Effect of initial pH on biodegradation of distillery wastewater by batch process using anaerobic mixed consortia.

Biodegradation of distillery wastewater is dependent on initial pH. In this present research, the effect of initial pH from 5.0 to 6.5 on biodegradation of distillery wastewater using anaerobic mixed consortia by batch process was investigated. The parameters like chemical oxygen demand (COD) removal efficiency, oxidation reduction potential (ORP), final pH, total phenol content, total protein were determined to study the biodegradation of distillery wastewater. From the experimental results, maximum COD removal efficiency of 91.96 % was obtained an initial pH 6.0. Maximum phenol removal, protein removal and decolourization percentage recorded were 88.76%, 71.04% and 55.23% respectively at initial pH 6.5. It could be concluded that initial pH 6.5 are favourable for maximum biodegradation of distillery wastewater.