• 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

    We're proud to announce that Clearas was chosen as one of the Montana High Tech Business Alliance's "15 Montana Companies to Watch" for 2017. Congratulations to all our fellow organizations who made the cut! Click through to check out additional details on Clearas plans for the future and the full list...
  • 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...