Nutrient Recovery and Reuse (NR2) Project

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NR2 Project Elements

Biofuel storage has been installed on-site to help optimize the fuel produced for the biofuel generator and reduce energy waste

◦The Wastewater Treatment Facility has been facilitating biosolids reuse, by expanding the treatment process to produce Class A Biosolids (a fertilizer product) through the Lystek process
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​ ◦Valuable nutrients have been recovered from the wastewater centrate

Metal scaffolding, equipment, and piping inside large building
Graphic of the main elements of the NUtrient Recovery and Reuse Project

 
          Nutrient Recovery at the Wastewater Treatment Facility

Point Source Implementation Grant

The City of St. Cloud received notification in July 2017 that a reservation of 6.6 million dollars of Point Source Implementation Grant funds has been made by the Minnesota Public Facilities Authority. The grant funds will be used to recover phosphorous and produce a fertilizer product at the St. Cloud Wastewater Treatment Facility. The grant is made possible by the Clean Water Legacy Act. 


MN Public Facilities Authority Logo


Clean Water Land and Legacy Amendment Logo



Diagram illustrating nutrient recovery process

Benefits of Nutrient Recovery and Reuse

Equipment will be installed at the Wastewater Treatment Facility in order to continue and improve our production of a highly valuable, nutrient rich soil amendment for area landowners and farmers. Enhanced nutrient recovery will be accomplished by installing equipment that will produce a nutrient-rich, environmentally-friendly, fertilizer pellet product. In addition to helping improve the land by providing important fertilizers to area farms, this process will also enhance the protection of local water resources by preventing excess phosphorous from entering area waterways.

Farm equipment spreading fertilizer product on farm field