Ozonation Associated with Nanofiltration as an Effective Procedure in Treating Dye Effluents from Textile Industries with the Help of a Bubble Column: A Review

摘要

Persistent chemicals in wastewater cannot be degraded by primary and secondary treatments. So the need of tertiary treatment processes such as ozonation. Primary treatment comprises flocculation and coagulation while secondary treatment comprises activated sludge process or filtration through trickling filters. Tertiary treatment process comprises ozonation, membrane filtration and adsorption. The importance of ozonation as an advanced oxidation process is due to the fact that ozonation process is environmental friendly and sound. Our review will delineate the research work done in the area of ozonation, primarily the ozonation of dye effluent in wastewater from textile industries.