Study Guide Answer Key

Here are the answers to the June 1, 2022 edition of TPO's Exam Study Guide: What operational parameters are able to be controlled by the operator in an activated sludge treatment process? The answer to the question is C, DO, return rate and wasting rate. The activated sludge process has many variables that an operator must be aware of, but it's only these three they have total control over. The operator may set the DO in the plant to the point necessary to maintain aerobic conditions and needs of the microorganism population. The operator as has the ability to set the return