Digestates resulting from methanization are characterized by their stability, their lower COD levels compared to nitrogen, and their high concentration of suspended materials.

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Treatment tends to begin with phase separation to divide the solid (spreadable) fraction and the liquid fraction.
For the liquid fraction, Ovive suggests using BIOMEMBRAT in 2 configurations:
  • BIOMEMBRAT BM30 HC: High-load biological treatment while maintaining the agronomic value in the concentrate (volume concentration by a factor of 5 to 10)
  • BIOMEMBRAT BM20/+ LC: Low-load biological treatment for full on-site treatment