After the Kenosha (Wisconsin) Water Utility set a goal for a more sustainable wastewater treatment plant, Centrisys and CNP focused on a practical and sustainable process solution. Centrisys builds decanter centrifuges and dewatering systems, while CNP designs and supplies nutrient-recovery systems focusing on optimizing biosolids treatment processes.
The companies delivered technologies to meet KWU’s environmental goals and saw cost savings using the Centrisys CS214HC dewatering centrifuge; Centrisys THK200 for waste activated sludge; Centrisys THK200 for primary sludge; CNP PONDUS Thermo-Chemical Hydrolysis Process; and the Sülzle Klein Compact-Dry belt dryer.
PreDigestion Phosphorus Recovery
CalPrex, acquired by CNP, is a calcium phosphate-recovery technology process that solubilizes sludge’s phosphorus and recovers it as brushite — a plant-ready fertilizer that requires no further processing. Combining CalPrex and AirPrex recovers over 50 percent of total phosphorus, allows for digester and equipment protection, and reduces biosolids disposal amounts and polymer for dewatering.
Reduce Power Usage
Dewatering upgrades don’t get much bigger than Wards Island in New York. Performance testing for the Wards Island centrifuge installation (16 Centrisys CS26-4 centrifuges) was completed in September 2017, showing better-than-spec performance. There was 50 percent power reduction compared to old centrifuges, 25 percent higher throughput compared to old centrifuges, 17 percent lower polymer consumption than specification, 1 percent drier cake than specified, and 99 percent capture at 270 gpm — 4 percent higher than spec.
Centrisys Corporation is a U.S. manufacturer of dewatering and thickening centrifuges, as well as complete dewatering systems for municipal and industrial wastewater. The company’s focus is centrifuge equipment, including the award-winning sludge thickener THK series. CNP Technology Water and Biosolids Corporation designs and supplies systems for nutrient recovery and sludge optimization. Led by a team of wastewater industry veterans and supported globally by engineers with decades of experience in biosolids treatment, CNP continues to pioneer innovative wastewater system solutions. For more information: 262/654-6006 • info@centrisys.com • info@cnp-tec.com • www.centrisys.com • www.cnp-tec.com
