...
Final Design Schematic (as of currently)
Write brief summary here tracking the flow through the systemBecause there were many problems with the alum/chlorine doser designs, a batch dosing system was used instead of a continuous system. In this system, the user will manually add alum into the holding tank and chlorine into the distribution tank, while stirring the mixtures together. Influent water from the holding tank flows into the filter column and is filtered through the depth of foam in the column. The height of the foam in the column will be ten inches; this was chosen empirically based on previous experimental results from Summer 2010, which indicated that a ten inch height would result in the least effluent turbidity. Heights greater than 10 inches generally performed about the same, providing diminishing returns. The diameter of the column will be four inches to give the operator easy access to the contents inside for the purposes of cleaning and maintenance.
