PERFORMANCE EVALUATION OF EXISTING WASTE WATER TREATMENT PLANT

B.G.Mahendra, Prema

Abstract: Dairy industry is one of the major industries causing water pollution. In India, dairy industry generates about 6-10 L of wastewater/L of milk processed, depending upon the process scheme and products manufactured. Poorly treated wastewater with high levels of pollutants caused by poor design, operation or maintenance of treatment systems creates major environmental problems, when such waste water is discharged to surface water or on land. Considering the above stated implications an attempt has been to evaluate the performance of wastewater treatment plant (WWTP) at KMF dairy, Gulbarga. Samples were collected from seven points; Raw waste water [P1] to Secondary clarifier [P6] including the treated effluent [P7] to evaluate the performance of WWTP. Parameters analyzed for evaluation of performance of WWTP are pH, Acidity, Alkalinity, COD, BOD5 @ 20° C, TS. Tests were performed to find the fate of pollutants in WWTP. The present study shows that COD removal efficiency of WWTP was found to be 49.89% and BOD5 removal efficiency of WWTP was found to be 74.07%. Though COD efficiency is high but its concentration in the treated effluent exceeds the limit prescribed by the regulatory authorities. Hence it is recommended to redesign the WWTP to achieve better performance

Keywords: Waste water, performance, organic content, dairy industry

DOI: https://doi.org/10.15623/ijret.2013.0213053