Ca Grade 2 Wastewater Treatment
Operator Practice Exam 4 Already
Passed
1 mg/l is the same as 1 part per billion ✔✔F
A scada system is capable of monitoring and controlling equipment from where? ✔✔remote
location
A Discharge Monitoring Report is typically submitted to the regulatory agency on daily basis
✔✔False = Monthly
A mechanical seal is used to prevent leaks between where? ✔✔between the pump casing and
shaft
Alkalinity is the capacity of a liquid to neutralize base ✔✔False = Alkalinity neutralizes acids
Typical mixed liquor suspended solids concentration is? ✔✔1,000 to 4,500 mg/l
, Turbidity is caused by... ✔✔suspended matters
Algae is not essential to the successful operation of both aerobic and facultative ponds ✔✔False
= Algae supply most of the oxygen to the supernattant
The addition of acid and CO2 will do what to wastewater? ✔✔lower the pH of wastewater
Hydrogen sulfide will deteriorate what kind of structures? ✔✔concrete structures
The higher the pH, the better the disinfection ✔✔False =
Maintain a dissolved oxygen concentration of 12 to 14 mg/l in the aeration tank ✔✔F
What happens when the velocity of the wastewater in a clarifier is greater in some sections than
others? ✔✔short circuiting
The F/M ratio will decrease when the microorganism population____________in the aeration
tank? ✔✔increases
Operator Practice Exam 4 Already
Passed
1 mg/l is the same as 1 part per billion ✔✔F
A scada system is capable of monitoring and controlling equipment from where? ✔✔remote
location
A Discharge Monitoring Report is typically submitted to the regulatory agency on daily basis
✔✔False = Monthly
A mechanical seal is used to prevent leaks between where? ✔✔between the pump casing and
shaft
Alkalinity is the capacity of a liquid to neutralize base ✔✔False = Alkalinity neutralizes acids
Typical mixed liquor suspended solids concentration is? ✔✔1,000 to 4,500 mg/l
, Turbidity is caused by... ✔✔suspended matters
Algae is not essential to the successful operation of both aerobic and facultative ponds ✔✔False
= Algae supply most of the oxygen to the supernattant
The addition of acid and CO2 will do what to wastewater? ✔✔lower the pH of wastewater
Hydrogen sulfide will deteriorate what kind of structures? ✔✔concrete structures
The higher the pH, the better the disinfection ✔✔False =
Maintain a dissolved oxygen concentration of 12 to 14 mg/l in the aeration tank ✔✔F
What happens when the velocity of the wastewater in a clarifier is greater in some sections than
others? ✔✔short circuiting
The F/M ratio will decrease when the microorganism population____________in the aeration
tank? ✔✔increases
