Depending on a variety of raw water quality and user requirements, preparation of ultra-pure water can be divided into pre-ultrapure water, desalination and finishing a three-step process. --EDI 1 ultra-pure water equipment, pretreatment including sand filters, multi-media filtration, softening, chlorine, adjusting pH, activated carbon filtration, degassing. 2, including electrodialysis desalination, reverse osmosis, ion exchange. Electrodialysis principle is the use of cations and anions in the external electric field effect on the ion-exchange membrane selective Yunnan through EDI ultra-pure water equipment supply, desalination rate of 95%. Reverse osmosis is a pressure applied to the concentrated solution, the solvent from the concentrated solution through a semipermeable membrane on one side to a dilute solution side of the reverse osmosis desalination up to 98%, and 99% of the bacteria can remove particles and organic matter dissolved in water . Ion exchange principle is that when water is passed through a cation exchange resin, cation exchange resin is water Yunnan EDI ultra-pure water equipment prices cation resin exchangeable cations such as H ions are replaced into the water, and the water and the anion binding to Yunnan EDI ultra-pure water equipment manufacturers, the corresponding mineral acid. This water containing inorganic acid, when the next exchange resin layer by anion, the water is an anion exchange resin. - EDI ultra-pure water equipment 3, the polishing resin exchangeable anions such as OH ions are replaced into the water, combined with water H ions into the water, that ultrapure water polishing includes ultraviolet disinfection, membrane filtration and ultra terminal filter. The difference between ultra-pure water and pure water - EDI ultra-pure water equipment water removal is easy to remove, ferroelectric, turn the water is difficult to remove the silicon OKP ultra-pure water and carbon dioxide and other weak acid electrolyte removed to a certain degree of water . Salinity of the water in the 1.0mg / L or less Yunnan EDI ultra-pure water equipment, conductivity of less than 50μs / cm. High water refers to the water conducting media almost completely removed, colloidal substances, gases and organic matter in water in turn are separated from the solution to the low level of water removal. High water salinity in 0. 3mg / L or less, conductivity of less than 0.2μs / cm. Ultra-pure water before ultrapure water is very pure water. The semiconductor integrated circuit industry for raw materials and the use of clean utensils, lithography reticle preparation of silicon oxide and water vapor source used and the like. In addition, other solid-state electronic devices, thick and thin film circuits, printed circuits, tubes, etc. should also make use of ultra-pure water. - EDI ultra-pure water equipment EDI equipment in Yunnan, Yunnan EDI equipment purchase, Guangzhou Tianshui (certified merchants) are provided by the Guangzhou Environmental Protection Technology Co., Ltd. Tianshui. Tianshui Guangzhou Environmental Protection Technology Co., Ltd. (jintianshui2.1688.com/) is specialized in "water machine RO pumps, large and small water treatment equipment, water machine water equipment parts" of the enterprise, the company adhering to the "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Gan army.