Treatment of Automobile Service Station Waste Water using ECC

The present study was conducted to investigate the treatment of service station wastewater using electrochemical coagulation techniques. The performance of ECC treatment on wastewater was examined for operating conditions like cell voltage of 10, 20 and 30V at electrode spacing of 1cm, 2cm and 3cm using aluminum and stainless steel for removal of COD, TDS, Turbidity and pH. The pH , COD, TDS, Turbidity were measured in 180 minutes of electrolysis time, and 30-minute intervals from the sample withdrawal. For the treatment of waste water from car service stations employing SS electrodes, the ideal electrolysis period to achieve maximal COD removal was 180 minutes. Remarkable removal efficiency were obtained for 3cm electrode distance employing SS electrodes, demonstrating 80% of COD removal, 70% of TDS removal, and 71% of Turbidity removal. When treating vehicle wastewater with aluminum Al electrode more removal rate were observed, with 91% of COD removal, 85% of TDS removal, and 75% of Turbidity removal. The sludge obtained at optimum condition was characterized using EDS, XRD and SEM to know the elemental composition, structure and morphology and the results indicated that the sludge has reuse capabilities.