ADEQ Wastewater Treatment 1 Exam Questions
With Correct Answers
Reason |to |use |prechlorination |at |a |wastewater |treatment |facility?
a. |Decrease |TSS |load
b. |Begin |sterilization |process
c. |Inhibit |growth |of |odor-producing |bacteria
d. |Promote |settling |of |inorganic |materials |- |CORRECT |ANSWER✔✔-Inhibit |growth |of |odor-
producing |bacteria
The |electrical |current |draw |rate |is |measured |in?
a. |Volts
b. |Amps
c. |Ohms
d. |Watts |- |CORRECT |ANSWER✔✔-Amps
All |piping |connections |in |a |chlorine |gas |system |should |be |checked |for |leaks |by:
a. |Pressure |gauge
b. |Ammonia |vapors |near |connections
c. |Misting |water
d. |Looking |for |signs |of |corrosion |- |CORRECT |ANSWER✔✔-Ammonia |vapors |near |connections
Improper |use |or |lack |of |backflow |preventers |may |create:
a. |Increased |water |pressure
b. |Low |water |pressure
,c. |Contamination
d. |Fluctuating |water |pressure |- |CORRECT |ANSWER✔✔-Contamination
Tool |to |check |bearings |on |an |electrical |motor?
a. |Tachometer
b. |Stethoscope
c. |Vibration |meter
d. |Oscilloscope |- |CORRECT |ANSWER✔✔-Vibration |meter
Longest |life |seal |under |normal |conditions?
a. |Mechanical |seal
b. |Water |seal
c. |Packing |seal
d. |Gland |seal |- |CORRECT |ANSWER✔✔-Mechanical |seal
pH |test |with |an |electrode?
a. |Raise |temperature |to |40°C
b. |Lower |temperature |to |2°C
c. |Dechlorinate
d. |Maintain |constant |stirring |rate |- |CORRECT |ANSWER✔✔-Maintain |constant |stirring |rate
Dry |chemical |feeder: |2.65 |lbs |in |5 |minutes. |What |is |the |rate?
a. |13 |lbs/day
b. |763 |lbs/day
c. |3883 |lbs/day
d. |48,203 |lbs/day |- |CORRECT |ANSWER✔✔-763 |lbs/day
, Changing |oil |every |1000 |hours |is |what |type |of |maintenance?
a. |Preventative
b. |Reactive
c. |Run-to-failure
d. |Conditional |- |CORRECT |ANSWER✔✔-Preventative
Sludge |sample |test |for |MLSS?
a. |Remix
b. |Filter
c. |Allow |to |stand
d. |Acidity |- |CORRECT |ANSWER✔✔-Filter
Minimum |DO |level |test |time |on |a |facultative |lagoon?
a. |5 |am
b. |11 |am
c. |5 |pm
d. |11 |pm |- |CORRECT |ANSWER✔✔-5 |am
Which |form |of |solids |is |MOST |difficult |to |remove |in |a |gravity |treatment |process?
a. |Coagulant
b. |Precipitated
c. |Colloids |- |CORRECT |ANSWER✔✔-Colloids
A |greasy |scummy |layer |of |deep |tan |or |dark |brown |foam |on |an |aerator |tank |is |MOST |likely |due
|to:
With Correct Answers
Reason |to |use |prechlorination |at |a |wastewater |treatment |facility?
a. |Decrease |TSS |load
b. |Begin |sterilization |process
c. |Inhibit |growth |of |odor-producing |bacteria
d. |Promote |settling |of |inorganic |materials |- |CORRECT |ANSWER✔✔-Inhibit |growth |of |odor-
producing |bacteria
The |electrical |current |draw |rate |is |measured |in?
a. |Volts
b. |Amps
c. |Ohms
d. |Watts |- |CORRECT |ANSWER✔✔-Amps
All |piping |connections |in |a |chlorine |gas |system |should |be |checked |for |leaks |by:
a. |Pressure |gauge
b. |Ammonia |vapors |near |connections
c. |Misting |water
d. |Looking |for |signs |of |corrosion |- |CORRECT |ANSWER✔✔-Ammonia |vapors |near |connections
Improper |use |or |lack |of |backflow |preventers |may |create:
a. |Increased |water |pressure
b. |Low |water |pressure
,c. |Contamination
d. |Fluctuating |water |pressure |- |CORRECT |ANSWER✔✔-Contamination
Tool |to |check |bearings |on |an |electrical |motor?
a. |Tachometer
b. |Stethoscope
c. |Vibration |meter
d. |Oscilloscope |- |CORRECT |ANSWER✔✔-Vibration |meter
Longest |life |seal |under |normal |conditions?
a. |Mechanical |seal
b. |Water |seal
c. |Packing |seal
d. |Gland |seal |- |CORRECT |ANSWER✔✔-Mechanical |seal
pH |test |with |an |electrode?
a. |Raise |temperature |to |40°C
b. |Lower |temperature |to |2°C
c. |Dechlorinate
d. |Maintain |constant |stirring |rate |- |CORRECT |ANSWER✔✔-Maintain |constant |stirring |rate
Dry |chemical |feeder: |2.65 |lbs |in |5 |minutes. |What |is |the |rate?
a. |13 |lbs/day
b. |763 |lbs/day
c. |3883 |lbs/day
d. |48,203 |lbs/day |- |CORRECT |ANSWER✔✔-763 |lbs/day
, Changing |oil |every |1000 |hours |is |what |type |of |maintenance?
a. |Preventative
b. |Reactive
c. |Run-to-failure
d. |Conditional |- |CORRECT |ANSWER✔✔-Preventative
Sludge |sample |test |for |MLSS?
a. |Remix
b. |Filter
c. |Allow |to |stand
d. |Acidity |- |CORRECT |ANSWER✔✔-Filter
Minimum |DO |level |test |time |on |a |facultative |lagoon?
a. |5 |am
b. |11 |am
c. |5 |pm
d. |11 |pm |- |CORRECT |ANSWER✔✔-5 |am
Which |form |of |solids |is |MOST |difficult |to |remove |in |a |gravity |treatment |process?
a. |Coagulant
b. |Precipitated
c. |Colloids |- |CORRECT |ANSWER✔✔-Colloids
A |greasy |scummy |layer |of |deep |tan |or |dark |brown |foam |on |an |aerator |tank |is |MOST |likely |due
|to:
