This dataset represents the treatment process of leachate generated from incineration activities. It is applicable to Guangdong, Zhejiang, Guangxi Autonomous Region, Hainan, Fujian, Hunan, and Jiangxi. The treatment technologies mainly include aerobic biological treatment, activated sludge process, A-O, A2-O, oxidation ditch, MBR, SBR, and biofilm process.