Accomplishments
11/09/08 -
- removed sutro-weir support structure
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- played with alum dosing making sure flow rate stays steady and used tank light to determine optimal floc formation
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- bought pvc and created connection, so the inlet doesn't pour in over baffles
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- bought pvc pipe to cut to reconfigure uniform spacing
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- replaced light bulb in tank light, so we can observe floc formation in the flocculator
11/10 -
- determined that energy dissipation in uniform flocculator was too low
11/11 -
- Henry and Christine cut pvc piping for uniform baffles (15cm).
- played with alum dosing instead of increment
11/12
- -replaced uniform baffles with tapered baffles -
- took apart uniform baffles
11/13
- -met with Monroe
11/15
- began to replace with 15 cm spacing but decided against it because there might not be enough energy dissipation -
- alum pump failure due to stamp box disconnection while replacing baffles -
- need to fix stamp box
11/16
- -fixed stamp box by unplugging/ replugging connections,
- set up siphon to clean tank
- -discussed options for tube flocculator tubing/ set up with Mark -
- discussed options for grounding tank/ need to ask tom
- played with alum dose
11/17
- -MathCAD tutorial
- determined baffle spacing with minimum energy dissipation requirement of .4 mW/kg
Outcomes
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- need to replace baffles in uniform flocculator and end of tapered flocculator with 13 cm spacing
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- need to replace baffles/ recut pvc
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- Tom is ordering tubing for tube flocculator
Issue
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- pump
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- electric current in tank