摘要：在经济高速发展的今日中国，工业繁荣所带来的是一系列的环境问题。其中印染行业废水污染严重，难以降解，含量复杂，盐度大，浓度高，色度高。现行的传统印染废水处理方法效率较低。寻求一种高效的处理污水方法已经迫在眉睫。在种类繁多的先进氧化技术中，电催化氧化是高级氧化的一种形式。电催化氧化法操作简单，工艺简单，控制点少，设备少，有机物降解更加彻底，而且中间不易产生有毒有害物质，基本上避免了二次污染。是一种高效的污水处理方法。

本实验通过分析不同的热解温度下极化曲线、析氧曲线和循环伏安曲线，来探究Ti-SnO2-Bi电极反应的性质、机理和过程动力学参数的影响。采用制备Ti-SnO2-Bi处理甲基橙废水，探究电催化氧化过程中的最佳反应条件，pH值，电压，电解质浓度，电解时间，板数，甲基橙浓度对电化学处理的影响。当电压为15V，弱酸或弱碱时，电解质浓度为500mg/L，电解时间为20min处理效果最佳，对于20mg/L浓度的甲基橙去除率高达98％。

关键词：电催化氧化；甲基橙印染废水；Ti-SnO2-Bi

Abstract：In the rapid economic development of China today, industrial prosperity brought about by a series of environmental problems. One of the printing and dyeing industry wastewater pollution is serious, difficult to degradation, complex, salinity, high concentration, high color. The traditional traditional printing and dyeing wastewater treatment method is less efficient. It is imminent to seek an efficient way to treat sewage. In a wide range of advanced oxidation technologies, electrocatalytic oxidation is a form of advanced oxidation. Electrocatalytic oxidation method is simple, simple process, less control points, less equipment, more complete degradation of organic matter, and the middle is not easy to produce toxic and hazardous substances, basically to avoid secondary pollution. Is an efficient sewage treatment method.

In this experiment, the effects of the properties, mechanism and process parameters of Ti-SnO2-Bi electrode were investigated by analyzing the polarization curves, oxygen evolution curves and cyclic voltammetry curves at different pyrolysis temperatures. The optimum reaction conditions, pH value, voltage, electrolyte concentration, electrolysis time, plate number and methyl orange concentration on the electrochemical treatment were investigated by using Ti-SnO2-Bi to prepare methyl orange wastewater. When the  voltage is 15V, weak acid or weak base, the electrolyte concentration is 500mg / L, the electrolysis time is 20min, the removal rate is 98% for 20mg / L.

Keywords: Electrocatalytic oxidation， methyl orange printing and dyeing wastewater; Ti-SnO2-Bi

目录

第一章 绪论 1

1.1印染废水 1

1.1.1我国印染废水现状 2

1.1.2印染废水危害 2

1.1.3常用印染废水的处理方法 2

1.2电催化氧化 6

1.2.1电催化氧化定义 6

1.2.2电催化氧化基本原理 6

1.2.3电催化氧化优点 6

1.2.4电催化氧化应用 7

1.3电催化电极 7

1.3.1电极设计思路 7

1.3.2DSA电极 8

1.3.3二氧化锡钛基电极的发现 8

1.3.4DSA电极制备方法