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10 Cards in this Set

  • Front
  • Back
Find how many gallons of liquid are in a tank which measures 40' long, 25' wide, and 12' high

a. 89772
b. 79872
c. 67859
d. 90272
a. 89772
If the influent SS are 200mg/L and the effluent SS are 16mg/L what is the removal efficiency?

a. 93%
b. 92%
c. 85%
d. 97%
b. 92%
If a sludge draw off of 8000g contains 6% soids, how many lbs were pumped?

a. 2842lbs
b. 2916lbs
c. 4003lbs
d. 16091lbs
c. 4003lbs
If two pumps will pump 120gpm each, how long will it take to fill a tank 50' long, 20' wide, and 8' deep?

a. 2hrs 27min
b. 4hrs 42min
c. 4hrs 9min
d. 1hr 49min
c. 4hrs 9min
What is the approximate volume of flow (MGD) treated in a 7' wide, 4' deep grit chamber, if a floating stick moves 24' in 30 seconds?

a. 13.65MGD
b. 16.7MGD
c. 15.42MGD
d. 14.52MGD
d. 14.52MGD
The formula for calculating the volume of a wet well is:

a. V = L x W x C
b. V = W x A x P
c. V = W x L x H
d. V = W x H x D
c. V = W x L x H
The diameter of a wet well is 10'. If filled to a depth of 10', It will contain approximately:

a. 2987g
b. 5875g
c. 6024g
d. 10,602g
b. 5875g
A sludge pump with a 6" bore and 3" stroke pumps 60 cycles/min. What is the pumping rate in gpm?

a. 22.5gpm
b. 18gpm
c. 26.75gpm
a. 22.5gpm
What is the average detention time in a clarifier given the following:
Diameter is 30'
Depth is 15'
Flow is 700gpm

a. 1hr 34min
b. 1hr 53min
c. 1hr 47min
b. 1hr 53min
What is the average detention time in a clarifier given the following:
Diameter is 80'
Depth is 12.2'
Flow is 5MGD

a. 2.2hrs
b. 1.68hrs
c. 2.4hrs
a. 2.2hrs