If a wastewater lagoon measured 50 feet long by 40 feet wide

If a wastewater lagoon measured 50 feet long by 40 feet wide and were treating a daily flow of 3 MGD, what is the surface loading rate? a. 1.04 gpm/sq ft b. 11.04 gpm/sq ft c. 111.04 gpm/sq ft

Please show how to calulate

Solution

Flow rate = 3 MGD = 3*1000000 gallons / (24*60) minute = 2083.33 gpm ( 1 day = 24*60 minutes)

Surface loading rate = Flow rate / area = 2083.33 / 2000 = 1.04 gpm/sq ft