Gravity Powered System Adjustment

[ChingPangggg]

Tasks:

1. Measure actual flow rate of the gravity powered system by timing water exiting the effluent
2. Check if the flow rate is at 0.76 mL/s
3. Adjust the height if the flow rate does not agree with the upflow velocity of 1.5 mm/s

[ChingPangggg]

06/15/2018 First test of flow rate (effluent): 0.4762 ml/s --> (need to adjust the height to reach 0.76 ml/s) Shortened the tubing between the T-connection and the fluoride tank

Since the first test is done with the waste line plugged in. If 10% of the flow goes into the waste line when it is open, meaning that with the waste line plugged in, the flow rate of the effluent should be (0.76 mL/s) /(90%)= 0.844 mL/s

[ChingPangggg]

Added Bars to the system to make sure the filled constant head tank and fluoride stock tank are stable.

[cheertsang]

Set up gravity powered system, fixed all leaks and structural instabilities. Adjusted height of fluoride constant head tank and height of sedimentation tube to achieve upflow velocity of 1.5 mm/s.