摘要
采用UV-Fenton技术光催化氧化高浓度邻苯二甲酸二辛酯(DOP)生产废水,确定最佳操作条件为:初始pH=3.8,H2O2浓度为9.99 g/L,H2O2/Fe2+摩尔比为20∶1,光照反应60 m in。此条件下的废水COD去除率为89.1%,出水COD值在570 mg/L左右。经正交试验确定影响处理效果各因素的重要性顺序为:H2O2浓度>H2O2/Fe2+摩尔比>光照反应时间>pH。UV的加入与单独的Fenton体系存在正相关的协同作用。废水降解的表观过程符合一级反应动力学模式。
The UV-Fenton light catalysis oxidization process was adopted to treat a high concentration dioctyl phthalate （DOP） production wastewater. The optimal operation conditions were determined as follows： initial pH =3.8, H2O2 concentration =9.99 g/L, H2O2/Fe^2＋ molar ratio =20： 1, and UV radiation time =60 min. The COD removal rate of the wastewater could reach 89.1% under above experimental conditions, and the effluent COD was approximately 570 mg/L. According to the orthogonal test results, the significance of various influencing factors followed the decreasing order： H2O2 concentration 〉 H2O2/Fe^2＋ molar ratio 〉UV radiation time 〉 pH. UV radiation enhanced the treatment efficacy of the Fenton process. The apparent process of DOP degradation by UV-Fenton could be well expressed by the first order kinetic equation.
出处
《环境工程学报》
CAS
CSCD
北大核心
2007年第7期71-74,共4页
Chinese Journal of Environmental Engineering
