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A primary sedimentation tank (PST) is to treat water for 0.1 million population living in a town with Surface Overflow Rate (SOR) of 50000 Litre/m2/d. The diameter (in μm) of the spherical particle which will have 95 percent theoretical removal efficiency in this tank is _______________.  Assume the Stokes’s Law is valid for the settling velocity of the particles in water. It is given that: 
  • a)
    Density of water = 997 kg/m3
  • b)
    The specific gravity of particle = 2.72
  • c)
    Dynamic viscosity of water= 9.97 x 10-4 m2/s
  • d)
    24-25
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Aprimary sedimentation tank (PST) is to treatwater for 0.1 million pop...
Given:
Surface Overflow Rate = 50000 L/m2/day
Density of water = 997 kg/m3
The specific gravity of particle = 2.72
Dynamic viscosity of water= 9.97 x 10-4 m2/s
We know that settling velocity can be written as
Percentage removal =
= 0.95 × Overflow rate
= 2.4254×10−5
= 24.254 μm 
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Aprimary sedimentation tank (PST) is to treatwater for 0.1 million population living in a townwith Surface Overflow Rate (SOR) of 50000 Litre/m2/d. The diameter (in μm) of the spherical particle which will have 95 percent theoretical removal efficiency in this tank is _______________. Assume the Stokes’s Law is valid for the settling velocity of the particles in water. It is given that:a)Density of water = 997 kg/m3;b)The specific gravity ofparticle = 2.72c)Dynamic viscosity of water= 9.97 x 10-4m2/sd)24-25Correct answer is option 'D'. Can you explain this answer?
Question Description
Aprimary sedimentation tank (PST) is to treatwater for 0.1 million population living in a townwith Surface Overflow Rate (SOR) of 50000 Litre/m2/d. The diameter (in μm) of the spherical particle which will have 95 percent theoretical removal efficiency in this tank is _______________. Assume the Stokes’s Law is valid for the settling velocity of the particles in water. It is given that:a)Density of water = 997 kg/m3;b)The specific gravity ofparticle = 2.72c)Dynamic viscosity of water= 9.97 x 10-4m2/sd)24-25Correct answer is option 'D'. 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 Aprimary sedimentation tank (PST) is to treatwater for 0.1 million population living in a townwith Surface Overflow Rate (SOR) of 50000 Litre/m2/d. The diameter (in μm) of the spherical particle which will have 95 percent theoretical removal efficiency in this tank is _______________. Assume the Stokes’s Law is valid for the settling velocity of the particles in water. It is given that:a)Density of water = 997 kg/m3;b)The specific gravity ofparticle = 2.72c)Dynamic viscosity of water= 9.97 x 10-4m2/sd)24-25Correct answer is option 'D'. 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 Aprimary sedimentation tank (PST) is to treatwater for 0.1 million population living in a townwith Surface Overflow Rate (SOR) of 50000 Litre/m2/d. The diameter (in μm) of the spherical particle which will have 95 percent theoretical removal efficiency in this tank is _______________. Assume the Stokes’s Law is valid for the settling velocity of the particles in water. It is given that:a)Density of water = 997 kg/m3;b)The specific gravity ofparticle = 2.72c)Dynamic viscosity of water= 9.97 x 10-4m2/sd)24-25Correct answer is option 'D'. Can you explain this answer?.
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