*** This version of Confluence is for testing only and contains a copy of content from June 29th 2026. No changes will be preserved. ***
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- Create protocol for running experiments (i.e. determine control of parameters such as tube length, Vc, upflow velocity, etc.)
- Colette and Sarah will create this form by February 5, 2009
- Setup apparatus to begin completing experiments and calibrate floc blanket control weir
- All group members are responsible for completing this by February 11, 2009
- Complete experiments that vary tube diameter
- All group members are responsible for completing this by February 27, 2009
- Complete experiments that vary flow rates
- All group members are responsible for completing this by March 20, 2009
- Design and complete experiment to vary tube length
- All group members are responsible for completing this by April 17, 2009
Detailed Task List
Please check the following when running the system:
- Constant floc blanket depth is established and recorded in data file (~53cm)
- Tube settlers are at appropriate distance (see table below) from top of floc blanket
- Tube settlers are appropriately oriented around the waste outlets
- All parameters in process controller are appropriate for experiment, especially:
- Effluent flow rate
- Influent turbidity
- Alum flow rate
- There are no air bubbles in the system, especially not in the flocculator
- Waste valve (located just after flocculator) is closed
- Process control is writing data to file
Comment frequently in data file: data is only valuable when there are keen observations to accompany and validate the numerical values
Experiment I:
The first series of experiments will evaluate the effect of tube settler diameter on effluent turbidity. Three different tube diameters will be tested with the same up flow velocity of 100 m3/day. The system will be run continuously for the duration of the experiment: floc blanket will be maintained during the changing of the tube settlers. Tube settlers will not be inserted into the distillation column prior to the establishment of the floc blanket so that there is no floc build-up on the tube settlers prior to data collection. Each diameter will be tested for at least twenty-four hours.
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