Performance Study Of Fixed Bed Hybrid Bioreactor Treating Synthetic Carbonaceous Wastewater

A laboratory scale fixed bed hybrid bioreactor of volume 15 L was fabricated with perspex sheet as an attached surface. The biofilm was developed on a frame made by combining nine angular fins with equal angular spacing. Synthetic carbonaceous wastewater was continuously fed with HRT ranging between 4-8 hrs, COD between 150250 mg/L and biomass concentration in the range of 2000-3500 mg/L. The effluent COD, as well as the biomass concentration, was monitored for each continuous run until quasi-steady state condition reached. In order to judge the performance of the hybrid bioreactor, two important operating parameters, namely volumetric organic loading rate and F/M ratio have been taken into consideration. Fixed media support plays an important role to accommodate more and more attached biomass which enhances the removal of BOD/COD from wastewater. The effluent sample and reactor content were taken for measuring final COD concentration and steady state suspended biomass concentration, respectively.