Tres Rios Water Reclamation Facility Nutrient Recovery | HDR’s Wastewater Project Honored with 2020 Design-Build Institute of America Award
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HDR’s Wastewater Project Honored with 2020 Design-Build Institute of America Award

The Design-Build Institute of America recognized the Tres Rios Wastewater Reclamation Facility Nutrient Recovery Project in Arizona with the 2020 Design-Build Project/Team Award.

Evaluated by a distinguished panel of design-build experts, the award-winning projects were selected from among the largest and most diverse group of entries DBIA has received in many years.

The Tres Rios Water Reclamation Facility is the centralized biosolids processing facility for Pima County’s eight WRFs. In addition to cleaning wastewater, this project involved designing and constructing a nutrient recovery facility to reduce operations and maintenance costs — specifically the capture of phosphorus as struvite which has a market value as a fertilizer additive. HDR provided progressive design-build services for an approximately $6 million struvite sequestration system to reduce struvite formation potential, reduce ferric acid and polymer use and improve the dewaterability of the solids handling process. 

Extensive collaboration among stakeholders and a thorough, responsive design resulted in expedited construction with few unknowns and limited need for contingency.

The Merit Award winners will now compete for a National Award of Excellence and Project of the Year, to be announced at DBIA’s Design-Build Conference and Expo Awards Ceremony, Oct. 29.