采用UV、O₃和UV/O₃ 3种方法处理化工园区污水处理厂实际生化尾水，考察了UV灯功率、照射时长、O₃投加量和反应初始pH等因素对反应过程的影响。结果表明，UV/O₃的处理效果大于UV和O₃处理效果的总和，具有协同效应；在UV灯功率为16 W、O₃体积浓度为0.6 mL/min、初始pH=7.1、照射时长120 min的条件下，尾水COD从82.3 mg/L降至49.5 mg/L，COD去除率达40%，达到《城镇污水处理厂污染物排放标准》（GB 18918—2002）中的一级A标准。

Three methods,including UV,O₃ and UV/O₃,are separately used to treat with actual biochemical tail-water of the sewage treatment plant in a chemical industrial park.Influences of UV lamp power,irradiation time,O₃ dosage and reaction initial pH on the reaction are explored.The results show that the treatment effect by UV/O₃ is larger than the sum of that by UV and O₃,representing a synergistic effect.The content of COD in tail water drops from 82.3 mg·L^-1 to 49.5 mg·L^-1,with a removal rate of 40% when the power of UV lamp is 16 w,the dosage of O₃ is 0.6 mL·min^-1,the initial pH is 7.1,and the duration of irradiation is 120 min.The effluent reaches grade A of China's Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918—2002).

张静超(1993-),男,硕士生,研究方向为水污染控制理论与技术,15151813705,zjc24103@163.com