1|Page
TEXAS WASTEWATER CLASS A TEST 2026/2027
EXAM 2 VERSIONS AND PRACTICE EXAM
QUESTIONS ACCURATE ACTUAL EXAM||VERIFIED
EXAM!!! FREQUENTLY TESTED QUESTIONS WITH
DETAILED ANSWERS | GUARANTEED PASS |
GRADED A+||NEWEST EXAM!!!!
What is the weir loading in gal linear ft/day? - Answers-
353.68 gallons & 5684.11
A primary clarifier has a flow of 3.0 MGD and has a
diameter of 100 feet. It is 12 feet deep and has 24 inches
of freeboard. What is the detention time in hours? -
Answers-4.7 hrs
Anaerobic digester gas should contain? - Answers-65-75%
methane, 25-35% carbon dioxide and 1-5% nitrogen.
An activated sludge plant has an average daily flow of 3.5
MG. The aeration tank capacity is 1.2 MG with a MLSS
concentration of 3200 mg/L. The clarifier has a capacity of
400,000 gallons with a MLSS concentration of 6,000 mg/L.
The wasting rate is 40,000 gallons per day with a MLSS
concentration of 8, 000 mg/L. The effluent TSS is 18 mg/L.
, 2|Page
Assuming volatile concentrations of 70%, what is the
MCRT and what type of activated sludge plant should this
be? - Answers-16.29 Days
What are some of the causes of filaments in the aeration
basin? - Answers-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? - Answers-Grey to brown 0.05 to
0.1 inches thick
What activated sludge process does not achieve complete
nitrification? - Answers-Contact Stabilization
In the selection of forced main wastewater piping, what is
the minimum working pressure? - Answers-150 psi
TEXAS WASTEWATER CLASS A TEST 2026/2027
EXAM 2 VERSIONS AND PRACTICE EXAM
QUESTIONS ACCURATE ACTUAL EXAM||VERIFIED
EXAM!!! FREQUENTLY TESTED QUESTIONS WITH
DETAILED ANSWERS | GUARANTEED PASS |
GRADED A+||NEWEST EXAM!!!!
What is the weir loading in gal linear ft/day? - Answers-
353.68 gallons & 5684.11
A primary clarifier has a flow of 3.0 MGD and has a
diameter of 100 feet. It is 12 feet deep and has 24 inches
of freeboard. What is the detention time in hours? -
Answers-4.7 hrs
Anaerobic digester gas should contain? - Answers-65-75%
methane, 25-35% carbon dioxide and 1-5% nitrogen.
An activated sludge plant has an average daily flow of 3.5
MG. The aeration tank capacity is 1.2 MG with a MLSS
concentration of 3200 mg/L. The clarifier has a capacity of
400,000 gallons with a MLSS concentration of 6,000 mg/L.
The wasting rate is 40,000 gallons per day with a MLSS
concentration of 8, 000 mg/L. The effluent TSS is 18 mg/L.
, 2|Page
Assuming volatile concentrations of 70%, what is the
MCRT and what type of activated sludge plant should this
be? - Answers-16.29 Days
What are some of the causes of filaments in the aeration
basin? - Answers-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? - Answers-Grey to brown 0.05 to
0.1 inches thick
What activated sludge process does not achieve complete
nitrification? - Answers-Contact Stabilization
In the selection of forced main wastewater piping, what is
the minimum working pressure? - Answers-150 psi
