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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Modeling of the head loss in up flow coarse sand and gravel direct filtration

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Alexandre Botari ; Luiz Di Bernardo
Total Authors: 2
Document type: Journal article
Source: Engenharia Sanitária e Ambiental; v. 14, n. 2, p. -, Jun. 2009.

To understand and to quantify the head loss due to the particles removal in a porous medium has primary importance to filtration process study. This paper presents the development of the models of head loss used in the filtration in porous media and proposes a mathematical semi-empiric model for head loss in clean beds and head loss increasing profile during the filtration run length, by means of the Ergun equation. The goal was the determination of Ergun’s equation coefficients for granular material constituted of coarse sand and gravel. Examples of application of these mathematical modeling are also presented and discussed by the authors based on experimental data obtained in a double filtration pilot plant. (AU)