This dataset represents the treatment of wastewater generated by general transformation activities. The average COD content of domestic sewage in Fuyang City, Anhui Province is 0.1791 kg/m3, and the BOD is 0.0422 kg/m3. The wastewater treatment process shares in this region are: CASS 43.99%, Carrousel oxidation ditch 19.57%, Orbal oxidation ditch 18.18%, A/O 10.89%, oxidation ditch 7.37%.