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Performance Comparison
In order to learn if the flow distribution in the stacked rapid sand filter system is working reasonably well, it is necessary to conduct an experimental comparison to a single layer filter of the same depth as a single layer of our stacked filter (20 cm).

Head Loss Measurement
The head loss across the filter over time is the governing factor that determines the filtration cycle time. The build up of head loss ultimately determines how often the filtration unit will require backwashing.

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