uv-fenton法处理中药制药废水的试验分析-experimental analysis of uv - fenton method for treating chinese medicine pharmaceutical wastewater.docx

AbstractWith the rapid development of Chinese medicine industry, the water environment has been endangered seriously by the unqualified wastewater from the pharmaceutical factory, so it is significant to develop wastewater treatment technology which is stable, energy saving, low power and have simple process, high efficiency, according to the research of Chinese medicine wastewater that has high pollutional and refractory contribution to the water treatment. The advanced oxidation process also can be called advanced oxidation technology, it is usually thought as the oxidation process based on the reaction of the hydroxyl radical (·OH), as the semifinished product, it is an efficient technology that has many characteristics, such as thorough treatment, road scope of application, no secondary pollution, etc. Because of the characteristics that the high efficiency of photocatalytic oxidation, very strong oxidation ability and so on, it has more advantages when being used to treat toxic and hazardous waste that contains high concentrations and refractory materials. Through the wastewater treatment experiment using UV-Fenton system, the following conclusions are inferred:(1) In the wastewater treatment experiment using UV-Fenton system, six kinds of factors are investigated: H2O2 dosage pH value reaction time Fe2+ dosage reaction temperature adding manner of oxidant. Through the experiment, the optimum reaction conditions are determined as follows: H2O2 dosage is 6.40ml/L,pH≈4.0, the reaction time is 100min, Fe2+ concentration is 220mg/L, temperature isaround 20℃, throw oxidant several times, but considering the operation, one-time throwing may be the best choice. COD removal rate can reach 87.88%. N-NH3 can beremoved well during the process of treatment. Color can be removed in significant measure either.Keywords Chinese medicine wastewater, UV-Fenton, Treatment of wastewater, Catalytic oxidation.第一章 绪论1.1 引言水资源是世界上分布最广泛的资源之一，也是人类与各种生物赖以生存