??? Activated carbon filter operation is done through the carbon bed. Consisting of activated carbon particles carbon bed has a lot of pores and a huge surface area, has a strong physical adsorption capacity. In addition, some oxygen-containing functional groups on the activated carbon non-crystalline portion of the surface, so to be effectively adsorbed by the activated carbon of organic pollutants in water of the carbon bed. This filter is a more commonly used water treatment equipment, water desalination systems as pre-treatment equipment, which can effectively guarantee the life of the equipment after the class, improve water quality, pollution prevention, in particular to prevent post-stage reverse osmosis membrane , ion exchange resin, etc. Oxygen free form I poisoning contamination. Activated carbon filters for water and organics, colloids and pigments, which are more obvious removal capacity. Activated carbon filters are mainly used to remove organic matter in water, odor, color, heavy metals, chlorine (CL2) and so on. As reverse osmosis, electrodialysis, ion exchange pretreatment. Activated carbon filter for these devices can play a very good protection. ??? The sorption characteristics of activated carbon, activated carbon is mainly used to remove pollutants in water, decolorization, filtration and purification of liquids, gases, but also for the purification of air, exhaust gas recycling (e.g., in the chemical industry for gas "benzene" of recycling), recycling and refining of precious metals (such as the absorption of gold). With the development of science, more and more widespread use of activated carbon, with the national attention on the ecological environment, the activated carbon has a growing role waving ??? use of activated carbon adsorption properties of activated carbon filters to remove liquids impurities in the liquid to be purified, the adsorption capacity is reflected in the following aspects: 1, can absorb water, organic matter, colloidal particles, microorganisms. 2, can be adsorbed chlorine, amino, bromo, iodo other non-metallic substances. 3, can be adsorbed metal ions, such as silver, arsenic, hairpin, hexavalent chromium, mercury, antimony, tin and other ions. 4, can effectively remove color and odor removal of the water source and the pharmaceutical industry, to extend the life of the exchange resins. ??