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 Influent Wastewater Alkalinity; and Ion-Exchange Softening Plant Operation. This time, you can test your knowledge about activated sludge bacteria, and the properties of chlorine.
Wastewater Treatment Sample Question:
The bacteria found in the activated sludge process convert waste that is normally nonsettleable into what product?
A. Biofilm that will grow on rock or plastic media
B. Biomass flocs that are heavy enough to settle
C. Dense anaerobic sludge mass that will float
D. Magnesium-ammonium-phosphate crystals
Answer: The answer is
Exam Study Guide: Activated Sludge Bacteria; and Properties of Chlorine
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.
Jun 07, 2018
| by Ron Trygar |












