The electroplating industry is one of the major industries, which generate a large amount of wastewater containing heavy metals. Even though chemical treatment processes are suitable for treatment of this kind of wastewater, the high concentration of heavy metals necessitates more treatment before discharge into natural resources, as heavy metals are important sources of environmental pollution and they can form compounds, which are toxic even in very low concentrations. The only way to remove the metals is to change their chemical states by oxidation/reduction and precipitation, and recover them in an acceptable form. In the present paper studies have been carried out by ethylenediaminetetraacetic acid complexation of effluents, using cyclic voltammetry.