Study Guide Answer Key

Here are the answers to the July 11, 2022 edition of TPO's Exam Study Guide: While using sand beds to dry sludge, what is the probable cause of excessive odors when sludge is applied, and what is the best solution? The answer to this question is C, inadequate digestion of sludge, and correct the digestion problem. While operating a sludge drying bed, the proper digestion of the sludge is very important before applying any sludge. Inadequately digested sludge will have offensive odors and will attract vectors such as flies. Properly digested sludge should have little to no odors when applied to the drying