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1.发明授权
公开(公告)号：EP0755292B1
公开(公告)日：1998-10-14
申请号：EP94917353.8
申请日：1994-05-12
CPC分类号： B01D24/24 , B01D24/4631
摘要： An apparatus and method for gas backwashing a granular media supported upon a lateral underdrain is disclosed. The lateral underdrain includes a plurality of dispersion apertures therethrough and at least one liquid return conduit extending to a discharge at a level below the dispersion apertures. The present invention provides for equal distribution of backwash gas across the entire lateral underdrain by directing backwash gas through the dispersion apertures into the granular media and directing liquid from the granular media through the liquid return conduit without obstructing backwash gas flow through said apertures from a gas pocket formed underneath said apertures.
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公开(公告)号：EP0507414A3
公开(公告)日：1993-03-24
申请号：EP92200933.7
申请日：1992-04-01
CPC分类号： B01D24/24 , B01D24/4631
摘要： A cap (18) for filter underdrain blocks (16) is provided, wherein the cap has a porous body (36) with a top surface (38), a bottom surface (40) and downwardly extending flanges (50). The cap is installed on a filter block (16) having a plurality of orifices (34) in a top wall (24) of the filter block for channelling fluids to and from an overlying filter media. The bottom surface of the cap along with the flanges define a distribution chamber above the orifices, and the cap has a porosity such that a fine grain filter media may be placed directly on the top surface of the cap without media penetrating therethrough and clogging the underdrain blocks. The distribution chamber enhances distribution of backwash fluids throughout the filter media, and the cap eliminates the need for a separate gravel support layer to be installed between the fine grain filter media and the underdrain blocks.
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3.发明授权Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in filter underdrain flumes 有权的直流扫气期间的设备用于在过滤器暗渠系统的气体和液体的分配
公开(公告)号：EP0933111B1
公开(公告)日：2008-02-27
申请号：EP99300636.0
申请日：1999-01-28
CPC分类号： B01D24/24 , B01D24/4631 , B01D2201/48
摘要： A concurrent backwash distribution apparatus for a filter (11) having a filter tank (13) and a plurality of underdrain laterals (24) includes a baffle (10) positioned in a common main conduit (12) to define an auxiliary flume (14) between the baffle (10) and the underdrain laterals (24). The auxiliary flume (14) is in fluid communication with the common main conduit (12) and the underdrain laterals (24). The baffle (10) has at least one flume liquid metering orifice (16) preferably located near the bottom of the baffle (10) so that it may be below a gas/liquid interface in the auxiliary flume (14) during concurrent gas/liquid backwash operations. A flow distribution plate (18) may be positioned between the auxiliary flume (14) and the underdrain laterals (24), the flow distribution plate (18) having at least one liquid metering orifice and at least one gas metering orifice. The baffle (10) may take one of many forms. The baffle (10) creates an adequate liquid pool in the common main conduit for low velocity flow of backwash liquid while at the same time providing uninhibited flow of backwash gas. Maldistribution is thereby controlled. Stand-pipes (35) may be used in place of the baffle (10). A method for concurrent gas/liquid backwash according to the invention is also disclosed. The invention may be applied to flat bottom flumes or insufficiently recessed flumes.
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4.发明公开Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in filter underdrain flumes 有权的直流扫气期间的设备用于在过滤器暗渠系统的气体和液体的分配
公开(公告)号：EP0933111A3
公开(公告)日：2002-01-02
申请号：EP99300636.0
申请日：1999-01-28
CPC分类号： B01D24/24 , B01D24/4631 , B01D2201/48
摘要： A concurrent backwash distribution apparatus for a filter (11) having a filter tank (13) and a plurality of underdrain laterals (24) includes a baffle (10) positioned in a common main conduit (12) to define an auxiliary flume (14) between the baffle (10) and the underdrain laterals (24). The auxiliary flume (14) is in fluid communication with the common main conduit (12) and the underdrain laterals (24). The baffle (10) has at least one flume liquid metering orifice (16) preferably located near the bottom of the baffle (10) so that it may be below a gas/liquid interface in the auxiliary flume (14) during concurrent gas/liquid backwash operations. A flow distribution plate (18) may be positioned between the auxiliary flume (14) and the underdrain laterals (24), the flow distribution plate (18) having at least one liquid metering orifice and at least one gas metering orifice. The baffle (10) may take one of many forms. The baffle (10) creates an adequate liquid pool in the common main conduit for low velocity flow of backwash liquid while at the same time providing uninhibited flow of backwash gas. Maldistribution is thereby controlled. Stand-pipes (35) may be used in place of the baffle (10). A method for concurrent gas/liquid backwash according to the invention is also disclosed. The invention may be applied to flat bottom flumes or insufficiently recessed flumes.
