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Backwash process in a sand filter prototype used in irrigation CIGR Journal
Cândido de Souza, Álvaro Henrique; Seron, Cássio de Castro; Lorenzoni, Marcelo Zolin; de Deus, Fábio Ponciano; Rezende, Roberto.
Backwash process of sand filters requests specific surface velocity to reach the recommended filter bed height expansion, however the expansion of the filter bed height is very influenced by their characteristics. This work had as aim to evaluate the effect of different sand particle size, static filter bed layer and expansion of the filter bed height on a prototype of sand filter during backwash process. The tests were accomplished using a sand filter prototype that had structural similarity and shape as commercial equipments (24 cm of height and 12.7 cm of diameter). The treatments consisted from combinations of five separate sand particle sizes (0.15; 0.33; 0.51; 0.72 e 0.92 mm of medium diameter), five static filter bed layer (5; 7; 9; 11 and 13 cm)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water treatment; Irrigation; Fertigation; Irrigation water treatment; Superficial velocity; Sand particle sizes; Filter bed layer.
Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4910
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