| 摘要 |
<p>The invention relates to a process and a device for the biological purification of sewage using active biomass in the form of suspended and/or sessile microorganisms and using oxygen from the ambient air involving the application of a submersible wheel (2). In order to improve efficiency, the ambient air is introduced into the interior(19) of the submersible wheel (2) and directed in such a way that at least a part of the mixture formed of the biomass containing microorganisms, or of the sewage or clarified liquid and ambient air moves together with the ambient air in the form of trapped air bubbles as a rotating, circulating flow relative to the submersible wheel(2).</p> |
