A gravity settling tank is to be used to clean wastewater for an oil refinery. The wastewater contains 1% oil by volume as small droplets ranging 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 wastewater is to be cleaned of oil droplets, calculate the length of the settling tank. The specific gravity of oil is 0.87. For water, p= 1000 and u= 1 cP. Round your answer to the nearest foot.

A gravity settling tank is to be used to clean wastewater for an oil refinery. The wastewater contains 1% oil by volume as small droplets ranging 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 wastewater is to be cleaned of oil droplets, calculate the length of the settling tank. The specific gravity of oil is 0.87. For water, p= 1000 and u= 1 cP. Round your answer to the nearest foot.

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter8: Landfills

Section: Chapter Questions

Problem 8.10P

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