Slow Rate Sand Filtration Using a Zeolite Surface Amendment

by Daniel Rex McNair, Westinghouse Electric Corp, Idaho, Falls, ID, USA,
Ronald C. Sims, Westinghouse Electric Corp, Idaho, Falls, ID, USA,

Document Type: Proceeding Paper

Part of: Environmental Engineering


The objective of the study was to obtain detailed information regarding amended filter performance at surface loading rates 2 to 4 times higher than standard flow rates. Experiments were designed to evaluate variables affecting both hydraulic and process performance. Hydraulic performance expectations at higher than standard flow rates, measured by the changes in filter cycle flow rates, were evaluated with respect to changes in process performance. Process performance was indicated by results of discrete particle analyses and results were then used to evaluate economic aspects of amended SSF operation. The results are presented.

Subject Headings: Sand filters | Minerals | Filtration | Sandy soils | Overland flow | Water treatment plants | Filters | Flow rates

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