The dataset represents the treatment of wastewater produced by conventional conversion activities. The average COD content in domestic wastewater in Jiaxing, Zhejiang Province is: 0.1996 kg/m3, and BOD is 0.061 kg/m3. The proportions of wastewater treatment processes in this area are as follows: A/O 56.58%, A2/O 18.57%, SBR 14.56%, CASS 7.94%, BAF (biological aerated filter) 1.64%, and others 0.71%.