GRAEF-USA Inc.

Jackson Wastewater Treatment Facility

Taking a trip to the Village of Jackson will afford you the opportunity to see the first North American installation of a real-time monitored intermittent aeration system at a municipal wastewater treatment facility (WWTF). From the project’s onset, GRAEF worked closely with the Village of Jackson to design a successful expansion of their WWTF. The expansion increased capacity from 870,000 gallons per day (gpd) to 1,250,000 gpd, with provisions for further expansion to 2,500,000 gpd. As part of the expansion, secondary treatment efficiency was improved by replacing rotating biological contactors (RBCs) with extended aeration activated sludge.

Although Schreiber Corporation had been working on the control system concept, GRAEF brought the expertise and practical experience to design a wastewater treatment system that implemented this concept. The expanded WWTF is designed to use a control system that features real-time nitrate and phosphate monitoring, which causes aeration tanks to automatically run aerobically or anaerobically. This control technology saves energy costs and significantly decreases chemical usage.

Until now, there were no treatment systems operating in North America that could quickly measure pollutant levels. The Jackson WWTF has that capability and, as a result, automatically makes informed decisions on starting and stopping various stages of the treatment process, as well as determining if chemical additions are required. Each of the three treatment stages (oxic, anoxic, and anaerobic) take place in the same tank, unlike commonly designed facilities that require wastewater to move through a variety of treatment components. Also unlike other activated sludge systems, Jackson’s WWTF virtually runs itself, requiring minimal operator input. The WWTF design saves labor and energy and increases efficiency. It is a working illustration of a major step forward in activated sludge treatment.
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LOCATION Jackson, WI

FACTS This project was done in collaboration with Muermann Engineering Project Data: Phase III Completion: 2000 Estimated Construction Cost: $4,902,800 Actual Construction Cost: $4,690,500