Waste Water Operator Lv 1 Exam Prep
Questions With Correct Answers
In |the |activated |sludge |process, |some |of |the |activated |sludge |must |be |wasted |to...
A. |Prevent |excessive |solid |buildup
B. |Prevent |clogging |of |the |sludge |return |line
C. |Prevent |overloading |of |sludge |return |pumps
D. |Increase |digester |gas |production |- |CORRECT |ANSWER✔✔-A. |Prevent |excessive |solid |buildup
The |best |operating |strategy |for |feeding |primary |sludge |to |an |anaerobic |digester |is |to |feed...
A. |Several |time |a |day
B. |Large |quantities |once |or |twice |a |day
C. |Once |a |day
D. |When |the |volatile |solids |drop |below |60% |- |CORRECT |ANSWER✔✔-A. |Several |time |a |day
Why |is |scum |skimmed |from |the |liquid |surface |of |a |primary |settling |tank?
A. |To |reduce |load |on |the |digester
B. |To |eliminate |interference |with |sludge |removal
C. |To |allow |aeration |of |the |tank |contents
D. |To |reduce |odor |and |insect |nuisance |- |CORRECT |ANSWER✔✔-B. |To |eliminate |interference |
with |sludge |removal
, Which |of |the |following |test |would |give |the |fastest |indication |of |toxicity |in |an |activated |sludge |
process?
A. |Oxygen |Uptake |Rate |(OUR)
B. |Settleometer
C. |MLSS
D. |Microscopic |Observation |- |CORRECT |ANSWER✔✔-A. |Oxygen |Uptake |Rate |(OUR)
Filamentous |bulking |of |activated |sludge |may |be |controlled |temporarily |by...
A. |Adding |sodium |chloride |to |the |aeration |tank
B. |Spraying |water |on |the |aeration |tank |surface
C. |Carefully |chlorinating |the |return |sludge |and |mixed |liquor
D. |Aerating |the |final |settling |tank |- |CORRECT |ANSWER✔✔-C. |Carefully |chlorinating |the |return |
sludge |and |mixed |liquor
Since |reaction |rates |are |lower |during |the |winter, |the |operator |of |an |activated |sludge |plant |will
|usually...
A. |Increase |dissolved |oxygen |levels
B. |Decrease |MCRT
C. |Decrease |wasting
D. |Increase |MCRT |- |CORRECT |ANSWER✔✔-D. |Increase |MCRT
In |a |healthy |activated |sludge |process |which |of |the |following |organisms |will |most |likely |be |
found |in |the |greatest |numbers?
Questions With Correct Answers
In |the |activated |sludge |process, |some |of |the |activated |sludge |must |be |wasted |to...
A. |Prevent |excessive |solid |buildup
B. |Prevent |clogging |of |the |sludge |return |line
C. |Prevent |overloading |of |sludge |return |pumps
D. |Increase |digester |gas |production |- |CORRECT |ANSWER✔✔-A. |Prevent |excessive |solid |buildup
The |best |operating |strategy |for |feeding |primary |sludge |to |an |anaerobic |digester |is |to |feed...
A. |Several |time |a |day
B. |Large |quantities |once |or |twice |a |day
C. |Once |a |day
D. |When |the |volatile |solids |drop |below |60% |- |CORRECT |ANSWER✔✔-A. |Several |time |a |day
Why |is |scum |skimmed |from |the |liquid |surface |of |a |primary |settling |tank?
A. |To |reduce |load |on |the |digester
B. |To |eliminate |interference |with |sludge |removal
C. |To |allow |aeration |of |the |tank |contents
D. |To |reduce |odor |and |insect |nuisance |- |CORRECT |ANSWER✔✔-B. |To |eliminate |interference |
with |sludge |removal
, Which |of |the |following |test |would |give |the |fastest |indication |of |toxicity |in |an |activated |sludge |
process?
A. |Oxygen |Uptake |Rate |(OUR)
B. |Settleometer
C. |MLSS
D. |Microscopic |Observation |- |CORRECT |ANSWER✔✔-A. |Oxygen |Uptake |Rate |(OUR)
Filamentous |bulking |of |activated |sludge |may |be |controlled |temporarily |by...
A. |Adding |sodium |chloride |to |the |aeration |tank
B. |Spraying |water |on |the |aeration |tank |surface
C. |Carefully |chlorinating |the |return |sludge |and |mixed |liquor
D. |Aerating |the |final |settling |tank |- |CORRECT |ANSWER✔✔-C. |Carefully |chlorinating |the |return |
sludge |and |mixed |liquor
Since |reaction |rates |are |lower |during |the |winter, |the |operator |of |an |activated |sludge |plant |will
|usually...
A. |Increase |dissolved |oxygen |levels
B. |Decrease |MCRT
C. |Decrease |wasting
D. |Increase |MCRT |- |CORRECT |ANSWER✔✔-D. |Increase |MCRT
In |a |healthy |activated |sludge |process |which |of |the |following |organisms |will |most |likely |be |
found |in |the |greatest |numbers?
