Question 3004 of 234 · California Wastewater Operator Exam
The typical approach velocity in the channel ahead of a mechanically cleaned bar screen is about
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Correct answer to question 3004
- D: 2.0 to 3.25 feet per second
Explanation
EPA lists an approach velocity of 0.6 to 1.0 m/s (2.0 to 3.25 ft/s) for mechanically cleaned bar screens. Much lower velocities let solids settle in the channel.
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