Influence of the type of organisms on the biomass hold-up in a fluidized-bed reactor |
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Authors: | P Timmermans A Van Haute |
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Institution: | (1) Instituut voor Industriële Scheikunde, de Croylaan 2, B-3030 Heverlee, Belgium |
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Abstract: | Summary In the last few years, the use of fluidized-bed reactors for biological wastewater treatment has got increasing attention. In 1981, Shieh et al. proposed a model to predict the biomass concentration in a fluidized-bed reactor. From this model one can see that the biofilm density plays a very important role in determining the total biomass hold-up. In this article the influence of the type of carbon source on the biomass concentration, and as a consequence the type of organisms selected, is studied. The growth of a filamentous, budforming bacteria in a reactor treating nitrate rich surface water supplied with methanol as carbon source, results in a biomass concentration only half of the concentration which can normally be obtained in a fluidized-bed reactor treating synthetic wastewater; in this latter case rod-shaped bacteria are enriched which permit a dense packing. |
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