Filter Inspection Techniques
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Transcript of Filter Inspection Techniques
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Filter Inspection TechniquesFilter Inspection TechniquesCore SamplingVisual Observation of Filter SurfaceProbing Gravel LayerCollect Media Sample – Sieve AnalysisView Media Under Microscope
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Inserting Core Sampling TubesInserting Core Sampling Tubes
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Examining Media Core Samples
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Visual Observation Mud/Mud balls
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Probing Media Depth to the Gravel Layer
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Collecting Media Sample for Testing – Collecting Media Sample for Testing – Sieve Analysis and Acid SolubilitySieve Analysis and Acid Solubility
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•Media is 16 years old
•16.5% weight loss
•Low (12%) bed expansion
•KMnO4 used in pretreatment
•8 hour filter runs
•Mud balls deep in filter
•Media is 16 years old
•16.5% weight loss
•Low (12%) bed expansion
•KMnO4 used in pretreatment
•8 hour filter runs
•Mud balls deep in filter
After acid washAfter acid wash
Before acid washBefore acid wash
20X Magnification Digital Photos of
Dried Media