Hydrodynamic evaluation of a filter bed of porous material from stratified sedimentary rocks for the removal of turbidity in surface waters

In this study, the behavior of a filter bed of stratified sedimentary rocks was evaluated through the analysis of turbidity removal efficiency and head losses. Two types of sands were used as materials, fine and medium, as well as crushed limestone. The materials were characterized to determine the...

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Autores principales:	Angel Villabona-Ortíz, Candelaria Tejada-Tovar, David López-Barbosa
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Bed Stratification Filtration Sand Limestone Turbidity Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/65876dbd8e4c4c789495b07320cc2712
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spelling	oai:doaj.org-article:65876dbd8e4c4c789495b07320cc27122021-12-04T04:33:15ZHydrodynamic evaluation of a filter bed of porous material from stratified sedimentary rocks for the removal of turbidity in surface waters1026-918510.1016/j.sajce.2021.10.002https://doaj.org/article/65876dbd8e4c4c789495b07320cc27122022-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S102691852100055Xhttps://doaj.org/toc/1026-9185In this study, the behavior of a filter bed of stratified sedimentary rocks was evaluated through the analysis of turbidity removal efficiency and head losses. Two types of sands were used as materials, fine and medium, as well as crushed limestone. The materials were characterized to determine the average particle diameter, porosity, and permeability coefficient, obtaining respectively 0.17 mm, 0.39, and 1 × 10−3 cm/s for fine sand, 0.33 mm, 0.41, and 3 × 10−3 cm/s for medium sand, and 1.26 mm, 0.45, and 1 × 10−2 cm/s for crushed limestone. Hydrodynamic analyses of the clean filter under conditions of rapid filtration were carried out, by which the different rates of filtration to be used in each experiment were determined, establishing a direct correlation between the rate of filtration and the thickness of the bed; in this way, it was possible to determine the maximum bed thickness that could be used to maintain a rate of rapid filtration higher than 120 m/day. A hydrodynamic study with synthetic turbid water prepared at 8 NTU using tap water and bentonite was also carried out. Total head losses and turbidity removal were studied for each material at a rate of 153 m/day with removal efficiencies of 93.7% for medium sand with a loss of 23 cm and 67.8% for limestone with a loss of 4.5 cm and a rate of 389 m/day. It is recommended to use the medium sand and limestone type material for use in surface water filtration processes.Angel Villabona-OrtízCandelaria Tejada-TovarDavid López-BarbosaElsevierarticleBedStratificationFiltrationSandLimestoneTurbidityChemical engineeringTP155-156ENSouth African Journal of Chemical Engineering, Vol 39, Iss , Pp 97-105 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Bed Stratification Filtration Sand Limestone Turbidity Chemical engineering TP155-156
spellingShingle	Bed Stratification Filtration Sand Limestone Turbidity Chemical engineering TP155-156 Angel Villabona-Ortíz Candelaria Tejada-Tovar David López-Barbosa Hydrodynamic evaluation of a filter bed of porous material from stratified sedimentary rocks for the removal of turbidity in surface waters
description	In this study, the behavior of a filter bed of stratified sedimentary rocks was evaluated through the analysis of turbidity removal efficiency and head losses. Two types of sands were used as materials, fine and medium, as well as crushed limestone. The materials were characterized to determine the average particle diameter, porosity, and permeability coefficient, obtaining respectively 0.17 mm, 0.39, and 1 × 10−3 cm/s for fine sand, 0.33 mm, 0.41, and 3 × 10−3 cm/s for medium sand, and 1.26 mm, 0.45, and 1 × 10−2 cm/s for crushed limestone. Hydrodynamic analyses of the clean filter under conditions of rapid filtration were carried out, by which the different rates of filtration to be used in each experiment were determined, establishing a direct correlation between the rate of filtration and the thickness of the bed; in this way, it was possible to determine the maximum bed thickness that could be used to maintain a rate of rapid filtration higher than 120 m/day. A hydrodynamic study with synthetic turbid water prepared at 8 NTU using tap water and bentonite was also carried out. Total head losses and turbidity removal were studied for each material at a rate of 153 m/day with removal efficiencies of 93.7% for medium sand with a loss of 23 cm and 67.8% for limestone with a loss of 4.5 cm and a rate of 389 m/day. It is recommended to use the medium sand and limestone type material for use in surface water filtration processes.
format	article
author	Angel Villabona-Ortíz Candelaria Tejada-Tovar David López-Barbosa
author_facet	Angel Villabona-Ortíz Candelaria Tejada-Tovar David López-Barbosa
author_sort	Angel Villabona-Ortíz
title	Hydrodynamic evaluation of a filter bed of porous material from stratified sedimentary rocks for the removal of turbidity in surface waters
title_short	Hydrodynamic evaluation of a filter bed of porous material from stratified sedimentary rocks for the removal of turbidity in surface waters
title_full	Hydrodynamic evaluation of a filter bed of porous material from stratified sedimentary rocks for the removal of turbidity in surface waters
title_fullStr	Hydrodynamic evaluation of a filter bed of porous material from stratified sedimentary rocks for the removal of turbidity in surface waters
title_full_unstemmed	Hydrodynamic evaluation of a filter bed of porous material from stratified sedimentary rocks for the removal of turbidity in surface waters
title_sort	hydrodynamic evaluation of a filter bed of porous material from stratified sedimentary rocks for the removal of turbidity in surface waters
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/65876dbd8e4c4c789495b07320cc2712
work_keys_str_mv	AT angelvillabonaortiz hydrodynamicevaluationofafilterbedofporousmaterialfromstratifiedsedimentaryrocksfortheremovalofturbidityinsurfacewaters AT candelariatejadatovar hydrodynamicevaluationofafilterbedofporousmaterialfromstratifiedsedimentaryrocksfortheremovalofturbidityinsurfacewaters AT davidlopezbarbosa hydrodynamicevaluationofafilterbedofporousmaterialfromstratifiedsedimentaryrocksfortheremovalofturbidityinsurfacewaters
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Hydrodynamic evaluation of a filter bed of porous material from stratified sedimentary rocks for the removal of turbidity in surface waters

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