| 摘要 |
<p>The present invention relates to a dewatering device (1) for batchwise separation of liquid from particle-laden sludge (20), the dewatering device (1) comprises a closed, downwards openable container (2) having at least one liquid-pervious wall (10), the container (2) being arranged to be filled with said sludge (20) during a filling phase, a bladder (6) located centrally inside the container (2), the bladder (6) is adapted to be filled with a fluid, and a valve system (7) for controlling the pressure of the fluid inside the bladder (6), wherein compression of the bladder (6) is prevented by having the valve system (7) adapted to maintain an overpressure of the fluid inside the bladder (6), in relation to the surrounding pressure, in use of the dewatering device (1) during said filling phase. Further present invention relates to a method for separation of liquid from particle-laden sludge using a dewatering device (1) which comprises a container (2), and a bladder (6) located centrally inside the container (2).</p> |
