Welcome back to TPO magazine's Exam Study Guide Series, which offers a pair of water/wastewater study questions with in-depth explanations of the answers. Last time, we covered a set of wastewater and drinking water treatment questions on the topics of Flow Velocity; and Chlorine Reactions. This time, you can test your knowledge about settled sludge and ladder safety.
Wastewater Treatment Sample Question
What type of settled sludge digests more efficiently in an anaerobic digester?
A. Grit and manually removed screeningsB. Primary clarifier settled sludge C. Scum and mechanical screeningsD. Secondary clarifier settled sludge
Answer: The answer to this question is B. Anaerobic digesters are more efficient with predominately sludge removed from a primary clarifier.
Exam Study Guide: Settled Sludge; and Ladder Safety
Maintaining your education is important, especially in a career that demands licensing exams. Prove you’re an expert operator by answering these questions and others from our Exam Study Guide Series.
Jul 11, 2019
| by Rick Lallish and Drew Hoelscher |
