The Kenosha (Wisconsin) Water Utility recently embarked on a plan to increase the generation of methane gas to produce electricity and turn biosolids into a usable Class A product.
Its Energy-Optimized Resource Recovery Project is a model for midsize facilities looking to become leaders in wastewater innovation. From the beginning, KWU realized that to achieve its goals, it was critical to remove the maximum amount of solids at the plant headworks.

To increase solids capture, the utility replaced its old coarse bar screens with two Enviro-Care Model FRSIII FSM Filterscreens with a verified solids capture rate of more than 85 percent.
Each screen has 6 mm holes and is rated for a peak flow of 50 mgd. The Filterscreens are equipped with FSM’s proprietary auto-adjusting cleaning brushes, which require no manual adjustments for the life of the brush. These high-capture screens significantly improve downstream processes including digester performance and produce cleaner biosolids.   

Kenosha is seeing a 900 percent increase in solids capture, according to a utility spokesperson. Since the screens were installed, there have been no primary clarifier failures; no floatables on the clarifiers, wet wells or aeration tanks; and no rags in the centrifuge tanks.

To reduce the volume of these solids going to landfill, Kenosha also installed two FSM washer compactors each with a capacity of 176 ft³/hr, which produce more than 40 percent dry solids and achieve 60 to 85 percent volume/weight reduction.


Enviro-Care Company, a member of the WAMGROUP, supplies screening and solids/grit management equipment to the North American water and wastewater markets. Brands include SAVI, SPECO, WAM and FSM Frankenberger. For more information: 224/302-0308 • ecsales@enviro-care.com • www.enviro-care.com



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