QI:- Design a settling tank for a flow of 0.2 MGD if the overflow rate is not to exceed 600 gpd/f, Calculate dimensions if the tank is circular with a depth of 12 ft. Calculate dimensions if the tank is rectangular with a depth of 10 ft and a length to width ratio of 4 to 1
QI:- Design a settling tank for a flow of 0.2 MGD if the overflow rate is not to exceed 600 gpd/f, Calculate dimensions if the tank is circular with a depth of 12 ft. Calculate dimensions if the tank is rectangular with a depth of 10 ft and a length to width ratio of 4 to 1
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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QI:- Design a settling tank for a flow of 0.2 MGD if the overflow rate is not to
exceed 600 gpd/n, Calculate dimensions
the tank is circular with a depth of 12
ft.
Calculate dimensions if the tank is rectangular with a depth of 10 fi and a length to
width ratio of 4 to 1
Q2:- The settling velocity of alum floc is approximately 0.0014 fl/s in water at 10°
C. Calculate the equivalent overflow rate in gpd/ft2. What is the minimum
detention time in hours to settle out alum floc in an ideal basin with a depth of 10
ft?
Q3:- Two rectangular clarifiers, cach 30 ft long, 15 ft wide, settle 0.40 MGD
following alum coagulation. The effluent channels have a total weir length of 60
ft. Calculate the detention time, horizontal velocity, rate of flow over the outlet
weir. Do these values meet the GLUMRB Standards for water works?
Q4:- Calculate the diameter and depth of a circular sedimentation basin for a
design flow of 3800 m3/d based on an overflow rate of 0.00024 m/s and a
detention time of 3 hr
II
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