Performance evaluation of biofilm reactors using graphical techniques

M. T. Suidan, Y. T. Wang, B. R. Kim

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


The dimensionless steady-state flux, J*, of substrate into a biofilm can be expressed as a function of the concentration of substrate in the bulk, Sb*, the thickness of the stagnant liquid layer surrounding the biofilm, L*, and the minimum concentration of substrate capable of sustaining growth, Smin*. Using a simplified algebraic expression that relates J* to Sb*, L* and Smin*, a series of nomograms were developed that give the performance of completely mixed (fluidized-bed) and plug-flow (packed-bed) biofilm reactors as a function of process parameters such as hydraulic retention time, kinetic constants and hydrodynamic conditions. The nomograms are simple to use and provide a tool for analyzing the performance of such reactors based in fundamental principles.

Original languageEnglish
Pages (from-to)837-844
Number of pages8
JournalWater Research
Issue number7
StatePublished - Jul 1989

Bibliographical note

Funding Information:
Acknowledgement--Funding for this study was provided by the Advanced Environmental Control Technology Research Center, University of Illinois at Urbana--Champaign.


  • attached growth
  • biofilm
  • design
  • expanded-bed
  • fluidized-bed
  • nomogram
  • packed-bed

ASJC Scopus subject areas

  • Environmental Engineering
  • Civil and Structural Engineering
  • Ecological Modeling
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution


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