Selected Products for Oxidation Ditch
Sewage is treated in large round or oval ditches with one or more horizontal aerators typically called brush or disc aerators which drive the mixed liquor around the ditch and provide aeration. The oxidation basin has three concentric channels. The outer channel, where the majority of the process ‘work’ takes place, is an aerated anoxic reactor. The DO of the second channel operates in a swing mode to vary with daily load conditions. The last channel maintains a polishing mode removing remaining BOD and ammonia before the flow exits to final clarifiers. The mechanical backbone is its unique aeration disc with its high oxygen transfer and unmatched mixing efficiency.