Level 1 · Entry sample questions
4 free sample questions on headworks and screening for the Level 1 · Entry wastewater treatment operator exam. Try each one, then open the answer to check your work.
What is the basic purpose of a **comminutor**?
Answer: C. Cut solids into smaller pieces
A comminutor cuts or shreds solids into smaller pieces while the wastewater continues through the unit.
What is a **bar screen** designed to remove from incoming wastewater?
Answer: C. Large debris such as rags and plastics
A bar screen catches large debris such as rags, plastics, sticks, and other objects before they can clog or damage downstream equipment.
What is the main purpose of a bar screen?
Answer: B. To remove large debris from wastewater
A bar screen removes large debris such as rags, sticks, and trash before it can damage or clog downstream equipment.
What does a comminutor do?
Answer: A. Cuts and shreds coarse solids
A comminutor combines screening and grinding by catching coarse material and cutting or shredding it while it remains in the wastewater flow.
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Operator Master has 4 Level 1 · Entry headworks and screening questions, free.
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