A rapid medium is sand with an effective size of 0.55 mm, a uniformity coefficient of 1.4, and a depth of 1 m. The filters are each washed once per 24-h period. The washing process involves 10 min of fluidization and requires that the filter be out of service 30 min. The treated flow is wasted for the first 30 min of each run. Determine the volume of treated water produced per day at a nominal filtration rate of 180 m/day and the percentage of the product water required for backwash.

A rapid medium is sand with an effective size of 0.55 mm, a uniformity coefficient of 1.4, and a depth of 1 m. The filters are each washed once per 24-h period. The washing process involves 10 min of fluidization and requires that the filter be out of service 30 min. The treated flow is wasted for the first 30 min of each run. Determine the volume of treated water produced per day at a nominal filtration rate of 180 m/day and the percentage of the product water required for backwash.

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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