摘要：The present study deals with analysis and investigation of the treatment of soap & detergent industry wastewater by ozonation process. The results obtained concerning the optimum conditions of ozone treatment dose and contact time have been used for the removal of parameters such as colour, COD, BOD, TDS and other parameters. The ozonation process for the treatment of soap and detergent wastewater is effective. A dose of 19 mg/L, 21.58 mg/L and 30.70 mg/L ozone gives overall percentage of COD and colour reduction of 50.8%, 53.4%, 60.8% and 52.6%, 57.4%, 61.8% respectively at ozone reaction time. The total COD and color reduction depends on ozone concentration and functional groups present in wastewater. In addition, optimal parameters of ozonation process were determined to be 19 mg/L, 21.58 mg/L and 30.70 mg/L ozone doses. At all three ozone doses the turbidity, COD, BOD, alkalinity, colour and suspended solid removal reached 58.6%, 55%, 55.4%, 32%, 57.2% and 60% under selected conditions, respectively. But in this study, the total solids, total dissolved solids and dissolved oxygen increased up to 8.1%, 54.1% and 36% respectively after ozonation and the odour of wastewater does not change in all investigations. Thus, this study might offer an effective way for wastewater treatment of soap and detergent industry.
关键词：Ozonation; COD; BOD; Colour; Turbidity; Soap and detergent industry; Treatment process
