Application of Activated Carbon in Water Treatment

According to statistics, the annual industrial wastewater discharged from China is approximately 8×108m3, which contains not only highly toxic components such as cyanide but also metal ions such as chromium, zinc, and nickel. There are many waste water treatment methods, including chemical precipitation, electrolysis and membrane treatment. This article describes activated carbon adsorption. Activated carbon has a large surface area and high physical adsorption and chemical adsorption. Therefore, activated carbon adsorption is widely used in wastewater treatment. And it has high efficiency and good effect.
Activated carbon
Activated carbon is a special treatment of carbon, with numerous small pores, a large surface area, per gram of activated carbon surface area of ​​500-1500 square meters. Activated carbon has a strong physical adsorption and chemical adsorption function, but also has detoxification. Detoxification is the use of its huge area, the poison adsorbed in the pores of activated carbon, thus preventing the absorption of poisons. At the same time, activated carbon can be combined with a variety of chemicals to prevent the absorption of these substances.

Classification of activated carbon
There are many types of activated carbon used in production. Generally made into powder or granules.
Powdered activated carbon has a strong adsorption capacity, is easy to prepare, and has a low price, but it is difficult to regenerate and generally cannot be reused.
Granular activated carbon is more expensive, but it can be reused after being regenerated, and its working conditions are better when used, and its operation and management are convenient. Therefore, more granular activated carbon is used in water treatment [1].

Activated carbon adsorption
Activated carbon adsorption refers to the use of the solid surface of activated carbon to adsorb one or more substances in water to achieve the purpose of purifying water quality.