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 Dewatering Polymer Selection and Granular Activated Carbon Filter Backwash Rate. This time you can test your knowledge about gravity belt thickener components and types of flowmeters.
Wastewater Treatment Sample Question
What part of a gravity belt thickener clears a path on the belt where the water falls freely through the belt?
A. Polymer inlets
B. Linear tension rods
C. Chicanes
D. Rivets
Water Treatment Sample Question
What type of flowmeter uses pressure differential to measure flow rate?
A. Velocity flowmeter
B. Venturi flowmeter
C. Ultrasonic flowmeter
D. Magnetic flowmeter
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.
