Journals Proceedings

Abstract

Electrochemical treatment of mixed raw industrial wastewater from the inlet of organized industrial district wastewater treatment plant was investigated using sacrificial aluminum electrodes in this study. A pole changer was used between the power supply and the electrochemical reactor to help use of all electrodes as anode. Studies on the parameters such as current density, supporting electrolyte concentration and initial pH, which have significant effects on COD removal and hence the energy consumption, had been performed previously. Coagulant aids, poly aluminum chloride and Kerafloc, were used in different concentrations to observe their effects on COD removal efficiency and the energy consumption. Three different concentrations for both coagulant aids were tested: 10, 20, and 30 mg/L. According to the results, the concentration of both coagulant aids were 30 mg/L to achieve highest removal efficiencies, lowest energy consumptions and sludge productions.