A city is planning to install a new settling tank as an upgrade to their existing water treatment plant. Design a settling tank to remove 65% of the influent suspended solids from their design flow of 0.5 m² /s. A batch-settling test using a 2.0 m column and coagulated water from their existing plant yielded the following data: Percent removal as a function of time and depth Sampling time, min Depth, m 0.5 10 20 40 60 90 120 41 50 60 67 72 73 76 1.0 19 33 45 58 62 70 74
A city is planning to install a new settling tank as an upgrade to their existing water treatment plant. Design a settling tank to remove 65% of the influent suspended solids from their design flow of 0.5 m² /s. A batch-settling test using a 2.0 m column and coagulated water from their existing plant yielded the following data: Percent removal as a function of time and depth Sampling time, min Depth, m 0.5 10 20 40 60 90 120 41 50 60 67 72 73 76 1.0 19 33 45 58 62 70 74
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A city is planning to install a new settling tank as an upgrade to their existing water treatment
plant. Design a settling tank to remove 65% of the influent suspended solids from their design
flow of 0.5 m /s. A batch-settling test using a 2.0 m column and coagulated water from their
existing plant yielded the following data:
Percent removal as a function of time and depth
Sampling time, min
Depth, m
5
10
20
40
60
90
120
0.5
41
50
60
67
72
73
76
1.0
19
33
45
58
62
70
74
2.0
15
31
38
54
59
63
71
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