Reference no: EM13562598
The town of Eau Gaullie has requested proposals for a new coagulation water treatment plant. The design flow for the plant is 0.1065 m 3 /s. The average annual water temperature is 19'C. The following design assumptions for a rapid-mix tank have been made:
1. Number of tanks 1 (with 1 backup spare)
2. Tank configuration: circular with liquid depth 2 diameter
3. Detention time 10 s
4. Velocity gradient 800 s 1
5. Impeller type: turbine, 6 flat blades, N p 5.7
6. Available impeller diameters: 0.45, 0.60, and 1.2 m
7. Assume B (1/3) H
Design the rapid-mix system by providing the following:
1. Water power input in kW
2. Tank dimensions in m
3. Diameter of the impeller in m
4. Rotational speed of impeller in rpm