【作者】 严国奇；

【导师】 潘理黎；

【作者基本信息】 浙江工业大学 ， 环境工程， 2006， 硕士

【摘要】 本文尝试应用高压电晕和臭氧联用的新方法来处理染料废水。该方法利用高压放电产生的低温等离子体和臭氧的协同作用，产生更多的·OH自由基。通过活泼的·OH与染料反应，破坏染料的发色体系，打开芳香环，生成分子量较小且无色的有机酸、醛等，甚至最终降解成为CO₂和H₂O，达到脱色和降解有机物的目的。 在通过正交实验法得到的最佳实验装置操作条件基础上，通过比较单独电晕或单独臭氧和联用处理500mg／L酸性红B模拟废水的脱色效果和COD_Cr去除率，验证了高压电晕和臭氧联用存在协同效应。实验表明高压电晕降解酸性红B符合表观零级反应动力学，单独臭氧和联用处理符合表观一级反应动力学，联用处理的反应速率明显要高于单独处理。联用处理的反应速率随着初始浓度的上升而降低。实验还考察了初始pH值和碳酸根的加入对酸性红B处理效果的影响，发现初始pH值分别为3.0，7.0，9.0时，初始pH值越大，联用处理的脱色效果越好，COD_Cr去除率也越高；废水中碳酸根浓度越大，联用处理的脱色效果越差，COD_Cr去除率也越小。 根据对酸性红B降解过程中pH值与电导率的变化、SO₃^2-／SO₄^2-与NO₂^-／NO₃^-浓度的变化趋势和其UV-Vis光谱图的分析，推测出酸性红B可能的降解途径。 通过高压电晕与臭氧联用降解不同分子结构的染料活性艳红更多还原

【Abstract】 The combination technology of high voltage pulsed corona and ozone is a new kind of wastewater process, it utilizes the synergism of the two methods to produce more hydroxyl radicals. Hydroxyl radical can react lively with dye, destroy the colour system and aromatic nucleus, and generate colorless organic acid, aldehyde and so on, even degrade dye into CO₂ and H₂O, and finally achieve the goal of decolorization and organic compound degradation.Through the contrast of decolorization effect and COD_Cr removal efficiency of 500mg/L acid red B solution by separate treatment and by combination treatment on the optimum experimental conditions got from orthogonal method, the synergism of high voltage pulsed corona and ozone was validated. The experimental results show acid red B degradation by corona accorded with zero-order kinetics, the degradation by ozone or combination treatment accorded with first-order kinetics, and the reaction rate of combination treatment was higher than that of更多还原