Eficiência de filtros de areia pressurizados na remoção de diferentes tamanhos de partículas da água de irrigação

Deus, Fábio Ponciano de; Testezlaf, Roberto; Mesquita, Márcio

doi:10.1590/s0100-204x2015001000010

Cited by 4 publications

(1 citation statement)

References 9 publications

(13 reference statements)

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“…As the water's sediment and particle concentration increases, the filter layer is required to intercept and adsorb a significant amount of contaminants through the filter media's pores and surface within a limited time frame. This added strain on the filtration material contributes to a higher head loss, as the water must exert more effort to traverse the increasingly obstructed filter layer [35].…”

Section: Discussionmentioning

confidence: 99%

Experimental Study on the Filtration Characteristics and Sediment Distribution Influencing Factors of Sand Media Filters

Zhang,

Cai,

Zhai

et al. 2023

Water

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The sand media filter is a crucial component of micro-irrigation filtration systems. Investigating the effects of various factors on filtration performance and the migration patterns of sediment particles within the filter can enhance the healthy operation of sand media filters. This study, based on a sand media filter model, conducts indoor hydraulic experiments, selecting different experimental factors and observation indices for research under varying conditions. Results indicate that filter thickness and raw water concentration are positively correlated with the turbidity of filtered water samples, while changes in filtration rate have no obvious impact on turbidity. When filter thickness is large, particle content differs obviously from other filter thicknesses, and the effect of raw water concentration changes on particle content is similar to that of filter thickness changes. Sediment particle size distribution within the filter layer is primarily concentrated in the upper region. By focusing on the area situated 20 cm below the filter layer surface, the sediment retention rate reached 80% or higher at a depth of 20 cm below the filter layer surface. As the depth of the filter layer increases, the sediment retention characteristics show a decreasing trend for larger particle sizes and an increasing trend for smaller particle sizes. Head loss is positively correlated with filtration rate, raw water concentrations, and filter thickness changes. It is suggested that, when meeting micro-irrigation water quality requirements, the filter material particle size can be appropriately increased to improve filtration efficiency and reduce energy consumption. These research findings are highly significant for sand media filter material selection and working condition design.

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Section: Discussionmentioning

confidence: 99%

Experimental Study on the Filtration Characteristics and Sediment Distribution Influencing Factors of Sand Media Filters

Zhang,

Cai,

Zhai

et al. 2023

Water

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Hydraulic characterisation of the backwash process in sand filters used in micro irrigation

Deus

Mesquita

Ramirez³

et al. 2020

Biosystems Engineering

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Solid Removal across the Bed Depth in Media Filters for Drip Irrigation Systems

Duran–Ros

Pujol

et al. 2023

Agriculture

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Pressurized sand media filters are commonly used in drip irrigation systems to prevent emitter clogging. However, the performance of these filters may be improved with more information about the retention of solids at different bed depths under different filter operation conditions and irrigation water sources. In this study, experiments in a scaled sand media filter were conducted to clog the filter with two different filtration velocities (30 and 60 m h−1) and two-particle types (inorganic from A4 coarse sand dust and organic from a reclaimed effluent). The suspended solids retained in slices of 5 mm (in the first 20 mm of the bed) and 20 mm (from 20 to 200 mm depth) thick were determined following the van Staden and Haarhoff (2011) procedure. The solids retained in each slice per mass of media were significantly (p < 0.05) affected by the interaction between the filtration velocity, the bed depth, and the particle type. The solids retained in the first 5 mm of the bed were significantly higher than at other depths. Moreover, inorganic solids were retained more in upper slices than organic ones. Therefore, media depths may be adjusted depending on the irrigation water source to optimize media use.

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Eficiência de filtros de areia pressurizados na remoção de diferentes tamanhos de partículas da água de irrigação

Cited by 4 publications

References 9 publications

Experimental Study on the Filtration Characteristics and Sediment Distribution Influencing Factors of Sand Media Filters

Experimental Study on the Filtration Characteristics and Sediment Distribution Influencing Factors of Sand Media Filters

Hydraulic characterisation of the backwash process in sand filters used in micro irrigation

Solid Removal across the Bed Depth in Media Filters for Drip Irrigation Systems

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