O_3/H_2O_2工艺降解1,2,4-三氯苯的优化设计  

Optimization design of degradation of 1,2,4-trichlorobenzene by O_3/H_2O_2 processes

作　　者：魏东洋[1] 刘芬[1,2] 许振成[1] 李杰[2] 

机构地区：[1]环境保护部华南环境科学研究所,广州510655 [2]兰州交通大学环境与市政工程学院,兰州730070

出　　处：《环境工程学报》2010年第10期2221-2225,共5页Chinese Journal of Environmental Engineering

基　　金：广东省自然科学基金资助项目(84510655010118);中央级公益性科研院所环保专项(206030201)

摘　　要：考察用不同的氧化剂降解1,2,4-三氯苯(TCB),3种不同方法对TCB的去除效果存在较大差别,其处理效果依次为:H2O2<O3<O3/H2O2。采用响应面法优化O3/H2O2工艺降解TCB的条件。结果表明,TCB初始浓度和H2O2投加量对TCB去除效果影响较大。TCB的降解符合准一级反应动力学规律,最佳降解条件为TCB初始浓度0.3 mg/L,pH=8.13,H2O2投加量0.40 mmol/L,O3转化率75%。在此条件下,TCB的平均去除率为91.5%,与预测值93.1%吻合度较高。The influence of different oxidations on the 1,2,4-trichlorobenzene（TCB） degradation was investigated.Obvious differences in treatment efficiency of TCB by the three methods were observed,and the treating effect was following the order of H2O2O3O3/H2O2.Response surface methodology（RSM） was employed for the optimization degradation conditions by O3 /H2O2 processes.The results showed that the initial concentration of TCB and the dosing quantity of H2O2 had a great effect on the removal rate of TCB.The degradation processes was in line with pseudo-first order reaction kinetics and the optimal operating conditions were as follows： TCB initial concentration of 0.3 mg/L,pH=8.13,and H2O2 dosage of 0.40 mmol/L and ozone transform rate of 74.94%.Under these conditions,the average removal rate of TCB was 91.5%,which matched well with the theoretical value of 93.1%.

关 键 词：O3/H2O2 1 2 4-三氯苯 动力学 响应面法 

分 类 号：X703[环境科学与工程—环境工程]