Evaluation of Magnetic Stirring and Aeration on Electrocoagulation Performance in Actual Industrial Treatment

Agitation was a significant factor in achieving the high performance of electrocoagulation (EC) system. Three EC systems with four parellal monopolar Al electrodes were established to clarify influence agitation methods on pollutants removal efficiency; magnetic stirring, continuous aeration, and combination stirring aeration. The aim this work maximize industrial wastewater treatment short detention time understand mechanisms that occurred different systems. coolant from aluminum product industry represented as wastewater. hybrid stirring-aeration system obtained lower COD compared aeration Although can cause an increase due complete circulation effective coagulant formation Fe (OH), however, negatively affected CE. possible reason excessive led rapid mixing solution, then coagulants insufficient form flocs precipitate. best observed system, followed by control (without agitations), respectively, 15 min. Furthermore, all could achieve excellent 91% when sufficient (eg, 45 min for system). decreasing number efficiency, whereas NaCl additive insignificantly affected.