Removal of Reactive Dyes from Textile Dyeing Industrial Effluent by Ozonation Process

The wastewater contained reactive dyes was ozonated in a batch reactor. In the experiment, the tank reactor which controls the temperature was 35 °C. and water samples were collected at 5, 10, 20, 30, 45, 60, 90,120, 150, 180, 240, 300 and 360 minutes, respectively. Results of decolorization showed that the color of wastewater is reduced when the reaction times increased. At reaction times 5 and 120 minutes, the decolorization efficiency is 32.83% and 56.82%, respectively. However, the wastewater after primary experimental still have color although the intensity of color will be soft. The ozonation can reduce color in the wastewater more than 90% at reaction times 6 hours.