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 Lift Station Location and Aqueous Solution Freezing Temp. This time you can test your knowledge about rising sludge causes and Right-to-Know programs.
Wastewater Treatment Sample Question
What is the main cause of rising sludge in an activated sludge secondary clarifier?
A. Toxic shock load
B. Denitrification
C. Nitrification
D. High F/M levels
Water Treatment Sample Question
What is the primary purpose of a Right-to-Know program?
A. To train employees on their required daily tasks before assigning such tasks.
B. To advise the employee of the hazards associated with the chemicals and materials they work with.
C. To train employees on treatment plant security measures.
D. To train employees on confined space entry procedures.
To see answers for both of the above questions, click this link.
About the authors: Rick Lallish is the Water Pollution Control program director at the Environmental Resources Training Center (ERTC) of Southern Illinois University-Edwardsville. He provides training for entry-level operators in the wastewater field and operators throughout the state looking to further their education. Lallish was also named the 2017 Illinois Operator of the Year and 2018 president of the Illinois Association of Water Pollution Control Operators.
Drew Hoelscher is the program director of drinking water operations at the Environmental Resources Training Center in Edwardsville, Illinois.
