Paper Title
The Biodegradability Of Textile Wasewater In Anaerobic/Aerobic Sequencing Moving-Bed Biofilm Reactors The Biodegradability Of Textile Wasewater

Abstract
In this study, the treatability of simulated textile effluent including Remazol Brilliant Violet 5R azo dye was investigated in anaerobic–aerobic sequencing moving-bed batch biofilm reactors. Additionally, the competitive biochemical reaction between sulfate and azo dye as electron acceptor in the presence of acetate was also examined. Anaerobic and aerobic reactors had 8 h and 24 h cycle times, respectively. The both reactor performances was determined by monitoring color, sulfate and total dissolved carbon removal efficiencies, color removal rate, aromatic amine formation/removal and pH profile. Sulfate and azo dye bioreductions simultaneously took place in anaerobic condition and the percentage sulfate and color removals by the anaerobic microorganisms were 94.4% and 50%, respectively. The removal of benzene-based and naphthalene-based aromatic amines resulted from anaerobic decolorization process was observed at the aerobic reactor. The results indicated that anaerobic/aerobic sequencing moving-bed biofilm reactors (MBBRs) were effective in terms of color, sulfate, and DOC removal with aromatic amine degradation. Keywords—Aerobic process; anaerobic process; aromatic amine; azo dye; moving-bed batch biofilm reactors; textile wastewater