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 Chlorine Cylinder Use and Fluoride Calculation. This time you can test your knowledge about pH fluctuations and radium MCLs.
Wastewater Treatment Sample Question
What causes the pH to decrease during the overnight portion of the diurnal cycle?
A. PhotosynthesisB. RespirationC. NitrificationD. Denitrification
Water Treatment Sample QuestionWhat is the MCL for combined radium 226 and 228 isotopes?
A. 5 picocuries per literB. 15 ppmC. 10 mg/LD. 30 ppb
To see answers for both of the
