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 Pump and Motor Misalignment and Flow Rate Calculations. This time you can test your knowledge about the purpose of wasting and Lead and Copper Rule requirements.
Wastewater Treatment Sample Question
Even though there are many ways to determine wasting amounts, what is the main purpose of wasting?
A. Maintain acceptable sludge blanket depth
B. Maintain proper facultative levels in the lagoon
C. Maintain effluent total suspended solids requirements
D. Maintain a sludge age that produces the best effluent
Water Treatment Sample Question
The Lead and Copper Rule revision requires the __________ liter of water to be collected when the sample location has a known lead service line.
A. First
B. Fifth
C. 10th
D. 15th
To see the answers to both 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.
