Anaerobic Biodegradation of Beer Production Wastewater at a Field Scale and Explotation of Bioenergy Potential of Other Solid Wastes from Beer Production

In this study, field-scale EGSB bioprocess with a working volume of 2280 m 3 was examined for 1 year in Türk Tuborg Bira ve Malt Sanayi A.Ş. factory, Izmir, Turkey.The aim of the study was to evaluate the performance of the EGSB reactor during anaerobic digestion of brewery wastewater, which was not reported before at a field scale.Even though, no external heating was applied throughout the study, the COD (Chemical Oxygen Demand) removal efficiency of the EGSB reactor varied between 81-86% corresponding to an effluent COD concentration of 1100 mg l -1 on the average, which is in compliance with the discharge standard to publicly owned sewage channel.In addition solid wastes which have high organic content sold as animal feed are investigated for anaerobic digestion in Türk Tuborg, Izmir, Turkey.These wastes in the form of solid material were aimed to produce extra bioenergy via biogas technology.Biochemical Methane Potential (BMP) tests indicated that 45 m 3 biogas productions per ton of malt wastes were possible via daily gas production potential of 4400 m 3 biogas.The valorization of these malt wastes mean that the current biogas production could be doubled and the bioenergy content of the whole organic wastes could take 50% share in the whole energy budget, which could realize tremendous savings in energy expenditure and carbon emissions.The results obtained in this study demonstrated that the waste problem in any industry could be turned into environmentally friendly solution and Türk Tuborg is a reference process for similar facilities.