October 24, 2008

Accomplishments

• cleaned floc tank Mon, Tues, Weds and Fri
• checked turbidimeters and cleaned if necessary Mon, Tues, Weds and Fri
• ran tests with uniform baffle spacing Mon, Tues, Weds and Fri
• attempted to use peristaltic pump with tube flocculator
• worked on wiki page

Outcomes

• created turbidity profiles on Mon, Tues, Weds and Fri
• improved our method of creating turbidity profiles, by normalizing data and adding more data points
• plan on replacing soft tubing in the tube floc with rigid tubing.
• friday's profile inaccurate because tank was not completely full.
• also cleaning and sampling method varied each test so data cannot be compared
• two tests on uniform baffles will be run next week with identical cleaning and sampling methods then the uniform baffles will be replaced by the tapered baffles

Issues

• will need stronger pumps for tube flocculator
• clear tubing used for tube flocculator seems to be warped, letting air get in at the joints
• sink to drain flocs clogs easily, so we now pump the water to another drain while cleaning the tank
• every time the tank is cleaned, the pump that drains the water from the floc tank also drains the sed tank, possibly disturbing the floc blanket
• need to replace bulb on tank light