| Statistics show that the annual discharge of industrial wastewater in China is about 8�108 m3, which not only contains highly toxic components such as cyanide, but also contains chromium, zinc, nickel and other metal ions. Next, we introduce the activated carbon adsorption method for you. The surface area of activated carbon is huge and has high physical and chemical adsorption functions. So activated carbon adsorption method is widely used in wastewater treatment, and has the characteristics of high efficiency and good effect.
Activated carbon is a specially treated carbon with numerous fine pores and huge surface area, with a surface area of 500-1500 square meters per gram of activated carbon. Activated carbon has strong physical and chemical adsorption functions, but also has detoxification. The detoxification effect is to use its huge area to adsorb poison in the micropores of activated carbon, thus preventing the absorption of poison. At the same time, activated carbon can bind to a variety of chemicals, thus preventing the absorption of these substances.
The adsorption capacity of activated carbon is related to the pore size and structure of activated carbon. Generally speaking, the smaller the particles, the faster the pore diffusion rate, the stronger the adsorption capacity of activated carbon. Because of the high requirement of water pretreatment and the high price of activated carbon, activated carbon is mainly used to remove trace pollutants in wastewater in order to achieve the purpose of deep purification. |
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