• Biological & Sustainable
    Enhanced nutrient recovery wastewater treatment solution that outperforms chemical options

  • Modular & Scalable
    Enhanced nutrient recovery wastewater treatment solution designed to grow with customer needs

  • Competitive Economics
    Enhanced nutrient recovery wastewater treatment solution with competitive economics at ENR levels

The Clearas ABNR Solution

Clearas Advanced Biological Nutrient Recovery (ABNR™) system is a controlled and continuous flow environment that leverages a facility’s existing microbiology – algae and other biological organisms – to recover excess phosphorus, nitrogen and other high-profile contaminants in wastewater.

An extension of the activated sludge process, our patented ABNR system is a bolt-on and modular solution that scales as your needs grow – seamlessly integrating into your existing wastewater treatment infrastructure.

To learn more about the ABNR™ process, view our overview video.

  • 10X reduction in phosphorus to below-ENR levels
  • 3X reduction in nitrogen to below-ENR levels
  • Multi-constituent remediation
  • Competitive total cost of ownership
  • Modular and scalable design
  • Sustainable, biological and chemical-free

How It Performs

Achieving lower levels than any other solutions, Clearas reduces phosphorus by an average of 93% and nitrogen by an average of 33% from influent to effluent for our municipal and industrial clients at ENR levels.

About Clearas

Founded in 2008, Clearas Water Recovery is a team of engineers, innovators and problem solvers experienced in both startup and Fortune 500 companies. We design, build, and operate next-generation ABNR solutions that deliver the highest quality wastewater treatment to our partner-clients at the lowest total cost of ownership. We are dedicated to ensuring that our partner-clients succeed, and are backed by a network of strategic advisers that provide expertise in engineering, biological processes, and systems management.

News / Resources

  • Recent News

    Hoover, AL – With tighter regulations looming for nutrient limits in the Cahaba River, a new wastewater technology pilot program of Clearas Water Recovery’s Advanced Biological Nutrient Recovery (ABNRTM) system recently began at Riverchase WWTP...

  • Upcoming Event

    Tuesday, March 28, 2017 to Friday, March 31, 2017
  • Industry Article

    Clearas is featured in the Summer, 2016 edition of Influents, the official publication of the Water Environment Association of Ontario. The article, which appears on pages 61-63, and is titled Nutrient Reduction Through Use of an Advanced Biological Nutrient Recovery Process, describes how the...