Solid-liquid separation equipment and separation method

The invention relates to solid-liquid separation equipment and a solid-liquid separation method, and relates to the technical field of underground coal mine water treatment equipment.The solid-liquid separation equipment comprises a first-stage separation device and a second-stage separation device, and the first-stage separation device and the second-stage separation device are distributed in tandem in the length direction of a ditch; each of the first-stage separation device and the second-stage separation device comprises separation supporting frames supported on the two sides of the ditch, rotating wheels vertically and rotatably connected to the separation supporting frames and filter screen plates circumferentially arranged on the portions, close to the peripheries, of the rotating wheels at intervals, and filter holes are evenly formed in the filter screen plates; the filter screen plate extends into the ditch and filters mine water in the ditch when rotating to be close to the bottom along with the ro