Fenton法预处理高浓度焦化废水的影响因素与动力学研究  

Study on Influence Factors and Kinetics of Treating High Concentration Coking Wastewater by Fenton Process

作　　者：殷旭东[1] 

机构地区：[1]广东石油化工学院环境与生物工程学院,广东茂名525000

出　　处：《当代化工》2016年第4期673-676,共4页Contemporary Chemical Industry

基　　金：广东省普通高校青年创新人才项目;项目号:2015KQNCX102

摘　　要：采用Fenton预处理高浓度焦化废水,以COD和挥发酚为评价指标,通过正交和单因素实验研究了废水初始pH值、H_2O_2量、[Fe^(2+)]/[H_2O_2]和反应时间对处理效果的影响,同时对反应过程的动力学进行了探讨。结果表明:同时降解COD和挥发酚的最佳控制条件是pH值为3、H_2O_2投加量为170 m L/L、Fe^(2+)/H_2O_2摩尔比为1:80、反应时间为20 min,此时COD和挥发酚的去除率分别达到80%和95%以上;COD的降解反应符合一级动力学方程规律,相关系数R^2=0.991 5,反应速率常数为0.446 9 min^(-1)。Fenton process was applied to oxidize high concentration coking wastewater. Using removal efficiencies of COD and volatile phenol as evaluation index, through orthogonal experiment and single factor experiment, effect of operating conditions such as initial pH,hydrogen peroxide concentration, molar ratio of Fe（2＋）/H_2O_2 and reaction time on treatment result was investigated, the optimal reaction conditions were determined, and the dynamics of the reaction process was discussed. The results show that, when pH value is 3, H_2O_2 dosing quantity is 170 m L/L, Fe（2＋）/H_2O_2 is 1：80, the reaction time is 20 min, the degradation rates of COD and volatile phenol are more than 80% and 95%,respectively. COD degradation reaction follows the first-order kinetic reaction equation, and the correlation coefficient R2 is 0.991 5, the reaction rate constant is 0.446 9 min（-1）.

关 键 词：FENTON法 高浓度焦化废水 正交试验 动力学 

分 类 号：X703[环境科学与工程—环境工程]