<b>Hydrodynamic analysis of particle collection efficiency: comparing downflow and upflow filtration</b> - doi: 10.4025/actascitechnol.v34i2.10803

Authors

  • Alexandre Botari Universidade Estadual de Maringá - UEM
  • Luiz di Bernardo Universidade de São Paulo - USP

DOI:

https://doi.org/10.4025/actascitechnol.v34i2.10803

Keywords:

mathematical modeling, CFD analysis, particle collection efficiency, direct filtration.

Abstract

Models of the filtration phenomenon describe the mass balance in bed filtration in terms of particle removal mechanisms, and allow for the determination of global particle removal efficiencies. These models are defined in terms of the geometry and characteristic elements of granule collectors, particles and fluid, and also the composition of the balance of forces that act in the particle collector system. This work analyzes particles collection efficiency comparing downflow and upflow direct filtration, taking into account the contribution of the gravitational factor of the settling removal efficiency in future proposal of initial collection efficiency models for upflow filtration. A qualitative analysis is also made of the proposal for the collection efficiency models for particle removal in direct downflow and upflow filtration using a Computational Fluid Dynamics (CFD) tool. This analysis showed a strong influence of gravitational factor in initial collection efficiency (t = 0) of particles, as well as the reasons of their values to be smaller for upflow filtration in comparison with the downflow filtration.

 

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Author Biography

Alexandre Botari, Universidade Estadual de Maringá - UEM

Departamento de Tecnologia - DTC área: Hidráulica e Saneamento

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Published

2011-11-09

How to Cite

Botari, A., & Bernardo, L. di. (2011). <b>Hydrodynamic analysis of particle collection efficiency: comparing downflow and upflow filtration</b> - doi: 10.4025/actascitechnol.v34i2.10803. Acta Scientiarum. Technology, 34(2), 167–175. https://doi.org/10.4025/actascitechnol.v34i2.10803

Issue

Vol. 34 No. 2 (2012)

Section

Civil Engineering

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