ASAE/ASABE S539 PDF download

ASAE/ASABE S539 – Media Filters for Irrigation-Testing & Performance Reporting

This Standard has the following purposes:
1.1.1 Define a standard procedure to collect irrigation media filter test data.
1.1.2 Provide procedures to classify and characterize media filter test data from manufacturers andindependent testing laboratories.
1.2 This Standard establishes a consistent basis to validate and support manufacturer?s statements on theperformance, reliability, safety, and long-term effectiveness of individual irrigation media filtration systems.Sufficient data are to be developed so irrigation system designers and others can evaluate the suitability of aparticular filter system for a specific application.
1.3 This Standard does not establish design criteria for irrigation media filters or specify media. It is notintended for use in ranking different products.
1.4 The scope of this Standard is to describe methods for obtaining sufficient, accurate data to determineperformance characteristics of media filters used for irrigation. This Standard pertains only to media filters forirrigation water.
1.5 This Standard addresses the operation and performance of a system of media filter tank vessels, relatedvalves, backwash mechanism, underdrains and manifolds. These components define the containment andprocessing assemblies associated with media filtration systems that ensure proper hydraulic characteristics,flow balance, and adequate cleaning of the media for a specific product design that has been installed andoperated as recommended by a manufacturer.
1.6 The selection of the actual filtration media used inside the filtration system is not part of this Standard,although it is extremely important to overall filtration performance. The ultimate effectiveness of filtrationdepends on the depth and type of the media bed, velocity of water through the bed, physical composition andcharacteristics of the media, and equivalent pore-size distributions. Testing of individual media for its efficiencyin filtration is likewise not part of this Standard.
1.7 Determinations of particulate composition of the outlet test fluid are used to assess the potentialeffectiveness of the entire backwash system in cleaning the media after extended use, and are not anevaluation of media performance.