...
Accomplishments
- cleaned floc tank Thursday Weds and FridayThurs
- cleaned turbidimeters and backwashed lines to tube settlers Thurs
- ran tests with uniform baffle spacing Thurs and Friday
- attempted to use peristaltic pump with tube flocculator
- Worked on wiki page
Outcomes
- Thursdays Weds test was inaccurate due to unclean turbidimeters
- Results from Fridays Thurs' test seem inaccurate, raw water turbidity is very low. Perhaps line is clogged
- cleared raw water line on Friday by backwashing lines and opening/shutting inlet valve several times. Line was not clogged so most likely clog was in inlet valve. After opening and shutting several times to increase/decrease pressure clog seemed to break up and run through tube.
Issues
- Floc tank will need more regular cleaning from group
- will need stronger pumps for tube flocculator
- sink to drain flocs clogs easily, extra care is needed when cleaning tank to avoid flooding of plant.
- need to figure out why raw water turbidity reading is lowto replace bulb on tank light
- level in plant grit chamber fluctuates greatly during this season. Air gets caught in Pilot plant pump line preventing flow. Unthreading the pipe joint to let air out solves this problem.