Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/242688
Type: Artigo de periódico
Title: Efficiency Of Pressurized Sand Filters In Removing Different Particle Sizes From Irrigation Water
Author: de Deus
Fabio Ponciano; Testezlaf
Roberto; Mesquita
Marcio
Abstract: The objective of this work was to evaluate the efficiency of sand filters of different granulometry in removing different particles sizes from irrigation water, as well as the pressure loss due to the filtration rate and sand particle size of the filter bed. The trials were conducted with three sand filters of the same commercial model, tested with different combinations of sand particle sizes (fine, 0.55 mm; medium, 0.77 mm; and coarse sand, 1.04 mm diameter) and filtration rates (20, 40, 60, and 75 m(3) m(-2) h(-1)), repeated in three 4-hour filtration cycles (C1, C2, and C3, carried out in 3 consecutive days). The evaluated sand filter is effective in the removal of particles starting at the fine sand size (> 60 mu m). In this particle removal range, the influence of the filtration rate increases with decreasing particle size in the water. The increase in the filtration rate, associated with the reduction in sand granulometry, increases removal efficiency, but accentuates pressure loss in time, which decreases the removal of smaller particles during the filtration process.
Subject: Localized Irrigation
Head Loss
Country: BRASILIA DF
Editor: EMPRESA BRASIL PESQ AGROPEC
Rights: fechado
Identifier DOI: 10.1590/S0100-204X2015001000010
Address: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015001000939&lng=pt&nrm=iso&tlng=en
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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