Working principle of activated carbon filter

　　Activated carbon filter is a filter that uses activated carbon to absorb impurities. Its working principle is to be treated liquid or gas through the filter filled with activated carbon, activated carbon material surface has a large number of micropores and pores, can absorb different molecular size and polarity of impurities, such as odor, color, chlorine, organic matter, etc. When the liquid or gas through the activated carbon filter, impurities will be adsorbed on the surface of the activated carbon, and the clean liquid or gas is released through the filter, to achieve the effect of filtration and purification.

　　Activated carbon filter is usually composed of multi-layer structure, the outer layer is coarse-grained activated carbon, the inner layer is fine-grained activated carbon, which can greatly increase the activated carbon contact area and adsorption effect. The adsorption effect of activated carbon will gradually weaken with the increase of use time, so the need to replace activated carbon regularly, in order to ensure the performance and effect of the filter.