摘要
采用UV、O_(3)和UV/O_(3) 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、O_(3)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/O_(3)的处理效果大于UV和O_(3)处理效果的总和,具有协同效应;在UV灯功率为16W、O_(3)体积浓度为0.6mL/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,O_(3) and UV/O_(3),are separately used to treat with actual biochemical tailwater of the sewage treatment plant in a chemical industrial park. Influences of UV lamp power,irradiation time,O_(3) dosage and reaction initial pH on the reaction are explored.The results show that the treatment effect by UV/O_(3) is larger than the sum of that by UV and O_(3),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 O_(3) 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).
作者
张静超
尤仁金
朱文德
陈志冬
赵海舰
刘田田
赵贤广
ZHANG Jing-chao;YOU Ren-jin;ZHU Wen-de;CHEN Zhi-dong;ZHAO Hai-jian;LIU Tian-tian;ZHAO Xian-guang(School of Environmental Science and Engineering,Nanjing Tech University,Nanjing 210009,China)
出处
《现代化工》
CAS
CSCD
北大核心
2020年第S01期166-169,175,共5页
Modern Chemical Industry
