South Davis Nutrient Recovery

Projected Completion 2019

Client South Davis Sewer District

Cost $36.5 Million

Type Resource Recovery

The South Davis Sewer District South Plant is upgrading because it has been 25 years since its last upgrade. In addition, new UPDES permit requirements exceeded its ability to treat for Ammonia and Phosphorus, and the Wasatch Resource Recovery project being constructed just to the north of the plant s going to discharge additional nutrients to the plant for further treatment. After a thorough study, the District decided to use the ClearAs Water Recovery process wherein 140 miles of 4 inch glass pipe in a 200 ft. X 450 ft. greenhouse will grow algae to recover the carbon, nitrogen, and phosphorus via microalgae which is in turn harvested, dewatered, dried, and sold. In addition to this, the facility is also upgrading its electrical / control / Telemetry system, adding a biosolids dewatering facility, upgrading its anaerobic digesters, adding an operations building, and upgrading its headworks.