TEXAS WASTEWATER FINAL SCRIPT 2026
QUESTIONS WITH ANSWERS GRADED A+
◉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.
◉What is the minimum useful size pipe to prime a centrifugal
pump? Answer: 1 inch
◉An anaerobic digester must maintain an average year round
temperature of Answer: 95 degrees F.
◉How do you remove shoring from a trench? Answer: From the
bottom up
◉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 RAS concentration and the clarifier sludge blanket
thickness
◉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 MCRT by wasting
more
* increase the F/M ratio by wasting more
◉The primary causes of wastewater stoppages are ________. Answer:
roots and grease
◉The inside diameter of a manhole must be how wide? Answer: 48
inches
◉On a construction job site, equipment booms must maintain at
least how many feet of clearance from overhead electric lines?
Answer: 10 feet
◉Digester gas should contain about ________. Answer: a. 65% - 75%
methane
QUESTIONS WITH ANSWERS GRADED A+
◉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.
◉What is the minimum useful size pipe to prime a centrifugal
pump? Answer: 1 inch
◉An anaerobic digester must maintain an average year round
temperature of Answer: 95 degrees F.
◉How do you remove shoring from a trench? Answer: From the
bottom up
◉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 RAS concentration and the clarifier sludge blanket
thickness
◉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 MCRT by wasting
more
* increase the F/M ratio by wasting more
◉The primary causes of wastewater stoppages are ________. Answer:
roots and grease
◉The inside diameter of a manhole must be how wide? Answer: 48
inches
◉On a construction job site, equipment booms must maintain at
least how many feet of clearance from overhead electric lines?
Answer: 10 feet
◉Digester gas should contain about ________. Answer: a. 65% - 75%
methane
