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Exam (elaborations)

2024 WASTEWATER PRACTICE EXAM WITH CORRECT ANSWERS

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  • Course
  • Wastewater
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  • Wastewater

2024 WASTEWATER PRACTICE EXAM WITH CORRECT ANSWERS

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  • September 9, 2024
  • 3
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • what is typi
  • Wastewater
  • Wastewater
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Elitaa
2024 WASTEWATER PRACTICE
EXAM 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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