| 摘要 |
<p>Disclosed is a biological purification device (1) for biological purification of water. The purification device comprising a filtering tank (2) for holding the water and a plurality of individual filtering elements (3) floating in the water in the filtering tank (2), wherein the filtering elements (3) forms a floating filtering bed (4). The biological purification device (1) also includes one or more injector tubes (5) comprising injector means (6) arranged at a top surface (7) of the floating filtering bed (4) and the injector tubes (5) also includes tubular guide means (8) extending from the injector means (6) and downwards through the floating filtering bed (4). The injector tubes (5) also comprises pump means (9) for creating an injector flow from the injector means (6) and down through the tubular guide means (8), wherein the tubular guide means (8) comprise one or more inlet openings (10) for allowing the injector flow to draw filtering elements (3) directly into the tubular guide means (8) from the floating filtering bed (4) and wherein the inlet openings (10) are arranged at the injector means (6). A method for cleaning individual filtering elements (3) and use of a biological purification device (1) is also disclosed.</p> |
