Centrisys Corporation is a U.S.A. manufacturer of dewatering centrifuges and sludge thickeners, 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. Centrisys provides global service, repair and parts for all brands of centrifuges. CNP – Technology Water and Biosolids Corporation designs and supplies nutrient recovery and biosolids treatment optimization systems. CNP’s key technologies are: AirPrex® and CalPrex™, phosphorus recovery technologies recovery technology, and PONDUS, a Thermo-Chemical Hydrolysis Process (TCHP). CNP - a division of Centrisys Corporation.
In 1987, Centrisys designed and built its first centrifuge around what was learned in the field by servicing competitor’s equipment in both municipal and industrial applications. Thirty years later, the Centrisys engineering team continues to benefit from problem-solving, learning what does and does not work in the real world and takes that knowledge to continue Centrisys’ lifelong commitment to brand excellence. By providing the most efficient, robust decanter centrifuges, Centrisys gives our customers the results they need.
The Centrisys Sludge Thickener (THK Series) is specifically engineered to achieve high-performance thickening of biosolids. The non-conical design results in greater G-volume, allowing for the highest capacity of flow to the centrifuge. The THK improves upon existing technologies using fundamental principles of a 1) Centrifuge - 3,000 Gs, 2) Rotary Drum Thickener - fully enclosed and small footprint, 3) Dissolved Air Flotation (DAFT) - air injection. The patented Hydro-Pneumatic design has proven that NO polymer is required under normal conditions (150 SVI)
With four divided screens, the Centrisys SP20 is simple to operate, maintain and clean. The four screen baskets and horizontal design allow for most maintenance to be completed without removing the screw shaft. There is no need to pull the auger out; simply open the maintenance cover to clean. The SP20 combines a longer screen design and dual filtrate zones to create dryer cake solids, cleaner centrate and maximum water drainage. Two filtrate zones allow for the separate collection of clean and dirty centrate. The longer screen design increases retention time by using the entire length of the screw for dewatering.
THE PROBLEM: Phosphorus Solubilization Limits Recovery Efficiency
THE SOLUTION: Acid Phase Digestion: the Biological Solution for P Solubilization
THE BENEFITS: High Efficiency P-Recovery and Digester Protection
• Over 60% Solubilization of P in Bio-P Sludge
• Divert Over 50% of the Soluble P from the Digester
• Reduce 90% of the Soluble P in the CalPrex Reactor
• Reduce up to 50% of the Total P in Biosoilds
• No Ammonium Required
THE PROBLEM: Struvite Mineral Buildup Leads to Reduced Plant Capacity
THE SOLUTION: AirPrex Optimizes the Sludge Treatment Process Like No Other System
THE BENEFITS: AirPrex Removes Struvite while Significantly Improving Treatment Efficiency
• Reduce Polymer Consumption up to 30%
• Reduce Disposal Costs up to 20%
• Reduce Phosphate Recycle Load up to 90%
• Reduce Maintenance Costs up to 50%
• Increase Revenue from Fertilizer up to 20%
THE PROBLEM: Phosphorus is a Limited Resource
THE SOLUTION: Maximum Phosphorus Recovery, Minimum Sludge Production
THE BENEFITS: CalPrex + AirPrex: A Combined Approach
• Reduce Phosphate Recycle Load up to 90%
• Reduce Polymer Consumption up to 30%
• Reduce Disposal Costs up to 20%
• Reduce Maintenance Costs up to 50%
• Recover Over 50% of Phosphorus
Drastically reducing the overall carbon footprint by minimizing solid waste production, PONDUS enables useful repurposing of biosolids (as fertilizer and carbon source) and methane gas outputs (as renewable energy). Using caustic soda and hot water to destroy cell membranes of Waste Activated Sludge (WAS), organic acids are released in the process.
Centrisys/CNP is an exclusive NA distributor for Sülzle Klein dryers. The first U.S. installation of a Compact-Dry was in 2015 at Kenosha, WI. This is a dual belt, low temperature, sludge dryer. The dewatered biosolids are fed at +30% DS and dried to over 90% DS. Since dryer optimization, the biosolids disposal weight is reduced to one-third and are certified as Class A with exceptional quality.
