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Tasks for this summer involve finding the parameters at which the subsurface injection filter becomes clogged. Using the experimental apparatus built last semester, the team will continue research comparing the surface and subsurface sand filters. The team will run experiments and change the influent turbidity, influent velocity, and coagulant dosage. Effects on head loss and effluent turbidity will be observed and analyzed.
Fall 2013
The SRSF Theory will build team redesigned and built a new filter column and experimental apparatus using a combination of the former experimental apparatus and run experiments testing new parts. Calculations were done to design the apparatus so that it best models stacked rapid sand filters in AguaClara plants. A Process Controller method file was written to run experiments and collect data. Proportional Integral Derivative (PID) Control was implemented so that influent turbidity can be held constant at a desired value. Experiments varying coagulant dosage were run. Effluent turbidity and head loss data were collected and analyzed to assess filter performance and start a mathematical model of filter performance.
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