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Category Archives: Centrisys

Centrisys/CNP’s R&D Director Receives Young Professionals Award from Water & Wastes Digest

yoshiCentrisys/CNP, Kenosha, Wisconsin, is proud to announce that Hiroko Yoshida, R&D Director, was recently selected as one of Water & Wastes Digest (WWD) top young professionals in the water and wastewater industry.

The impressive WWD award is given to up-and-coming professionals in the water and wastewater industry who are talented and passionate professionals under 40 years old. These individuals must not only excel in their professional lives, but also give back to their community and hold worldly attitudes and views about the industry’s importance and necessity around the globe.

“I’m very excited to have won this award and love being part of such an innovative company,” Yoshida says. “It’s satisfying to start a project at the lab scale and see it progress into a full installation with great results.”

Yoshida previously accepted an invitation to the White House to attend the U.S. EPA Nutrient Recycling Challenge conference and was named one of the top four winners at the event. She notes one of her professional accomplishments as being part of the team was to bring the first full scale AirPrex® installation to the U.S.

She holds a B.S. in environmental studies from the University of Nebraska-Lincoln, Master of Science in water resource management and civil and environmental engineering, University of Wisconsin-Madison and a PhD in environmental engineering, Technical University of Denmark.

Yoshida specializes in solids handling and hopes to contribute to the advancement of the industry as it relates to that specialty. She has worked at Centrisys/CNP for over three years and is currently leading a pilot test program for CalPrex™, Centrisys/CNPs newest phosphorus recovery technology. Yoshida is involved with data analysis and process optimization. She says that the technology may be used in both municipal and industrial applications. “CalPrex is a lot more involved than normal,” Yoshida says. “Everyone is working night and day on this pilot — we’re excited to show what it can do.”

Yoshida stresses the importance of Centrisys/CNP as a whole. “Everyone in the company works so hard to bring these great innovations,” she says. “It’s not a win for just me; it’s a win for the team. I’m just looking forward to learning more!”


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 is a division of Centrisys Corporation.

For more information, please contact:

Centrisys/CNP
9586 58th Place
Kenosha, WI 53144
262-654-6006
Jessie Jones, Marketing Associate
Email: Jessie.jones@centrisys.us
Website: www.centrisys.com

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Little Patuxent Water Reclamation Facility Upgrades System with AirPrex® for Sludge Optimization and P-Recovery

CNP – Technology Water and Biosolids, a division of Centrisys Corporation in Kenosha, Wisconsin, recently supplied the Howard County Department of Public Works with the patented CNP AirPrex process. AirPrex, scheduled to be operational during the Q3 2018, will improve the current biosolids processing facility by sequestering phosphorous and preventing the formation of phosphorous scale known as struvite.

Howard County Department of Public Works engaged HDR to provide engineering design services for upgrades to the biosolids facilities at the Little Patuxent Water Reclamation Facility in Savage, Maryland. The Little Patuxent facility used dewatered cake lime stabilization for biosolids treatment. The changes to the biosolids processing included eliminating the lime system and replacing it with anaerobic digesters, centrate demmonification and associated solids screening, thickening, odor control and digester gas handling improvements.

After an extensive evaluation of phosphorous removal technologies, the design was based on AirPrex because of its demonstrated ability to prevent struvite precipitation in downstream processes, including piping and the solids dewatering equipment. The Little Patuxent facility uses decanter centrifuges for biosolids dewatering.The AirPrex process is a patented phosphorus recovery technology owned by CNP. AirPrex reduces problematic struvite buildup in wastewater treatment plants improving overall plant efficiencies, including dewatering improvements resulting in significant operational cost savings for treatment plants.

 

Process

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AirPrex’s flexibility was another factor in the design. The process either sequesters struvite, leaving it in the biosolids stream for land application on farm fields as fertilizer, or recovers struvite, separating it from the biosolids stream. Once separated, the struvite can be used as a beneficial slow-release fertilizer.

Howard County selected the Construction Manager at Risk (CMAR) delivery method for the construction of the upgrades and installation of AirPrex. Clark Construction, the CMAR contractor, negotiated with Kershner Environmental Technologies, the local CNP representative, on behalf of the county to procure AirPrex.

The Little Patuxent Water Reclamation Facility is a 29 MGD advanced wastewater treatment plant using enhanced nutrient removal processes to reduce nitrogen and phosphorous discharges to the Chesapeake Bay. The facility serves 56 percent of the county’s 317,000 population.

 

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.


For more information, please contact:

Centrisys/CNP
9586 58th Place
Kenosha, WI 53144
262-654-6006
Jessie Jones, Marketing Associate
Email: Jessie.jones@centrisys.us
Website: www.cnp-tec.com

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