Performance of inverse anaerobic fluidized bed reactor for treating high strength organic wastewater during start-up phase

Bioresource Technology
R Sowmeyan, G Swaminathan

Abstract

The aim of this work is to report on the physical characteristics of carrier material (perlite), biomass growth on the carrier material and the biogas production during an apparent steady state period in an inverse anaerobic fluidized bed reactor (IAFBR) for treating high strength organic wastewater. Before starting up the reactor, physical properties of the carrier material were determined. One millimeter diameter perlite particle is found to have a wet specific density of 295 kg/m(3) with specific surface area of 7.010 m(2)/g. This material has provided a good surface for biomass attachment and development. The biofilm concentration (in terms of attached volatile solids (AVS)) attached to carrier material was found to be 0.66 g(AVS)/g(solid). Most particles have been covered with a thin biofilm of uniform thickness. Once the inverse anaerobic fluidized bed system reached the steady state, the organic load was increased step wise by reducing hydraulic retention time (HRT) from 2 days to 0.16 day, while maintaining the constant feed of chemical oxygen demand (COD) concentration. This system has achieved 84% COD removal and reached the biogas production of 13.22 l/l/d at an organic loading rate (OLR) of 35 kgCOD/m(3)/d.

References

Jun 23, 2000·Journal of Biotechnology·C NicolellaJ J Heijnen
Aug 31, 2006·Water Science and Technology : a Journal of the International Association on Water Pollution Research·D Jeison, J B van Lier

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Citations

Sep 27, 2014·Bioresource Technology·Mohamed Ali WahabRenaud Escudié
Jan 28, 2010·Journal of Zhejiang University. Science. B·Xiao-guang ChenMahmood Qaisar
Aug 21, 2013·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Laura M SiqueiraEdson L Silva

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