吸附催化-无极紫外光助Fenton联用降解DMP的研究

STUDY ON DEGRADATION OF DIMETHYL PHTHALATE(DMP) BY THE COMBINATION OF MWUV/FENTON AND ADSORPTION-CATALYTIC

邻苯二甲酸二甲酯(DMP)是一种不易降解的有毒有害污染物。试验研究了在活性炭的吸附催化作用下,UV和Fe2+协同催化H2O2,产生具有强氧化性的.OH,降解DMP的过程。结果表明,UV/Fe2+-H2O2/吸附层体系对DMP废水有较好的催化氧化降解作用。对于初始质量浓度为100 mg.L-1的DMP溶液,初始pH为4、FeSO4与H2O2摩尔投加量比为1:3.0,曝气量为0.25 L.min-1,反应80 min后,紫外吸收去除率提高到75%,TOC去除率达到68%。

Dimethyl phthalate（DMP） is a kind of toxic pollutant and hard to degrade.The study on synergistic catalytic effect of UV/Fe2＋-H2O2 can produce a strong oxidation of·OH and depradate DMP on the condition that the adsorption-catalytic of activated carbon catalyst.The result showed that UV/Fe2＋-H2O2 system can have better oxidation and degradation effect on DMP wastewater.For 100 mg·L-1 DMP,The beneficial conditions for the improvement of synergistic catalytic effect and reaction rate were： The initial pH value was 4,the rate of adding FeSO4 and H2O2（30%） was 1：30,the aeration rate was 0.25 L·min-1.The removal of UV absorption rate can be 75% and TOC removal rate can be 68% after 80 min＇s reaction.