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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
In the continuing design of Laramie’s rapid sand filter (Problems 11-12, 11-13 and 11-17 ), determine the area of each filter cell and the plan dimensions of a filter box. Assume a gullet width of 0.8 m.
Problem 12
The rapid sand filter being designed for Laramie has the characteristics shown below. Using the Rose equation, determine the headless for the clean filter bed in a stratified condition.

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Problem 13
Determine the maximum backwash rate and the height of the expanded bed for the sand used in Problem 11-12.
Problem 12
 The rapid sand filter being designed for Laramie has the characteristics shown below. Using the Rose equation, determine the headless for the clean filter bed in a stratified condition.

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Problem 17
Determine the number of filter beds for Laramie (Problem 11-12) if the maximum day design flow rate is 55,000 m3 /d.
Problem 12
The rapid sand filter being designed for Laramie has the characteristics shown below. Using the Rose equation, determine the headless for the clean filter bed in a stratified condition.

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