Activated Carbon Adsorption in Water Treatment

Activated carbon has different forms, and currently it is still mainly in granular form and powder form in water treatment. Powdered carbon is used for intermittent adsorption, that is, according to a certain proportion, powdered carbon is added to the water to be treated, mixed evenly,  the carbon and water are separated by sedimentation or filtration. This method is also called static adsorption. Granular carbon is used for continuous adsorption. The treated water passes through the carbon adsorption bed to purify the water. This method is exactly the same as the fixed bed in form, also known as dynamic adsorption.




Practice has proved that activated carbon is an ideal adsorbent for water and wastewater treatment. At present, it is mostly used for tertiary wastewater treatment and deodorization of water supply. In the early 1960s, European and American countries began to use activated carbon adsorption as an effective method for water purification. China has used activated carbon for carbon disulfide wastewater treatment in the 1960s. Since the early 1970s, granular activated carbon has developed rapidly in terms of technology, application range and treatment scale for industrial wastewater treatment. The treatment of oil refining wastewater, explosive wastewater, printing and dyeing wastewater, chemical wastewater, and electroplating wastewater has been applied on a large scale in production, and satisfactory results have been achieved.

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