Performance Evaluation and Upgradation of ETP at KMF Dairy Bidar

Dairy industry is most polluting food industry in terms of large amount of water use. About 2-3liters of water is required to process 1liter of milk. Such untreated wastewater pollutes land and river system so that proper treatment of dairy wastewater is necessary before disposal in environment. Considering the above stated implications an attempt has been made to evaluate the performance of effluent treatment plant at KMF dairy, Bidar. Samples were collected from six points; Raw wastewater (p1) to treated effluent tank (p5) including treated water (p6) to evaluate the performance of ETP. Parameters analyzed for evaluation of performance of ETP are pH, Total solids, Dissolved solids, Suspended solids, Volatile solids, BOD5, COD, Oil and grease and Nitrate. The present study shows BOD5, COD, Total solids removal efficiency to be 90.5%, 89%, and 67% respectively. The performance of ETP was also evaluated and the quality of the reclaimed wastewater was compared with Karnataka state pollution control board (KSPCB) standards to determine its suitability for reuse. The BOD and COD values are exceeding the permissible limits prescribed in SPCB for land disposal; hence it is suggested to KMF dairy authority to upgrade/modify the secondary treatment system.