Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
Vol. 11, No. 3, 2007, pp. 97-102
Bioline Code: ja07073
Full paper language: English
Document type: Research Article
Document available free of charge
Journal of Applied Sciences and Environmental Management, Vol. 11, No. 3, 2007, pp. 97-102
© Copyright 2007 - Journal of Applied Sciences & Environmental Management
Starch Wastewater Treatment in a Three Phase Fluidized Bed Bioreactor With Low Density Biomass Support|
Rajasimman, M. & Karthikeyan, C.
Aerobic digestion of starch industry wastewater was carried out in an inverse
fluidized bed bioreactor using low density (870 kg/m3) polypropylene particles. Experiments were
carried at different initial substrate concentration of 2250, 4475, 6730 and 8910mg COD/L and for
various hydraulic retention time 40, 32, 24, 16 and 8h. Degradation of organic matter was studied at
different organic loading rate by varying the hydraulic retention time and initial substrate concentration.
From the results it was observed that the maximum COD removal of 95.6% occurs at an organic loading
rate of 1.35 kg COD/m3/d and a minimum of 51.8% at an OLR of 26.73 kg COD/m3/d. The properties of
biomass accumulation on the surface of particles were also studied. It was observed that a constant
biomass loading was achieved over the entire period of operation.