【作者】 郑攀峰；

【导师】 王栋；

【作者基本信息】 大连理工大学 ， 环境工程， 2006， 硕士

【摘要】 高级氧化技术在废水治理方面因为具有反应速度快、处理完全、无公害、适用范围广等优点逐渐引起了世界各国的重视，并相继开展了研究与开发工作。 本文提出了高压脉冲放电催化臭氧氧化废水处理方案，研制了适合用于催化臭氧废水处理的一种小能量的脉冲功率电源，搭建整套试验装置进行了模拟染料废水处理试验，取得了较好的结果。 实验以活性艳红为研究对象，对实验的影响因素如：放电电压、电容器容量、放电电极间距、pH等参数的影响进行了研究，根据实验结果和实际条件选定实验参数。研究了在高压脉冲放电、通氧气高压脉冲放电、臭氧氧化和高压脉冲放电协同臭氧氧化4种条件下，对质量浓度为200 mg／L的模拟活性艳红K-2BP废水进行脱色和去除COD进行了对比实验。并对自由基捕获剂（Na₂CO₃）及无机盐（NaCl、Na₂SO₄）对废水处理效果的影响进行了研究和探讨。 在高压脉冲放电协同臭氧条件下，以酸性黄17、酸性黄Bis、酸性黄11三种结构相似的酸性偶氮染料为研究对象，考察了类型相同结构相似的染料的脱色和COD去除作用。 实验研究结果表明： （1） 通氧气高压脉冲放电与高压脉冲放电相比，废水脱色率提高了1.3％，COD去除率提高了3％；高压脉冲放电协同臭氧氧化与臭氧氧化相比，脱色率提高了约10％，COD去除率提高了15.2％。加入自由基捕获剂Na₂CO₃，使COD去除率明显下降，但脱色率变化不大。加入无机盐NaCl或Na₂SO₄后，废水的降解实验结果表明，在臭氧氧化条件下，加入NaCl阻碍降解，而加入Na₂SO₄能促进降解。在高压脉冲放电协同臭氧氧化条件下，COD去除率随电导率的增加而降低。 （2） 酸性黄17、酸性黄Bis、酸性黄11三种结构相似的酸性染料的脱色率与吸电子基团磺酸基和供电子基团氯取代基相对于偶氮键的位置有关。更多还原

【Abstract】 The application of advanced oxidation technologies has played an important role in wastewater treatment all over the world due to its fast reaction velocity, high removal efficiency, harmlessness, extensive application and so on. More research and development was being done recently.In this paper, a new wastewater treatment technology, which combines high-voltage pulsed discharge with ozone oxidization, is put forward. To carry out the experiments, a low-energy pulsed power supply instrument was manufactured, and a whole set of experimental facilities were constructed. Satisfying experiment results have been obtained.Reactive red was chosen to be experimental object. Influencing factors, such as discharge voltage, capacitor content, distance between discharge electrodes and pH etc, were investigated thoroughly. According to the experimental results and practical conditions, experimental parameters were selected. Under four different conditions, which were high voltage pulsed discharge, ozonation, combination of discharge with O₂ and combination of discharge with ozonation respectively, the decoloration and COD removal experiments of 200mg/L reactive red K-2BP wastewater were investigated and compared. Besides, the influence of radical scavenger （Na₂CO₃） and inorganic salt （NaCl and Na₂SO₄） on wastewater treatment efficiency was also investigated and discussed.Under conditions of high-voltage pulsed discharge combined with ozonation, three kinds of similar-structural azo dyes, acid yellow 17, acid yellow Bis and acid yellow 11, were used as experimental objects to investigate the decoloration and COD removal efficiency of this technology to dyes of same type and similar structure. Experimental results show that:（1） Compared with single high-voltage pulsed discharge, the combination of it with O₂ can increase 1.3% of decoloration efficiency and 3% of COD removal efficiency. Compared with single ozonation, the combination of it with high-voltage pulsed discharge can increase 10% of decoloration efficiency and 15.2% of COD removal efficiency. The addition of radical scavenger Na₂CO₃ greatly decreases the COD removal efficiency, but the decoloration efficiency remains unchanged. Under single ozonation conditions, COD removal increases with the addition of Na₂SO₄ but decreases with the addition of NaCl. Under high voltage pulsed discharge combined with ozonation conditions, COD removal decreases with the increase of conductivity.更多还原