| 摘要 |
Fine particles are separated from white water by the use of a disc filter, which comprises at least one rotating vertical filter disc (2), partly immersed in the white water to be separated, thereby sections (27) of the filter medium (5) of the filter disc are alternately displaced up from and down into the white water. When a section is displaced up from the white water it is covered by a cake containing fine particles which are detached in a detaching zone (16) before the section again is displaced down into the white water. According to the invention, each section is provided with a layer, solely containing fibres, in a forming zone (20) during each revolution and the section with its fibre layer is displaced through the white water in a separation zone (30), so that fine particles are deposited on the fibre layer and together with the latter form said cake. |
