Determine the head loss for a clean filter bed using the Carman-Kozeny equation for a stratified bed with uniform porosity of 0.45. The rapid sand filter is made up of a 24-in deep bed of sand, specific gravity of 2.65, shape factor (Ø) = 0.82, temperature of 50°F and filtration rate of 2.5 gpm/ft². A sieve analysis is presented below. % Sand retained (Xjj) (2) Sieve # (1) 14-20 20-28 28-32 32-35 35-42 42-48 48-60 60-65 65-100 0.87 8.63 26.30 30.10 20.64 7.09 3.19 2.16 1.02 100 (ft x 10-¹) (3) 32.8300 23.33 17.79 15.000 12.58 10.58 8.88 7.46 5.83
Determine the head loss for a clean filter bed using the Carman-Kozeny equation for a stratified bed with uniform porosity of 0.45. The rapid sand filter is made up of a 24-in deep bed of sand, specific gravity of 2.65, shape factor (Ø) = 0.82, temperature of 50°F and filtration rate of 2.5 gpm/ft². A sieve analysis is presented below. % Sand retained (Xjj) (2) Sieve # (1) 14-20 20-28 28-32 32-35 35-42 42-48 48-60 60-65 65-100 0.87 8.63 26.30 30.10 20.64 7.09 3.19 2.16 1.02 100 (ft x 10-¹) (3) 32.8300 23.33 17.79 15.000 12.58 10.58 8.88 7.46 5.83
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Determine the head loss for a clean filter bed using the Carman-Kozeny equation for a stratified
bed with uniform porosity of 0.45. The rapid sand filter is made up of a 24-in deep bed of sand,
specific gravity of 2.65, shape factor (Ø) = 0.82, temperature of 50°F and filtration rate of 2.5
gpm/ft². A sieve analysis is presented below.
Sieve #
(1)
14-20
20-28
28-32
32-35
35-42
42-48
48-60
60-65
65-100
% Sand retained
(X.)
(2)
0.87
8.63
26.30
30.10
20.64
7.09
3.19
2.16
1.02
100
dij
(ft x 10-4)
(3)
32.8300
23.33
17.79
15.000
12.58
10.58
8.88
7.46
5.83
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