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The application of coconut shell activated carbon in water dispensers. Coconut shell activated carbon is very common in our lives, as it contains a large number of micropores and has a high specific surface area; it can effectively remove colors and odors, as well as most organic pollutants and certain inorganic substances from the wastewater. It contains certain toxic heavy metals. Therefore, it is widely used in the water purification industry, especially in the energy-saving water dispenser sector. Coconut shell activated carbon filters are generally made from high-quality shell charcoal, along with food-grade adhesives, through a special manufacturing process. It combines adsorption, filtration, retention, and catalysis in one. It can effectively remove organic substances, residual chlorine, and other radioactive materials from water, and has the effects of decolorization and deodorization. It is mainly used to remove color and odor from water, eliminate residual chlorine, improve taste, and can also be used in reverse osmosis membranes to provide a certain level of protection. Coconut shell activated carbon filters mainly come in granular or compressed forms. A granular filter element is essentially composed of granular activated carbon filled in a specific frame. It has a simple composition and low cost, but is prone to carbon leakage, and its service life and performance are not very stable. The coconut shell activated carbon filter element is compressed, and its features are as follows: 1. It has excellent capabilities for removing chlorine, odors, and organic compounds. Coconut shell carbon filters have a good filtering effect on trihalomethanes (THMs). 2. It combines adsorption, filtration, retention, and catalysis in one; it is effective against acids, bases, and various organic solutions, and possesses a stronger filtering capacity than granular activated carbon. More thorough removal of impurities makes granular activated carbon an ideal new alternative. 3. Special non-woven fabric is used to wrap the carbon rod from the inside and outside; the porous surface of the high-density carbon layer **improves its ability to absorb pollutants and extends its service life. 4. Remove harmful pollutants commonly present in water, such as spores, asbestos, lead, and microorganisms. In summary, coconut shell activated carbon filters possess excellent performance and can be widely applied in industries such as semiconductors, electronic devices, printed circuit boards, and electroplating. Due to its ability to effectively filter impurities from water, it has been incorporated into our drinking water systems, making the water used in people’s daily lives safer.