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
