Treatment Process
At the plant, treatment begins at the headworks building where self-cleaning bar/filter screens and a vortex grit chamber remove inorganic solids. Solids are further removed by two 95-foot-diameter primary clarifiers. Those solids are then treated in anaerobic digester. The waste water then flows to aeration basins where air and microorganisms help purify the waste water. The water flows through one of four final clarifiers. The facility also has a phosphorous removal system, and the waste water is disinfected with ultraviolet light before it can be discharged into the Wisconsin River.
Capacity After Upgrade
The treatment plant design is to be completed in four phases with the first phase to be completed in 2010 with a BOD loading rate of 21,190 lbs/day and with phase four being 79,000 lbs/day.
