What is the total volume of a grit chamber designed to handle an average daily flow of 3 million gallons with a peak flow ratio of 2.5, and a detention time of 3 minutes? A)540 ft³ B)1,350 ft³ C)2,079 ft³ D)6,250 ft³

Question

Quizplus · Accepted Answer

The total volume of the grit chamber is 2,079 ft³ is required to handle an average flow of 3 million gallons per day (mgd), with a peak flow ratio of 2.5 with a detention time of 3 minutes. Solution: Volume of grit chamber = Peak Flow x detention time Where, peak flow = average flow x peak flow ratio = 3 mgd x 2.5 = 7.5 mgd Given, 1 mgd = 1.54 ft³/seconds (sec) Volume = 7.5 mgd x 1.54 ft³/sec x 3 minutes x 60 sec/minute = 2,079 ft³

What Is the Total Volume of a Grit Chamber Designed