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A water treatment plant is required to process 50,000 m3 water per day. The rapid mixing tank will blend 50 mg/L of alum with the flow and have a detention time of 2 min. The power input (in kilowatt) necessary for a G value of 750 S-1 at water temperature 22°C is _____.
(use kinematic viscosity at 22°C as 1 × 10-6 m2/s)
    Correct answer is between '38.5,39.5'. Can you explain this answer?
    Verified Answer
    A water treatment plant is required to process 50,000 m3water per day....
    Power input (P) = μVG2
    Where, μ = dynamic viscosity of water
    V = volume of the tank
    G = velocity gradient

    P = 39.0625 kW
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    Most Upvoted Answer
    A water treatment plant is required to process 50,000 m3water per day....
    °C is:

    First, we need to calculate the volume of the rapid mixing tank:

    Volume = Flow rate x Detention time
    Volume = 50,000 m3/day x 2 min/60 min/hour x 1 hour/60 min
    Volume = 1,667 m3

    Next, we need to calculate the velocity gradient (G) for the rapid mixing tank:

    G = (2 x Power input) / (ρ x Volume x (Impeller diameter)3)
    Assuming an impeller diameter of 1 meter:
    750 S-1= (2 x Power input) / (1000 kg/m3 x 1667 m3 x 1 m3)3
    Power input = 1,440 kW

    Therefore, the power input necessary for a G value of 750 S-1 at water temperature 22°C is 1,440 kW.
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    A water treatment plant is required to process 50,000 m3water per day. The rapid mixing tank will blend 50 mg/L of alum with the flow and have a detention time of 2 min. The power input (in kilowatt) necessary for a G value of 750 S-1at water temperature 22°C is _____.(use kinematic viscosity at 22°C as 1 × 10-6m2/s)Correct answer is between '38.5,39.5'. Can you explain this answer?
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    A water treatment plant is required to process 50,000 m3water per day. The rapid mixing tank will blend 50 mg/L of alum with the flow and have a detention time of 2 min. The power input (in kilowatt) necessary for a G value of 750 S-1at water temperature 22°C is _____.(use kinematic viscosity at 22°C as 1 × 10-6m2/s)Correct answer is between '38.5,39.5'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about A water treatment plant is required to process 50,000 m3water per day. The rapid mixing tank will blend 50 mg/L of alum with the flow and have a detention time of 2 min. The power input (in kilowatt) necessary for a G value of 750 S-1at water temperature 22°C is _____.(use kinematic viscosity at 22°C as 1 × 10-6m2/s)Correct answer is between '38.5,39.5'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A water treatment plant is required to process 50,000 m3water per day. The rapid mixing tank will blend 50 mg/L of alum with the flow and have a detention time of 2 min. The power input (in kilowatt) necessary for a G value of 750 S-1at water temperature 22°C is _____.(use kinematic viscosity at 22°C as 1 × 10-6m2/s)Correct answer is between '38.5,39.5'. Can you explain this answer?.
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