According to the water quality of this kind of wastewater, our company adopts the process of "mechanical grid + conditioning tank + improved AO + sand filtration + sodium hypochlorite disinfection + ultraviolet disinfection", and the end of the process sets sand filtration + two levels of disinfection, which can ensure the stable discharge of wastewater up to the standard. After treatment, the effluent can reach the "Medical Institution Water Pollutant Discharge Standard", and the specific effluent quality is as follows: CODcr≤60mg/l, BOD5≤20mg/l, SS≤20mg/l, NH3-N≤15mg/l, fecal coliform number≤500, total residual chlorine≤0.5mg/L, which can be directly discharged.