Wastewater Exam Class C: Wastewater Exam Class C Exam Study Guide: Latest Updated

The Activated Sludge Process: A. requires preparation B. requires Activated Carbon C. is an aerobic biological process. D. Usually precedes primary sedimentation. E. Requires 50% by volume old sludge to work effectively. (Ans- C. Is an Aerobic biological process A complete mix activated sludge plant has a fast settling sludge and high amounts of pin floc leaving the clarifier. One way to correct this problem is to : A. Increase the RAS Flow B. Reduce Wasting Rates C. Increase dissolved oxygen levels. D. Increase the F/M ratio by wasting more E. Increase the sludge age by wasting less. (Ans- D. Increase the F/M Ratio by Wasting More Which of the following flow rates should be measured if the operator is to control plant properly? A. Aeration rate or resulting dissolved oxygen level. B. Influent or effluent. C. return sludge D. waste sludge E. all the above (Ans- E. all the above