具有重金属捕集功能的絮凝剂的教程.doc

具有重金属捕集功能的絮凝剂的研究 摘 要 近年来，随着工业的发展，排入环境中的废水所含重金属离子已成为最重要、最常见的污染物之一。重金属离子的常规处理方法是采用沉淀法，但药剂用量大，需调整 pH 值，污泥量多，而且废水中的配位剂会干扰这些离子的沉淀，需预处理去除。近年来发现，将重金属离子的某些强配位基团通过反应连接到高分子絮凝剂分子中可以赋予其对重金属离子的捕集功能，由此合成了一种新型“高分子重金属絮凝剂”将这种高分子重金属絮凝剂用于水处理的絮凝单元，可减少后续处理单元数，降低处理成本，改善处理效果，使重金属离子的处理变得简单易行。 本文概括了高分子重金属絮凝剂在废水处理中的应用的必威体育精装版进展及目前的研究方向，包括了各类絮凝剂及废水处理的作用机理。然后以目前两种必威体育精装版的高分子重金属絮凝剂CSAX、PEX为例，介绍它们的制备机理、作用机理、它们处理重金属时的效能来全面的分析解具有重金属捕集功能的高分子絮凝剂。 关键词：重金属离子；捕集；絮凝剂；发展新方向 Heavy metal trapping flocculant function Process Research Abstract In recent years, with the development of industry, contained in the wastewater discharged into the environment of heavy metal ions has become one of the most important,the most common pollutants. The conventional approach is the use of heavy metal ion precipitation method, but a large amount of reagent required to adjust the pH value, the quantity of sludge, and the complexing agent in the water will interfere with the precipitation of these ions to be removed by pretreatment. In recent years, found that certain strong complexing metal ions of groups connected to the polymer flocculant molecule can give their trapping function of heavy metal ions by the reaction, thus synthesized a new heavy metal flocculant this kind of heavy metal flocculant flocculation units for water treatment can reduce the number of post-processing unit, reduce processing costs, improve treatment effect, so that the treatment of heavy metal ions becomes easy. This paper outlines the application of heavy metal flocculant latest developments and current research in wastewater treatment, including the mechanism of action of various types of flocculants and wastewater treatment. Then present the two latest heavy metal flocculant CSAX, PEX, for example, describes the preparation of the mechanism of their mechanism of action, heavy metals when they are processing performance to a comprehensive analysis of polymer flocculant solution with heavy metal trapping capabilities. Key words：heavy metal evelopment of