Landfill is a  solid waste disposal technology widely used at home and abroad. However, there will be a lot of leachate  generated during the landfill process. If these leachates are directly discharged without proper treatment,  they will pose a threat to the ecological environment and human health. Activated carbon can effectively treat the leachate. The removal rates of leachate chroma, pollutants, COD, NH4+-N are high.