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 provinces. The treatment technologies primarily represent aerobic biological treatment, activated sludge process, A-O, A2-O, oxidation ditch, MBR, SBR, and biofilm processes.