Evaluation of hydrodynamic behavior of biosand filters using computational fluid dynamics combined with the design of experiments

Biosand filters (BSFs) are widely used in rural and urban areas where access to drinking water is limited or non-existent. This study applies computational fluid dynamics in the assessment of hydrodynamic characteristics considering changes in the design of two BSF models to make construction option...

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Bibliographic Details
Published in:Journal of hydroinformatics 2022-03, Vol.24 (2), p.333-349
Main Authors: Sala, Dominique Martins, Rezende, Ricardo Vicente de Paula, Lautenschlager, Sandro Rogério
Format: Article
Language:English
Subjects:
anova
Biofilms
biosand filter
Boundary conditions
cfd
Computational fluid dynamics
Computer applications
Design
Design of experiments
Drinking water
Filters
Flow simulation
Fluid dynamics
Fluid filters
Geometry
Hydrodynamics
Mathematical models
Pipes
point-of-use water treatment technologies
porous media flow
Rural areas
Sand & gravel
Urban areas
Velocity
Water treatment
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Summary:Biosand filters (BSFs) are widely used in rural and urban areas where access to drinking water is limited or non-existent. This study applies computational fluid dynamics in the assessment of hydrodynamic characteristics considering changes in the design of two BSF models to make construction options available to communities, without losing hydrodynamic efficiency. The commercial code ANSYS-CFX 20.1 together with a central composite design of experiments methodology to simulate the flow was used under different combinations of porosities, permeabilities, pipe diameters, and filter diameters and heights. These parameters were combined statistically from Statistica 13.3. Our results have shown that combining greater filter depths with smaller pipe diameters has played a key role in the BSF best performance, and the CAWST V10 model has performed better than HydrAid, with lower velocities and longer hydraulic retention times.
ISSN:1464-7141
1465-1734
DOI:10.2166/hydro.2021.087