Anaerobic digestion plant for effluent able to undergo a methanization process by fluid phase

The present invention is in the technical field of treatment of anaerobic digestion and relates to a treatment plant effluent capable of undergoing a methanisation using a liquid, or fluid. The digestion device (100) according to the invention is characterized in that it comprises a plurality of digestion modules (101, 102, 103) interconnected by a circulation means (104) of the liquid phase of the effluent to be treated.