11. A gravity settling tank is to be used to clean waste water from an oil refinery. The waste water contains 1% oil by volume as small droplets ranging in size from 100 to 1000 microns which will be removed from the water before the latter is to be discharged into the river. The tank is of rectangular section 2 ft wide by 4 ft deep with provisions for smooth continuous discharge of clean water and skimming off of oil at the surface of the discharge end. If 10,000 gal/min of waste water is to be cleaned of oil droplets, specific gravity of oil 0.87, the length of the settling tank is c. 5000 ft d. 4000 ft a. 4500 ft b. 4850 ft
11. A gravity settling tank is to be used to clean waste water from an oil refinery. The waste water contains 1% oil by volume as small droplets ranging in size from 100 to 1000 microns which will be removed from the water before the latter is to be discharged into the river. The tank is of rectangular section 2 ft wide by 4 ft deep with provisions for smooth continuous discharge of clean water and skimming off of oil at the surface of the discharge end. If 10,000 gal/min of waste water is to be cleaned of oil droplets, specific gravity of oil 0.87, the length of the settling tank is c. 5000 ft d. 4000 ft a. 4500 ft b. 4850 ft
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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please help me with these, advance thank you. :D
Transcribed Image Text:11. A gravity settling tank is to be used to clean waste water from an oil refinery. The
waste water contains 1% oil by volume as small droplets ranging in size from 100 to
1000 microns which will be removed from the water before the latter is to be
discharged into the river. The tank is of rectangular section 2 ft wide by 4 ft deep with
provisions for smooth continuous discharge of clean water and skimming off of oil at
the surface of the discharge end. If 10,000 gal/min of waste water is to be cleaned of
oil droplets, specific gravity of oil 0.87, the length of the settling tank is
c. 5000 ft
d. 4000 ft
a. 4500 ft
b. 4850 ft
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