| 摘要 |
<p>Described herein is a device for obtaining biomass from an organic sewage having a liquid fraction and a solid fraction, particularly a sewage of zootechnic origin. The device (1) has a load-bearing structure substantially shaped like a tower (2), with an upper tank (4) for inlet of the sewage and a lower tank (6) for collecting the liquid fraction of the sewage. The structure (2) defines, between the top tank (4) and the bottom tank (6), a flow-path (7) along which the sewage can flow. Along the flow-path (7) are sequentially housed a plurality of drawer containers (3a-3e), each of which has a bottom provided with openings of dimensions such as to withhold a flaking material that constitutes a corresponding filtering mass. The drawer containers (3a-3e) extend substantially parallel to one another in a direction transverse to the flow-path (7) and stacked on top of one another for being traversed sequentially at least by the liquid fraction of the sewage. The drawer containers (3a-3e) can be slid out of the structure (2) to enable removal and replacement of the filtering masses each time saturated, as well as the variation of the position in height of the drawer containers (3a-3e) within the flow-path (7).</p> |
