Not just spin. Revolution. That’s the tagline for a U.S.-made dewatering centrifuge that earned a 2013 Water Environment Federation (WEF) Innovative Technology Award. A Wisconsin equipment-repair company got into designing and manufacturing decanter centrifuges in 1989 when a municipal customer couldn’t afford the four to five months required for a unit to be shipped from overseas. Introduced at WEF’s annual convention last month, the THK Thickening System’s patented “hydraulic assist” drive produces up to 8% cake without polymer. It’s 90% smaller than gravity belt or rotary drum systems and enclosed to minimize odor. It comes with a computer terminal that integrates with a plant’s operating system, and the company provides monitoring services for customer who want it. In this video, President Michael Kopper shows how WEFTEC attendees in Chicago watched the Kenosha Water Utility’s THK 18-3 at work in real-time in Wisconsin. The unit replaced a 26 mgd facility’s dissolved air flotation thickening (DAF) system and saves $140,000 annually in operating costs.