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1 Choose the correct letter, A, B, C or D. Estimate the number of filters required for water treatment if the flow rate=1.4 m³/s, the design loading rate to the filter is 200 m³/d.m², and the surface area of each filter= 80 m². One of the following media has the lowest specific gravity in the filter body: What is representing the total alkalinity of water sample, if the pH of water <<=10.33 A 7 B HCOS 10 Garnet Anthracite CO₂ C 5 Sand H₂CO3 D 12 Gravel A+B

1 Choose the correct letter, A, B, C or D. Estimate the number of filters required for water treatment if the flow rate=1.4 m³/s, the design loading rate to the filter is 200 m³/d.m², and the surface area of each filter= 80 m². One of the following media has the lowest specific gravity in the filter body: What is representing the total alkalinity of water sample, if the pH of water <<=10.33 A 7 B HCOS 10 Garnet Anthracite CO₂ C 5 Sand H₂CO3 D 12 Gravel A+B

Structural Analysis
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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5 4 Choose the correct letter, A, B, C or D. Estimate the number of filters required for water treatment if the flow rate=1.4 m/s, the design loading rate to the filter is 200 m³/d.m², and the surface area of each filter= 80 m². One of the following media has the lowest specific gravity in the filter body: What is representing the total alkalinity of water sample, if the pH of water <=10.33 In the sedimentation tank, the over flow velocity depends on: What is the tip speed of an impeller in slow-mixing tank that has a diameter of 1.1 m and rotational speed of 0.6 rps? A 7 Garnet HCOS The flow rate 1.06 m/s B 10 Anthracite CO The surface area of the tank 2.39 m/s C 5 Sand D 12 2.07 m/s Gravel H₂CO3 A+B The detention A+B time 1.54 m/s
Transcribed Image Text:5 4 Choose the correct letter, A, B, C or D. Estimate the number of filters required for water treatment if the flow rate=1.4 m/s, the design loading rate to the filter is 200 m³/d.m², and the surface area of each filter= 80 m². One of the following media has the lowest specific gravity in the filter body: What is representing the total alkalinity of water sample, if the pH of water <=10.33 In the sedimentation tank, the over flow velocity depends on: What is the tip speed of an impeller in slow-mixing tank that has a diameter of 1.1 m and rotational speed of 0.6 rps? A 7 Garnet HCOS The flow rate 1.06 m/s B 10 Anthracite CO The surface area of the tank 2.39 m/s C 5 Sand D 12 2.07 m/s Gravel H₂CO3 A+B The detention A+B time 1.54 m/s
Expert Solution
Step 1

1)  No of filters = flowloading rate x filter area = 1.4*602*24200*80 = 7.56 ≅ 8

So, the beat option is (B) 10

2) Specific gravity of Garnet = 3.6

  Specific gravity of Anthracite = 1.4

 Specific gravity of Sand = 2.6 

  Specific gravity of Gravel = 2.4 

Hence, Anthracite has the least specific gravity.  option (B)

 

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