Fine Chemicals
3 min read

New bio-fermentation plant for Ecoson

Ecoson, a subsidiary of Darling Ingredients, processes waste flows from the food industry to convert them into renewable energy. The company already has a processing unit for waste flows in the Dutch town of Son, but also wanted to service its Belgian customers with a local facility. Ecoson came to Agidens for the engineering, construction, automation, and commissioning of a new bio-fermentation plant at its Denderleeuw site.


Ecoson is a European bio-digestion specialist and pioneer in the production of renewable gas and electricity, biofuels, and organic, phosphate-based fertilizers in accordance with a zero-waste philosophy.

The brand-new bio-fermentation plant in Denderleeuw (East Flanders) processes organic waste as a raw material to produce renewable energy. The final product of this fermentation process is methane gas that fires two (1500 kW each) Combined Heat & Power (CHP) units to produce green electricity and heat. This can power nearly four-thousand Belgian households. The remaining waste product is a dry powder that is used in the cement industry.



Ecoson found in Agidens a turnkey partner for the software, mechanical and E&I engineering, automation and commissioning of the fermentation plant.  Ecoson took care of the process engineering and the purchase of a number of package units (Belt dryer, Biogas engine, Decanters, Filtration, Gas scrubber, Membrane bioreactor).

Based on the process concept and the associated P&IDs, Agidens provided the missing elements such as valves, pumps, instrumentation, piping, electrical cabinets, and the transformer.


  • Software Engineering
  • Mechanical Engineering
  • E&I Engineering
  • Safety engineering
  • Construction (Mechanical, E&I)
  • Automation/System integration
  • Testing & Commissioning
  • Maintenance & Service Support


“From the very start of the project, Agidens’ strength was shown to be their multi-disciplinary approach and in-depth knowledge in all disciplines. They were also flexible throughout the entire project and solved any issues quickly and efficiently. Ecoson was looking for a reliable turnkey partner and we are sure we found that in Agidens”.

Jo Smaers Process and Project Manager Ecoson at Darling Ingredients
Ecoson Denderleeuw


  • Flexibility to build on Ecoson’s existing process concept.
  • Installation of the co-generation transformer.
  • Programming of Wonderware (Schneider Electric) SCADA package on Siemens TIA Portal PLC.
  • Very short lead time with a 7-month deadline for the start of Phase 1.



  • The new bio-fermentation plant is the first of its kind in Belgium and guarantees a more flexible service for Ecoson’s customers. The first co-generator already provides very high efficiency, which makes the ROI from this project extremely short.
  • The steam generated is used at sister company Rendac, and the electricity is fed back to the grid, saving a considerable amount of fossil fuels.
  • In a second phase, another fermenter with co-generation was commissioned for even higher efficiency.

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