The solid-wall bowl has a cylindrical section for efficient clarification of the liquid and a conical section for drying the solids. Due to the centrifugal forces, the solids are flung onto the bowl wall and are transported by the scroll to the solids discharge. There are several possibilities to discharge the clarified and separated heavy and light liquid phases. Both phases can either be discharged freely by gravity or one liquid phase is discharged under pressure via centripetal pump while the other liquid phase flows off under gravity. The decanters are completely CIP-compatible.