Vertical turbines are to be used for flocculation in a water treatment plant with a design flow rate of 189,270 m³/day. Flocculation is to be designed with two trains and five compartments per train. The total detention time in this process is to be 25 minutes, and the average temperature of the water flowing into the plant is 10°C. The velocity gradient in the first compartment is to be 70 s²¹. Make the following design decisions for the first compartment: a) Determine the dimensions of the compartment. b) Determine the diameter of the impeller. c) Determine the water power required. d) Determine the maximum rotational speed.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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3. Vertical turbines are to be used for flocculation in a water treatment plant with a
design flow rate of 189,270 m³/day. Flocculation is to be designed with two trains
and five compartments per train. The total detention time in this process is to be 25
minutes, and the average temperature of the water flowing into the plant is 10°C. The
velocity gradient in the first compartment is to be 70 s¹. Make the following design
decisions for the first compartment:
a) Determine the dimensions of the compartment.
b) Determine the diameter of the impeller.
c) Determine the water power required.
d) Determine the maximum rotational speed.
e) Estimate the pumping capacity of the impeller and circulation time in the
tank.
Transcribed Image Text:3. Vertical turbines are to be used for flocculation in a water treatment plant with a design flow rate of 189,270 m³/day. Flocculation is to be designed with two trains and five compartments per train. The total detention time in this process is to be 25 minutes, and the average temperature of the water flowing into the plant is 10°C. The velocity gradient in the first compartment is to be 70 s¹. Make the following design decisions for the first compartment: a) Determine the dimensions of the compartment. b) Determine the diameter of the impeller. c) Determine the water power required. d) Determine the maximum rotational speed. e) Estimate the pumping capacity of the impeller and circulation time in the tank.
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