A filtration filter that includes a filter section having a plurality of through-holes passing through a first main surface and constructed such that objects to be filtered contained in a liquid are captured and a second main surface opposite the first main surface; and a frame section surrounding an outer periphery of the filter section, wherein a first film thickness at a center of the filter section is larger than a second film thickness of the filter section at a position closer to the frame section than the center of the filter section.

The present invention relates to comminutors for breaking down waste and, more particularly, comminutors having a screen that rotates for directing large waste particles into a cutting assembly. In addition to a rotating screen, a second, stationary screen is provided that has horizontal ribs adapted to cooperate with interleaved ribs on the rotating screen so as create a composite fine screen at an inlet end of the comminutor, while creating a coarse screen at the outlet end of the comminutor.

Provided is a filtration device that can increase a filtration treatment amount by suppressing clogging of a filtration filter. A filtration device according to the present invention includes: a filtration filter that includes a filter that filters a filtration target contained in a fluid, and a frame that holds the filter; a support structure that holds the frame such that the filter is bent; and a fluid supplying unit that supplies the fluid with the filter being in a bent state.