A rotary drum filter with 30% submergence is used to filter concentrated aqueous slurry of calcium carbonate containing 15lb of solids per cubic foot of water. The pressure drop is 20¹¹Hg. If the filter cake contains 50% mixture (wet basis), calculate the filter area required to filter 10 gal/min of slurry. The filter cycle time is 5 min. The specific cake resistance depends on the pressure drop as:
(ft/lb) = ( p)^0.26, where = 2.90 10¹⁰

Question

TuteeHUB · Accepted Answer

82 ft<sup>2</sup>

TuteeHUB · Answer

nViscosity of the filtrate = 6.72 10-4 lb/ft-s. Density of calcium carbonate = 168.8 lb/ft3. Neglect filter medium resistance.

TuteeHUB · Answer

88 ft2

TuteeHUB · Answer

86 ft2

TuteeHUB · Answer

82 ft2

TuteeHUB · Answer

90 ft2

1.	A rotary drum filter with 30% submergence is used to filter concentrated aqueous slurry of calcium carbonate containing 15lb of solids per cubic foot of water. The pressure drop is 20¹¹Hg. If the filter cake contains 50% mixture (wet basis), calculate the filter area required to filter 10 gal/min of slurry. The filter cycle time is 5 min. The specific cake resistance depends on the pressure drop as: (ft/lb) = ( p)^0.26, where = 2.90 10¹⁰
A.	nViscosity of the filtrate = 6.72 10<sup>-4</sup> lb/ft-s. Density of calcium carbonate = 168.8 lb/ft<sup>3</sup>. Neglect filter medium resistance.
B.	88 ft<sup>2</sup>
C.	86 ft<sup>2</sup>
D.	82 ft<sup>2</sup>
E.	90 ft<sup>2</sup>
Answer» D. 82 ft<sup>2</sup>

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