Marshall Municipal Utilities

Final Clarifiers

The Final Clarifiers are designed to allow sludge to settle while the clean water is discharged to the receiving stream. We have three finals, and they operate in parallel fashion. Like the aeration basins, there is a splitter that divides the stream equally. The settled sludge is removed from the basins by gravity and flows to the RAS pump wet well. Excess or waste activated sludge (WAS) is removed from these basins and transferred to the sludge holding basins by gravity flow. In 1998, we installed an inline MAG flow meter on the waste line so that we can better track how much sludge we are wasting from the system.