| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: device serves for treating medium, particularly for treating waste water. Medium is moved along surface (3) with biological material stuck to it, where there is a scaper mechanism (5), which cleans surface (3) not entirely but along a certain path (12). The shape of the path (12) is chosen such that, the surface (3) covered with material is cleaned gradually, one part after the other. ^ EFFECT: continuous and complete exchange of material stuck to the surface, preservation of activity of the device after a long period of time, with constant hydraulic resistance. ^ 34 cl, 14 dwg |
