Automatic Flushing Strainer-Type Filter: A Method for Actual Filtration Grade Assessment
Publication: Journal of Irrigation and Drainage Engineering
Volume 149, Issue 6
Abstract
Proper filtration selection, sizing, maintenance, and performance of a filtration system are crucial for removing suspended solids in water, preventing clogging of emitters, and ensuring a high-performing microirrigation system throughout its lifespan. Filtration prevents the intake of particles larger than the pore size specified in a given filtration grade. Proper selection of the filter media ensures efficient solid–liquid separation. Strainer-type or screen filters have elements composed of a woven or nonwoven cloth of numerous weave types. The material and characteristics of the screen directly affect the fluid flow and filter performance. The aim of this study is to propose a method for determining the actual filtration grade of filters used for irrigation. An automatic flushing strainer-type filter was equipped with five filter element models, composed of woven and nonwoven materials, for evaluation. A new methodology was developed to assess the actual filtration grade based on the removal efficiency for suspended solids under controlled and repeatable conditions. The removal efficiency of each filter element was determined for particle size ranges defined according to the filtration grade declared by the manufacturer. The proposed methodology allowed for the assessment of the actual filtration grade of each model of filter element operated with water containing suspended particles of silica sand. The filtration grade declared by the manufacturer was confirmed for some of the filter elements, but it could be modified for others. The proposed methodology could be useful for assessing the actual filtration grades of screen, disk, and media filters.
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Data Availability Statement
All the data, models, and codes generated or used during the study appear in the published article.
Acknowledgments
The authors are grateful to the fund to support teaching, research, and extension—FAEPEX/UNICAMP (FAEPEX/UNICAMP-Brazil, Project 3081/19) for financial support. We would like to thank IAVANT Filtration Systems (Brazil) for their cooperation and support in this research.
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Information & Authors
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Published In
Journal of Irrigation and Drainage Engineering
Volume 149 • Issue 6 • June 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Jan 22, 2022
Accepted: Feb 7, 2023
Published online: Apr 6, 2023
Published in print: Jun 1, 2023
Discussion open until: Sep 6, 2023
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