The City of Oconomowoc Wastewater Treatment Facility has recently
undergone a $7.2 million dollar expansion project. Funds for this
project had been collected since 1991 and deposited into a designated
reserve fund. The scope of the project is as follows:
Added one Secondary Clarifier providing reliable redundancy to these
process steps increasing the capacity of secondary settling to 5.5
million gallons per day (MGD) average, and 12 MGD Peak Flow.
Replaced the present chlorine based disinfection system with ultraviolet
disinfection providing better control of the disinfection process.
This increased the capacity of this process step to 5.5 MGD average and
12 MGD Peak Flow.
Added biosolids storage (1.1 million gallon tank) providing reliable
redundancy to this process step and increasing biosolids capacity to
serve 5.5 MGD average flow. This additional tank adds flexibility during
poor weather conditions when agricultural application is not possible.
Replaced 35 year old main transformer and switchgear serving the plant providing increased reliability.
Added containment basins for chemical delivery and sewer maintenance residuals.
