铁炭微电解材料的制备及其对难降解印染废水的处理研究

发布时间：2018-08-30 17:01

【摘要】：印染废水来源于印染工业中染色、整理、印花等各个环节,其成分复杂性高,浓度较大,色度高且含有多种毒性有机物而成为最难处理的工业废水之一。本文使用铁炭微电解法对印染废水的处理进行了研究,对传统铁炭微电解材料进行了改性处理。用活性炭粉、还原铁粉及多种金属氧化物为添加剂为主要原料,通过改变各种原料比例,调整烧结时间和温度,制备出一种性状稳定且能效较高的新型铁炭微电解材料。另外,为增强新型微电解材料对印染废水的处理效果,本实验利用微电解材料联合电化学反应,通过实验筛选出最优工艺条件使新型铁炭微电解材料处理印染废水的效果得到更大的提高。主要研究内容和结果如下:1.对新型铁炭微电解法处理印染废水的原理进行了探讨,说明新型铁炭微电解法处理印染废水的机理是包含着电化学反应、絮凝作用、物理吸附、氧化还原反应、金属氧化物的催化作用、电沉积等多种反应于一体的复杂过程产生的综合效应并据此确定了新型铁炭微电解材料的原料组成。2.本实验用活性炭粉末、还原性铁粉和多种金属氧化物添加剂,通过多次试验确定最佳反应条件,制备出一种高效稳定的新型铁炭微电解材料,结果证明按Fe:C为1:1,添加剂按氧化铜:亚氧化钛:氧化镍:氧化锰:氧化钙:高岭土为3:5:2:1:1:15,致孔剂含量3.5%,以光学纯水分作为黏合剂,在1000℃下烧结2小时制备的新型铁炭微电解材料性能最佳。3.实验采用单因素分析和正交实验的方式对新型铁炭微电解材料处理印染废水得出的实验结果为:pH环境为4,投加量为0.2kg/L,反应2小时左右,测得新型铁炭微电解材料处理印染废水的效果最佳。4.实验采用单因素分析和正交试验的方式对新型铁炭微电解材料联合电化学反应处理印染废水得出的实验结果为:采用铁电极,电压为5V,pH环境为4,投加量为0.2kg/L,反应2小时左右,测得的处理效果最佳。
[Abstract]:Printing and dyeing wastewater comes from dyeing, finishing, printing and other links in the printing and dyeing industry. It is one of the most difficult industrial wastewater to treat because of its high complexity, high concentration, high chroma and many toxic organic compounds. In this paper, the treatment of printing and dyeing wastewater by iron-carbon microelectrolysis was studied, and the traditional iron-carbon micro-electrolysis material was modified. A new iron-carbon microelectrolysis material with stable properties and high energy efficiency was prepared by changing the ratio of various raw materials and adjusting the sintering time and temperature by using activated carbon powder, reduced iron powder and various metal oxides as main raw materials. In addition, in order to enhance the treatment effect of new micro-electrolysis material on printing and dyeing wastewater, this experiment uses the micro-electrolysis material to combine the electrochemical reaction. The optimum technological conditions were screened out through experiments to improve the effect of new iron-carbon micro-electrolysis material on dyeing and printing wastewater treatment. The main contents and results are as follows: 1. The principle of treatment of printing and dyeing wastewater by new iron-carbon micro-electrolysis was discussed. The mechanism of new iron-carbon micro-electrolysis for treating printing and dyeing wastewater was described, which included electrochemical reaction, flocculation, physical adsorption, redox reaction. Based on the complex process of metal oxide catalysis and electrodeposition, the raw material composition of new iron-carbon micro-electrolysis material was determined. In this experiment, a new kind of iron carbon microelectrolysis material with high efficiency and stability was prepared by using activated carbon powder, reductive iron powder and various metal oxide additives, and the optimum reaction conditions were determined through many experiments. The results show that the Fe:C is 1: 1, the additive is copper: titanium oxide: nickel oxide: manganese oxide: calcium oxide: kaolin is 3: 5: 2: 1: 1: 15, the content of pore-forming agent is 3.5%, and the optical pure water is used as adhesive. The new iron-carbon microelectrolysis material sintered at 1000 鈩，

本文编号：2213705