镀镍废水电解处理工艺及废水阴极极化曲线分析  

Treatment of Nickel Plating Wastewater by Electrolysis Method and Analysis of Cathodic Polarization Curve of Wastewater

作　　者：李建三[1] 陈国英 卫海童 LI Jiansan;CHEN Guoying;WEI Haitong(School of Mechanical ＆ Automotive Engineering,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《电镀与环保》2018年第4期74-77,共4页Electroplating & Pollution Control

摘　　要：采用电解法处理镀镍废水,考察了电流密度、温度、pH值对Ni^(2+)去除率的影响,并对电解处理后的镀镍废水的阴极极化曲线进行了研究。结果表明:随着电流密度的增大,Ni^(2+)的去除率增大,阴极极化曲线中析氢段出现上移,镍平衡线下移;随着温度的升高,Ni^(2+)的去除率降低,阴极极化曲线上移;随着pH值的升高,Ni^(2+)的去除率增大,阴极极化曲线中镍电极电位降低。Nickel plating wastewater was treated by electrolysis method. The influences of current density, temperature and pH value on the removal rate of Ni2＋ were studied, and the cathodic polarization curve of nickel plating wastewater after electrolysis treatment was analyzed. Results showed that, with the increase of current density, the removal rate of Ni2＋ increased, the hydrogen evolution section of the cathodic polarization curve moves upward and the equilibrium line of nickel moves down. With the rise of temperature, the removal rate of Ni2＋ decreased and the cathodic polarization curve moves upward. With the increase of pH value, the removal rate of Ni2＋ increased and the potential of nickel electrode decreased in cathodic polarization curve.

关 键 词：镀镍废水 电解法 阴极极化曲线 去除率 

分 类 号：X781.1[环境科学与工程—环境工程]