A filtration arrangement for a filtration device, wherein the filtration device has a container, and wherein the filtration arrangement has the following: a. at least two or more hollow shafts (7, 8) which are rotatably mounted in a machine frame; b. a plurality of membrane filter disks (9, 10) being disposed on said hollow shafts (7, 8); c. wherein the plurality of hollow shafts (7, 8) are assigned at least one drive device; d. wherein the discharge of permeate from the container is implementable by way of the hollow shaft (7, 8); and e. wherein each hollow shaft (7, 8) at one of the ends thereof by way of the plurality of membrane filter disks (9, 10) is introducible into the container such that said hollow shafts (7, 8) at the opposite end thereof project externally from the container; f. wherein in each case a plurality or many of the membrane filter disks (9, 10) are disposed so as to be axially spaced apart on each hollow shaft (7, 8), and the deformable spacer sleeves which axially mutually space apart the membrane filter disks (9, 10) on the hollow shafts (7, 8) are disposed between part of or all of the neighboring membrane filter disks (9, 10), g. wherein a pretension is chosen such that the spacer sleeves deform such that the internal circumference of the latter in the region of the corners, or of the largest external diameter, respectively, is pushed onto the external circumference of the non-circular hollow shafts (7, 8) such that the arrangement from axially stacked membrane filter disks (9 or 10, respectively) is tightly clamped in a rotationally secured manner on the hollow shafts (7, 8), characterized in that h. the hollow shafts (7, 8) form a polygonal external cross section, wherein the hollow shafts (7, 8) are in each case externally configured so as to be typically polygonal across the axial length on which the arrangements from axially stacked membrane filter disks (9, or 10, respectively) and from the spacer sleeves are disposed, i. wherein the spacer sleeves and the membrane filter disks are circular-shaped inside and wherein almost linear bearing regions are configured in the region of the corners between the external circumference of the hollow shafts (7, 8) and the internal circumference of the spacer sleeves and of the membrane filter disks (9, 10), wherein the axial ducts are created between neighboring linear bearing regions. a. at least two or more hollow shafts (7, 8) which are rotatably mounted in a machine frame; b. a plurality of membrane filter disks (9, 10) being disposed on said hollow shafts (7, 8); c. wherein the plurality of hollow shafts (7, 8) are assigned at least one drive device; d. wherein the discharge of permeate from the container is implementable by way of the hollow shaft (7, 8); and e. wherein each hollow shaft (7, 8) at one of the ends thereof by way of the plurality of membrane filter disks (9, 10) is introducible into the container such that said hollow shafts (7, 8) at the opposite end thereof project externally from the container; f. wherein in each case a plurality or many of the membrane filter disks (9, 10) are disposed so as to be axially spaced apart on each hollow shaft (7, 8), and the deformable spacer sleeves which axially mutually space apart the membrane filter disks (9, 10) on the hollow shafts (7, 8) are disposed between part of or all of the neighboring membrane filter disks (9, 10), g. wherein a pretension is chosen such that the spacer sleeves deform such that the internal circumference of the latter in the region of the corners, or of the largest external diameter, respectively, is pushed onto the external circumference of the non-circular hollow shafts (7, 8) such that the arrangement from axially stacked membrane filter disks (9 or 10, respectively) is tightly clamped in a rotationally secured manner on the hollow shafts (7, 8), characterized in that h. the hollow shafts (7, 8) form a polygonal external cross section, wherein the hollow shafts (7, 8) are in each case externally configured so as to be typically polygonal across the axial length on which the arrangements from axially stacked membrane filter disks (9, or 10, respectively) and from the spacer sleeves are disposed, i. wherein the spacer sleeves and the membrane filter disks are circular-shaped inside and wherein almost linear bearing regions are configured in the region of the corners between the external circumference of the hollow shafts (7, 8) and the internal circumference of the spacer sleeves and of the membrane filter disks (9, 10), wherein the axial ducts are created between neighboring linear bearing regions.