UVfenton处理苯酚废水.docVIP

摘要 酚类化合物pH值、反应时间、紫外光照射时间等因素对UV/Fenton氧化法对降解苯酚的影响。实验结果确定了在紫外光照射20min前提下的最佳工艺条件：苯酚初始浓度为50mg/L，pH值为3.5，反应时间为60分钟， H2O2的浓度为200mmol/L，Fe2+的浓度为20mmol/L，无论是大于或是小于最佳值浓度均会导致苯酚降解速率的下降。在此最佳工艺条件下，UV/Fenton对苯酚降解的去除率可达90%以上。实验结果表明，UV/Fenton氧化法在有机废水处理上是一种非常有效的技术。 关键词 紫外光；Fenton试剂；苯酚；催化氧化  Study on the Degradation of Phenol compounds by UV/Fenton Method Abstract Phenolic compounds are one of the U.S. Environmental Protection Agency (EPA) list of 129 priority pollutants, and phenol is a widely used industrial chemicals, is also the product of many industrial production. With the steel, oil refining, petrochemicals, plastics, synthetic fiber industry, the rapid development of the type and quantity of phenolic wastewater increasing pollution a wide range of great danger. In this experiment, self-made solution for the wastewater treatment phenol object of UV and Fenton reagent oxidation of phenol degradation of organic matter, using 4 - Amino antipyrine direct spectrophotometry to determine phenol content. The experiment, the concentration of H2O2, Fe2 + concentration, pH, reaction time, ultraviolet irradiate time on UV / Fenton oxidation on the degradation of phenol. The results confirmed the premise 20min UV irradiation the optimum conditions: the initial phenol concentration 50mg / L, pH = 3.5, reaction time was 60 minutes, H2O2 concentration of 200mmol / L, Fe2+ concentration 20mmol / L, regardless of the value is greater than or less than the optimal concentration of phenol degradation rate will lead to the decline. Under optimum conditions in this, UV / Fenton degradation of phenol removal rate of up to 90%. The results show that, UV / Fenton oxidation treatment of organic waste is a very effective technique. Keywords Ultraviolet；Fenton reagent；Phenol；Catalytic Oxidation  目录 1 综述 1 1.1 研究的目的及意义 1 1.2 Fenton试剂 2 1.2.1 Fenton试剂简介 2 1.2.2 Fenton试剂的反应机理 2 1.2.3 Fenton试剂的前景与展望 3 1.3 uv/Fenton法 3 1.3.1 UV/Fenton法简介 3 1.3.2 UV/Fenton机理 3 1.3.3 UV/Fenton在废水处理中的应用 4 1.4 含酚废