This dataset represents the treatment of wastewater generated by general transformation activities. The average COD content of domestic sewage in Jincheng City, Shanxi Province is 0.2328 kg/m3, and the BOD is 0.0887 kg/m3. The wastewater treatment process shares in this region are: Orbal oxidation ditch 63.82%, A²/O 30.4%, A/O 3.29%, BAF aerated biofilter 1.4%, SBR 1.08%.