公开(公告)号：EP0949948B1

公开(公告)日：2001-07-11

申请号：EP96944647.5

申请日：1996-12-23

申请人： Schade, Horst, Dipl.-Ing.

发明人： Schade, Horst, Dipl.-Ing.

IPC分类号： B01D24/30 ,  C02F3/08

CPC分类号： B01D24/08 ,  B01D24/30 ,  B01D24/42 ,  B01D24/4631 ,  B01D24/4689 ,  B01D24/4869

摘要： The invention relates to a method and device for the continuous filtration of liquids containing solid matter, in particular for cleaning wastewater, by means of a filter bed consisting of a particulate filtering medium, which is continuously moved through a vertically positioned cylindrical annular space (2) through which the liquid to be filtered continuously flows radially from the interior to the exterior. The particulate filtering medium containing the separated solid matter is continuously tapped from the lower end of the annular space (2), transported to the top, freed of the filtered solid matter and fed back into the annular space (2) at its upper end. With this kind of method and device, to be able to prevent in a better and more simple manner blockages caused by the separated floc of solid matter, the invention provides that as particulate filtering medium a particle mixture is used with a particle-size range comprising two or more particle sizes, ranging from coarse (2.5 mm) to fine (0.4 mm) and that this particle mixture is classified and distributed before or during feedback into the annular space (2) in such a way that the particle size in the load of the filter bed becomes smaller in a radial direction moving from the inside to the outside.

公开(公告)号：EP0650389B1

公开(公告)日：2000-07-26

申请号：EP93911035.9

申请日：1993-05-04

申请人： Andritz Inc.

发明人： WARD, Stephen, Daniel

IPC分类号： B01D24/30

CPC分类号： F04F5/466 ,  B01D24/30 ,  B01D24/4689 ,  F04F5/24

摘要： A deep bed upflow filter (10) for removing suspended solids from an influent stream to provide a clean filtrate, comprising an upright vessel (12) having a vertical axis (14), top and bottom ends (16,18) and contiguous upper (20), lower (22), and intermediate (24) regions between the ends. The upper region contains filtrate (26) up to a first elevation (28) and an outlet (30) for drawing the filtrate out of the vessel. The intermediate region contains particulate filter media (32) for removing the suspended solids from influent moving upwardly through the media as the media, dirtied with solids, moves downwardly into the lower region. The lower region is generally tapered (36) inwardly toward the vessel bottom and contains dirty media (34) that has moved downwardly from the intermediate region. Influent is introduced (44) between the intermediate and lower regions, and the dirty media is collected (46) at the bottom and transported (50) to a regenerative washing compartment (52). A portion of the reject flow (64 ) from the wash compartment is delivered (72,74) to the dirty media in the lower region of the vessel and another portion (72,78) is delivered to the area (46,48,50) where the dirty media is collected and transported. This latter portion is preferably introduced into a collection conduit (46) through a pipe (130) having a concentric inner tube (140) by which air is injected to fluidize and move the mixture of air, dirty media, and reject water in the conduit (46) toward an airlift (48,148).

摘要翻译： 一种用于从进水流中除去悬浮固体以提供清洁滤液的深床上流式过滤器（10），包括具有垂直轴（14），顶端和底端（16,18）和邻接的上（上） 20），下部（22）和中间（24）区域之间。 上部区域含有直至第一标高（28）的滤液（26）和用于将滤液抽出容器的出口（30）。 中间区域含有微粒过滤介质（32），用于除去进口中的悬浮固体，向上移动通过介质，随着被固体弄脏的介质向下移动进入下部区域。 下部区域通常朝着容器底部向内逐渐变细（36）并且容纳已经从中间区域向下移动的脏介质（34）。 在中间区域和下部区域之间引入流入物（44），并且在底部收集（46）脏介质并将其运送（50）到再生洗涤室（52）。 将来自清洗隔室的一部分排斥流（64）输送到容器下部区域中的脏介质（72,74），并将另一部分（72,78）输送到区域（46,48,50） ）脏媒体被收集和运输的地方。 后一部分优选通过具有同心内管（140）的管（130）引入到收集导管（46）中，通过该管（130）注入空气以使空气，脏介质和排斥水的混合物流动并移动到导管 （46）朝向空运（48,148）。