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Compared with traditional water treatment technology, membrane technology has the process is simple, convenient operation, easy control, low energy consumption, pollution, removal of impurities in high efficiency and low operating cost, especially in several kind of membrane technology used in conjunction with, and then supplemented by other treatment processes, such as quartz sand filter, Activated Carbon Adsorption, degassing, ion exchange, UV sterilization, etc., for the removal of all impurities, the electronics industry to meet the growing need for high water to provide an effective and reliable means, and only apply a variety of membrane technology, to produce qualified and stable high water, can produce large, very large scale, very large scale integration (LSI, VLSI, ULSI), which makes computers, radar, communications, automatic control and other modern electronics to achieve the development and application . It is worth mentioning is: when the raw water salinity is greater than 400mg / L, the pure water produced by RO-desalting process after the ion exchange process, than the previous single-use ion exchange savings of acid and alkali 90%, so Ion exchange column The cycle of water production increased by 10 times [7], it is proved to reduce operating costs and the pure water manufacturing cost of water can reduce labor intensity, can reduce environmental pollution and water quality can be improved and long-term stability. According to statistics, China's electronic industry into the pure water manufacturing system, there is RO for about 90% of the total system, with UF of about 20%, with almost 100% MF [8], and ED made in China of pure water production system, particularly the water system early, and numerous pairs of pure water do not ask the general electronic components (such as resistors, capacitors, black and white picture tubes, tubes, etc) factory occupies a relatively pure water system ratio. 3, microelectronics plant water use of membrane technology live station Are in a microelectronics plant in a water stop using membrane technology live shows industrial pure water membrane technology in the electronics manufacturing applications. The pure water manufacturing system flow shown in Figure 1. 1. The front UF UF is used to remove the former level of suspended matter in water, colloidal and organic matter, reduce water SDI, to ensure the safe operation of RO. UF before level 5 in each group 45 components, a total of 225 components, water 280m3 / h, through the water, 250m3 / h, concentrated water discharge rate of about 90%. UF components manufactured for the U.S. Romicon, model HF-BZ-20-PM80, component diameter 5in, long 43in, internal pressure type hollow fiber membrane, fiber diameter, 20mil (0.51mm), a total of 2940 fiber, membrane area 132ft2, membrane material for the PS (polysulfone), molecular weight cutoff 80 000. UF security before using 5 m Filter . 2. RO level Added to the water reducing agent Na2SO3 (the dosage is 1.8 times the value of residual chlorine in water) to prevent the chlorine oxidation corrosion RO membrane, adding scale inhibitor (NaPO3) 6 (dosage as 5ppm) to prevent CaCO3, CaSO4, etc. in the RO membrane fouling, and then by 5 m Security Filter After the high-pressure Pump Reached the level of RO. 1 RO 4 groups were . Three groups each of eight films for the container, were (5 +3) order, No. 4 for 11 film containers, were (8 +3) arrangement, the membrane containers by the FRP (GRP) made 6 of each interior a RO components, a total of 210 RO components, water 250m3 / h, through water, 188m3 / h, concentrated water discharge rate was 75%, desalination rate of> 90% (initial desalination rate of> 99%), operation pressure 1.55Mpa. RO components for the U.S. HYDRANAUTICS (Hydranautics) company, model CPA3. Element diameter 8in, long 40in, roll film, membrane area 400ft2, membrane materials for the aromatic polyamide composite membrane, components desalination rate 99.5%. 3. 2 RO An RO Water tank A part of the effluent into the system, first add NaOH (CP grade) adjust pH to 8.2-8.6, so that the water generated CO2 HCO3-, second RO to be removed to reduce the burden of mixed bed ion exchange, RO can make use of two mixed extend the double bed regeneration cycle, to reduce acid consumption of renewable and further removal of TOC and colloidal substances. 2 RO pre-filters with 3 m security, two RO for a group of three sections, a total of 10 film containers, according to (6 +3 +1) arrangement, contents of each container 6 RO elements, a total of 60 RO components water 70m3 / h, water 62m3 / h, concentrated to the ultrafiltration of water row Water tank Recovery of 90%, the desalting rate> 70% (initial desalination rate> 80%), RO components manufacturing plant, the same model with a RO. 4. After the UF class UF after the class is used to remove water particles, microorganisms, colloids, organic matter and other end-filtering equipment. A system level after the UF for the 3 groups, 18, a total of 54 components, water 92m3 / h, water 90m3 / h, concentrated to a row of RO water tank, the recovery of about 98 %. UF components manufactured for the U.S. Romicon, model HF-132-20-PM10, component diameter 5in, length 43in, internal pressure hollow fiber membrane, fiber diameter, 20mil (0.51mm), a total of 2940 fibers, film area 132ft2, membrane material for PS (polysulfone), MWCO 10 000. B grade after the UF system for the 8 groups of 9, a total of 72 components, water 168m3 / h, water 164m3 / h, the recovery of about 98%, UF module manufacturer and model A system-level post with the same UF. C level after the UF system has three components, water 4m3 / h, water 3.9m3 / h, the recovery of about 98%, UF YDRANAUTICS produce components for the U.S., model 4040-FTV-2120, Component diameter 3.94in, length 40in, roll film, membrane area 55ft2, membrane materials for the polyolefin, MWCO 50 000. 5. Microfiltration Microfiltration of this system can be divided into three categories, first for the former grade UF, RO before the security filter for removing the water of suspended particulate matter, reduce water SDI values Filter For the PP (polypropylene) membrane folding-type filter, pore size of 5 m or 3 m. Second after the ion exchange for the filter Ion exchange resins Debris, filter for the PP membrane fold-type filter, pore size of 1 m. The third category after the UV disinfection device for filtering microorganisms body, filter for the N-6 (nylon 6), fold-filter membrane pore size of 0.45 m or 0.2 m. Institute of Nuclear Industry eighth over all filter production. Click to enter topic>>> Reform and opening up this year is the 30th year of the past 30 years, China's economic development has made enormous leaps. HC as the water industry, water industry network of authoritative media, especially for your well-planned water industry topic of great change for 30 years, through the interpretation of water conservancy construction, public drinking water, water treatment and other aspects of the development process The e-commerce company in China offers quality products such as China fiber optic cables connectors , lc fiber connectors, and more. For more , please visit fiber optic connector today!
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