McKenzie

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Hubert’s Individual Contributions

Spring 2013 Contributions

As a member of the SRSF StaRS Filter Theory research team, I compared the differences between subsurface injection of raw water into sand filter and conventional down flow filter designs in which water enters through the top of sand bed. Our goal was to determine if there were any significant advantages between the two designs in terms of head loss through the filter or particle capture efficiency. We began the semester by conducting a literature search of what is already known about "depth" and "surface" filtration and what factors caused one over the other to occur. While we were able to find some information about these terms, we were unable to find much information about subsurface water injection in filters. We then created an experimental apparatus which allowed us to directly compare the two types of filters side-by-side using the same influent water. I became familiar with using programs such as Process Controller, Excel, MathCAD, and Lyx throughout the semester as we collected and analyzed the data recorded by the pressure sensors and turbidimeters used in our experiments.

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