Assessment of Waste Water Treatment Plant Efficiency at Ama Breweries Plc Enugu State, Nigeria

Research areas: Year: 2014
Type of Publication: Article Keywords: WWTP, Effluent Quality, AMA Breweries
  • Ogwo, O.G P.A. and Ogu
Journal: Journal of Environmental Sciences And Policy Evaluation Volume: 4
Number: 2 Pages: 1 - 24
Month: December
The Waste Water Treatment Plant (WWTP) at AMA Breweries is a State of the art outfit put in place to meet the regulatory compliance for National Effluent Limitations in Nigeria for Breweries. The objective of the study was to investigate the quality of effluent discharge from AMA Brewery and establish whether the operation of Waste water Treatment Plant is efficient in removing the solid wastes and other potential pollutants originating from the combined Brewery effluent. Wastes water samples were collected at the inflow into the WWTP, outflow from the WWTP, settling pond and discharge channel and analyzed for pH, EC, TSS, TDS, hardness, alkalinity, acidity, nitrate, chloride, phosphate, sulphate, As, Al, Cr, Cd, Mn, Zn, Ni, Cu, Pb, Fe, Mg, Ca, BOD, COD, DO, total plate count and total coliform using standard methods. Results obtained were analyzed and compared with National Effluent Limitation Guidelines for Breweries in Nigeria. Results showed that EC, TSS, alkalinity, COD, total plate count and total coliform were significantly above the permissible limits, while other parameters were within the limits. However, there were statistically no significant differences between the inflow and discharge flow parameters. Conclusively, the WWTP at AMA Brewery was not 100% efficient in meeting the standards for maximum allowable quality that could be discharged into inland water. Therefore, the filtering systems in WWTP should be overhauled to reduce the high suspended solid particles and debris. The filtration systems should be installed at points other than the inlet into the WWTP to reduce the pressure on the screens. This would increase the useful life of the screen.