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Nutrient Recovery from Wastewater

Manage and recover nutrients like phosphorus and nitrogen from wastewater

Wastewater typically contains a large amount of nutrients, including phosphorus and nitrogen. If not properly managed, these nutrients can pose a threat to infrastructure and the environment leading to issues such as  eutrophication in waterbodies and a buildup of struvite in mechanical systems. Wastewater treatment plants can mitigate these challenges with a nutrient recovery process that can improve water quality and meet stringent discharge limits by converting discarded phosphorus into an environmentally friendly fertilizer needed to grow food.

Nutrient recovery is a sustainable approach to wastewater management by recovering nutrients from where they shouldn’t be - in our waterways and transforming them into high-performing fertilizers. This approach is proven to increase yields while reducing runoff and non-point source pollution.

Nutrient recovery contributes to the social, environmental, and economic benefits of a circular economy

Ostara’s Pearl® System, offered by Evoqua Water Technologies, is helping deliver an innovative wastewater nutrient recovery solution that harvests nutrients from wastewater and transform them into an eco-friendly fertilizer. This approach is both innovative and sustainable providing communities and industries around the world with a process to manage valuable nutrients while meeting strict phosphorus discharge limits. 

Did you know?
Ostara's Pearl® system by Evoqua can remove up to 85% of Phosphorus (P) and 40% of Nitrogen (N) from the reactor feed.

The Pearl® System

The Standard in Nutrient Recovery

Ostara’s Pearl system by Evoqua is a fluidized bed reactor designed to recover phosphorus from municipal and industrial waste streams though the controlled precipitation of crystalline struvite.  Within the Pearl system reactor, the growth of struvite (magnesium ammonium phosphate) is facilitated by the addition of magnesium in a controlled pH setting. This allows nutrients to crystallize into eco-friendly fertilizer granules, which are harvested, dried, and then distributed and sold by Ostara as Crystal Green® Fertilizer.

Learn MoRE

Note: Ostara, Pearl, and Crystal Green are trademarks of Ostara Nutrient Recovery Technologies, Inc., used under license.

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