This dataset represents the treatment of wastewater generated by general transformation activities. The average COD content of domestic sewage in Tonghua City, Jilin Province is 0.229 kg/m3, and the BOD is 0.0922 kg/m3. The wastewater treatment process shares in this region are: A²/O 36.82%, CASS 24.36%, activated sludge process 21.63%, BIOLAK 8.95%, CAST 8.24%.