City to upgrade water treatment system in Wisconsin, US

The City of Abbotsford in Wisconsin is seeking approval from the Department of Natural Resources to upgrade its municipal wastewater treatment system.

The upgrade is estimated to cost $9.1m, with annual operation and maintenance costs of $400,000. To develop the project, the city will need financial assistance through the USDA Rural Development programme.

The city decided to replace the existing structure and equipment in its 30-year-old facility, to ensure that it complies with existing water treatment standards and to provide additional reserve capacity for future growth.

It proposes construction of a new sequencing batch reactor treatment system on 1,000ft² property southeast of the current treatment facility.

The upgrade also includes a new outfall sewer that will discharge treated effluent to Elm Brook, immediately to the west of the new site.

The overall upgrade project will comprise improvements of the existing influent sewage pumping station, including deployment of a new influent fine screen unit as well as a force main sewer extension to the new site.

In addition, the project includes installation of a new grit removal unit, a dual-tank sequencing batch reactor treatment system, a chemical-feed phosphorus-reduction unit, an aerobic waste sludge digester unit as well as new waste sludge reed storage beds.There will also be a new administration and control building with laboratory and associated equipment.