Metro Wastewater District Phosphorus Sequestration and Recovery Client: Metro Wastewater District Location: Denver, CO Hazen, in partnership with another rm, provided planning, design, and construction phase services to the Metro Wastewater Reclamation District (MWRD) on their phosphorus sequestration and recovery project at the 220-mgd Robert W Hite Treatment Facility (RWHTF). District sta have historically experienced signicant nuisance struvite precipitation in the digester complex and downstream, which has complicated plant operation and maintenance and reduced dewatering performance. Hazen coordinated with MWRD to evaluate struvite sequestration and recovery options and implement the preferred alternative.e The District piloted the Ostara’s Pearl® and AirPrexTM recovery systems to

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