Effective management of wastewater by the distilleries in Tamil Nadu A case study

There are 15 distilleries in Tamil Nadu under operation. The distillery effluent (mainly spent wash) is dark brown in colour and acidic in nature. It contains high percentage of dissolved organic, inorganic matter and potassium. Till year 2000 these units had disposed the partly treated effluent on land as fertilizer and stored in lined lagoon for solar evaporation.