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 Anaerobic Digester Classifications and Water Hardness Calculations. This time you can test your knowledge about belt filter press alignment, and hardness concentration conversions.
Wastewater Treatment Sample Question
When operating a belt filter press, alignment is critical for proper operation and safety. What system normally accomplishes this operation?
A. Tension-alignment system
B. Belt tracking system/automatic sensing arm
C. Integrated SCADA controls
D. This is manually controlled by the press operator
Water Treatment Sample Question
How are hardness concentrations converted from mg/L as calcium carbonate to grains per gallon?
A. Dividing mg/L as calcium carbonate concentration by 17.1
B. Multiplying mg/L as calcium carbonate concentration by 17.1
C. Dividing mg/L as calcium carbonate concentration by 2.5
D. Multiplying mg/L as calcium carbonate concentration by 2.5
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.
