Removal of Diamozol Red ED-3 from Simulated Textile Wastewater in Membrane Bioreactor (MBR) System

Abstract

In this research, the decolourization process of Diamozol Red ED-3 textile dye by using activated sludge collected from wastewater treatment facility in Bilecik First Organized Industry Zone was examined in membrane bioreactor (MBR) system. The Lab/Pilot Scale MBR system had a working volume of 170 L and was equipped with a coarse and fine air bubble creation mechanism for membrane and biological aeration, respectively. The temperature of the aeration tank was controlled at 25±1°C, the pH value and the concentration of DO was kept, respectively, in the range of 6.5-7.0 and 2.0-2.5 mg/L in the aeration tank. The initial dye concentration and COD concentration of the synthetic wastewater prepared for decolourisation process were 50 and 952 mg/L, respectively. The dye concentration, COD concentration value were measured daily in effluent to assess the removal efficiency. Most of the analytical techniques used in this study were mentioned in the standard methods. At the end of the study treatment percentage colour removal was approximately 76% and COD removal was 79% in 7 days. The results obtained from this study showed that textile dyes can be effectively decolorized by the activated sludge in MBR system.