Continuous Process
Plug Flow Operation
Anaerobic Digestion with Plug-Flow Digesters
The continuous process takes place in large plug-flow fermenters, in which the material is fermented in the form of a thick slurry.
Operation with Plug-Flow
The continuous process utilizes the plug-flow principle and can be fully automated:
Material Infeed
Fresh material is fed into the digester via a gas-tight screw feeder, where it is immediately inoculated by the partially digested material already inside. Inside the digester, paddle agitators continuously mix the material to stimulate biogas production and prevent layering.
Constant Material Flow
At the opposite end of the elongated digester, a pumping system removes the digested material at regular intervals. Because the input and output are located at opposite ends, the fresh material naturally moves through the system—from the inlet to the outlet—completing its digestion process along the way.
Steady Energy Generation
This design enables continuous biogas production and ensures the system is base-load capable, making it highly reliable for steady energy generation.
The Process
A. · Digester unit · B. Dewatering hall · 1. Gas-tight feeding screw · 2. Paddle agitators · 3. Agitator drives (outside) · 4. Substrate level · 5. Headspace · 6. Gas venting connection · 7. Discharge piping · 8. Digistate pumping system · 9. Dewatering presses
Innovative Design for Maximum Performance
The continuous anaerobic digestion process delivers maximum biogas yield while maintaining very low energy consumption, resulting in an exceptional energy balance. Despite its high level of automation, the system is both robust and user-friendly, making it easy to operate and maintain.
From Biogas to Compost or Stabilization
After anaerobic digestion, the material is transferred to a composting process for post-treatment—such as a membrane, lane, or tunnel system. Depending on the input material, the digestate is either composted or stabilized.
The natural composting process generates enough heat to sanitize the material, eliminating pathogens and producing a safe, high-quality final product.
Fertilizer Production (Biowaste)
The digestate can be further processed into high-quality compost, while the percolate can be collected and sold as liquid fertilizer.
Contact Person
Ignacio Benitez
Phone: +1 8056561409
ignacio(at)eggersmann-recycling.com