Electrocoagulation Treatment of Municipal Waste Water

This study is an attempt to treat municipal wastewater by electrocoagulation (EC) process where aluminium is used as sacrificial electrode. The effect of different operating parameter such as pH, current density, inter electrode gap, and reaction time on COD and color removal has been studied. The operating condition pH of 6, current density of 89 A/m2, electrode of 20 mm and reaction time of 20 minutes was found optimum. At this condition maximum COD removal of 96% and color removal of 90% were achieved. Hence it is demonstrated that EC process is well applicable to treat municipal wastewater.