摘 要现代工业发展迅速,氟化物越来越普遍的被利用于工业生产中。比如金属冶炼、电子工业、玻璃制造、电镀生产、氟化物合成工业等工业生产中都需要用到氟化物。虽然这些工业的蓬勃发展能够促进社会的进步,但其过程中产生的含氟废水的排放量也在逐年上升。严重威胁着周围的环境和人。目前,处理含氟废水比较常用的方法主要是化学沉淀法和吸附法,其中化学沉淀法因其成本低下、技术成熟等优点而得到了普遍的应用。但含氟废水经过化学沉淀法处理后会产生大量的含氟污泥,如何妥善处理这些含氟污泥也是含氟废水处理过程中的一大难题。如果直接填埋,不但浪费了这种特殊的固体废物资源,还极易对环境造成二次污染。所用,为了实现含氟污泥的资源化、稳定化、减量化,特对处理含氟废水过程中产生的含氟污泥进行分析研究。87229
本次实验采用的是石灰石法处理含氟废水,并研究分析了影响其除氟效率的因素。考虑到此方法中影响石灰去除氟化物效率的因素较多,因而重点对其中的3个因素进行了研究分析。同时重点研究了处理含氟废水过程中所产生的氟化钙污泥的理化特性,讨论了氟化钙污泥资源化的合理途径,并设计了用含氟污泥与混合土料制作的陶土来烧制陶瓷。
毕业论文关键字:含氟废水;石灰石法;含氟污泥;污泥资源化
Abstract With rapid developent of modern industry, more and more common fluoride is utilized in industrial production。 Such as metal smelting, the electronics industry, glass manufacturing, electroplating, fluoride synthesis industry and other industrial production will need to use fluoride。 Although the vigorous development of industry can promote social progress, but its emissions generated in the process of a fluorine-containing waste water is also increasing year by year,which brings serious threat to the environment and the people around them。 At present,the common methods for processing wastewater containing fluoride are mainly chemical precipitation and adsorption, wherein the chemical precipitation method has been widely used because of its low cost and mature technology。 However,after a chemical precipitation process with fluorine-containing waste water,it will produce large amounts of fluorine-containing sludge, how to properly deal with these fluorine-containing fluorine-containing sludge wastewater treatment process is also a major problem。 If landfill directly, the choose is not only a waste of special solid waste resources, but also easy to cause secondary pollution to the environment。 In order to achieve fluorine-containing sludge resources, stabilization, reduction, especially for the treatment of wastewater generated in the process of a fluorine-containing fluorine-containing sludge were analyzed。
The experiment uses a limestone treatment of wastewater containing fluoride, and analyses the factors what affects the efficiency of fluoride removal。 In view of this process Lime removal efficiency of fluoride many factors, which focuses on one of the three factors were analyzed。 At the same time we focus on the physicochemical properties of fluorine treatment of wastewater generated in the sludge of calcium fluoride, and discussed the resource rational way of calcium fluoride sludge ,what’s more,designed to use a fluorine-containing sludge mixed with clay mixed soil material to fire ceramics。
Keywords: Fluoride wastewater;limestone method;mud with fluorine;sludge resources
目录
第一章 绪论 1
1。1研究背景 1
1。1。1氟在自然界中的分布 1
1。1。2氟对环境的影响 1
1。1。3含氟废水的主要来源 2
1。2处理含氟废水的研究进展 2
1。3废水处理后污泥的处置与资源化利用 3 石灰石法处理含氟废水及其污泥资源化研究:http://www.youerw.com/huaxue/lunwen_129814.html