Jan 31, 2008
Entire group met at plant for training session and to create goals for the semester. Removed baffles for new port holes to be cut Monday.
February 4, 2008
Entire Group met to drain and clean out the tank. All sand and dirt was removed.
February 5, 2008
Sara- in San Francisco for ESW conference.
The rest of the group met to cut the larger port holes and re-caulked one side of the dividers that had come un-done.
February 11, 2008
Plant up and running. Up welling noticed coming around the bottom panel. This was causing the first and third sections to fill at the same rate.
Plan to correct upwelling problem - caulk the bottom of the tank. Tank was left running to have comparative data do evaluate the affect of the bypass on the floc formation and plant performance. Turbidimeters cleaned and dessicants returned to lab to be dried out. Edited goals and added details and created milestone dates.
February 12, 2008
Rebecca takes new tube settlers to the plant. (2 broken last time) measures the flow rate coming out of the new tube settler pump and sets the flow rate to 40 ml/min. Takes dessicants back to the plant. (monitor broken)
February 14, 2008
Sara, Kevin, David meet with Raul to discuss the sedimentation tank plan, and what help he needs. Raul is working on the design over the weekend and design review will shortly follow in the next week.
The tank was drained again to prepare and dry the tank for caulking. Given the amount of time needed for the tank to dry for caulking (about a week) it was decided to add additional sand to the cracks around the bottom panel in the third section and in the first section but just in the very first section by the inlet. It was hoped that enough headloss could be created to decrease the severity of the by pass. Upon observation it seemed to at least help the issue a little bit. On Monday if the by pass still seems to be an issue the tank will be drained at caulked before further tests are run.
February 15, 16, 17, 2008
Sara - updating old papers up to the wiki. Work done on Teach-in Presentation.