Floating Floc Meeting Minutes

Spring 2009 Minutes

March 27, 2009

Working Group: Bubbles

Accomplishments

• Teach in on March 25, 2009

Metrics

• Spoke with Monroe

Outcomes

• Considering alternative solutions to floating floc problem

Issues

• This method may not work

Working Group: Sand Filter

Accomplishments

• Completion of the Sand Filter Simulation Image for Teach in
• PowerPoint Presentation for Teach in on March 25, 2009

Metrics

• Conflicts within data may be a result of the order in which the depth of the sand is changed
• Spoke to Monroe with all of floating floc group

Outcomes

• Sand Filter Method will now be the floating floc group's primary focus.
• We need to run the experiment at different flow rates, different sand densities or diameters
• We need to begin experimenting with the sugar test to ensure our setup is truly stripping the extra dissolved oxygen out of the supersaturated water.

Issues

• There seems to be some bubble formation in the flow accumulator when the depth of sand is changed. A possible solution is to let sand completely settle before running a new experiment
• The glass beads we are using now are too small and float up with the bubbles.  We need to find out how big the sand particles need to be in order to prevent this.
• The upflow velocity in the column needs to be determined.