ABSTRACT
It is common that Biological Activated Carbon (BAC) treatment of wastewater has been considered to have some advantage over the conventional processes. The major advantage of BAC system is that the recalcitrant organic matter removed from water is first adsorbed into the macro pores, where it is detained long enough to promote its slow biodegradation by attached bacteria (Lourenco N.D. et al. 2000). This property of activated carbon leads most of the time to continuous regeneration of the Granular Activated Carbon (GAC) (Yapsakli K. et al. 2010). The key difference of GAC from other potential carriers of biomass is its adsorptive property. The ability of a filter to adsorb and retain organics may result in higher biodegradation efficiency (Aktas Ö. et al. 2006).
