Geoscience Reference
In-Depth Information
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EXAMPLE 1.17
Convert gallons per minute (gpm) to million gallons per day (MGD).
Flow (gpm) 1440 min/day
1,000,000
×
Flow (MGD)
=
gal/MG
Problem:
The flow meter indicates that the current flow rate is 1469 gpm. What is the flow rate in
million gallons per day?
Solution:
1469 gpm 1440 min/day
1,000,000 gal/MG
×
Flow
=
= 2.12 MGD (rounded)
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EXAMPLE 1.18
Convert gallons per day (gpd) to million gallons per day (MGD).
Flow (gal/day)
1,000,000 gal/MG
Flow (MGD)
=
Problem:
The totalizing flow meter indicates that 33,444,950 gal of wastewater have entered the
plant in the past 24 hr. What is the flow rate in million gallons per day?
Solution:
33,444,950 gal/day
1,000,000 gal/MG
Flow
=
= 44 MGD
33.
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EXAMPLE 1.19
Convert flow in cubic feet per second (cfs) to million gallons per day (MGD).
Flow (cfs)
1.55 cfs/MG
Flow (MGD)
=
Problem:
The flow in a channel is determined to be 3.89 cubic feet per second (cfs). What is the flow
rate in million gallons per day (MGD)?
Solution:
3.89 cfs
1.55 cfs/MG
Flow
=
=
2.5 MGD
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EXAMPLE 1.20
Problem:
The water in a tank weighs 675 lb. How many gallons does it hold?
Solution:
Water weighs 8.34 lb/gal; therefore,
675 lb
8.34 lb/gal
=
80.9 gal
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