WSSC Piscataway WRRF Bioenergy Project
Using green technology to create a regional biosolids facility.
- Location
- Accokeek, MD
- Delivery Method
- Design-Build
- Market
- Water / Wastewater
- Client
- WSSC Water
- Year Complete
- 2025
- Region
- Mid-Atlantic
Project Overview
Utilizing cutting-edge green technology, this $271 million project transforms the way WSSC handles biosolids from all five of their water resource recovery facilities, significantly reducing the volume and creating Class A biosolids to be used as fertilizer.
The project includes a cake receiving facility for imported sludge, a new 92.6 dtpd Cambi Thermal Hydrolysis Process, a combined heat and power facility, pre- and post-dewatering presses, two anaerobic digesters, and sidestream treatment. The overall process reduces operating costs by more than $3 million per year, reduces greenhouse gas emissions 15% by capturing and cleaning the digester gas to help power the facility, and produces pipeline-grade natural gas.
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Recognition
- Washington Building Congress Craftmanship Award - Power Generation, Distribution and Switchgear
- Washington Building Congress Craftmanship Award - Special Systems
$3.4M
Annual Savings in Reduced Operating Costs
3M
Gallon Anaerobic Digestion Capacity
1,000
Cubic Yard Imported Cake Storage Capacity
