Design a vertical turbine flocculator to treat 75,700 m3/d of water per day at a detention time of 30 minutes.

Design a vertical turbine flocculator to treat 75,700 m3/d of water per day at a detention time of 30 minutes. Use three parallel treatment trains with four compartments per train. The temperature of the water is 20∘C, resulting in values of 1.002 × 10−3 kg/(m⋅s) and 998.2 kg/m3 for and ρ, respectively. The impeller diameter (D) to effective tank diameter (Te) ratio is 0.4. Assume a power number (Np) of 0.25 for a three pitch blade with camber, and a mean velocity gradient of 70s−1. Determine the following:

a. Dimensions of each compartment assuming they are cubes (m).

b. Impeller diameter (m).

c. Power input per compartment (W).

d. Rotational speed of each turbine (rpm).

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set up and solve a case-study example of the light-intensity distribution in a photochemical reactor.

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Write a critique on this technique of secondary-emission measurement.

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set up a mass transfer model and evaluate the variation of the local mass transfer coefficient at various locations in the plate.

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