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The accuracy of our MATHCAD generated design parameters depend on the accuracy of the empirical fluidization velocity equations that we used. We developed a bench-scale model of our filtration system and conducted an experiment measuring the expansion of a filter bed as backwash velocity is varied. We then compared the empirically calculated fluidization velocities with the actual fluidization velocities required. Click here for the Fluidization Velocity Experiment.
The accuracy of our model also required for the headloss occurring through an expanded bed to be more or less constant. According to our research, headloss should be constant once fluidization of the bed is achieved regardless of the degree of expansion. We simulated a variety of different bed expansion and observed headloss to be constant. Click here for the Expanded Bed Headloss Experiment.

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