This sewage treatment plant is located in Aoyang Industrial Park, Funing, Jiangsu. It treats industrial sewage and domestic sewage generated in the industrial park. The daily sewage treatment capacity is 24,000 tons; the designed inlet water quality COD: 500mg/L, BOD: 300mg/L, SS: 200mg/L, TN: 45mg/L, ammonia nitrogen: 35mg/L; design water quality COD: ＜80mg/L, BOD: ＜20mg/L, SS: ＜70mg/L, TN: ＜20mg/L, ammonia nitrogen : <15mg/L; the treated wastewater is discharged into Nanhong, the seawater channel. The process of "Fenton oxidation + hydrolysis and acidification + A/O + flocculation sedimentation tank + ozone oxidation + activated carbon biological filter" is adopted.