A rapid sand filter is 15 feet wide, 15 feet long, and 6 feet deep. What is the filtration rate in gpm/sq ft if the flow is 0.675 mgd? Is that filtration rate acceptable to TCEQ? If the flow is 26,650 gph, would it be acceptable?
2.1 No, max filtration rate is 2. 1.97 gpm/sqft, so yes