| 摘要 |
In a fermentation employing microorganisms or enzymes the nutrient medium is mixed in the fermenter with a filter aid and the inoculum. After completion of the fermentation the fermentation broth is passed into a filter where it is directed through filtration elements whereby a filter cake is caused to deposit on the filtration means, which filter cake is composed of or includes the filter aid and all or a substantial part of the microorganisms or enzymes. The fermentation filtrate is then discharged while the passage of fermentation broth from the fermentor to the cake filter is suspended. A centrifugal motion is then imposed on the filter elements whereby the filter cake is loosened from the filter elements followed by recycling of the detached filter cake into the fermentor for reuse of the microorganisms or enzymes after resuming the fermentation. |
