Use of distillery waste water as an organic fertilizer

Distillery waste water or spent wash is a major by-product released from the distilleries having considerable biological oxygen demand (BOD), chemical oxygen demand (COD), and electrical conductivity (EC). Spent wash is very fowl smelling, dark coffee colored waste water and is very acidic in nature. Spent wash contains very high concentrations of organic carbon, nitrogen, phosphorus and potassium. It also contains considerable amount of micro nutrients and plant growth hormones. The manurial potential of this waste water can be used successfully for increasing crop production by using it as a source of irrigation after proper dilution.