Activated carbon is a high specific surface area and pore structure of carbon. According to their raw materials can be divided into coal activated carbon, wood charcoal, carbon shell and bone charcoal; According to its form can be divided into cylindrical carbon, broken charcoal, activated carbon of carbon powder and fiber. The main raw material for activated carbon coal, wood, shells and other carbon-rich organic material, formed by activation with adsorptive complex pore structure. Pore RADIUS is greater than 20000nm in Gran via, between the 150-20000nm hole in, less than 150nm microporous. Mainly occur in these gaps and activated carbon adsorption on the surface, hole wall of large molecules of activated carbon can have a powerful gravitational water and impurities in the air to attract to the pores.
Activated carbon can be used in air purification and water supply, waste water treatment, used to separate or to collect the impurities in the air and water. Granular activated carbon and powdered carbon are the same, and can be used for water treatment. Loss of carbon particles easily, can be recycled reused, for the less contaminated, required continuous operation of the water treatment process. Powdered charcoal is not easy to recycle, generally disposable, used for the seriously polluted water treatment processes. Activated carbon water treatment material microporous and mesoporous developed, shall comply with the following three requirements: adsorption capacity, rapid adsorption, the mechanical intensity is good. Powdered activated carbon addition with these characteristics, particle size smaller absorption better.
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