Exam Study Guide: Aeration Basin Conditions and PFAS Chemicals

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.

Exam Study Guide: Aeration Basin Conditions and PFAS Chemicals

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 Quicklime Use and Water Main Calculations. This time you can test your knowledge about aeration basin conditions and PFAS chemicals.

Wastewater Treatment Sample Question

During a visual inspection of the activated sludge aeration basin, you notice a stiff white foam has formed on the surface. What is the most probable condition?

A. Young sludge or underloaded system
B. Filamentous overloading
C. Polymer overdosing
D. Older sludge or overloaded system

Water Treatment Sample Question

PFAS chemicals are ______________ found in some drinking water sources.

A. Synthetic organic compounds
B. Volatile organic compounds
C. Inorganic compounds
D. Radionuclides 

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 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.


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