锰铈氧化物臭氧催化处理苯胺废水实验研究

发布时间：2018-01-12 15:00

本文关键词：锰铈氧化物臭氧催化处理苯胺废水实验研究　出处：《大连海事大学》2017年硕士论文　论文类型：学位论文

【摘要】：印染废水具有成分复杂、色度深且COD高的特点,是工业废水中较难处理的一类。苯胺作为制备染料的原材料,是印染废水中的主要污染物质,其去除效率可以在一定程度上衡量印染废水处理技术的优劣。目前国内外有大量研究围绕着如何有效降解印染废水而展开,其处理方法主要包括物理法、化学法和生物法。在诸多水处理技术中,非均相臭氧催化氧化法是基于化学法的新型高级氧化技术,具有重要研究价值。因此本论文以非均相臭氧催化氧化法为基础,以苯胺为去除目标,并分别选取了锰铈氧化物和γγ-氧化铝作为催化组分和支撑载体,使用浸渍法制备出了不同规格的催化剂。实验在臭氧产量0.8 g/h、处理水量2.5 L、苯胺初始浓度30 mg/L的室温条件下进行,对锰铈浸渍摩尔比、硝酸锰浸渍浓度和催化剂投加量进行了深入研究,以探索制备过程中控制因素变化对苯胺去除率的影响。根据单因素实验和正交实验结果,催化剂制备过程中的最佳锰铈浸渍摩尔比和最佳硝酸锰浸渍浓度分别为3:1和1.0 mol/L,其中效果最好的一组催化剂相对于空白实验提高了苯胺去除率11%。结合考虑到催化剂利用率和苯胺去除率,认为当苯胺废水处理量为2.5 L时,最佳催化剂投加量为100 g。通过对正交实验数据进行极差分析和方差分析,得到三个因素影响苯胺去除率的主次顺序为:锰铈浸渍摩尔比硝酸锰浸渍浓度催化剂投加量。
[Abstract]:Printing and dyeing wastewater with complex composition and characteristics of deep color and high COD, is a kind of industrial wastewater is difficult to treat. The raw materials for preparation of aniline dyes, are the main pollutants in dyeing wastewater, the removal efficiency can be measured by the printing and dyeing wastewater treatment technology to a certain extent at home and abroad have a lot of advantages and disadvantages. Study on how to effectively degrade dyeing wastewater and start the treatment methods mainly include physical method, chemical method and biological method. In many water treatment technology in heterogeneous catalytic ozonation is chemical advanced oxidation technology based on it has important research value. This paper in heterogeneous catalytic ozonation oxidation method based on Aniline Removal, and selected a manganese cerium oxide and gamma gamma alumina as a catalyst component and support carrier, using the catalyst prepared by impregnation of different specifications of the experiments. In the ozone output of 0.8 g/h, 2.5 L of water at room temperature, the initial concentration of aniline is 30 mg/L, the molar ratio of manganese manganese cerium impregnated, impregnation concentration and catalyst dosage were studied, in order to explore the changes of control factors in the preparation process on the removal rate of aniline. According to single factor experiment and orthogonal experiment the best molar ratio in the process of manganese cerium impregnated and best nitrate impregnation concentration of catalyst preparation were 3:1 and 1 mol/L, the effect of a group of the best catalyst compared with the blank experiment to improve the removal rate of aniline with 11%. considering the catalyst utilization rate and the removal rate of aniline, that when the treatment of aniline wastewater was 2.5 L, the best the catalyst dosage of 100 g. by range analysis and variance analysis of the orthogonal experimental data, get the order of three factors affecting the removal rate of aniline is: Manganese cerium impregnated Moldova The molar ratio of nitrate impregnation concentration of catalyst dosage.

【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X791

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