Wastewater Class B Texas Test with Verified Answers
1. The name of the State Agency Texas Commission of Environmental
responsible for enforcing pollu- Quality
tion control laws in Texas
2. The term pathogenic means Capable of causing disease
3. The minimum separation be- 9 feet
tween sewer lines and potable
water lines is
4. A licensed wastewater operator consistently does best job possible, prac-
is a professional tices personal safety, strives to improve
job knowledge, strives to keep the plant
and collection system in the best appear-
ance and working order
5. An important step in testing Filtering a sample
a sample for Total Suspended
Solids is
6. The Biochemical oxygen De- Measuring the dissolved oxygen (DO)
mand (BOD) of a sample is used
based on
7. The results of Biochemical Oxy- How the plant was operating 5 days ago
gen Demand (BOD) sample tak-
en at a treatment plant tells the
operator
8. Which of the following are dan- Natural gas, gasoline fumes, hydrogen
gerous gasses that are likely to sulfide and carbon dioxide
be present in lift stations and
manholes?
9. A preferred hydraulic method of Hydro Jet Cleaner
cleaning sewer lines is
10. Ways to reduce bad odors com- routinely cleaning slow running or low flow
ing from a collection system lines, adding chlorine or hydrogen perox-
ide to the collection system
, Wastewater Class B Texas Test with Verified Answers
11. Types of pipe that are common- ductile iron, Poly Vinyl Chloride (PVC)
ly used in wastewater collection
system
12. Before entering a confined Use approved monitoring device and
space a worker should check for the presence of dangerous
gasses, ventilate the space with a blower,
wear a safety harness and attach a life line
13. A properly designed and op- 30-40%
erated primary sedimentation
tank should remove per-
cent of incoming BOD
14. Devices that may be used to de- air bubbler, floats, electrodes, Acoustic
termine the level of sewage in a (sonic)
lift station
15. What is the most important role decompose organic matter
of aerobic bacteria in the treat-
ment of wastewater?
16. The hydraulic loading of a trick- flow rate and filter area
ling filter may be determined by
17. These can be used to dewater belt press, drying beds, solid bowl cen-
sludge trifuge, gravity thickener
18. Most important to providing ad- sunlight, algae, bacteria and time
equate sewage treatment in a
stabilization pond
19. Offensive and objectionable septic conditions are present
odors which sometimes occur
in trickling filters usually indi-
cate
20. Dissolved Oxygen (DO) in aera- 2 to 4 mg/L
tion tank of an activated sludge
, plant should be maintained at
or about
21. Contributes to the infiltration in breaks in the main lines, high ground wa-
a collection system ter levels, heavy rains, hydro jet cleaning
plugged mains
22. When a centrifuge pump loses pump is no longer moving liquid
prime the
23. A Rotating Biological Contactor fixed firm biological treatment process
(RBC) is
24. Needs to be checked regularly aeration equipment and mixed liquor
to properly operate an activated solids
sludge treatment plant
25. Point source discharges are discharges that come from pipes or ditch-
es that are monitored, controlled and in-
spected
26. Non-point discharges are discharges that have intermittent, dis-
persed flows having little or no control
27. The Texas Water Code estab- setting stream standards, issues permits
lishes the protection of water for discharges, identifies non-point source
quality and quantity of the state controls, and establishes water reuse.
by
28. The wastewater plant operator treating wastewater discharged into the
is primarily responsible for community
29. Chapter of the Texas Water Chapter 26 and Texas Commission of En-
Code is the state law control- vironmental Quality
ling water pollution and au-
thority to control discharges in
Texas
30. The Texas Commission on En- causes permit violation, falsifies records
vironmental Quality can revoke or neglects their duty
1. The name of the State Agency Texas Commission of Environmental
responsible for enforcing pollu- Quality
tion control laws in Texas
2. The term pathogenic means Capable of causing disease
3. The minimum separation be- 9 feet
tween sewer lines and potable
water lines is
4. A licensed wastewater operator consistently does best job possible, prac-
is a professional tices personal safety, strives to improve
job knowledge, strives to keep the plant
and collection system in the best appear-
ance and working order
5. An important step in testing Filtering a sample
a sample for Total Suspended
Solids is
6. The Biochemical oxygen De- Measuring the dissolved oxygen (DO)
mand (BOD) of a sample is used
based on
7. The results of Biochemical Oxy- How the plant was operating 5 days ago
gen Demand (BOD) sample tak-
en at a treatment plant tells the
operator
8. Which of the following are dan- Natural gas, gasoline fumes, hydrogen
gerous gasses that are likely to sulfide and carbon dioxide
be present in lift stations and
manholes?
9. A preferred hydraulic method of Hydro Jet Cleaner
cleaning sewer lines is
10. Ways to reduce bad odors com- routinely cleaning slow running or low flow
ing from a collection system lines, adding chlorine or hydrogen perox-
ide to the collection system
, Wastewater Class B Texas Test with Verified Answers
11. Types of pipe that are common- ductile iron, Poly Vinyl Chloride (PVC)
ly used in wastewater collection
system
12. Before entering a confined Use approved monitoring device and
space a worker should check for the presence of dangerous
gasses, ventilate the space with a blower,
wear a safety harness and attach a life line
13. A properly designed and op- 30-40%
erated primary sedimentation
tank should remove per-
cent of incoming BOD
14. Devices that may be used to de- air bubbler, floats, electrodes, Acoustic
termine the level of sewage in a (sonic)
lift station
15. What is the most important role decompose organic matter
of aerobic bacteria in the treat-
ment of wastewater?
16. The hydraulic loading of a trick- flow rate and filter area
ling filter may be determined by
17. These can be used to dewater belt press, drying beds, solid bowl cen-
sludge trifuge, gravity thickener
18. Most important to providing ad- sunlight, algae, bacteria and time
equate sewage treatment in a
stabilization pond
19. Offensive and objectionable septic conditions are present
odors which sometimes occur
in trickling filters usually indi-
cate
20. Dissolved Oxygen (DO) in aera- 2 to 4 mg/L
tion tank of an activated sludge
, plant should be maintained at
or about
21. Contributes to the infiltration in breaks in the main lines, high ground wa-
a collection system ter levels, heavy rains, hydro jet cleaning
plugged mains
22. When a centrifuge pump loses pump is no longer moving liquid
prime the
23. A Rotating Biological Contactor fixed firm biological treatment process
(RBC) is
24. Needs to be checked regularly aeration equipment and mixed liquor
to properly operate an activated solids
sludge treatment plant
25. Point source discharges are discharges that come from pipes or ditch-
es that are monitored, controlled and in-
spected
26. Non-point discharges are discharges that have intermittent, dis-
persed flows having little or no control
27. The Texas Water Code estab- setting stream standards, issues permits
lishes the protection of water for discharges, identifies non-point source
quality and quantity of the state controls, and establishes water reuse.
by
28. The wastewater plant operator treating wastewater discharged into the
is primarily responsible for community
29. Chapter of the Texas Water Chapter 26 and Texas Commission of En-
Code is the state law control- vironmental Quality
ling water pollution and au-
thority to control discharges in
Texas
30. The Texas Commission on En- causes permit violation, falsifies records
vironmental Quality can revoke or neglects their duty
