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
• Performed the sugar test
• Attached the water level indicator to paper with red tape to make water level more visible

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.
• Sugar test: tiny bubbles formed in tap water (supersaturated) when sugar was added.

Issues

• Need to collect lots of data and test grain sizes