Fenton氧化工艺降解废水中3,4-二氯三氟甲苯  

Degradation of 3,4- Dichlorobenzotrifluoride in Wastewater by Fenton Oxixation Process

作　　者：杨智临 张鲁宁[1] 陈海[1] 白智勇[1] 杨琦[1] 

机构地区：[1]中国地质大学(北京)水资源与环境学院,北京100083

出　　处：《净水技术》2015年第3期30-35,共6页Water Purification Technology

基　　金：国家自然基金(50578151);国家重大科技专项(2009ZX07207-008;2009ZX07419-002;2009ZX07207-001);中央高校基本科研业务费专项资金(2652013101;2652013086;2652013087);重点防控重金属汞;铬;铅;镉;砷便携/车载/在线监测仪器开发与应用示范(2012YQ060115)

摘　　要：该文利用Fenton法降解水中农药中间体3,4-二氯三氟甲苯(3,4-DCBTE)。为评估Fenton法处理3,4-DCBTE时的降解特性,对初始p H,H2O2/Fe2+投加比率和温度Fenton等不同反应参数及Fenton法氧化3,4-DCBTE的降解产物进行了研究。结果表明在H2O2投加量为2.67 g/L、温度为20℃、H2O2/Fe2+配比为15、p H为3的最优条件下反应2 h,3,4-DCBTE去除率高达93.1%。结合数据进一步分析,推测3,4-DCBTE最终被氧化生成氯苯。The degradation of herbicide pesticide intermediate,namely 3,4-dichlorobenzotrifluoride （3,4 DCBTE）by Fenton reaction in aqueous solution was studied in this paper. In order to estimate the degradation characteristics of 3,4 DCBTE,several operating parameters,such as initial pH,ratio of H 2 O2 / Fe2 ＋ and temperature,were investigated. Degradation products of 3,4 DCBTE by Fenton reaction were also studied. The results show that removal rate of 3,4 DCBTE by Fenton oxidation can reach to 93. 1% under the optimal condition as follows：H 2 O2 is 2. 67 g/ L,ratio of H 2 O2 / Fe2 ＋ is 15,pH is 3,temperature is 20 ℃ and reaction time is 2 h. Further data analysis indicates that the 3,4 DCBTE is eventually degraded into chlorobenzene.

关 键 词：Fenton氧化工艺 3 4 二氯三氟甲苯 农药中间体 降解 

分 类 号：X703[环境科学与工程—环境工程]