【作者】 余华东；

【导师】 陈英旭； 黄武；

【作者基本信息】 浙江大学 ， 环境工程， 2012， 硕士

【摘要】 氨基硅油广泛应用于纺织印染行业,其微乳废水具有高浓度、难降解等特性,是一类难处理的工业废水。电化学技术由于设备简单、管理方便、成本较低和处理效果高等优点日益受到人们的重视,常用于高浓度难降解工业废水的预处理。本论文以氨基硅油微乳液模拟废水为研究对象,首次选用Fe/C微电解和铝、铁脉冲电絮凝两种电化学方法,详细探讨了各种因素对模拟废水处理效果的影响；同时,还深入研究了Fe/C微电解反应过程中氧化作用的贡献率；研究还对铝、铁极板脉冲电絮凝处理的物耗、能耗以及絮凝产物进行了综合对比分析。研究结果如下：1.Fe/C微电解实验结果表明,微电解的填料可通过吸附作用去除一部分氨基硅油,新鲜活性炭和铁屑对废水的COD去除率分别为72%和14%；当pH值为3,Fe/C为1：2、1：1和2：1时,氧化作用对微乳液废水COD去除率的贡献分别大于8%、28%和22%；铁屑和活性炭表面被氨基硅油微乳液包裹,阻碍了微电解的各种作用,微电解效果逐渐减弱。2.脉冲电凝聚实验结果表明,在处理原模拟废水时铝和铁脉冲电絮凝具有共同的最佳电化学参数为电流0.9A(电流密度11.25mA·cm2-),占空比0.5,脉冲频率0.5KHz,最佳处理时间分别为30min和60min,最大COD去除率分别达17.1%和55%。与直流电絮凝相比,铝电极和铁电极脉冲电絮凝在单位COD电能耗上分别下降了75.5%和76.0%。总之,铁电极脉冲电絮凝方法处理氨基硅油微乳液废水的效果显著优于Fe/C微电解和铝电极脉冲电絮凝方法。更多还原

【Abstract】 Aminosilicone polymer is widely applied in textile and dyeing industry and its microemulsion wastewater, characterized with high Chemical oxygen demand(COD) concentration and refractory property, is difficult to treat. Electro-chemical technology is paid attention and extensively applied into the pre-treatment of industry wastewater due to its simple equipment, convenient management, low cost and high efficiency.This paper focused on the pre-treatment of aminosilicone microemulsion by Fe/C micro-electrolysis(ME), Al-Pulse electrocoagulation(Al-PEC) and Fe-Pulse electrocoagulation (Fe-PEC) for the first time. Some main influenced factors on removal efficiency were studied. Meanwhile, it explored the oxidation reaction of Fe/C micro-electrolysis and deeply compared and analysed the material and energy consumptions and flocculation products of Al-PEC and Fe-PEC. The main results are as follows:1. The results of Fe/C ME were:72% and 14% COD removal efficiency with new active carbon and iron chip were achieved through adsorption. Oxidation also contribute to the removal of aminosilicone microemulsion with more than 8%,28% and 22% COD removal efficiency, under the conditions of fixed pH 3.0 and Fe/C of 1:2,1:1 and 2:1 respectively. The coverage of aminosilicone microemulsion on materials prevented the reaction and lessened the removal efficiency.2. The results of PEC were that for the treatment of primary simulated wastewater, the same optimal electrochemical parameters of Al-PEC and Fe-PEC were current of 0.9A, dutyfactor of 0.5 and pulse frequency of 0.5KHz, and COD removal efficiencies of 17.1% and 55% were achieved under the optimal treatment time of 30min and 60min,respectively. Comparison with direct EC, energy consumption per COD of the A1-PEC and Fe-PEC decreased by 75.5% and 76% respectively.All in all, Fe-PEC was superior to Fe/C micro-electrolysis and Al-PEC on the removal of aminosilicone polymer microemulsion更多还原