2. Consider the design of granular media filters for a water treatment plant with a design flow of 40 MGD (use an attachment efficiency of 0.9 for anthracite and 0.85 for sand) 1. For a filtration hydraulic loading of 5 gpm/ft2 determine the total filter area required for filtration (i square ft). Next, select the number of parallel filters needed, and their length and width (even foot increments), if each filter is square with area between 400 square feet. 2. You choose a dual media filter consisting of 36 inches of anthracite with an ES of 1 mm and a porosity of 0.4, and 36 inches of sand with an ES of 0.55 mm and a porosity is 0.35. Determine the superficial filtration velocity and the pore velocities in both the anthracite and sand layers. 3. Calculate the detention time (in minutes) through the entire depth of the f

2. Consider the design of granular media filters for a water treatment plant with a design flow of 40 MGD (use an attachment efficiency of 0.9 for anthracite and 0.85 for sand) 1. For a filtration hydraulic loading of 5 gpm/ft2 determine the total filter area required for filtration (i square ft). Next, select the number of parallel filters needed, and their length and width (even foot increments), if each filter is square with area between 400 square feet. 2. You choose a dual media filter consisting of 36 inches of anthracite with an ES of 1 mm and a porosity of 0.4, and 36 inches of sand with an ES of 0.55 mm and a porosity is 0.35. Determine the superficial filtration velocity and the pore velocities in both the anthracite and sand layers. 3. Calculate the detention time (in minutes) through the entire depth of the f

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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Highway drainage is the process of extracting and regulating the excess surface water on the pavement by giving the desired slope. The construction of a highway drain helps to divert the water present on the surface, and sub-grade by the means of slope. Highway drainage systems are a necessary part of smooth functioning of traffic, since the highway drainage systems provide proper disposal of unwanted substances from the highways.

Question

2. Consider the design of granular media filters for a water treatment plant with a design flow of 40 MGD.
(use an attachment efficiency of 0.9 for anthracite and 0.85 for sand)
1. For a filtration hydraulic loading of 5 gpm/ft2 determine the total filter area required for filtration (in
square ft). Next, select the number of parallel filters needed, and their length and width (even foot
increments), if each filter is square with area between 400 square feet.
2. You choose a dual media filter consisting of 36 inches of anthracite with an ES of 1 mm and a
porosity of 0.4, and 36 inches of sand with an ES of 0.55 mm and a porosity is 0.35. Determine the
superficial filtration velocity and the pore velocities in both the anthracite and sand layers.
3. Calculate the detention time (in minutes) through the entire depth of the f
4. Calculate the clean bed head loss (in feet) for the filter using the Carmen-Kozeny equation for both
media. Assume a water temperature of 68 °F and the design hydraulic loading rate. Use the media
effective size for media diameter in the calculation.
5. Estimate total the filtration efficiency for a particle that is 4 microns in diameter.

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