Introduction to ultra-pure water equipment in the optoelectronics industry

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　　In the optoelectronics industry, the pretreatment section, the reverse osmosis main unit section, and the post-treatment section are the main components of ultra-pure water equipment. Ultra-pure water equipment removes almost all conductive substances from the raw water, and even reduces undissociated colloidal substances, gases, and organic compounds to very low levels. 　　Principle of ultra-pure water equipment in the optoelectronics industry: The exchange reaction takes place in the pure chemistry chamber of the module, where anion exchange resins use hydroxide ions to exchange anions in dissolved salts (such as chloride ions Cl) for hydrogen ions. Correspondingly, cation exchange resins use their hydrogen ions (H) to exchange the cations (such as Na) in dissolved salts. 　　A direct current electric field is applied between the anode (+) and cathode (-) located at both ends of the module. The potential causes the ions exchanged onto the resin to migrate along the surface of the resin particles and pass through the membrane into the concentrated water chamber. The anode attracts negative ions (such as OH and Cl). These ions pass through the anion membrane into the adjacent concentrated stream, but are blocked by the cation-selective membrane, thus remaining in the concentrated stream. The cathode attracts cations (such as H, Na) in pure water flow. These ions pass through the cation-selective membrane and enter the adjacent concentrated stream, but they are blocked by the anion membrane and thus remain in the concentrated stream. 【Laitread Shanghai Water Treatment Equipment Company www.shanghaishui.com】 Features of ultra-pure water equipment for the optoelectronics industry: 1. High degree of automation; it shuts down automatically in case of a fault, and has an automatic protection function. 　　2. The membrane module is made by rolling composite membranes, resulting in a higher solute separation efficiency and flux rate. 　　3. Low energy consumption, high water utilization rate, and low operating costs. 　　4. It has a reasonable structure and occupies little space. 　　5. An advanced membrane protection system that, when the equipment is turned off, allows the desalinated water to automatically wash away contaminants from the membrane surface, thereby extending its lifespan. 　　6. The system has no vulnerable components, requires little maintenance, and remains effective over a long period of time. 　　7. The equipment is designed with a scale prevention system for the membrane cleaning system. 　　I hope we can learn from each other, discuss together, and make progress as a group.