Water Treatment Operator-in-Training (OIT) Practice Test

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Prepare for the Water Treatment Operator-in-Training Test. Study with quizzes and detailed explanations to maximize your understanding and readiness for the exam.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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Why is hydrogen sulfide gas a problem in sewers?

Results in an increase in rodent populations
The gas can block the flow of sewage
Since it is odourless, workers will not know when they are exposed
Leads to corrosion of certain types of sewers

The correct answer is: Leads to corrosion of certain types of sewers

Hydrogen sulfide gas poses significant issues in sewer systems primarily due to its corrosive properties. This gas can lead to the deterioration of materials commonly used in sewer construction, such as concrete and certain metals. As the gas reacts with moisture and other substances in the sewer environment, it forms sulfuric acid, which aggressively attacks the concrete, leading to structural damage and potential failure of the sewer system over time. Understanding the implications of hydrogen sulfide is critical for water treatment operators, as regular maintenance and monitoring may be required to mitigate damage and extend the lifespan of sewer infrastructure.