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EFICIÃNCIA DE MANTA SINTÃTICA NÃO TECIDA NA REMOÃÃO DE ALGAS PRESENTES NA ÃGUA DE IRRIGAÃÃO
Authors
J.E.S. Paterniani
M.E. Scatolini
Publication date
31 March 2006
Publisher
UNIPINHAL
Abstract
Foram realizados ensaios comparativos entre elementos de disco, tela e uma manta sintética não tecida para verificar a eficiência da manta sintética na remoção de algas, quando utilizada em filtros para irrigação localizada. Nestes ensaios os três meios filtrantes foram submetidos à vazão e pressão constantes e foi feita contagem de algas no afluente e no efluente desses filtros. A contagem de algas foi realizada pelo método de Sedgwick-Rafter, de acordo com o âStandard Methods for the Examination of Water and Wastewaterâ e aplicou-se o teste F para análise da variância e os dados, em porcentagem, foram transformados segundo o arco seno da raiz de x/ 100. A partir destes dados foi feita análise estatÃstica (teste de Duncan) para verificar diferenças significativas entre os elementos filtrantes. Os resultados demonstraram que as mantas não tecidas apresentaram desempenho superior aos elementos de tela e disco, com 35% de remoção de algas, enquanto que os elementos de tela e disco apresentaram 26% de remoção. Palavras-Chave: filtragem, irrigação localizada, qualidade da água. ABSTRACT Comparative tests among screen, disks and non woven synthetic fabrics filters had been carried through to verify the efficiency of the non woven synthetic fabrics in the algae removal, when used in filters for drip irrigation. In these tests three filter elements had been submitted to the constant outflow and pressure and were made algae counting in filters affluent and effluent. The algae tally was carried through by the method of Sedgwick-Rafter, in accordance with the " Standard Methods for the examination of water and wastewater " and applied test F for analysis of the variance and the data, in percentage, had been transformed according to arc sine of the root of x / 100. These data were analyzed (test of Duncan) to verify significant differences between the filter elements. The results had demonstrated that non woven fabrics presented better performance than screen and disks elements, with 35% of algae removal, while the screen and disks elements had presented 26% of removal. Key Words: filtration, trickle irrigation, water quality
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Ecossistema (E-Journal, Unipinhal - Universitário de Espírito Santo do Pinhal)
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Last time updated on 17/10/2019