Physics · Environmental Engineering
The rate of filtration for a typical slow sand filter varies from _____ of the filter surface area.
- 110 to 15 m3 per day per m2
- 21 to 10 m3 per day per m2✓
- 35 to 10 m3 per day per m2
- 41 to 5 m3 per day per m2
Correct answer
1 to 10 m3 per day per m2
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