method and device for biological treatment of water, especially for denitrification of raw water for potable water.

摘要

Known apparatuses for the biological denitrification of drinking water require (back-)washing of the reactors from time to time. These denitrification processes therefore do not take place continuously. The invention proposes a continuously operating denitrification process with simple apparatus in which rotating submerged drum reactors (12, 14) operate in a first, anoxic biostage (10) and a second, aerobic biostage (13). The contact aerators (contact aerator segments 31) contained therein are continuously flushed, as a result of the rotation, during the treatment of the drinking water. Furthermore, the submerged drum reactors (12, 14) in both biostages (10, 13) are arranged on a common drive shaft (26) with a drive arrangement (drive motor 27). …IMAGE…