For a sand filtration device, the flow rate of the influent is 30 m3/day with the sand filter area of 10 m2. Which of the following is wrong? A. This is a high-rate sand filter B. This is a slow sand filter C. The sand filter has a loading rate of 3 m3/(d·m2) D. Sand filter requires backwash or replacement at certain frequencies.
For a sand filtration device, the flow rate of the influent is 30 m3/day with the sand filter area of 10 m2. Which of the following is wrong? A. This is a high-rate sand filter B. This is a slow sand filter C. The sand filter has a loading rate of 3 m3/(d·m2) D. Sand filter requires backwash or replacement at certain frequencies.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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For a sand filtration device, the flow rate of the influent is 30 m3/day with the sand filter area of 10 m2. Which of the following is wrong?
A. This is a high-rate sand filter
B. This is a slow sand filter
C. The sand filter has a loading rate of 3 m3/(d·m2)
D. Sand filter requires backwash or replacement at certain frequencies.
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