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A filter 30 feet (ft) long by 12 ft wide treats a flow of 4.4 million gallons per day (MGD). What is the filtration rate in gpm/ft2?1) 1.2 gpm/ft^2.
2) 81.8 gpm/ft^2.
3) 3,055.6 gpm/ft^2.
4) 8.5 gpm/ft^2.

Sagot :

onyebuchinnaji

Answer:

(4) 8.5 gpm/ft²

Explanation:

Given;

length of the filter, L = 30 ft

width of the filter, w = 12 ft

the filtration rate, Q = 4.4 x 10⁶ GPD

Area of the filter; A = 30 ft x 12 ft = 360 ft²

The filtration rate in gallon per minutes (gpm) is calculated as;

[tex]Q = 4.4 \times 10^6 \ (\frac{gallon}{day} \times \frac{1 \ day}{24 \ hours} \times \frac{1 \ hour}{60 \min} ) = 3,055.556 \ gpm[/tex]

The filtration rate in gallon per minutes per feet squared (gpm/ft²) is calculated as;

[tex]Q = \frac{3,055.556 \ gpm}{360 \ ft^2} = 8.49 \ \frac{gpm}{ft^2} \ = \ 8.5 \ \frac{gpm}{ft^2}[/tex]

Therefore, the filtration rate in gpm/ft² is 8.5 gpm/ft²

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