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Floating Flocs Meeting Minutes

Spring 2009 Minutes

April 24, 2009

Working Group: Sand Filter

Accomplishments
  • Improved the setup by using larger tubing in order to accomodate the higher flow rates
  • Implemented the aeration apparatus (bubble chamber) to supersaturate the water entering the sand filter column; automated the setup again
Metrics
  • Ran the experiment with Sand 40 (0.42 - 0.59mm) again at the different expansion levels
  • Measured the actual flow rate coming out of the bubble collector for each run
  • Performed a sugar test for each run
Outcomes
  • Sugar test still shows that there is a lot of dissolved oxygen present in the water
Issues
  • Need new glass column
  • Problem with control pressure in bubble chamber
  • Problem with restricting the air from escaping the chamber too quickly
  • Problem with Control Processor although the average pressure is used
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