Abstract: The apparatus comprises a container having a V-shaped bottom disposed at an incline. Along the apex of the V, there is positioned an auger which has an exit extending out of the container at the top of the incline. A plurality of baffles extend transversely of the auger. As a solids laden mud is introduced into the container at the lowest point of the incline, the liquid part of the mud climbs over the baffles and exits at outlets positioned toward the top of the incline while the solids become entrapped between the baffles and fall into the auger which carries them upwardly and out of the container.