Jenny Guan's Individual Contribution Page

"Semester" Contributions

This semester I am working with ~cs882 to improve the foam filter system by making it easier to clean, more portable, more user friendly, and more efficient. 

We have managed to get the system running without electricity. This is done by placing the water tank above the foam filtration system and using the difference in elevation and head losses to meet the required flow. 

Chemical Doser

Designs for a coagulant doser have been drawn out in the figure below (click for larger image).

The amount of coagulant needed is based upon the amount of NTU's (Net Turbidity Units) in the influent. The coagulant flow is controlled through varying head loss using the dosing tube. The actual chemical dosers for both coagulant and chlorine are currently under construction.

Visual Indicator

We have the idea of using a secchi disk as a form of a visual indicator to tell when the filter needs to be cleaned. So far we have begun construction of the secchi disk and will soon begin to run experiments to determine the effectiveness of this method.