The Fixed Dome-Shaped System

Concrete, steel or fiberglass dome

The digester itself is a sealed chamber where organic waste undergoes anaerobic digestion, producing biogas and nutrient-rich digestate. The gas collects in the upper portion of the dome, displacing digestate into a separate storage tank.

Key Features:

• High durability: Fixed dome systems are typically built to last 30 years or more due to their robust construction materials.
• Large capacity: These systems offer larger capacities, catering to farms, businesses, and communities with higher organic waste volume.
• Internal gas storage: Biogas is stored within the dome itself, simplifying gas handling and potentially offering higher pressure for larger applications.
• Relatively high cost: Due to complex construction and materials, fixed dome systems have a higher initial investment compared to other options.

Applications:

• Large-scale farms and agricultural operations generating significant organic waste.
• Industrial facilities or communities with high waste production and energy demand.
• Remote locations where readily available skilled labor and materials for alternative systems might be limited.