Due to the highly hazardous natures of solid and liquid wastes generated by the metal finishing industry and the regulatory pressures on discharge limits, pollution prevention measures have become important tools in achieving environmental and economic improvements within the metal finishing industry (Daylan et al.,2013). Physical-chemical treatment is effective and by far the most widely-used process for wastewater treatment in the electroplating industry because it is relatively simple and inexpensive to implement and operate (Ku and Jung, 2001). During the precipitation processes, chemicals are designed and used to react with undesired compounds to form insoluble precipitates (Fu and Wang.2011).