the following data were obtained in a pilot test of a UV disinfection system. th
ID: 126151 • Letter: T
Question
the following data were obtained in a pilot test of a UV disinfection system.the following data were obtained in a pilot test of a UV disinfection system.
the following data were obtained in a pilot test of a UV disinfection system.
The following data were obtained in a pilot test of a UV disinfection system. A UV dose of 30 mJ/cm2 is to be maintained Required: A more realistic dose for Water Reuse would be 100 mJ/cm 2 A. B. Determine the flowrate per lamp for each of the ballast settings Determine the lowest ballast setting that can be used to meet the required dosage. UV Dose based on the collimated beam Flowrate Ballast per lamp Output Log Percent) Inactivation (mJ/cm 1.15 1.01 0.93 1.66 1.45 1.51 1.85 1.59 1.5 Flowrate (LMa 100 140 188 100 140 188 100 140 188 25 35 47 25 35 47 25 35 47 60 60 60 80 80 80 100 100 100 26.2 21.8 20.5 34.6 29.4 28.5 40.7 31.7 29.2
Explanation / Answer
A. Ans
when the Flow rate is 100 per lamp flow rate per liter is 25
Flowrate per lamp for each of the ballet setting is
60% of 25 = 60/100 *25 = 15per lamp for each of the ballet
60% of 35 = 60/100*35 = 21 per lamp for each of the ballet
60% of 47 = 60/100*47 = 28.2per lamp for each of the ballet
80% of 25 = 80/100*25 = 20per lamp for each of the ballet
80% of 35 = 80/100*35 = 28per lamp for each of the ballet
80% of 47 = 80/100*47 = 37.6per lamp for each of the ballet
100% of 25 = 100/100 *25 = 25per lamp for each of the ballet
100% of 35 = 100/100 *35 = 35per lamp for each of the ballet
100% of 47 = 100/100*47 = 47per lamp for each of the ballet
B.Ans:
80% of ballet setting with flow rate of 35 can be used to meet the required dosage which dose UV based on the collimated beam is 29.4mj/cm2. (As the ideal UV dose to be maintained is 30mj/cm2)
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