| 摘要 |
The invention relates to a process for the preparation of metabolic products using microorganisms in aqueous medium, which is particularly suitable for biological purification of waste water, to a bioreactor (10, 14) for carrying out this process, and to a multistage biological waste-water purification plant with at least one of this type of bioreactor (10, 14). The microorganisms are exposed in the bioreactor (10, 14) to mechanical stress, which does not lead to their dispersion but significantly increases their metabolic rate. Several embodiments of bioreactors (10, 14) are indicated, in which the microorganisms are activated by supplying energy via the aqueous medium. The multistage waste-water purification plant has at least one stage with a bioreactor (10, 14) suitable for activating the microorganisms. This makes it possible greatly to reduce the residence time of the substances to be converted in the bioreactor (10, 14) and in the waste-water purification plant. <IMAGE>
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