Activated carbon filters mainly use activated carbon organic flocculants with high carbon content, large molecular weight and large specific surface area to physically adsorb impurities in water to meet the water quality requirements. When the water flows through the pores of activated carbon, various suspended particles, organic matter, etc. are adsorbed in the activated carbon pores under the action of Van der Huali; at the same time, chlorine (hypochlorous acid) adsorbed on the surface carbon surface chemically occurs Reaction, reduced to chlorine ions Therefore, chlorine is effectively removed, and the residual chlorine amount of effluent is less than 0.1ppm, and the operating conditions of the RO membrane are met. The performance characteristics of activated carbon filter box include: adsorption, strong ability; can treat a variety of mixed organic waste gases at the same time; compact equipment structure, small footprint, simple maintenance and management, low operating cost; automatic control operation design, easy and safe to operate; fully enclosed type, can be used indoors and outdoors.