TEXAS WASTEWATER CLASS B NEWEST ACTUAL EXAM COMPLETE 180 QESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+
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Course
TEXAS WASTEWATER CLASS
Institution
TEXAS WASTEWATER CLASS
1. The name of the State Agency responsible for enforcing pollution control laws in
Texas - Texas Commission of Environmental Quality
1. The term pathogenic means - Capable of causing disease
2. The minimum separation between sewer lines and potable water lines is - 9 feet
3. A licensed wastew...
TEXAS WASTEWATER CLASS B NEWEST
ACTUAL EXAM COMPLETE 180 QESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS)2024-2025 |ALREADY GRADED A+
1. The name of the State Agency responsible for enforcing pollution control laws in
Texas - Texas Commission of Environmental Quality
1. The term pathogenic means - Capable of causing disease
2. The minimum separation between sewer lines and potable water lines is - 9 feet
3. A licensed wastewater operator is a professional - consistently does best job
possible, practices personal safety, strives to improve job knowledge, strives to
keep the plant and collection system in the best appearance and working order
4. An important step in testing a sample for Total Suspended Solids is - Filtering a
sample
5. The Biochemical oxygen Demand (BOD) of a sample is based on - Measuring
the dissolved oxygen (DO) used
6. The results of Biochemical Oxygen Demand (BOD) sample taken at a treatment
plant tells the operator - How the plant was operating 5 days ago
7. Which of the following are dangerous gasses that are likely to be present in lift
stations and manholes? - Natural gas, gasoline fumes, hydrogen sulfide and
carbon dioxide
8. A preferred hydraulic method of cleaning sewer lines is - Hydro Jet Cleaner
9. Ways to reduce bad odors coming from a collection system - routinely cleaning
slow running or low flow lines, adding chlorine or hydrogen peroxide to the
collection system
10. Types of pipe that are commonly used in wastewater collection system - ductile
iron, Poly Vinyl Chloride (PVC)
11. Before entering a confined space a worker should - Use approved monitoring
device and check for the presence of dangerous gasses, ventilate the space with
a blower, wear a safety harness and attach a life line
12. A properly designed and operated primary sedimentation tank should remove
_____ percent of incoming BOD - 30-40%
, 13. Devices that may be used to determine the level of sewage in a lift station - air
bubbler, floats, electrodes, Acoustic (sonic)
14. What is the most important role of aerobic bacteria in the treatment of
wastewater? - decompose organic matter
15. The hydraulic loading of a trickling filter may be determined by - flow rate and
filter area
16. These can be used to dewater sludge - belt press, drying beds, solid bowl
centrifuge, gravity thickener
17. Most important to providing adequate sewage treatment in a stabilization pond -
sunlight, algae, bacteria and time
18. Offensive and objectionable odors which sometimes occur in trickling filters
usually indicate - septic conditions are present
19. Dissolved Oxygen (DO) in aeration tank of an activated sludge plant should be
maintained at or about - 2 to 4 mg/L
20. Contributes to the infiltration in a collection system - breaks in the main lines,
high ground water levels, heavy rains, hydro jet cleaning plugged mains
21. When a centrifuge pump loses prime the - pump is no longer moving liquid
22. A Rotating Biological Contactor (RBC) is - fixed firm biological treatment process
23. Needs to be checked regularly to properly operate an activated sludge treatment
plant - aeration equipment and mixed liquor solids
24. Point source discharges are - discharges that come from pipes or ditches that
are monitored, controlled and inspected
25. Non-point discharges are - discharges that have intermittent, dispersed flows
having little or no control
26. The Texas Water Code establishes the protection of water quality and quantity of
the state by - setting stream standards, issues permits for discharges, identifies
non-point source controls, and establishes water reuse.
27. The wastewater plant operator is primarily responsible for - treating wastewater
discharged into the community
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