Aberdeen Water Reclamation Facility Biosolids Dewatering

Location
Aberdeen, SD

Each year, the Aberdeen Water Reclamation Facility produces over 440 tons of biosolids, requiring the City to transport and land apply 12,000 gallons each day. Recent wet weather patterns have limited access to agricultural land for long periods of time. Limited liquid storage volume and increased hauling costs led the city to investigate options to minimize the impact of weather patterns and reduce operational costs. Reducing costs and increasing efficiency, the Biosolids Dewatering project in Aberdeen provided the City with new opportunities to manage the biosolids produced by the Water Reclamation Facility. Through dewatering, the biosolid volume dropped from 12,000 gallons per day to around 1,700 gallons per day. This translates to reduced hauling and storage costs all year, alongside increased flexibility for disposal.

Project Details

The City and Banner evaluated options and piloted equipment for biosolids handling and disposal. Ultimately, the evaluation recommended installing screw presses to dewater the biosolids. The dewatering process removes excess water, decreasing volume from 12,000 gallons per day to approximately 1,700 gallons per day, reducing hauling costs. Through dewatering, the city also gained the ability to haul biosolids to the landfill when access to agricultural land is limited during the winter and during wet weather patterns. These improvements increased biosolids disposal resiliency by providing operational flexibility and reducing the risk of weather-related impacts.

The project re-purposed the existing digester storage garage to house two screw presses, feed pumps, dewatered solids conveyors, polymer feed systems, polymer storage, room ventilation, electrical, and controls.

Services Provided

Facility Planning/Engineering Reports
Municipal Wastewater Treatment
Biosolids Management and Application
Supervisory Control & Data Acquisition (SCADA) Systems
Operation and Maintenance (O&M) Manuals
Operator Training
Construction Contract Administration

Support Disciplines

Wastewater

Structural

Surveying

Construction Contract Administration