| 摘要 |
<p>In order that the tank 2 of a sewage treatment work can be subdivided as required, an apparatus 1 is proposed which is composed of a canvas 3 which can be tightened in the manner of a drum skin in at least one direction and of elements (4', 4'', 7', 7'') engaging at the edge (3', 3'', 3''') of the canvas (3) and the edges (3', 3'', 3''') of the canvas (3) are created having means for the introduction of force, for example beam pockets (3.1', 3.1'') and pole pockets (3.2) and, as required, have sealing flaps (3.6). <IMAGE></p> |
