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sand bed filter is 50 ft in diameter and filled to a depth of 20 ft with sand. The sand particle diameter is 1 mm and the initial bed void fraction is .34. Wastewater containing 1% by volume suspended solids is fed to the filter at a rate of 4500 gpm by a positive displacement pump which can delvier this rate up to a

sand bed filter is 50 ft in diameter and filled to a depth of 20 ft with sand. The sand particle diameter is 1 mm and the initial bed void fraction is .34. Wastewater containing 1% by volume suspended solids is fed to the filter at a rate of 4500 gpm by a positive displacement pump which can delvier this rate up to a

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A sand bed filter is 50 ft in diameter and filled to a depth of 20 ft with sand. The sand particle diameter is 1 mm and the initial bed void fraction is .34. Wastewater containing 1% by volume suspended solids is fed to the filter at a rate of 4500 gpm by a positive displacement pump which can delvier this rate up to a discharge pressure of 45 psig. Determine how long in hours the filtration system can operate before shutting down for backwashing.

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