This dataset represents the treatment process of leachate generated from incineration activities. It is applicable to Beijing, Tianjin, Hebei, Shanxi, Shandong, Jilin, Liaoning, Heilongjiang, Shaanxi, and Henan. The treatment technologies mainly include filtration separation, centrifugal separation, sedimentation separation, neutralization, chemical precipitation, chemical coagulation, anaerobic hydrolysis, anaerobic biofilters, stabilization ponds, constructed wetlands, and land treatment methods.