TEXAS WASTEWATER COMPREHENSIVE
REVIEW 2026 QUESTIONS WITH ANSWERS
GRADED A+
◉When is blue-green algae the most dominant on a pond treatment
system?. Answer: Summer
◉What is the purpose of biomonitoring of a plant's effluent?.
Answer: d. Test for toxicity
◉Technology The management function of selecting and training
employees of an organization is called. Answer: staffing
◉e. controlling When must TCEQ be notified about expansions of a
treatment facility?. Answer: Before construction
◉In an anaerobic digester, the percentage of methane and carbon
dioxide gas content should be. Answer: b. 70% methane, 30%
carbon dioxide
◉The temperature of an anaerobic digester should be maintained at
a minimum of. Answer: 95° F
,◉13. What type of wastewater treatment operates in the
endogenous bacteria growth phase?. Answer: Extended air
◉Why is recirculation needed in a trickling filter?. Answer: a. Keep
the media wet b. Further reduce BOD c. Flood the filter to control
ponding and filter flies
◉15. What type of fire extinguisher would be used on an electrical
control panel that has been de-energized?. Answer: f. a class a and d
class c
◉Disinfection with chlorine is the most effective at a pH of. Answer:
6.0
◉17. The biomass on a normal functioning RBC has what
appearance?. Answer: Grey to brown and 0.05 to 0.1 inch thick
◉The sludge from a primary clarifier should contain what percent
solids?. Answer: b. 4% to 6%
◉What is eutrophication in a pond system?. Answer: Enrichment
with nitrogen and phosphorous Causes algae blooms
, ◉20. A wastewater stabilization pond has 130,680 sq. ft. It has a
three to one slope on the embankment and has an average depth of
5 ft. Approximately how many people will this pond provide
wastewater treatment for? 130,680 sq ft = 3 acres x 35 lbs / BOD/
acre = 105 lbs BOD =618 0.17 lbs BOD/ person 43,560 sq ft l acre.
Answer: d. 600
◉A"Racetrack" is what type of Activate Sludge treatment?. Answer:
Extended air
◉Which form of activated sludge must have primary clarifiers?.
Answer: Conventional
◉What is the relationship between F/M ratio and MCRT?. Answer:
Indirect; if one goes up, the other goes down
◉Which activated sludge process does not achieve complete
nitrification?. Answer: Contact stabilization
◉Which form of activated sludge does the better job of handling
shock or toxic loads?. Answer: Complete mix
◉Which of activated sludge has two aeration basins per single
treatment unit?. Answer: Contact stabilization
REVIEW 2026 QUESTIONS WITH ANSWERS
GRADED A+
◉When is blue-green algae the most dominant on a pond treatment
system?. Answer: Summer
◉What is the purpose of biomonitoring of a plant's effluent?.
Answer: d. Test for toxicity
◉Technology The management function of selecting and training
employees of an organization is called. Answer: staffing
◉e. controlling When must TCEQ be notified about expansions of a
treatment facility?. Answer: Before construction
◉In an anaerobic digester, the percentage of methane and carbon
dioxide gas content should be. Answer: b. 70% methane, 30%
carbon dioxide
◉The temperature of an anaerobic digester should be maintained at
a minimum of. Answer: 95° F
,◉13. What type of wastewater treatment operates in the
endogenous bacteria growth phase?. Answer: Extended air
◉Why is recirculation needed in a trickling filter?. Answer: a. Keep
the media wet b. Further reduce BOD c. Flood the filter to control
ponding and filter flies
◉15. What type of fire extinguisher would be used on an electrical
control panel that has been de-energized?. Answer: f. a class a and d
class c
◉Disinfection with chlorine is the most effective at a pH of. Answer:
6.0
◉17. The biomass on a normal functioning RBC has what
appearance?. Answer: Grey to brown and 0.05 to 0.1 inch thick
◉The sludge from a primary clarifier should contain what percent
solids?. Answer: b. 4% to 6%
◉What is eutrophication in a pond system?. Answer: Enrichment
with nitrogen and phosphorous Causes algae blooms
, ◉20. A wastewater stabilization pond has 130,680 sq. ft. It has a
three to one slope on the embankment and has an average depth of
5 ft. Approximately how many people will this pond provide
wastewater treatment for? 130,680 sq ft = 3 acres x 35 lbs / BOD/
acre = 105 lbs BOD =618 0.17 lbs BOD/ person 43,560 sq ft l acre.
Answer: d. 600
◉A"Racetrack" is what type of Activate Sludge treatment?. Answer:
Extended air
◉Which form of activated sludge must have primary clarifiers?.
Answer: Conventional
◉What is the relationship between F/M ratio and MCRT?. Answer:
Indirect; if one goes up, the other goes down
◉Which activated sludge process does not achieve complete
nitrification?. Answer: Contact stabilization
◉Which form of activated sludge does the better job of handling
shock or toxic loads?. Answer: Complete mix
◉Which of activated sludge has two aeration basins per single
treatment unit?. Answer: Contact stabilization
