Celebrate the new Wastewater Treatment Facility

As some of you know the city has been in the process of building a new wastewater treatment facility. The plant was constructed to meet several needs of which the most pressing was that of meeting discharge requirements imposed with our permit issued by the Pollution Control Agency. We were at capacity with the old plant and it had exceeded its useful life.

In accomplishing the goal of a new facility a great deal of planning was accomplished. The effort of planning had the city looking at different approaches to not only the types of systems that could be utilized but also the collection system and the degree of treatment. The city now has tertiary treatment in place to protect the receiving water of the Elk River and the environment.

Dave Pesola, our Lead Wastewater Treatment Operator, has provided us with a look at what has occurred.

The many lift stations located throughout the city were improved with the installation of radio monitoring to ensure these are operating correctly. This was done prior to construction of the new facility.

The three existing wastewater treatment lagoons were drained and decommissioned. These have been filled in and graded. Taking these ponds out of service should greatly reduce odors from the plant.

The new facility was designed by Camp Dresser and McKee, Inc. The task of construction was awarded to John T. Jones Construction Company. The new plant was constructed on the site of the decommissioned lagoons.

The project included a number of changes and major items to the wastewater project included a new influent pumping station, a new headworks building, two oxidation basins, two clarifiers, a sludge pumping building with a chemical feed room, an effluent filtration building, an ultraviolet disinfection building, an effluent re-aeration chamber, and an odor control system.

This project also provided for the elimination of a heavily used lift station by construction of a new gravity sewer line to a deeper new influent pumping station.

Construction of the new facility started in October of 2006. On February 4, 2008, the facility began accepting wastewater from the city. Only one half of the facility is presently in use, while testing and construction continues on the other portions of the new facility. The transition has gone smoothly and without any major problems. As the use of the plant progresses the efficiency of operations will improve through both operations and efficient biological action.

The old facility has been taken off line and is presently being dismantled. The building which housed the old facility is be reused and remodeled into a new administration building which will contain a new laboratory, offices and a maintenance garage. The old administration building at the plant site will be used by the water department.

The projected completion date for complete project completion is scheduled for June of 2008. Once the plant is completed in entirety the capacity to treat domestic wastewater will be 1.25 million gallons a day. This will serve the community for a great number of years and position the city very well for future growth.

Thank you Dave for that great summary! It is gratifying to know we’re well set for the future and we’re meeting the more stringent requirements imposed by PCA and being environmentally responsible.