不同高级氧化技术降解邻苯二甲酸二甲酯的对比研究  

Comparative study on degradation of dimethyl phthalate by different advanced oxidation technologies

作　　者：余可 王志鹏 陈蕾[1] YU Ke;WANG Zhi-peng;CHEN Lei(School of Civil Engineering,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]南京林业大学土木工程学院,江苏南京210037

出　　处：《应用化工》2022年第12期3458-3462,3468,共6页Applied Chemical Industry

基　　金：国家自然科学基金项目(42077323)。

摘　　要：以邻苯二甲酸二甲酯(DMP)为目标污染物,研究了3种高级氧化技术(O_(3)氧化、UV/H_(2)O_(2)、Fenton法)对水中DMP的去除效果,采用单因素研究法考察DMP降解的影响因素,采用响应面分析法优化以寻得每种工艺的最佳工艺条件,并对3种处理技术的最佳去除效果及经济成本进行了对比分析。结果表明,对初始浓度为50 mg/L的DMP,O_(3)氧化法反应的最佳条件为:O_(3)浓度15 mg/L、pH值9;UV/H_(2)O_(2)反应的最佳条件为:UV功率300 W、H_(2)O_(2)投加量为180 mg/L、pH值为5;Fenton法最佳条件为Fe2SO4浓度60 mg/L,pH值为3,H_(2)O_(2)投加量为180 mg/L。响应面优化分析得出3种高级氧化技术对DMP的降解效果依次为:UV/H_(2)O_(2)>O_(3)>Fenton,降解成本由高到低为UV/H_(2)O_(2)>Fenton>O_(3)。Taking dimethyl phthalate(DMP)as the target pollutant,the removal effects of three commonly used advanced oxidation technologies(O_(3)oxidation,UV/H_(2)O_(2)and Fenton method)on DMP in water were studied.The single factor method was used to investigate the influencing factors of DMP degradation.The response surface analysis method was used to optimize the process conditions of each process,and the costs of the three methods were compared.The results show that for DMP with an initial concentration of 50 mg/L,the optimal conditions for O_(3)oxidation reaction are O_(3)concentration of 15 mg/L and pH value of 9,UV/H_(2)O_(2)reaction conditions are UV power of 300 W,H_(2)O_(2)dosage of 180 mg/L and pH value of 5,and Fenton method conditions are Fe2SO4concentration of 60 mg/L,pH value of 3 and H_(2)O_(2)dosage of 180 mg/L.The degradation rate of DMP by various processes are comprehensively compared,the degradation effects of three advanced oxidation methods on DMP were as follows:UV/H_(2)O_(2)>O_(3)>Fenton,and the degradation cost from high to low was UV/H_(2)O_(2)>Fenton>O_(3).

关 键 词：邻苯二甲酸二甲酯 影响因素 降解 响应面优化法 

分 类 号：TQ09[化学工程] TQ209[环境科学与工程—环境工程] X703.1