This dataset represents the treatment of wastewater generated by general transformation activities. The average COD content of domestic sewage in Suqian City, Jiangsu Province is 0.1984 kg/m3, and the BOD is 0.098 kg/m3. The wastewater treatment process shares in this region are: A²/O 57.4%, activated sludge process 14.09%, oxidation ditch 13.3%, modified SBR 9.82%, modified A²/O 3.82%, others 1.57%.