Engineering Board Exam Reviewer · Environmental Engineering · hard
In an ideal sedimentation basin with an overflow rate of 30 m3/m2· day, what fraction of particles with a settling velocity of 1.0 m/h will be removed?
- 100%
- 80%
- 125%
- 3%
Answer
B. 80%
Solution
OFR = 30 m/d = 1.25 m/h. Particles with vs < OFR are removed in proportion vs/OFR = 1.0/1.25 = 80%.
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