A mobile solids control system for the processing of drilling fluids. The solids control system includes a suction tank skid, a suction platform skid, a shaker tank skid, and an equipment platform skid. The suction tank skid and shaker tank skid include the drilling fluid storage tanks, pumps to effectuate the flow of fluid through the system, and agitators to circulate fluid within the tanks. The pumps are preferably centrifugal pumps mounted vertically within notches or recesses built into the sides of the tank skids. The suction platform skid and the equipment platform skid are installed on top of the tank skids, and include solids control equipment used to process the drilling fluid.