The dataset represents the treatment of wastewater generated by conventional conversion activities. The average content of COD in domestic wastewater in Sanmenxia City, Henan Province is 0.2603 kg/m3, and BOD is 0.0722 kg/m3. The distribution of wastewater treatment processes in this area are as follows: MBR accounts for 35.77%, A²/O accounts for 19.86%, Orbal oxidation ditch accounts for 12.12%, A/O accounts for 12.01%, CAST accounts for 8.96%, and others account for 11.28%.