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MA Wastewater Exam Prep Practice Exam TEST FINAL EXAM
AND PRACTICE EXAM 20262027 BANK 2 VERSIONS
QUESTIONS WITH DETAILED VERIFIED ANSWERS EXAM
QUESTIONS WILL COME FROM HERE (100% CORRECT
ANSWERS A+ GRADED
A 25,000 gallon waste storage tank should release the wastewater at
what rate to ensure a fairly uniform discharge during a 12 hour period?
- ANSWERS--35 gpm
A 30,000 gallon tank is full of dry chemical with a specific gravity of
1.35. What is the weight of the contents of the tank? - ANSWERS--
337,770 pounds
A chemical feed pump is set to deliver 75 gallons per day. What is the
feed rate in millimeters per minute? - ANSWERS--197 mL/min
A composite sample:
A. Requires an operator to take a grab sample
B. Is based on flow/time
C. Requires the approval of the pollution control agency
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D. Will never be reliable
E. Is necessary for all lab determinations - ANSWERS--B. Is based on
flow/time
A disadvantage of automatic composite samplers is:
A. Overall average characteristics of effluent can be recorded
B. They cannot record a specific event that released a high
concentration of toxic waste
C. They are easy to use
D. The samples are collected based on flow. - ANSWERS--B. They cannot
record a specific event that released a high concentration of toxic waste
A firm and dry cake indicates good filter press operation and, generally
speaking, no adjustments are necessary.
True or False? - ANSWERS--True
A jaw test can be used to determine:
A. The most economical coagulation dosages
B. The number of jars of chemicals
C. The pH of a sample
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D. The plant conditions by using laboratory equipment
E. What the clarity will probably be in the plant effluent - ANSWERS--A.
The most economical coagulation dosages
A jerky or inoperable sludge collector could be caused by:
A. Sludge blanket too deep
B. Short circuiting
C. A misaligned baffle
D. An effluent weir tilted.
E. Intoxicated operation. - ANSWERS--A. Sludge blanket too deep
A lockout procedure is:
A. Policy of locking the plant doors and punch in time to catch
stragglers.
B. A method for ensuring that no one tamper with the chlorine B kit
until necessary.
C. Policy for ensuring that electrical and mechanical equipment remains
de-energized during maintenance.
D. A procedure for controlling vandalism at the plant. - ANSWERS--C.
Policy for ensuring that electrical and mechanical equipment remains
de-energized during maintenance
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A major objection to the use of chemical precipitation processes to
treat industrial waste streams is the:
A. Corrosivity of the effluent
B. Inability to remove color
C. Quantity of sludge
D. Toxic chemicals in the effluent
E. Quality of sludge - ANSWERS--C. Quantity of sludge.
A Parshall Flume is generally used to:
A. Perform the COD test.
B. Perform the suspended solids test.
C. Measure flow.
D. None of these. - ANSWERS--C. Measure flow.
A pH recorder indicates 10.0 when a pH of 8.0 is desired. Adding acid
makes no difference. A portable pH meter indicates the pH is less than
10. Which item would you check first?
A. Sensor
B. Acid supply.
C. Acid feed pump.
MA Wastewater Exam Prep Practice Exam TEST FINAL EXAM
AND PRACTICE EXAM 20262027 BANK 2 VERSIONS
QUESTIONS WITH DETAILED VERIFIED ANSWERS EXAM
QUESTIONS WILL COME FROM HERE (100% CORRECT
ANSWERS A+ GRADED
A 25,000 gallon waste storage tank should release the wastewater at
what rate to ensure a fairly uniform discharge during a 12 hour period?
- ANSWERS--35 gpm
A 30,000 gallon tank is full of dry chemical with a specific gravity of
1.35. What is the weight of the contents of the tank? - ANSWERS--
337,770 pounds
A chemical feed pump is set to deliver 75 gallons per day. What is the
feed rate in millimeters per minute? - ANSWERS--197 mL/min
A composite sample:
A. Requires an operator to take a grab sample
B. Is based on flow/time
C. Requires the approval of the pollution control agency
,2|Page
D. Will never be reliable
E. Is necessary for all lab determinations - ANSWERS--B. Is based on
flow/time
A disadvantage of automatic composite samplers is:
A. Overall average characteristics of effluent can be recorded
B. They cannot record a specific event that released a high
concentration of toxic waste
C. They are easy to use
D. The samples are collected based on flow. - ANSWERS--B. They cannot
record a specific event that released a high concentration of toxic waste
A firm and dry cake indicates good filter press operation and, generally
speaking, no adjustments are necessary.
True or False? - ANSWERS--True
A jaw test can be used to determine:
A. The most economical coagulation dosages
B. The number of jars of chemicals
C. The pH of a sample
,3|Page
D. The plant conditions by using laboratory equipment
E. What the clarity will probably be in the plant effluent - ANSWERS--A.
The most economical coagulation dosages
A jerky or inoperable sludge collector could be caused by:
A. Sludge blanket too deep
B. Short circuiting
C. A misaligned baffle
D. An effluent weir tilted.
E. Intoxicated operation. - ANSWERS--A. Sludge blanket too deep
A lockout procedure is:
A. Policy of locking the plant doors and punch in time to catch
stragglers.
B. A method for ensuring that no one tamper with the chlorine B kit
until necessary.
C. Policy for ensuring that electrical and mechanical equipment remains
de-energized during maintenance.
D. A procedure for controlling vandalism at the plant. - ANSWERS--C.
Policy for ensuring that electrical and mechanical equipment remains
de-energized during maintenance
, 4|Page
A major objection to the use of chemical precipitation processes to
treat industrial waste streams is the:
A. Corrosivity of the effluent
B. Inability to remove color
C. Quantity of sludge
D. Toxic chemicals in the effluent
E. Quality of sludge - ANSWERS--C. Quantity of sludge.
A Parshall Flume is generally used to:
A. Perform the COD test.
B. Perform the suspended solids test.
C. Measure flow.
D. None of these. - ANSWERS--C. Measure flow.
A pH recorder indicates 10.0 when a pH of 8.0 is desired. Adding acid
makes no difference. A portable pH meter indicates the pH is less than
10. Which item would you check first?
A. Sensor
B. Acid supply.
C. Acid feed pump.
