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 Sampling Rules; and Risk and Resilience Assessments. This time you can test your knowledge about pumping heavy sludges; and slow sand gravity filters.
Wastewater Treatment Sample Question
Which of the following pumps would be the least affective for pumping heavy sludges?
A. Progressing cavityB. Rotary lobeC. CentrifugalD. Diaphragm
Answer: The answer to this question is C. Progressive cavity pumps are well suited for pumping sludges, especially for dewatering or thickening processes. Of the
