The Metropolitan Water Reclamation District (MWRD) of Greater Chicago, in partnership with Ostara, launches World’s Largest Nutrient Recovery Facility
May 25 marked the official unveiling ceremony to celebrate the completion of the world’s largest nutrient recovery facility at the MWRD’s Stickney Water Reclamation Plant.
By reclaiming phosphorus from the nutrient rich water streams at the Stickney Water Reclamation Plant and transforming it into a high-value, eco-friendly fertilizer sold as Crystal Green®, Ostara’s technology provides MWRD with a closed-loop solution to nutrient management.
ROBERT F. KENNEDY, JR.
Ostara Board Member, Environmental Advocate & Attorney
President of the MWRD Board of Commissioners
DAVID ST. PIERRE
Executive Director of the MWRD of Greater Chicago
ROBERT A. KAPLAN
Acting Regional Administrator, U.S. Environmental Protection Agency Region 5
Deputy Mayor of Chicago
President & CEO, Ostara
The MWRD’s Stickney WRP Nutrient Recovery Facility official ribbon cutting on May 25, 2016.
From left: Robert A. Kaplan, Acting Regional Administrator, U.S. Environmental Protection Agency Region 5; Frank Avila, Chairman of Finance, the MWRD Board of Commissioners; Phillip Abrary, President and CEO, Ostara; David J. Walsh, Commissioner, the MWRD Board of Commissioners; Barbara J. McGowan, Vice President, the MWRD Board of Commissioners; Mariyana Spyropoulos, President, the MWRD Board of Commissioners; Robert F. Kennedy, Jr., Ostara Board Member, Environmental Advocate & Attorney; Steven Koch, Deputy Mayor of Chicago; David St. Pierre, Executive Director, MWRD; Kari K. Steele, Commissioner, the MWRD Board of Commissioners.
THE OSTARA SOLUTION
THE PEARL PROCESS
- The Pearl process recovers up to 85% of phosphorus and 15% of nitrogen from Stickney’s treatment streams before they accumulate as struvite in the pipes.
- Ostara’s proprietary technology is based on controlled chemical precipitation in a ﬂuidized bed reactor.
- Nutrient-rich feed streams are mixed with magnesium chloride and sodium hydroxide and then fed into the Pearl reactor where minute particles or struvite “seeds” begin to form.
- Like a pearl, nutrients (phosphorus with nitrogen and magnesium) grow in diameter until they reach the desired size- suitable for sale in fertilizer blends for agriculture, turf and horticulture markets.