This sewage treatment plant is located in Weinan Agricultural Science and Technology Park, Shaanxi. It treats domestic sewage and industrial wastewater in the urban planning area. The daily sewage treatment capacity is 5,000 tons; the designed inlet water quality COD: 800mg/L, BOD: 400mg/L, SS: 200mg /L, TN: 45mg/L, ammonia nitrogen: 35mg/L; after sewage treatment, it reaches the Class A standard of the "Pollutant Discharge Standard for Urban Sewage Treatment Plants" (GB18918-2002), effluent water quality COD: <50mg/L, BOD :＜10mg/L, SS:＜10mg/L, TN:＜15mg/L, ammonia nitrogen:＜8mg/L. The main treatment process is "pre-slag removal and sand settling + hydrolysis and acidification + A/O + pressure activated carbon filtration".