FLORIDA WASTEWATER CLASS C PRACTICE TEST EXAM NEWEST 2026 ALL STUDY QUESTIONS WITH VERIFIED SOLUTIONS 100% GUARANTEED PASS | RATED A+
Dark brown, almost gray/black sudsy foam on the aeration tank surface. Mixed liquor color is very dark brown, to almost black. There is the detection of a septic or sour odor in the area of the aeration tank. What is the BEST method to correct the problem?
A. Decrease the RAS rate to decrease the c...