Performance Study Of Fixed Bed Hybrid Bioreactor Treating Synthetic Carbonaceous Wastewater

IJEP 39(3): 226-232 : Vol. 39 Issue. 3 (March 2019)

Sushovan Sarkar

Dr. Sudhir Chandra Sur Degree Engineering College, Department of Civil Engineering, Kolkata-700 074


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.


Fixed bed hybrid bioreactor, Biofilm, Volumetric organic loading, F/M ratio, Synthetic carbonaceous wastewater