What is the average filtration rate (in GPM/sq. ft.) for a plant with three 10-foot square filters that treats 1 million gallons in 24 hours of continuous operation?

Question

Quizplus · Accepted Answer

The average filtration rate for a plant with three 10-foot square filters that treats 1 million gallons per day is 2.32 GPM/sq. ft.
Solution: Filtration rate = total gallons treated per unit of time / total filter surface area
= (1,000,000 gallons/day x (1 day/1,440 minutes)) / (3 x 10 ft x 10 ft)
= (695 gallons/minute (GPM)) / (300 square feet)
= 2.32 GPM/sq. ft.

What Is the Average Filtration Rate (In GPM/sq