Nutrient Recovery Solutions

Our nutrient recovery solutions reclaim phosphorus and nitrogen from wastewater to both improve water quality and produce a sustainable phosphate fertilizer, Crystal Green Pearl®. 

Ostara Nutrient Solutions
Ducks in algae bloom

The Challenge with Nutrients

When nutrients aren’t managed properly and enter local waterways they can feed algae blooms that harm the environment. 

Crystal Green Pearl in hand

Turning Nutrient Challenges into Opportunities

We view the nutrients in wastewater as a valuable source of renewable phosphate and nitrogen that are waiting to be recovered. That’s why we’ve developed our nutrient recovery solutions to sustainably recover these nutrients for use as high-value granular phosphate fertilizers while also removing unwanted nutrients from water discharges. 

Tech Icon1 Efficiently recover
renewable phosphorus
Home Icon2 Conserve and protect
water resources
Home Icon3 Cost-effectively solve
operational challenges
Home Icon1 Create a revenue
stream

How Ostara’s Nutrient
Recovery Solutions Work


PEARL®

TRANSFORMS NUTRIENTS INTO FERTILIZER

The core of Ostara’s comprehensive nutrient management solution is the Pearl system, a fluid bed reactor designed for efficient removal of phosphorus and recovery of a high-purity fertilizer product. 

HOW IT WORKS:

  • Nutrients crystallize into highly pure fertilizer granules, in a controlled pH environment.
  • Granules are harvested, dried and shipped offsite.
  • Fertilizer is marketed and distributed as Crystal Green Pearl®.
How Pearl Reactor Works

Wasstrip digester

WASSTRIP®

SUPPORTS FACILITIES USING ANAEROBIC DIGESTION

WASSTRIP (Waste Activated Sludge Stripping to Remove Internal Phosphorus) is a value-add option for Pearl systems, providing critical benefits to facilities operating anaerobic digestion.

HOW IT WORKS:

  • Phosphate is released and bypassed upstream before entering the digester.
  • Nutrient recovery is turbocharged, increasing recovered fertilizer production by controlling struvite in the Pearl reactor and not in the digesters.
  • Digesters and equipment are protected from unwanted struvite formation.
  • Dewaterability is improved and biosolids volume is reduced.

23
Commercial installations
worldwide

Nutrient Recovery Facility

Discover Our Sustainable Fertilizer

Our Crystal Green Pearl fertilizer consists of phosphate, nitrogen and magnesium reclaimed from wastewater systems, helping to solve nutrient management challenges. 

View Product


Location Map

Learn How Global Communities Benefit from Nutrient Recovery Solutions

Recover nutrients in your wastewater treatment facility to convert phosphate into a sustainable, high-efficiency fertilizer, while also reducing operational costs and improving your environmental footprint. 

Learn More

Join the Growing Nutrient Recovery Movement

When using Ostara solutions to recover a valuable resource, you partner with your community and farmers to support our collective future. The phosphorus we recover into sustainable Crystal Green Pearl phosphate fertilizer provides a guaranteed revenue stream while improving your environmental footprint. 

Contact Us

Featured News

Evoqua Water Technologies Partners with Ostara to Expand Access to Nutrient Recovery Systems 

In September 2021, Ostara and Evoqua announced a new partnership to share nutrient recovery technology through Evoqua’s marketing, sales, and project delivery resources. In this partnership with Ostara, Evoqua gains access to the most established technologies in the rapidly growing nutrient recovery market, while also enhancing many of the established Evoqua technologies that complement Ostara solutions. 

Through this license agreement, Evoqua will sell and deliver nutrient management systems using Ostara’s Pearl® and WASSTRIP® wastewater treatment technologies across North America and Europe. 

Explore how Ostara and Evoqua will be implementing this technology in a community near you. 

Learn More