WASTEWATER TREATMENT OPERATIONS
ACTUAL EXAM 2026 QUESTIONS WITH
ANSWERS 100% CORRECT
◉Series and Parallel Ponds . Answer: Different pond configurations for
wastewater treatment.
◉Grab Sample . Answer: Required for bacteria samples; BOD sampling
is usually composite.
◉Quartz Sleeve . Answer: Protects bulbs in UV systems.
◉UV Treatment . Answer: Kills or inactivates bugs by damaging
genetic material.
◉Ammonia Vapors . Answer: Used to test for chlorine or sulfur dioxide
leaks; white smoke indicates a leak.
◉Water Borne Diseases . Answer: Diseases transmitted through
contaminated water.
, ◉Chlorine Forms . Answer: Granular: calcium hypochlorite or HTH;
liquid: sodium hypochlorite or bleach.
◉Mixed Liquor . Answer: Should be chocolate brown with a musty
odor.
◉Motor and Pump Misalignment . Answer: Causes vibration, especially
when the pump is first turned on.
◉Respiration Rate Test . Answer: Best lab test for sludge in aerobic
digester.
◉Oxygen Uptake Load Ratio . Answer: A sharp drop indicates toxicity
entering the system.
◉Unknown Chemical Dumping . Answer: Take samples of incoming
raw sewage when notified of large chemical dumping.
◉Methane Gas Production . Answer: Decrease may be due to a shock
load of toxic material upsetting pH balance.
◉Oxidation Pond Levee . Answer: Inside slope should be 2:1.
ACTUAL EXAM 2026 QUESTIONS WITH
ANSWERS 100% CORRECT
◉Series and Parallel Ponds . Answer: Different pond configurations for
wastewater treatment.
◉Grab Sample . Answer: Required for bacteria samples; BOD sampling
is usually composite.
◉Quartz Sleeve . Answer: Protects bulbs in UV systems.
◉UV Treatment . Answer: Kills or inactivates bugs by damaging
genetic material.
◉Ammonia Vapors . Answer: Used to test for chlorine or sulfur dioxide
leaks; white smoke indicates a leak.
◉Water Borne Diseases . Answer: Diseases transmitted through
contaminated water.
, ◉Chlorine Forms . Answer: Granular: calcium hypochlorite or HTH;
liquid: sodium hypochlorite or bleach.
◉Mixed Liquor . Answer: Should be chocolate brown with a musty
odor.
◉Motor and Pump Misalignment . Answer: Causes vibration, especially
when the pump is first turned on.
◉Respiration Rate Test . Answer: Best lab test for sludge in aerobic
digester.
◉Oxygen Uptake Load Ratio . Answer: A sharp drop indicates toxicity
entering the system.
◉Unknown Chemical Dumping . Answer: Take samples of incoming
raw sewage when notified of large chemical dumping.
◉Methane Gas Production . Answer: Decrease may be due to a shock
load of toxic material upsetting pH balance.
◉Oxidation Pond Levee . Answer: Inside slope should be 2:1.
