Floating Flocs Meeting Minutes

Spring 2009 Minutes

April 10, 2009

Working Group: Sand Filter

Accomplishments

• Wrote meeting minutes
• Built and connected the bubble collector container
• Reconfigure the Sand Filter Diagram; see Figure

Metrics

• Reprogram process Controller: add a pressure sensor, two more values: one for air and the other for water out.
• Perform sugar test to confirm that the dissolved oxygen has been stripped out of the water.

Outcomes

• The Bubble Collector Container is air tight. We tested it by placing the whole container with air into a sink full of water. No air bubble leak out of the container.
• As of now, the sugar test failed for tap water.

Issues

• Unclear tubing for water level indicator; see figure. As result, water level is unclear to see. We need either colored water or glass tube. Other suggestion is to obtain a floating ball to indicate the water level in the tubing.