Thread Content
Under certain gas conditions, in coconut shell activated carbon that has been used for a long time, a decrease in the adsorption capacity of the activated carbon is occasionally seen. This is caused by any harmful substances that have a strong affinity for solvent recovery activated carbon, such as trace amounts of higher fatty acids, high boiling point esters, polymer substances, etc. in the original gas. At the same time, atmospheric pollution is also one of the reasons. Activated carbon adsorption is the most effective and mature advanced water treatment technology for removing organic pollutants in water on the basis of conventional treatment. Starting in the 1970s and 1980s, a small number of water plants adopted activated carbon adsorption advanced treatment technology. Coconut shell activated carbon is mostly used for in-depth treatment of water. The treatment method is generally activated carbon filter bed filtration. After a period of adsorption and saturation, the activated carbon is regenerated and reused. In larger equipment, activated carbon can be added using a dust-controlled dry addition system or a water-added carbon slurry. The dosage is controlled at 5~50mg/L. The use of powdered activated carbon is usually one-time. Although powdered carbon is cheap, if it consumes a lot, it must be recycled in consideration of economic benefits and environmental protection issues. The rapid development of industry has resulted in the generation of large amounts of sewage, and the efficient treatment and recycling of these sewage have received increasing attention. In industrial wastewater treatment, activated carbon can be used in primary, secondary and tertiary treatment processes. For industrial wastewater with complex pollution components, in most cases it is necessary to combine several treatment processes for treatment. Activated carbon for reclaimed water reuse is often used in the final deep treatment in the reclaimed water reuse process.