The dataset represents the treatment of wastewater generated by conventional transformation activities. The average COD content in domestic wastewater in Changchun City, Jilin Province is: 0.2558 kg/m3, and BOD is 0.0975 kg/m3. The proportion of wastewater treatment processes in this area are as follows: A²/O 74.83%, A/O 11.42%, CASS 5.01%, secondary biological treatment 2.93%, Bellac 2.24%, and others 3.56%.