Wastewater Operator certification Study
Guide-Grade 2 Exam Questions With
Correct Answers
General |Wastewater |Treatment:
What |is |the |pressure |head |caused |by? |- |CORRECT |ANSWER✔✔-Water |elevation
General |Wastewater |Treatment:
What |color |should |the |piping |be |that |contains |reclaimed |water? |- |CORRECT |ANSWER✔✔-
purple
General |Wastewater |Treatment:
What |is |the |term |for |the |height |to |which |a |column |of |water |will |rise |in |a |well. |- |CORRECT |
ANSWER✔✔-piezometric |surface
General |Wastewater |Treatment:
In |general, |what |is |the |maximum |practical |lift |of |pumps |- |CORRECT |ANSWER✔✔-15-25ft
General |Wastewater |Treatment:
,Which |one |of |the |following |valves |is |the |best |to |use |in |throttling |a |flow |situation?
a. |gate
b. |butterfly
c. |globe
d. |ball |- |CORRECT |ANSWER✔✔-globe
General |Wastewater |Treatment:
Which |one |of |the |following |devices |is |used |to |measure |water |depths |in |storage |facilities?
a. |transducer
b. |Venturi |meter
c. |magnetic |sensor
d. |thermistor |- |CORRECT |ANSWER✔✔-transducer
Wastewater |Treatment |Facilities:
The |velocity |in |sanitary |sewers |is |approximately: |- |CORRECT |ANSWER✔✔-2 |ft/s
Wastewater |Treatment |Facilities:
The |distance |between |manholes |ranges |from |- |CORRECT |ANSWER✔✔-300-500ft
Wastewater |Treatment |Facilities:
What |should |the |flow |velocity |be |through |a |grit |channel |- |CORRECT |ANSWER✔✔-1.0 |ft/s
,Wastewater |Treatment |Facilities:
Grit |washers |are |used |to______
a. |remove |some |of |the |organic |matter
b. |remove |large |pieces |of |wood
c. |remove |rags |and |eggshells
d. |remove |the |odors |- |CORRECT |ANSWER✔✔-remove |some |of |the |organic |matter
Wastewater |Treatment |Facilities:
The |most |common |flow-measure |device |for |wastewater |is |a_____ |- |CORRECT |ANSWER✔✔-
parshall |flume
Wastewater |Treatment |Facilities:
The |detention |time |for |primary |clarifiers |usually |has |a |range |of_____hr/s |- |CORRECT |
ANSWER✔✔-1.5-2hr
Wastewater |Treatment |Facilities:
The |effluent |from |which |process |is |called |mixed |liquor
a.secondary |clarification
b. |primary |clarification
c. |sludge |drying |bed |or |pond
, d. |activated |sludge |- |CORRECT |ANSWER✔✔-activated |sludge
Wastewater |Treatment |Facilities:
Aerobic |ponds |usually |range |in |depth |from |___-____ft |- |CORRECT |ANSWER✔✔-3-6ft
Wastewater |Treatment |Facilities:
Anaerobic |ponds |usually |range |in |depth |from___-___ft |- |CORRECT |ANSWER✔✔-8-12ft
Wastewater |Treatment |Facilities:
Another |name |for |a |waste |stabilization |pond |is |- |CORRECT |ANSWER✔✔-raw |wastewater |
lagoon
Wastewater |sources |& |characteristics:
Typically |what |average |percent |of |total |solids |in |a |domestic |wastewater, |both |dissolved |and |
suspended, |are |inorganics |- |CORRECT |ANSWER✔✔-50%
Wastewater |sources |& |characteristics:
Typically, |what |average |percent |of |total |solids |in |domestic |wastewater, |both |dissolved |and |
suspended, |are |inorganics? |- |CORRECT |ANSWER✔✔-50%
Wastewater |sources |& |characteristics:
Guide-Grade 2 Exam Questions With
Correct Answers
General |Wastewater |Treatment:
What |is |the |pressure |head |caused |by? |- |CORRECT |ANSWER✔✔-Water |elevation
General |Wastewater |Treatment:
What |color |should |the |piping |be |that |contains |reclaimed |water? |- |CORRECT |ANSWER✔✔-
purple
General |Wastewater |Treatment:
What |is |the |term |for |the |height |to |which |a |column |of |water |will |rise |in |a |well. |- |CORRECT |
ANSWER✔✔-piezometric |surface
General |Wastewater |Treatment:
In |general, |what |is |the |maximum |practical |lift |of |pumps |- |CORRECT |ANSWER✔✔-15-25ft
General |Wastewater |Treatment:
,Which |one |of |the |following |valves |is |the |best |to |use |in |throttling |a |flow |situation?
a. |gate
b. |butterfly
c. |globe
d. |ball |- |CORRECT |ANSWER✔✔-globe
General |Wastewater |Treatment:
Which |one |of |the |following |devices |is |used |to |measure |water |depths |in |storage |facilities?
a. |transducer
b. |Venturi |meter
c. |magnetic |sensor
d. |thermistor |- |CORRECT |ANSWER✔✔-transducer
Wastewater |Treatment |Facilities:
The |velocity |in |sanitary |sewers |is |approximately: |- |CORRECT |ANSWER✔✔-2 |ft/s
Wastewater |Treatment |Facilities:
The |distance |between |manholes |ranges |from |- |CORRECT |ANSWER✔✔-300-500ft
Wastewater |Treatment |Facilities:
What |should |the |flow |velocity |be |through |a |grit |channel |- |CORRECT |ANSWER✔✔-1.0 |ft/s
,Wastewater |Treatment |Facilities:
Grit |washers |are |used |to______
a. |remove |some |of |the |organic |matter
b. |remove |large |pieces |of |wood
c. |remove |rags |and |eggshells
d. |remove |the |odors |- |CORRECT |ANSWER✔✔-remove |some |of |the |organic |matter
Wastewater |Treatment |Facilities:
The |most |common |flow-measure |device |for |wastewater |is |a_____ |- |CORRECT |ANSWER✔✔-
parshall |flume
Wastewater |Treatment |Facilities:
The |detention |time |for |primary |clarifiers |usually |has |a |range |of_____hr/s |- |CORRECT |
ANSWER✔✔-1.5-2hr
Wastewater |Treatment |Facilities:
The |effluent |from |which |process |is |called |mixed |liquor
a.secondary |clarification
b. |primary |clarification
c. |sludge |drying |bed |or |pond
, d. |activated |sludge |- |CORRECT |ANSWER✔✔-activated |sludge
Wastewater |Treatment |Facilities:
Aerobic |ponds |usually |range |in |depth |from |___-____ft |- |CORRECT |ANSWER✔✔-3-6ft
Wastewater |Treatment |Facilities:
Anaerobic |ponds |usually |range |in |depth |from___-___ft |- |CORRECT |ANSWER✔✔-8-12ft
Wastewater |Treatment |Facilities:
Another |name |for |a |waste |stabilization |pond |is |- |CORRECT |ANSWER✔✔-raw |wastewater |
lagoon
Wastewater |sources |& |characteristics:
Typically |what |average |percent |of |total |solids |in |a |domestic |wastewater, |both |dissolved |and |
suspended, |are |inorganics |- |CORRECT |ANSWER✔✔-50%
Wastewater |sources |& |characteristics:
Typically, |what |average |percent |of |total |solids |in |domestic |wastewater, |both |dissolved |and |
suspended, |are |inorganics? |- |CORRECT |ANSWER✔✔-50%
Wastewater |sources |& |characteristics:
