Abstract: The present invention relates to a process for operating a centrifuge which has a drive shaft used for loading, a drum which is connected to the drive shaft and has a drum casing and a drum base, a filter with a working region situated within the filter, an annular space formed between the filter and the drum casing, at least one drum base opening which is formed in the drum base and opens out into the annular space, and at least one swirl nozzle which is arranged in such a manner that it injects a fluid through the at least one drum base opening into the annular space.