This dataset represents the treatment of wastewater generated by general transformation activities. The average COD content of domestic sewage in Xinzhou City, Shanxi Province is 0.318 kg/m3, and the BOD is 0.1524 kg/m3. The wastewater treatment process shares in this region are: A²/O 53.51%, A/O 35.76%, Orbal oxidation ditch 4.66%, MBR 3.86%, SBR 2.21%.