When the turbid liquid was fed into the high-speed rotating drum, it enters the disc stack along the channel, under the strong centrifugal force, the multi-components with different densities form three dynamic concentric rings: a small amount of solid particles with the greatest density move outward and accumulate on the wall of the drum to form the outermost layer; the denser heavy phase liquid is thrown onto the lower surface of the disc and slides down out of the disc area to form an intermediate layer; the denser light phase liquid moves toward the center of the drum to form the innermost layer. Then, the three components are discharged from the drum by their respective channels.