Study of biofilm and fluidization of bioparticles in a three-phase liquid-fluidized-bed reactor

F. Trinet, R. Heim, D. Amar, H. T. Chang, B. E. Rittmann

Research output: Chapter in Book/Report/Conference proceedingConference contribution

62 Scopus citations

Abstract

A three-phase, liquid-fluidized-bed biofilm reactor was operated over wide ranges of liquid velocity, air velocity, medium concentration, and substrate surface loading. The biofilm characteristics (total colonization, polysaccharide content, density, and thickness) and the specific detachment coefficient (b(s)) were determined by a combination of experimental measurements and a hydrodynamic model. The results demonstrated that dense and thin biofilms were induced by the physical condition of high particle-to-particle contacts and high liquid turbulence. The biofilm's polysaccharide content was increased by increased air turbulence and a low substrate availability. The specific detachment coefficient, b(s), was strongly correlated to the concentration of the medium (negatively) and the polysaccharide content (positively). Overall, the b(s) can be controlled significantly by the gas and liquid velocities; increasing either velocity tends to increase b(s).

Original languageEnglish (US)
Title of host publicationWater Science and Technology
Pages1347-1354
Number of pages8
Volume23
Edition7-9
DOIs
StatePublished - Jan 1 1991
Externally publishedYes
EventProceedings of the 15th Biennial Conference of the International Association on Water Pollution Research and Control - Kyoto, Jpn
Duration: Jul 29 1990Aug 3 1990

Other

OtherProceedings of the 15th Biennial Conference of the International Association on Water Pollution Research and Control
CityKyoto, Jpn
Period7/29/908/3/90

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

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  • Cite this

    Trinet, F., Heim, R., Amar, D., Chang, H. T., & Rittmann, B. E. (1991). Study of biofilm and fluidization of bioparticles in a three-phase liquid-fluidized-bed reactor. In Water Science and Technology (7-9 ed., Vol. 23, pp. 1347-1354) https://doi.org/10.2166/wst.1991.0587