Example A rectangular sedimentation tank with W=25m, L=50m and h=3m. The flow rate = 1500 m/h, and the influent particles concentration = following table shows the percentage of particles as a function of his diameter: 2000mg/l. The Volume of particle (mm) 0.001 10 0.005 20 0.01 15 0.015 15 0.02 20 0.025 20 Find: 1) Settling velocity, if particles density = 2650 kg/ m' and viscosity of water = 1.002*10°N.s/m? 2) Percentage removal for each particle and total percentage removal 3) Sludge depth, if the tank is cleaned one time per month. If percentage of solide = 8% and sludge density = 1150 kg/ m

Example A rectangular sedimentation tank with W=25m, L=50m and h=3m. The flow rate = 1500 m/h, and the influent particles concentration = following table shows the percentage of particles as a function of his diameter: 2000mg/l. The Volume of particle (mm) 0.001 10 0.005 20 0.01 15 0.015 15 0.02 20 0.025 20 Find: 1) Settling velocity, if particles density = 2650 kg/ m' and viscosity of water = 1.002*10°N.s/m? 2) Percentage removal for each particle and total percentage removal 3) Sludge depth, if the tank is cleaned one time per month. If percentage of solide = 8% and sludge density = 1150 kg/ m

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Еxample
A rectangular sedimentation tank with W=25m, L=50m and h=3m. The flow
rate = 1500 m/h, and the influent particles concentration = 2000mg/l. The
following table shows the percentage of particles as a function of his diameter:
Volume of particle (mm)
0.001
10
0.005
20
0.01
15
0.015
15
0.02
20
0.025
20
Find:
1) Settling velocity, if particles density = 2650 kg/ m’ and viscosity of water
= 1.002*10*N.s/m?
2) Percentage removal for each particle and total percentage removal
3) Sludge depth, if the tank is cleaned one time per month. If percentage of
solide = 8% and sludge density = 1150 kg/ m³
4) Effluent concentration particles

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