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- 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
Below are descriptions of the three experiments that we intend to run this semester. Parameters are listed in tables below the descriptions. Also, please note that we intend to fully automate our system within each experiment. However, in between experiments, we will drain and rinse the system.
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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Experiment III
The third series of experiments will evaluate the effect of geometry (length and diameter) on the effluent turbidity. L/b, Vc, L, and Q will be determined after analyzing results from experiments I and II.
Please note that experiments II and III both test the effects of keeping critical velocities constant while varying a certain parameter: in experiment I, the varying parameter is the flow rate; in experiment II, the varying parameter is the tube settler geometry.
!table_2.png|width=700px!h2.
Table 1.1
Table 1.2
Bibliography
List references for your project that your team has found in literature searches.
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