Experimental Study of Electrocoagulation for the Treatment of Car Wash Wastewater Effluents
Volume Title: 1
Authors
1M.S. student, Water and Wastewater Laboratory, Chemical Engineering, University of Guilan, Rasht, Guilan, Iran
2گروه پژوهشی مهندسی آب و محیط زیست پژوهشکده حوزه آبی خزر، دانشگاه گیلان، رشت، ایران
3Department of Chemical Engineering. Factualy of Engineering. University of Guilan, Rasht, Iran
Abstract
Due to the presence of complex compounds in car wash wastewater such as detergents, high levels of oils, grease, gasoline residues, metals, organic matter and particles, such as dust, carbon and salt, this type of wastewater is difficult to treat. In this experimental project electrochemical coagulation with Aluminium as both electrodes was investigated for the treatment of a real car wash wastewater. The influence of main operational parameters such as current density, electrolysis time and pH on the COD, Turbidity and EC removal effiencies have been studied during electrocoagulation process. Aluminum electrocoagulation at optimal experimental conditions: pH 8.5 with voltage of 25 V for 44 min and electrodes separation distance of 3.5 cm was obtained 68.9% and 90.17% of COD and turbidity removal efficiency, respectively. The effectiveness of electrocoagulation process for the treatment of car wash wastewaters was proved by experimental achievements. Finally, the results represented the technical possibility of electrocoagulation process applying aluminum electrodes as a reliable method for removal of pollutants from car wash wastewaters.
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