高铁酸钾处理微污染水中苯酚和COD的研究.pdf

太原理工大学硕士研究生学位论文I 高铁酸钾处理微污染水中苯酚和 COD 的研究 摘 要 近年来随着我国经济社会的发展，微污染水受到了不同程度的污染，其中有机物的污染尤为突出 传统的微污染水处理剂在水处理过程中易形成二次污染， 因此在人们对水质标准要求越来越高的今天， 传统水处理剂已无法满足人们的要求 开发和应用新型高效多功能的水处理剂具有重要的社会意义、经济意义和环境意义高铁酸钾是 20 世纪 70 年代以来开发的水处理剂，是一种集氧化、吸附、絮凝、助凝、杀菌、消毒、去污、除臭为一体的新型高效多功能水处理剂， 由于其在快速高效去除水中污染物的同时，不产生三氯甲烷、氯代酚等衍生物，被誉为绿色水处理剂 目前， 我国的一些研究机构已经开展了高铁酸盐的研究工作， 主要集中在高铁酸盐的合成制备，高铁酸盐应用于废水处理的工艺技术还不成熟， 对去除有机物的反应机理研究也较少 高铁酸盐的许多优越性尚未充分发挥，很有必要进行深入系统的研究 本文主要利用高铁酸钾在水处理过程中具有的强氧化性和絮凝性， 通过高铁酸钾的氧化絮凝实验， 分别研究了高铁酸钾在微污染水环境中对苯酚和 CODMn的氧化效果和絮凝效果，分析影响去除效果的主要因素，得到去除苯酚和 CODMn的最佳投加条件。

并进一步探讨了高铁酸钾的氧化机理和絮凝机理 单独使用高铁酸钾对苯酚的氧化实验表明： 高铁酸钾的投加量， 反应时间， 水体环境的 pH 值， 搅拌等条件是影响高铁酸钾去除苯酚和 CODMn太原理工大学硕士研究生学位论文II 去除率的主要因素， 其中高铁酸钾投加量的影响最为关键 当高铁酸钾与苯酚的质量比为25： 1， 在pH=9的条件下氧化20分钟后， 浓度为12.93mg/L的苯酚溶液，苯酚的去除率达到 33.75% 单独使用高铁酸钾对 CODMn的氧化实验表明： CODMn和苯酚的去除率有正相关性，CODMn和去除率总是大于苯酚的去除率影响高铁酸钾氧化性的因素如高铁酸钾的投加量，反应时间，溶液中的 pH 值等都会对 CODMn的去除效果产生一定的影响， 其中高铁酸钾投加量的影响最大当高铁酸钾与苯酚的质量比为 25：1，在 pH=9 的条件下氧化 20 分钟后，CODMn的去除率达到 40.55% 在氧化絮凝实验中，通过改变反应阶段中氧化时间、氧化阶段的 pH值、絮凝时间、絮凝阶段的 pH 等条件，研究了高铁酸钾的絮凝机理，同时发现高铁酸钾去除有机物主要依靠其强氧化性而非絮凝性 关键词： 高铁酸钾 除苯酚和 CODMn 微污染水 太原理工大学硕士研究生学位论文III RESEARCH ON REMOVAL OF PHENOL AND COD FROM MICRO-POLLUTED WATER USING POTASSIUM FERRATE ABSTRACT In recent years, as China's economic and social development, micro-polluted water affected to different degrees of pollution, including organic pollution is particularly prominent. The traditional micro-polluted water treatment agent in the treatment process easy to form secondary pollution, so people are increasingly demanding high quality standards of today, the traditional water treatment agent can no longer satisfy people's demands. The development and application of new high-performance multi-functional water treatment agent has important social significance, economic significance and environmental significance. Potassium ferrate is 70 years since the 20th century, the development of water treatment agent, is a set of oxidation, adsorption, flocculation, coagulation aid, sterilization, disinfection, decontamination and deodorization as one of the new high-performance multi-functional water treatment agent, as its fast and efficient removal of contaminants from water at the same time, does not produce chloroform, chloro-phenol derivatives, known as green water treatment agent. 太原理工大学硕士研究生学位论文IV At present, China has undertaken a number of research institutions in the research work of ferrate, mainly concentrated in the synthesis of ferrate preparation and water treatment applications, for removal of organic matter ferrate reaction mechanism are working on less. Ferrate yet to give full play to the many advantages, it is necessary to conduct in-depth systems. Potassium ferrate has a strong oxidizing and flocculating nature in water treatment process . By potassium ferrate oxidation-coagulation experiments, this paper studied the potassium ferrate oxidation of phenol and CODMn effects and flocculation effect in micro-polluted water .Analyzed the impact of this removal of the main factors to be the best to remove phenol and CODMn dosing conditions. And to further explore the mechanism of potassium ferrate oxidation and flocculation mechanism. Oxidation of phenol experimental by potassium ferrate results show that: potassium ferrate dosage, reaction time, pH, agitation and other conditions affect the potassium ferrate removal of phenol and removal of the main CODMn, including potassium ferrate dosage is the most critical. When the potassium ferrate and phenol mass ratio of 25:1, at pH = 9 under the conditions of oxidation after 20 minutes, the concentration of 12.93mg / L of phenol solution of phenol removal rate reached 33.75%. Oxidation experiments of potassium ferrate on CODMn show that: CODMn removal and phenol removal is a positive correlation, the removal rate of CODMn is always greater than the removal rate of phenol. Affecting 太原理工大学硕士研究生学位论文V potassium ferrate oxidation of factors such as potassium ferrate dosage, reaction time, the solution of pH will have an impact on the removal of CODMn, in which potassium ferrate dosage most affected. When potassium ferrate and phenol mass ratio of 25:1, at pH = 9 under the conditions of oxidation after 20 minutes, CODMn removal rate reached 40.55%. In the oxidation-coagulation experiments, by changing the reaction stage of oxidation time, oxidation phase of the pH, flocculation time, flocculation phase of pH conditions,we study the flocculation mechanism of potassium ferrate. At the same time we found potassium ferrate removal of organic matter rely on its strong oxidability rather than flocculence. KEY WORDS: Potassium ferrate, Removal of phenol and COD, Micro-polluted water 太原理工大学硕士研究生学位论文1 第一章 文献综述与选题 1.1 我国水资源的概况 水是人类生产和生活不可缺少的物质，是生命的源泉，也是工农业生产和经济发展不可取代的自然资源。

水资源不仅影响、制约现代社会的可持续发展，还直接威胁人类的生存和发展，并由此引发战争因此水资源将成为 21 世纪全球资源环境的首要问题 继1972年联合国第一次人类环境会议发出“水将导致严重的社会危机”的呼吁以来，水资源问题不仅没有得到根本解决，反而愈来愈严重中国水资源问题更加严重，毫不夸张地说，21世纪水资源问题的解决关系到中华民族的繁荣兴旺，我们必须予以高度重视 1.1.1 我国水资源的特点 1．水资源总量丰富，但。