"Young Jin"'s Individual Contribution Page
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Spring 2010 Final-Semester Contributions
Continuing the work from the semester of fall 09, this semester I returned to the Tube Floc team and researched the effects of varying alum dosage and flocculator length. With Sophie, I was again put into the data analysis group of the team.
This semester, the team decided to collect as much data on flocculator length and alum dosage as possible with an assurance of accuracy of these results. We planned to replicate the experiments conducted the previous semester for verification and organized the order in which we should increase the influent turbidity and flocculator length. The Mathcad code for Data Processor was upgraded and a new excel spreadsheet was created for organization/storage of the overall results.
Unfortunately, this semester, unpredicted and unavoidable problems were encountered in the experimental apparatus. With goals set up and experiments planned out, the team was hoping for a smooth run of various experiments and much data acquisition; however, unexpected events such as computers shutting down, the water bucket falling, water leakage, etc prevented the experiments from running and gave poor results. Most importantly, the experimental group of the team discovered alum clogging in the influent tube which affected the whole experiment and gave false results that could not be used for analysis. Because of these situations, there were not much data to analyze this semester and not much new results were collected.
I specifically was in charge of updating the Wiki so that we would not have to cram in for the final draft. I tried to learn from Sophie the data analysis process as much as possible for the data collected. In addition to the experiment of alum dosage and flocculator length, the team was also given the task to test the validity of the results given by FReTA. I was assigned to analyze this new experiment as much as possible and was put in charge of calculating the amount, size, and theoretical sedimentation velocities of the particle beads we were to order for the experiment. I wrote up the Wiki page on this section (Test suspension) and edited the overall page with final organizational touches.
Fall 2009 Final-Semester Contributions
In the beginning of the semester, for organization and efficiency, our team was split into two groups: the data analysis group and experiment group. I was assigned to the data analysis group with Sophie and Laura.
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