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CNP – Technology Water and Biosolids designs and supplies nutrient recovery and biosolids treatment optimization systems. CNP’s key technologies are: AirPrex and CalPrex, phosphorus recovery technologies, and PONDUS, a Thermo-Chemical Hydrolysis Process (TCHP). CNP is a division of Centrisys Corporation. Centrisys Corporation is a U.S.A. manufacturer of dewatering centrifuges, sludge thickeners and complete dewatering systems for municipal and industrial wastewater. The company’s focus is centrifuge equipment, including the award winning THK sludge thickener. Centrisys provides global service, repair and parts for all brands of centrifuges.