Wastewater Treatment Certification Exam
ACTUAL QUESTIONS AND CORRECT
ANSWERS
V-notch weirs - Correct answers✔Measure flow rate in primary effluent launder.
Preliminary treatment - Correct answers✔Protects equipment from plugging, wearing, or
damage.
PPM & mg/L - Correct answers✔Equivalent units for wastewater calculations.
Parshall flume - Correct answers✔Found in headworks area of a wastewater plant.
Launder - Correct answers✔Trough conveying flow in primary clarifier.
Industrial wastewater system - Correct answers✔Separate system in most treatment plants.
Rotameter - Correct answers✔Measures chlorine feed rate in pounds per million gallons.
F to M ratio - Correct answers✔Key in activated sludge plant operation.
Organic loading - Correct answers✔Pounds of BOD per day per 1000 cubic feet.
pH change - Correct answers✔Early warning sign in anaerobic digester.
, Acre wastewater pond - Correct answers✔Holds around 1 million gallons at 3ft depth.
Grab sample - Correct answers✔Used interchangeably with composite sample.
Volatile acid concentration - Correct answers✔Important for monitoring anaerobic digester.
Photosynthesis - Correct answers✔Integral to biological activity in wastewater pond.
Grit chamber - Correct answers✔Yields high fixed solids and low volatile solids grit.
Comminutors - Correct answers✔Cut and shred large objects in raw wastewater.
MCRT - Correct answers✔Average days an organism spends in activated sludge.
Scum removal - Correct answers✔Critical for success in primary treatment.
Dissolved oxygen - Correct answers✔Lowest in facultative pond before sunrise.
Sludge blanket levels - Correct answers✔Used to adjust sludge pumping rates.
Uneven weirs - Correct answers✔May cause short circuiting in primary clarifier.
Primary effluent - Correct answers✔Wastewater flowing into aeration tank.
ACTUAL QUESTIONS AND CORRECT
ANSWERS
V-notch weirs - Correct answers✔Measure flow rate in primary effluent launder.
Preliminary treatment - Correct answers✔Protects equipment from plugging, wearing, or
damage.
PPM & mg/L - Correct answers✔Equivalent units for wastewater calculations.
Parshall flume - Correct answers✔Found in headworks area of a wastewater plant.
Launder - Correct answers✔Trough conveying flow in primary clarifier.
Industrial wastewater system - Correct answers✔Separate system in most treatment plants.
Rotameter - Correct answers✔Measures chlorine feed rate in pounds per million gallons.
F to M ratio - Correct answers✔Key in activated sludge plant operation.
Organic loading - Correct answers✔Pounds of BOD per day per 1000 cubic feet.
pH change - Correct answers✔Early warning sign in anaerobic digester.
, Acre wastewater pond - Correct answers✔Holds around 1 million gallons at 3ft depth.
Grab sample - Correct answers✔Used interchangeably with composite sample.
Volatile acid concentration - Correct answers✔Important for monitoring anaerobic digester.
Photosynthesis - Correct answers✔Integral to biological activity in wastewater pond.
Grit chamber - Correct answers✔Yields high fixed solids and low volatile solids grit.
Comminutors - Correct answers✔Cut and shred large objects in raw wastewater.
MCRT - Correct answers✔Average days an organism spends in activated sludge.
Scum removal - Correct answers✔Critical for success in primary treatment.
Dissolved oxygen - Correct answers✔Lowest in facultative pond before sunrise.
Sludge blanket levels - Correct answers✔Used to adjust sludge pumping rates.
Uneven weirs - Correct answers✔May cause short circuiting in primary clarifier.
Primary effluent - Correct answers✔Wastewater flowing into aeration tank.
