Abstract
The implementation Of a three-phase fluidized bed bioreaclor (TPFBB) in food- processing wastewater (FPW'W) treatment is reported. This study includes the modification Of the air distributor (plate design and gas-liquid mixing) for the bioreactor and resting of its aeration efficiency under different liquids. The aeration efficiency for wastewater samples collected from a soft drink processing industry and tannin processing industry (TANWA T) and tap water were compared. The aeration efficiency parameters studied include bed expansion, air holdup. volumetric oxygen mass transfer coefficient, and alpha factors. The variation of these parameters With air flow rates were studied at different liquid heights, liquid velocity and solids loading. The volumetric oxygen transfer coefficient was observed to range between (140-260 w') for tap water, between 120-200 for FPWW' and 100-180 for T wastewater. Higher alpha factors were observed for FPWW (O. 85-0.95) than for the case of TANWAT wastewater (< 0.7). The optimum solid loading was established to be 5.0 kg based on the turning point on the variation Of the volumetric oxygen transfer coefficient with biomass loading. The modified distributor design has improved the aeration efficiency of the TPFBB
Recommended Citation
Manyele, S. (2004). AERATION EFFICIENCY OF A THREE-PHASE FLUIDIZED BED BIOREACTOR DURING FOOD INDUSTRY WASTEWATER TREATMENT. Tanzania Journal of Engineering and Technology (TJET), 27(2). https://doi.org/https://doi.org/10.52339/tjet.v27i2.353
Publisher Name
University of Dar es Salaam