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A rapid sand filter is provided in a water treatment plant for a population of 2 lakh. There are 6 filters used in it, each having a surface area 40 m². Depth of each bed is 0.5 m and its porosity is 0.5. For backwashing of each filter, water is used with a discharge of 0.3 m³/s and depth of bed expands to 0.55 m. If drag force coefficient of flow is 5 and specific gravity of sand filter particle is 2.65. The effective size of particle (in mm) is (Assume backflow is in transition)

A rapid sand filter is provided in a water treatment plant for a population of 2 lakh. There are 6 filters used in it, each having a surface area 40 m². Depth of each bed is 0.5 m and its porosity is 0.5. For backwashing of each filter, water is used with a discharge of 0.3 m³/s and depth of bed expands to 0.55 m. If drag force coefficient of flow is 5 and specific gravity of sand filter particle is 2.65. The effective size of particle (in mm) is (Assume backflow is in transition)

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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Water treatment plant question
A rapid sand filter is provided in a water treatment plant for a population of 2 lakh. There are 6 filters used in it, each having a surface area 40 m². Depth of each bed is 0.5 m and its porosity is 0.5. For backwashing of each filter, water is used with a discharge of 0.3 m³/s and depth of bed expands to 0.55 m. If drag force coefficient of flow is 5 and specific gravity of sand filter particle is 2.65. The effective size of particle (in mm) is (Assume backflow is in transition)
Transcribed Image Text:A rapid sand filter is provided in a water treatment plant for a population of 2 lakh. There are 6 filters used in it, each having a surface area 40 m². Depth of each bed is 0.5 m and its porosity is 0.5. For backwashing of each filter, water is used with a discharge of 0.3 m³/s and depth of bed expands to 0.55 m. If drag force coefficient of flow is 5 and specific gravity of sand filter particle is 2.65. The effective size of particle (in mm) is (Assume backflow is in transition)
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