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Design a cubic rapid mixer for a water treatment plant with a peak flow rate of...

Design a cubic rapid mixer for a water treatment plant with a peak flow rate of 20,000 m3/d.  Assume the velocity gradient G in the mixer is to be at least 1,000 s-1and the detention time is at least 10 s. Determine the size of the mixing tank, the power input, and the rotational speed of the mixer if the radial flow impeller power number is 6.0

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Answer #1

Formula used

Volume= peak flow rate x Detention time

power = (velocity gradient)2 x ( volume) x ( dynamic viscosity of water)

power = ( power number)x(density of liquid)x(rotating speed)3 x( diameter of impeller)5

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