Abstract: A centrifugal cleaning apparatus having a centrifuge bowl rotated on a vertical axis at high velocity with a circular opening in the top for clean liquid to be discharged into a surrounding liquid containment bowl. An accelerator is mounted in the bottom of the bowl for receiving contaminated liquid in the center of the accelerator and causing that liquid to be accelerated radially and rotationally into the centrifuge bowl. The centrifugal forces cause particulate material to be deposited on the vertical interior wall of the centrifuge bowl while the liquid flows from the bottom of the bowl to the outlet opening at the top in an annular column of liquid. The clean liquid is removed from the containment bowl and the collected particulate material is periodically removed from the centrifuge bowl.