电渗析法处理电镀废水

论文编号:HG127 论文字数:8810,页数:23

摘 要：为了得到有用的参数来治理电镀废水，我们研究了电渗析法处理模拟电镀废水。论文论述了用电渗析进行电镀废水的金属离子分离方法。考察了含Ni2+模拟电镀废水和含有Cu2+、Ni2+两种重金属离子废水的分离情况。在分离条件上，选取不同料液浓度、流量、电流密度，以考察它们对离子分离效果的影响。结果表明：在原料浓度适中(Ni2+浓度0.50g/L)，料液室流量适中(80L/h)，电流强度1.5A，对迁移结果有利，Ni2+能全部迁移过膜；Cu2+、Ni2+混合液也可以几乎迁移完全，在一定范围浓度的混合液中，Ni2+迁移速率比Cu2+快。这种方法处理后的水能做到再利用，有很好的实际效用。

关键词：电镀废水；镍；铜；电渗析

Abstract:To obtain useful data for treatment of the wastewater discharged from electroplating processes, we investigated the effects of operating parameters, such as the initial concentration of dilute solution, the flow velocity and the current, on removal rate of Ni2+ in the model solutions using an electrodialysis system. Ni2+ in the solutions were effectively removed by the electrodialyzer. The initial concentration of dilute solution, the flow velocity and the current strongly affected the performance of the electrodialysis system.The experimental results: when the material concentration of dilute solution (Ni2+ concentration of 0.50g/L), the flow velocity of complexing room 80L/h and the current (1.5A)are considered the best condition.The mixed solution of Cu2+ and Ni2+ were almost removed. The removal rate of Ni2+ is quicker than Cu2+ in mixed solution. Water and solution can recycle under this method of treatment.This method has a very promising approach.

Keywords: Galvanization waste water; Nickel; Copper; Electrodialysis

目 录

中文摘要I

英文摘要II

目录III

1．绪论1

1.1 化学法沉淀1

1.2 电解法2

1.3 膜法3

1.4 吸附法4

1.5 离子交换法4

1.6 生物法4

1.7 零排放的探索5

2．实验部分6

2.1 电渗析原理6

2.2 实验设备6

2.3 实验试剂与原料7

2.4 实验操作7

3．实验结果与讨论8

3.1 波长扫描8

3.2 工作曲线8

3.3 干扰实验9

3.4 单因素实验11

3.5 混合液实验13

3.6 电效率计算14

3.7 极限迁移量15

4．总结与展望16

致谢17

参考文献18