Largest Nutrient Recovery Facility Opens in Oregon
By Jay Landers
The advanced wastewater treatment facility removes phosphorus and nitrogen from the liquid stream, helping the plant comply with permits. The nutrients are then converted into a revenue-generating fertilizer ingredient.
In early May, Clean Water Services, of Hillsboro, Oregon, formally unveiled the world’s largest nutrient-recovery facility employing the Pearl process developed by Ostara Nutrient Recovery Technologies, Inc., of Vancouver, Canada. Located at the Rock Creek Advanced Wastewater Treatment Facility, the nutrient-recovery plant removes phosphorus and nitrogen from the liquid stream generated during the solids-handling process and converts the nutrients into a valuable fertilizer product. In this way, the new installation is expected to help the Rock Creek facility comply with its strict discharge limit for phosphorus while simultaneously providing a revenue source for Clean Water Services, a water resources management utility outside of Portland.