demanding of water quality in general electronic components (such as resistors, capacitors, black and white picture tubes, tubes, etc.) manufacturer of the water system a considerable proportion.
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