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Modelling of organic removal in a Moving Bed Biofilm Reactor (MBBR)

Hosseiny, S. H ; Sharif University of Technology | 2002

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  1. Type of Document: Article
  2. Publisher: Sharif University of Technology , 2002
  3. Abstract:
  4. In this paper, a new Moving Bed Biofilm Reactor (MBBR) has been developed, in which biomass is attached to small plastic elements that move freely in the bioreactor. The biofilm carrier elements, shaped like small corrugated cylinders, are made of polyethylene with a density of 0.95 gr/cm3 slightly lower than the density of water, allowing them to circulate with the currents in the reactor. The unit was tested under different organic loads and the substrate loading removal rate was compared with predictions of the Kincannon-Stover and Monod models. In this experiment, the influent COD concentration was between 225 mg/l to 4370 mg/l. The Hydraulic Retention Time (HRT) was 24 hr and the temperature was kept constant at 25°C. Data analysis indicates that the Kincannon-Stover model can produce the best fit with the experimental results. The kinetic studies indicate that the biofilm diffusion is a more important parameter in controlling the mass transfer phenomena compared to hydraulic factors in the system
  5. Keywords:
  7. Source: Scientia Iranica ; Volume 9, Issue 1 , 2002 , Pages 53-58 ; 10263098 (ISSN)
  8. URL: http://scientiairanica.sharif.edu/article_2724.html