Study Guide Answer Key

Here are the answers to the Nov. 10, 2022 edition of TPO's Exam Study Guide: Aeration reactors using buoyant free-floating biofilm carriers in an activated sludge process are known as what sort of treatment? The answer to the question is B, moving bed biological reactors (MBBR). MBBRs are relatively new treatment options, they consist of aeration basins or activated sludge tanks, in some cases retrofitted with small plastic free-floating buoyant media approximately 25% to 67% of the volume of the tank. This is a hybrid of activated sludge and fixed-film treatment. The most common use is plants looking for an increase