Routine maintenance of laboratory ultra-pure water machine First, let's briefly understand the ultra-pure water machine. Whether it is imported or domestic equipment, the principle is the same. The tap water is pretreated by a precision filter element and an activated carbon filter element to filter particles such as sediment and adsorption Odor, etc., make the tap water more clean, and then purify and desalinate the water quality through the reverse osmosis device. The purified water enters the storage tank and is stored. Its water quality can reach the national three-level water standard, and the wastewater produced by the reverse osmosis device (also known as "Concentrated water") drained. Reverse osmosis pure water passes through the purification column for deep desalination treatment to obtain first-grade water or ultra-pure water. Finally, if the user has special requirements, ultraviolet sterilization or microfiltration, ultra-filtration and other devices are added after the ultra-pure water to remove residual water Bacteria, particles, heat sources, etc. The precision filter element, activated carbon filter element, reverse osmosis membrane, and purification column are all materials with relative life. The precision filter element and activated carbon filter element actually protect the reverse osmosis membrane. If they fail, the load of the reverse osmosis membrane will increase and the life will be reduced. Short, if you continue to start, the quality of the pure water produced will decline, which will increase the burden on the purification column, and the life of the purification column will be shortened. The end result is to increase the use cost of ultrapure water machine. Therefore, in the use of ultra-pure water machine, there are the following things need to pay attention to. 1. Precision filter element Precision filter element, also known as filter element, is divided into wire-wound filter element and PP melt-blown filter element. It mainly filters large particles such as sediment in raw water. Its filtration accuracy is 5 microns, 1 micron, etc. The new filter element is white. If the surface is silted up for a long time, it will be brown, which means that the filter element can not be used. After the surface sludge is washed away with tap water, it can be used for 1-2 weeks, but it cannot be used for a long time. . The filter element is placed inside the filter bottle. Some filter bottles are transparent, and you can visually observe the color change of the filter element. Some filter bottles are opaque, and you need to unscrew them to observe the change of the filter element. From the empirical data statistics, the life of the precision filter element is generally from March to June. If there is more sediment in the raw water, the life will be shorter, and if the sediment is less, the life will be slightly longer. 5.Ultra-pure water machines that use tap water as the water source generally have two outlets, which are tertiary water and primary water. The water that comes out of reverse osmosis is tertiary water, which is stored in the water tank, and the primary water It is ready to use and not stored. The tertiary water does not pass through the purification column, and the primary water passes through the purification column. The cost of primary water is higher than that of tertiary water. Therefore, in daily application, customers should collect water according to water quality requirements. When using tertiary water, try not to use tertiary water as much as possible to avoid the increase of use cost. 3. Reverse osmosis membrane Reverse osmosis membrane is a very important part in ultrapure water machine, its pore size is very small, so in the process of use, bacteria and other microscopic substances are often deposited on its surface. Generally, pure water machines of various manufacturers have reverse The rinse function is designed to wash away contaminants. If the water consumption is within 10 liters / day, it can be washed 3-5 times, and if it exceeds 10 liters, it should be washed several times. If you do n’t use it for a long time (such as more than 1 month), you need to take it out and soak it in the disinfectant to avoid the growth of bacteria. However, this process is cumbersome. It is recommended to use a small amount of water to start Water forms a circulation and minimizes the settling time of dead water. The life of the reverse osmosis membrane is 2-3 years, which is mainly determined by the customer's water consumption, so users must choose the matching specifications when purchasing. 2. Activated carbon filter element Activated carbon filter element mainly removes odor and organic matter in water through adsorption. There is residual chlorine in tap water, which has a great oxidation effect on the reverse osmosis membrane, so it must be removed through activated carbon. There is no intuitive change in the surface of the activated carbon filter. According to experience, it usually reaches saturation adsorption in about one year and needs to be replaced. 4. Purification column Purification column is sometimes called ultra-purification column according to customer's water quality requirements. Its self-function is to perform deep desalination of reverse osmosis pure water and finally reach the level of first-grade water or ultra-pure water. The principle is ion exchange. The life of the purification column is represented by the resistivity online. Below a certain resistance means that the purification column has expired, which is more intuitive. In addition to the customer's water consumption, its life is particularly important for the filling amount of the ion exchange resin and the quality of the ion exchange resin during the production design of each manufacturer. 5.Ultra-pure water machines that use tap water as the water source generally have two outlets, which are tertiary water and primary water. The water that comes out of reverse osmosis is tertiary water, which is stored in the water tank, and the primary water It is ready to use and not stored. The tertiary water does not pass through the purification column, and the primary water passes through the purification column. The cost of primary water is higher than that of tertiary water. Therefore, in daily application, customers should collect water according to water quality requirements. When using tertiary water, try not to use tertiary water as much as possible to avoid the increase of use cost. Melamine Laminated Plywood,Melamine Plywood,Color Melamine Laminated Plywood,Wooden Grain Melamine Laminated Plywood Shandong Yami Import and Export Co., Ltd. , https://www.yamiplywood.com