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In the second half of the semester, the plant continued to pose challenges. These included problems with alum pumping the wrong direction and an overflowing rapid mix pipe, but the biggest issue was that the flow through the plant would decrease dramatically while we were gone. This problem was attributed to leaves from Fall Creek clogging up the pump. Initially, we just solved the problem by using a long stick with a brush attached; however a more permanent solution was required. I fabricated a cage for the pump out of a metal screen material. Since then, the flow rate has been very consistent. Shaina and I also trimmed the weirs for the plant leveling tank, so that there would not be any possibility of overflow leading to flooding. I also continued to focus on making the PPST wiki more user friendly, including the following pages: Pilot Plant Sedimentation Tank Overview, PPST Methods, Troubleshooting, PPST Sludge Blanket Results, PPST Sludge Blanket Formation, Sed Tank Design.
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