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Sewage and Wastewater Treatment

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About this collection

MINTRA CET includes short topic-based sets such as incident investigation, accommodation safety, anchoring operations and firefighting. Study an individual module, then review your mistakes in your account.

“MINTRA CET — Sewage and Wastewater Treatment” contains 5 questions across 1 collection.

Learning

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Exam

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Sample questions and answers

These examples come from the published collection. Choose Learning to study questions in sequence, or Exam to check your knowledge.

The details of the sewage discharge regulations can be found in MARPOL Annex IV.

One correct answer

  • True.✓ Correct answer
  • False.
What is the final step in the treatment process?

One correct answer

  • The disinfection of effluent using chemicals or ultraviolet light in the contact tank.✓ Correct answer
  • The separation of solids from liquid waste using a screen or grinder in the primary tank.
  • The breaking down of organic matter by microorganisms in the treatment tank.
To reduce the risk of fire, cigarette buds should be flushed down the toilet.

One correct answer

  • False.✓ Correct answer
  • True.
Which of the following is an indicator that the tank is turning anaerobic?

One correct answer

  • A foul smell, similar to rotten eggs.✓ Correct answer
  • The formation of rust.
  • A distinctive colour change.
Among other things, which of the following may be checked during a Port State Control inspection?

Multiple correct answers

  • That all crew members know the international and local regulations.✓ Correct answer
  • The chlorine content in the effluent.✓ Correct answer
  • The sewage treatment plant is being operated correctly by the ship’s crew.✓ Correct answer
  • The validity of the International Sewage Pollution Prevention Certificate.✓ Correct answer
  • The humidity of the tank.
  • The value of the treatment plant.

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