The invention relates to an apparatus for the continuous preparation of a disintegrated biomass sludge, the apparatus comprising a first positive displacement pump (2), a first piping (6, 12) connecting an outlet of the first positive displacement pump (2) to an inlet of the first positive displacement pump (2) so as to form a closed loop, a first disintegration device (20) which is provided in the first piping (6, 12) and configured to disintegrate a biomass sludge supplied thereto, a second pump (14) and a third pump (16). An outlet of the second pump (14) is connected to the first piping (6, 12) and an inlet of the third pump (16) is connected to the first piping (6, 12) upstream of a position where the outlet of the second pump (14) is connected to the first piping (6, 12).
