The effect of multi-rods helical system configuration on the reduction of chemical oxygen demand in textile wastewater in tubular electrocoagulation reactor

Abstract The electrocoagulation process is designed with a multi-rod helical system (MRHS) configuration in the cathode area. The objective of this research is to present a comprehensive overview of electrocoagulation techniques and applications employing a multi-rod helical system. The objective of this configuration is to provide a reference point for the industry about the efficiency and effectiveness of the electrocoagulation process. The study was conducted on a pilot scale in an on-site textile industry setting, allowing for a more practical and realistic assessment of the process. The efficacy of the treatment was evaluated in terms of its removal performance. the multi-rod helix system process demonstrated high efficiency in current utilization for the removal of chemical oxygen demand (COD) from textile wastewater through electrocoagulation. the findings suggest that the system unit is capable of enhancing pollutant removal and effectively reducing the chemical oxygen demand (COD) of textile wastewater. the pilot-scale configuration yielded the most optimal results in COD removal, with efficiencies ranging from 35 to 91% at pH 6-7, energy consumption between 0.25 and 1.69 kWh/m 3 , and current density between 465.28 and 823.19 A/m 2 .