Accomplishments

11/09/08

• removed sutro-weir support structure
• played with alum dosing making sure flow rate stays steady and used tank light to determine optimal floc formation
• bought pvc and created connection, so the inlet doesn't pour in over baffles
• bought pvc pipe to cut to reconfigure uniform spacing
• 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

• need to replace baffles in uniform flocculator and end of tapered flocculator with 13 cm spacing
• need to replace baffles/ recut pvc
• Tom is ordering tubing for tube flocculator

Issue

• pump
• electric current in tank