REHS/RS Wastewater Treatment and Disposal Quiz
Chemical coagulation, flocculation, sedimentation, and d. all of the above
filtration remove
a.most bacteria
b.most viruses and protosoa
c. most helminths
d.all of the above
A young lake is considered to be c. oligotrophic
a.eutrophic
b. mesotrophic
c. oligotrophic
d. ohytotrophic
By USEPA Standards, the pH of secondary treatment d. 6 to 9
effluent shall be in the range of
a.5.5 to 7
b.5 to 7
c.7.5 to 10
d.6 to 9
What is the most common method of applying c. spray irrigation
wastewater to land?
a.waste stabilization pond
b.land over-land flow
c. spray irrigation
d.wetland treatment
, Low-pressure, vacuum and cluster system may be used d. all of the above
a.where soil is unsuitable for septic-tank systems
b.in hilly areas
c. in high-density recreational areas
d.all of the above
The examination of road cuts, stream embankments, b. False
and/or building excavations provides only marginal
information about soils due to oxidation.
a.True
b. False
Sludge accumulation in a tank serving a normal home has c. 18 to 21 gals. per person per year
been estimated at:
a.40 to 49 gals. per person per year
b.69 to 80 gals. per person per year
c. 18 to 21 gals. per person per year
d.2.2 gals. per person per year
Final disposal of sludge may include all of the following d. vegetable garden dumping
except
a.composting
b.sanitary landfill
c. land application
d.vegetable garden dumping
It is known that some common pathogenic organisms c. 2 years
found in wastewater will survive more than of
harsh
temperature extremes.
a.2 months
b.5 months
c. 2 years
d.5 years
The top of the absorption field gravel should be covered b. permeable material
with:
a.tar paper
b.permeable material
c. plastic
d.treated paper
Loam is a mixture of gravel, sand, silt, and clay containing c. decayed plant and animal matter
what?
a.highly toxic metals
b.potassium and ammonium
c. decayed plant and animal matter
d. dirt
Chemical coagulation, flocculation, sedimentation, and d. all of the above
filtration remove
a.most bacteria
b.most viruses and protosoa
c. most helminths
d.all of the above
A young lake is considered to be c. oligotrophic
a.eutrophic
b. mesotrophic
c. oligotrophic
d. ohytotrophic
By USEPA Standards, the pH of secondary treatment d. 6 to 9
effluent shall be in the range of
a.5.5 to 7
b.5 to 7
c.7.5 to 10
d.6 to 9
What is the most common method of applying c. spray irrigation
wastewater to land?
a.waste stabilization pond
b.land over-land flow
c. spray irrigation
d.wetland treatment
, Low-pressure, vacuum and cluster system may be used d. all of the above
a.where soil is unsuitable for septic-tank systems
b.in hilly areas
c. in high-density recreational areas
d.all of the above
The examination of road cuts, stream embankments, b. False
and/or building excavations provides only marginal
information about soils due to oxidation.
a.True
b. False
Sludge accumulation in a tank serving a normal home has c. 18 to 21 gals. per person per year
been estimated at:
a.40 to 49 gals. per person per year
b.69 to 80 gals. per person per year
c. 18 to 21 gals. per person per year
d.2.2 gals. per person per year
Final disposal of sludge may include all of the following d. vegetable garden dumping
except
a.composting
b.sanitary landfill
c. land application
d.vegetable garden dumping
It is known that some common pathogenic organisms c. 2 years
found in wastewater will survive more than of
harsh
temperature extremes.
a.2 months
b.5 months
c. 2 years
d.5 years
The top of the absorption field gravel should be covered b. permeable material
with:
a.tar paper
b.permeable material
c. plastic
d.treated paper
Loam is a mixture of gravel, sand, silt, and clay containing c. decayed plant and animal matter
what?
a.highly toxic metals
b.potassium and ammonium
c. decayed plant and animal matter
d. dirt
