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MODEL 2: BACKWASH SAND FILTER
This experiment will model the effect that running water through a layer of sand will have on its dissolved oxygen content. We hope to see that the sand particles facilitate larger bubble formation by providing surfaces to which small bubbles can adhere and grow until they are large enough to float to the surface. If the method proves to be effective, we can implement this in current and future AguaClara plants by transforming the grit chamber so that water enters at the bottom and flows upward through sand. Through experimentation as well as extensive literature searches, we hope to see the effects of the water's upward flow rate, the sand particle size, and the sand layer depth on dissolved oxygen levels. With this data, we plan to determine the optimum conditions needed for dissolved oxygen removal.
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