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2024 WASTEWATER PRACTICE EXAM WITH CORRECT ANSWERS
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2024 WASTEWATER PRACTICE EXAM WITH CORRECT ANSWERS
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2024 WASTEWATER PRACTICEEXAM WITH CORRECT ANSWERS
Odors occur when treatment becomes - CORRECT-ANSWERSAnaerobic
What should an operator do before entering a manhole - CORRECT-
ANSWERSTest for all hazardous gases and oxygen levels and ventilate the
manhole before entering
A simple method for indication when to waste sludge is - CORRECT-
ANSWERSTotal sedimentation test
Landfill applied sludge must have a solids content of at least ? - CORRECT-
ANSWERS20%
Effluent dosage of chlorine in the contact chamber must produce a total
combined residual of ? - CORRECT-ANSWERS1.0mg/L after 20 minutes
TCEQ allows the reuse of wastewater, some of these uses include -
CORRECT-ANSWERSirrigation, aquifer recharge, cooling towers and fire
protection
Organic solids include - CORRECT-ANSWERSorganic materials from plant,
animals or humans
Dangerous gases are produced during bacterial decomposition of organics in
wastewater. The main gases are - CORRECT-ANSWERSHydrogen sulfide,
carbon dioxide and methane
The majority of Dissolved Oxygen in raw sewage come from - CORRECT-
ANSWERSPotable drinking water
Approximately How many pounds does each person contribute of BOD to the
system daily - CORRECT-ANSWERS0.17
If the operator of a system received a call that a lift station is production of a
strong smell of "Rotten eggs" this would be an indication that - CORRECT-
ANSWERSHydrogen sulfide gas is present
Sources of wastewater include - CORRECT-ANSWERSDomestic, Storm water,
commercial, food processing, agricultural and industrial
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