超声/紫外/O3/H2O2处理去除水中DDT的研究

[目的]研究超声/紫外/O3/H2O2处理去除水中DDT的效果,为建立新的去除水中DDTs的AOPs技术提供参考。[方法]配制一定浓度的DDT水溶液,分别采用超声、紫外、O3/H2O2、超声/紫外和超声/紫外/O3/H2O2组合处理,并用超声/紫外/O3/H2O2组合处理北江佛山段水样,用GC-EDC方法检测DDT含量变化,比较各处理方法的DDT去除率。[结果]水中DDT去除率分别为:超声波处理为45%～56%、紫外光处理近70%、超声/紫外联合处理超过80%、O3/H2 O2处理为28%～32%、超声/紫外/O3/H2 O2处理为91%,而北江水样DDT去除率达到85%。[结论]超声/紫外/O3/H2O2联合处理可有效去除水中DDT。

Eliminating DDT in Water with Ultrasonic/Ultraviolet/O3/H2O2 Treatment

[Objective] To investigate effects of ultrasonic(Us) /ultraviolet(Uv) /O3 /H2 O2 treatments on eliminating DDT in water.[Method] Definite concentration of DDT water solution was prepared,which was treated with Us,Uv,O3 / H2 O2,Us / Uv and Us / Uv / O3 / H2 O2,respectively,and water sample from Foshan section of Bei River also was treated with Us / Uv / O3 / H2 O2,the variation of DDT concentrations was detected with GC-EDC method,and the elimination rates of DDT were compared.[Result]The elimination rates of DDT in water were as the follow,Us treatment was 45%-56%,Uv treatment was near to 70%,Us / Uv treatment was over 80%,O3 / H2 O2 treatment was 28% 32%,and Us / Uv / O3 / H2 O2 treatment was 91%,and the elimination rate of DDT in water sample from Foshan section of Bei River reached 85%.[Conclusion] DDT in water could be eliminated effectively with Us / Uv / O3 / H2 O2 treatment.