Abstract

• In this research, the characterization and the removal of contaminants from alcohol distillery wastewater from industrial zone in Mandalay Region was performed. Wastewater sample was collected from alcohol industry, Mandalay Region. Some physicochemical parameters such as pH, colour, total solids, total dissolved solids (TDS), total hardness, dissolved oxygen (DO), biochemical oxygen demand (BOD) and chemical oxygen demand (COD) were determined. The contaminants from distillery wastewater were removed by using coagulants such as sugar bleaching powder, clinker, limestone and lime. The wastewater sample was treated with different dosages of coagulants. Then, the parameters such as turbidity, TDS and pH were analyzed. And then, the wastewater sample was treated with the effective dose of lime coagulant for various agitation times. Moreover, the decolourization of distillery wastewater by using coagulant such as Strychnos nux-vomica seeds and by applying microbial film method were performed. In microbial film method, four strains of two gram-positive bacilli and two gram-positive cocci were firstly isolated from wastewater of alcohol industry. These isolated bacteria were confirmed by standard bacteriological methods. The potential of isolated bacterial strains in treatment of wastewater were studied by applying microbial film methods. After treatment, the wastewater sample was analyzed by digital photo colorimeter (Model-312).