1|Page
TEXAS SINGLEPHASE PUMP EXAM COMPLETE
VERIFIED QUESTIONS AND DETAILED SOLUTIONS
LATEST UPDATE THIS YEAR||NEWEST EXAM!!!
What are some of the causes of filaments in the aeration
basin? - Answer-a. low DO
b. low organic loading
c. septic wastes
d. nutrient deficiencies.
e. high sulfur content
When an RBC is operating correctly, how will the slime
appear on the media? - Answer-Grey to brown 0.05 to 0.1
inches thick
What activated sludge process does not achieve complete
nitrification? - Answer-Contact Stabilization
In the selection of forced main wastewater piping, what is
the minimum working pressure? - Answer-150 psi
,2|Page
The oxygen depletion of BOD dilution water should not
exceed - Answer-0.2 mg/L.
What is the minimum air gap when making water and
wastewater connections? - Answer-Minimum of one inch
or twice the inlet pipe size whichever is greater.
An anaerobic digester must maintain an average year
round temperature of - Answer-95 degrees F.
Which of the following methods would you use to increase
the degree of nitrification in an activated sludge plant? -
Answer-increase dissolved oxygen levels and increase the
sludge age
Which of the following are considered normal operator
controls on an activated sludge plant? - Answer-*aeration
rates *return and wasting rates
Reducing the return sludge flow rate for an activated
sludge system which has a good settling sludge will
________. - Answer-increase the sludge retention time
,3|Page
(SRT) and potentially increase the mixed liquor suspended
solids (MLSS) concentration in the aeration tank.
This can lead to a thicker sludge blanket in the clarifier, but
it might also increase the risk of sludge bulking if the solids
concentration becomes too high.
An extended air activated sludge plant has a fast settling
sludge and high amounts of pin floc leaving the clarifier.
One way to correct this problem is to ________. - Answer-
reduce the sludge wasting rate or decrease the return
activated sludge (RAS) rate.
A treatment plant has two primary clarifiers. Each has a
diameter of 40 feet and a depth of 12 feet. If the design
flow is 1.2 mgd, find the surface loading on each clarifier in
gallons/ft2/day. Assume the flow is equally split between
the two clarifiers. - Answer-b. 478 gallons/ft2/day
Distilled water used for the BOD analysis should not
exceed ________. - Answer-0.2 mg/L depletion
, 4|Page
One element of being an effective communicator is to
________. - Answer-be a good listener
In order to promote a collaborative management style, one
thing a supervisor can do is ________. - Answer-join the
team as a member rather than as boss
One thing an employee can do to be a good team member
is to ________. - Answer-try to understand other people's
needs and desires
Seeding of BOD samples is necessary when samples
________. - Answer-a. have a chlorine residual
b. have previously been chlorinated
c. have been subjected to high temperatures
d. contain high or low pH industrial wastes
A 30-inch diameter wastewater interceptor is observed to
be flowing half-full at about two fps. The approximate
volume of wastewater flowing through the pipe is
________. - Answer-The approximate volume of
wastewater flowing through the pipe is about 4.91 cubic
feet per second (cfs), or 2203.2 gallons per minute (GPM).
TEXAS SINGLEPHASE PUMP EXAM COMPLETE
VERIFIED QUESTIONS AND DETAILED SOLUTIONS
LATEST UPDATE THIS YEAR||NEWEST EXAM!!!
What are some of the causes of filaments in the aeration
basin? - Answer-a. low DO
b. low organic loading
c. septic wastes
d. nutrient deficiencies.
e. high sulfur content
When an RBC is operating correctly, how will the slime
appear on the media? - Answer-Grey to brown 0.05 to 0.1
inches thick
What activated sludge process does not achieve complete
nitrification? - Answer-Contact Stabilization
In the selection of forced main wastewater piping, what is
the minimum working pressure? - Answer-150 psi
,2|Page
The oxygen depletion of BOD dilution water should not
exceed - Answer-0.2 mg/L.
What is the minimum air gap when making water and
wastewater connections? - Answer-Minimum of one inch
or twice the inlet pipe size whichever is greater.
An anaerobic digester must maintain an average year
round temperature of - Answer-95 degrees F.
Which of the following methods would you use to increase
the degree of nitrification in an activated sludge plant? -
Answer-increase dissolved oxygen levels and increase the
sludge age
Which of the following are considered normal operator
controls on an activated sludge plant? - Answer-*aeration
rates *return and wasting rates
Reducing the return sludge flow rate for an activated
sludge system which has a good settling sludge will
________. - Answer-increase the sludge retention time
,3|Page
(SRT) and potentially increase the mixed liquor suspended
solids (MLSS) concentration in the aeration tank.
This can lead to a thicker sludge blanket in the clarifier, but
it might also increase the risk of sludge bulking if the solids
concentration becomes too high.
An extended air activated sludge plant has a fast settling
sludge and high amounts of pin floc leaving the clarifier.
One way to correct this problem is to ________. - Answer-
reduce the sludge wasting rate or decrease the return
activated sludge (RAS) rate.
A treatment plant has two primary clarifiers. Each has a
diameter of 40 feet and a depth of 12 feet. If the design
flow is 1.2 mgd, find the surface loading on each clarifier in
gallons/ft2/day. Assume the flow is equally split between
the two clarifiers. - Answer-b. 478 gallons/ft2/day
Distilled water used for the BOD analysis should not
exceed ________. - Answer-0.2 mg/L depletion
, 4|Page
One element of being an effective communicator is to
________. - Answer-be a good listener
In order to promote a collaborative management style, one
thing a supervisor can do is ________. - Answer-join the
team as a member rather than as boss
One thing an employee can do to be a good team member
is to ________. - Answer-try to understand other people's
needs and desires
Seeding of BOD samples is necessary when samples
________. - Answer-a. have a chlorine residual
b. have previously been chlorinated
c. have been subjected to high temperatures
d. contain high or low pH industrial wastes
A 30-inch diameter wastewater interceptor is observed to
be flowing half-full at about two fps. The approximate
volume of wastewater flowing through the pipe is
________. - Answer-The approximate volume of
wastewater flowing through the pipe is about 4.91 cubic
feet per second (cfs), or 2203.2 gallons per minute (GPM).
