WASTEWATER GRADE 1 EXAMINATION QUESTIONS THAT HAVE SIMPLIFIED ANSWERS

WASTEWATER GRADE 1 EXAMINATION QUESTIONS THAT HAVE SIMPLIFIED ANSWERS
What is the methane content in a properly operating anaerobic digester?
65 to 70% by volume
What will the addition of chlorine gas do to the pH of wastewater?
Decrease the pH
What is the purpose of a Parshall flume?
Measure Flowrate
What is the typical removal efficiency of settable solids in a primary clarifier?
95 to 99%
Pumping scum from a primary clarifier can cause more piping problems than other
substances pumped at a wastewater treatment plant?
TRUE.
What might cause thick billows of white sudsy foam in the aeration tank?
MLSS is too low
What does the "M" in F/M ratio represent?
The mixed liquor volatile suspended solids in the aeration tank.
In general, how will warmer temperature affect the settling rate of solids in a clarifier?
It increases the settling rate
What could happen if the digester gas is mixed with air (85 to 95% by volume)?
Cause an explosion
How will algae impact the chlorine demand in the pond effluent?
It increase the chlorine demand
TRUE OR FALSE: A positive displacement pump must NEVER be started with the
discharge valve closed.
TRUE
TRUE OR FALSE: The volume of a secondary clarifier is not needed to determine the
F/M ratio?
TRUE
Which of the following is one of the basic rules of lab work?
a. Do not leave keys in equipment or vehicles at any time.
b. Patrol the facilities frequently, and look for suspicious activity or behavior.
c. Never Pipet hazardous material with your mouth, even if the pipet has been sterilized.
d. Lock Out and Tag out relevant mechanical and electrical equipment before staring
any maintenance activity.
C
What is the recirculation ration for a trickling filter?
A. Qr/Q
B. Q/Qr
C. Q/Qr+Q
D.Qr+Q/Q
A
Which of the following is true about COD and BOD?
A. They are direct measurements of organic content in the influent.
B. They measure the inorganic content of the influent
C. They represent the amount of filamentous bacteria in the influent
D. They are indirect measurements of the organic content in the influent.
D
What is the purpose of the grit channel?
A. Remove dissolved and non-settable organics
B. Remove heavy inorganic wastes
C. To allow activated sludge to settle
D. Remove substances that float and readily settle from the wastewater as primary
treatment.
B
Which of the following is true about the extended aeration process?
A. Bugs get more food
B. Wasting is not necessary
C. It does not produce as much waste sludge as the other process
D. It is very different from the conventional activated sludge process.
C
What is the correct formula for solids in wastewater?
A. Non-volatile solids +Suspended solids = Total solids in the influent
B. Dissolved Solids + Settable Solids = Total Suspended Solids
C. Colloids + Dissolved Solids = Total Suspended Solids
D. Non-settable solids + Settable Solids = Total Suspended solids
D
What is "freeboard" in a waste stabilization pond?
A. Operational depth of a pond
B. Wooden inlet and outlet structures.
C. Wooden baffles
D. Vertical Distance from the normal water surface to the top of the levee.
D
What is one of the requirements for the BOD test?
A. The BOD bottle should be completely filled to the top.
B. The BOD bottles must be 100-ml in size.
C. Samples should be incubated at 30 degrees Celsius.
D. Stoppers should not be installed on the bottles to ensure proper air flow to the
samples.
A
What should be scheduled every 3 months for a flamer arrester in an anaerobic
digester?
A. Replacement
B. Maintenance
C. Flow Test
D. Temperature Test
B
What is common practice in an activated sludge process?
A. Waste all activated sludge
B. Sludge age at 14 days for conventional system
C. Recirculate activated sludge
D. Limiting DO to increase microorganism population

WASTEWATER GRADE 1 EXAMINATION Exam,WASTEWATER GRADE 1 EXAMINATION Test,WASTEWATER GRADE 1 EXAMINATION Flashcard,WASTEWATER GRADE 1 EXAMINATION quiz,WASTEWATER GRADE 1 EXAMINATION Practice,WASTEWATER GRADE 1 EXAMINATION Practice test,WASTEWATER GRADE 1 EXAMINATION Practice flashcard,WASTEWATER GRADE 1 EXAMINATION Practice exam,WASTEWATER GRADE 1 EXAMINATION Study guide,WASTEWATER GRADE 1 EXAMINATION Practice questions,WASTEWATER GRADE 1 EXAMINATION Questions,WASTEWATER GRADE 1 EXAMINATION Practice questions and answers,WASTEWATER GRADE 1 EXAMINATION Questions and answers,WASTEWATER GRADE 1 EXAMINATION pdf,WASTEWATER GRADE 1 EXAMINATION quizlet,WASTEWATER GRADE 1 EXAMINATION reddit,WASTEWATER GRADE 1 EXAMINATION Answer sheet,WASTEWATER GRADE 1 EXAMINATION Answer key,WASTEWATER GRADE 1 EXAMINATION Pdf free,WASTEWATER GRADE 1 EXAMINATION Exam help,WASTEWATER GRADE 1 EXAMINATION Cheat sheet,WASTEWATER GRADE 1 EXAMINATION quiz bank,WASTEWATER GRADE 1 EXAMINATION Questions bank,WASTEWATER GRADE 1 EXAMINATION Practice Guide,WASTEWATER GRADE 1 EXAMINATION Guide,WASTEWATER GRADE 1 EXAMINATION Testbank,WASTEWATER GRADE 1 EXAMINATION Practice Answers,WASTEWATER GRADE 1 EXAMINATION Answers,WASTEWATER GRADE 1 EXAMINATION Exam prep,WASTEWATER GRADE 1 EXAMINATION Prep,WASTEWATER GRADE 1 EXAMINATION Pdf download,WASTEWATER GRADE 1 EXAMINATION Flashcards,WASTEWATER GRADE 1 EXAMINATION Real questions,WASTEWATER GRADE 1 EXAMINATION Actual questions,WASTEWATER GRADE 1 EXAMINATION Real Questions and answers,WASTEWATER GRADE 1 EXAMINATION Actual Questions and answers,WASTEWATER GRADE 1 EXAMINATION Exam review,WASTEWATER GRADE 1 EXAMINATION Review,WASTEWATER GRADE 1 EXAMINATION Exam questions,WASTEWATER GRADE 1 EXAMINATION Exam questions and answers,WASTEWATER GRADE 1 EXAMINATION Practice test pdf,WASTEWATER GRADE 1 EXAMINATION Practice test quizlet,WASTEWATER GRADE 1 EXAMINATION Practice test Reddit,WASTEWATER GRADE 1 EXAMINATION Practice test quizlet multiple choice,WASTEWATER GRADE 1 EXAMINATION Exam study guide,WASTEWATER GRADE 1 EXAMINATION Practice test free,WASTEWATER GRADE 1 EXAMINATION Test questions,WASTEWATER GRADE 1 EXAMINATION Exam study guide,WASTEWATER GRADE 1 EXAMINATION Practice exam free,WASTEWATER GRADE 1 EXAMINATION Practice tests free,WASTEWATER GRADE 1 EXAMINATION Exam practice test,WASTEWATER GRADE 1 EXAMINATION Exam test questions,WASTEWATER GRADE 1 EXAMINATION Exam questions and answers,WASTEWATER GRADE 1 EXAMINATION Exam practice test