Treatment Plant Operator Exam Study Guide Answers

It is recommended that rotating biological contactors be covered for outdoor operations. What is the reason for that recommendation?The answer to this question is D, it prevents weather related problems. Typical RBCs are covered when operated outdoors. The reason for this is to eliminate or reduce any weather effects. This includes preventing freezing in winter operations, prevent the zoogloeal mass from drying from the sun and being washed off during a rain event. RBCs are not as prevalent as they were in the past due to problems with the shafts breaking, but are still used in many plants for nutrient removal