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Welcome to CNP

Introducing AirPrex®

A Complete Solution of the Struvite Problem
 
Is This What Your Plant's Pipe Look Like?
Without intervention, struvite blocks your pipes and puts a hefty burden on your bottom line

Greentec Award 2015

Berliner Pflanze gewinnt als mineralischer Phosphor
Dünger in der Kategorie Recycling & Ressourcen

The Problem

Struvite Mineral Buildup Causes Reduced Wastewater Treatment Plant Capacity

In wastewater treatment plants with biological phosphate elimination, high phosphate concentrations occur in the digester’s anaerobic environment.

As a result, struvite (or MAP: magnesium ammonium phosphate) builds up inside the pipes, pumps and process equipment, causing problems including:

  • Reduced plant capacity due to decreased flow through
    the digester’s pipes
  • Reduced dewatering efficiency due to increased water
    bounding effects in the sludge by high phosphate levels
  • Increased phosphate loads in the return liquor, which
    leads to a less efficient phosphate-elimination process
    and causes crystallization problems in pipes and pumps

Our Solution

How AirPrex® Optimizes the Sludge Treatment Process Like No Other System

Until now, the main methods of struvite removal have been:

  • Costly, recurring chemical treatments
  • Phosphorus removal after dewatering

 

Unlike these other systems, AirPrex® is a complete sludge optimization and phosphorus recovery system that’s installed between anaerobic digestion and dewatering. The boundary conditions for struvite precipitation are set by air stripping in the AirPrex® reactor and the addition of a magnesium chemical product. This combination of biological phosphate elimination and the AirPrex® system achieves unrivaled effectiveness in terms of wastewater dewatering efficiency and cost savings.

Read more about the process in WE&T magazine

Benefits

AirPrex® Removes Struvite while Significantly Improving Efficiency

The AirPrex® process has been designed to produce maximum return on investment and make a significant impact on your treatment plant’s cost of operations. The elimination of struvite through this unique process leads to a 90 to 95 percent phosphate reduction in the returned liquor (up to 15 percent related to the incoming P-load).

Reduce Polymer by up to 30%

By optimizing the sludge and removing most of the phosphate before dewatering, the water bounding effect of the phosphate is mitigated before dewatering. As a result, the dewatering process is more efficient and less polymer is required.

Reduce Disposal Costs by up to 20%

By optimizing the sludge and removing most of the phosphate before dewatering, the dewatering process is more efficient, allowing for drier cake solids.

Reduce Phosphorus Recycle Load by up to 90%

Eliminating the majority of the P-recycling load increases the overall efficiency of the biological treatment process.

Reduce Maintenance Costs by up to 50%

With the AirPrex® struvite removal process, pipe treatment and repairs are minimal to maintain the desired capacity of the digester pipes.

Hide Increase Revenue up to 10% from Fertilizer

In addition to removing struvite, you can also resell the high-phosphate dry solids as fertilizer.

Learn More +

About CNP

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.

Germany

Rudolf Bogner
Chief Executive Officer

Rudolf Bogner has been working in the field of wastewater/water since 1995 and in sludge treatment since 2001. Previously, he held numerous positions as R&D engineer, sales engineer, President of a U.S. corporation, Director of a Biosolids division and Vice President of business development.

Bernhard Ortwein
Chief Technical Officer

Bernhard Ortwein has been working in the field of waste and wastewater treatment as well as in the field of sludge treatment since 1998. He has gained experience as sales engineer, branch manager, project engineer and product and process manager. Experienced in both national and international projects…

North America

Gerhard Forstner
President

Gerhard Forstner has been working in the field of wastewater/water and sludge treatment since 2001. He has gained valuable knowledge in the industry, having worked as an application engineer, project manager, Regional Sales Manager, President of a U.S. corporation and CEO of a start-up company.

Other countries

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CONTACT

CONTACT

Your partners at CNP can easily incorporate this value-producing technology into your operation in any plant setting, including
retrofitting it to your existing infrastructure. Contact us today to get started.
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NORTH AMERICA
cnp-Technology Water and Biosolids Corp.
9535 58th PlaceKenosha, WI 53144
Phone: +1 262 764 3651
Fax: +1 262 764 8705
Email: info@cnp-tec.com
Germany
CNP-Technology Water and Biosolids GmbH
Industriestraße 22A | 21493 Schwarzenbek
Phone: +49 4151 89623-0
Fax:+49 4151 89623-29
Email: info@cnp-tec.com