Abstract
The treatment of graywater has attained priority to engineers as these wastewater have the ability to be reused for non-potable purposes. In the present study, the use of batch-scale electro-coagulation (EC) is proposed for real graywater treatment using Iron (Fe) electrodes. The optimization and modelling has been carried out by using response surface methodology (RSM). The impact of pH, applied voltage and electrolysis time on EC performance was evaluated by calculating the reduction of chemical oxygen demand (COD). The optimum pH, applied voltage and electrolysis time were 8.67, 13.78 V and 60 mins respectively. Under these optimum conditions, the percentage COD removal and energy consumption was 70.09% and 0.04782 kWh/ kg COD removed respectively. The accuracy and reliability of the data predicted and calculated has been verified by ANOVA tool.
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