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公开(公告)号：EP0572083A3
公开(公告)日：1994-02-09
申请号：EP93201471.5
申请日：1993-05-24
CPC分类号： B01D24/24 , B01D24/4626 , B01D24/4631
摘要： An improvement for a filter system which distributes backwash fluid uniformly throughout a bed of granular media is disclosed. The filter system includes a distributor positioned beneath and supporting the media, with the distributor having a plurality of walls which define a primary horizontal conduit and a secondary horizontal conduit. At least one of the walls which define the conduits contains metering orifices that connect the primary conduit to the secondary conduit. The improvement includes at least one baffle positioned within the primary conduit to facilitate uniform flow of backwash fluid from the primary conduit through the metering orifices into the secondary conduit. The baffle may comprise flanges extending from the walls which define the primary conduit normal to a fluid flow direction in the conduit. Alternatively, the baffle may include posts positioned within the conduit. The baffle generally reduces flow velocity near the wall which contains the metering orifices to enhance distribution of backwash fluids from the primary conduit to the secondary conduit. The baffle is preferably located near an inlet for the primary conduit, which is the high energy portion of the conduit. The invention also includes tubular inserts which may be placed in the metering orifices to assist backwash fluid flow in making the 90 degree turn from the primary conduit into the metering orifices.
摘要翻译： 公开了一种过滤器系统的改进，其将反洗流体均匀地分布在整个粒状介质床中。 过滤器系统包括位于下方并支撑介质的分配器，分配器具有限定主水平导管和副水平导管的多个壁。 限定导管的壁中的至少一个包含将主导管连接到次导管的计量孔。 改进包括至少一个位于主管道内的挡板，以便于反冲洗流体从主管道通过计量孔道均匀流入副管道。 挡板可以包括从限定主导管垂直于导管中的流体流动方向的壁延伸的凸缘。 或者，挡板可以包括定位在导管内的柱。 挡板通常降低靠近包含计量孔的壁的流速，以增强从主管道到次管道的反洗流体的分配。 挡板优选位于主导管的入口附近，主导管是导管的高能量部分。 本发明还包括可以放置在计量孔中的管状插入件，以帮助反冲洗流体流动，从主管道进入计量孔90度转弯。
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6.发明公开Air duct block for air/water underdrain systems in gravity filters 失效LuftleitungsblockfürLuft / Wasserablaufsysteme in Schwerkraftfiltern。
公开(公告)号：EP0562722A1
公开(公告)日：1993-09-29
申请号：EP93301436.7
申请日：1993-02-25
发明人： Brown, Marvin A.
IPC分类号： B01D24/24
CPC分类号： B01D24/24 , B01D24/4626 , B01D24/4631
摘要： An air duct block for air/water underdrain systems in gravity filters comprising a row of interconnected air duct blocks positioned below the filtering media and extending transversely to the underdrain laterals. Each air duct block is in communication with at least one adjacent individual underdrain filter block to supply backwash gas thereto during backwashing operations, thereby supplying backwash gas to its associated lateral. Each air duct block is in further communication with at least one adjacent air duct block such that backwash gas flows between the interconnected air duct blocks and along the row of air duct blocks. This system supplies backwash gas to the entire underdrain system through a single pipe from a source of supply.
摘要翻译： 用于重力过滤器中的用于空气/水的缺水系统的空气管道块，包括位于过滤介质下方并横向于下沉管道延伸的一排互连的空气管道块。 每个空气管道块与至少一个相邻的单独的下划线过滤块连通，以在回洗操作期间向其供应反冲洗气体，从而将反冲洗气体供应到其相关联的侧面。 每个空气管道块与至少一个相邻的空气管道块进一步连通，使得反冲洗气体在相互连接的空气管道块之间并沿着排气管道块流动。 该系统通过来自供应源的单个管道向整个排水系统提供反冲洗气体。
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7.发明授权APPARATUS AND METHOD FOR DISTRIBUTING GAS AND LIQUID DURING BACKWASH IN FILTER UNDERDRAIN FLUMES USING DUAL SEPARATION 有权装置及方法BACKWASH用两条分离过滤器排水通道气体和液体的分布
公开(公告)号：EP1885468B1
公开(公告)日：2014-10-01
申请号：EP06784426.6
申请日：2006-05-17
发明人： GEIBEL, John, L.
CPC分类号： B01D24/24 , B01D24/4631
摘要： A backwash distribution apparatus for a filter having a filter tank and a plurality of underdrain laterals includes a first and second separator device positioned in a common main conduit to define first and second auxiliary flumes. The first and second auxiliary flumes are in fluid communication with the common main conduit and the underdrain laterals. The first separator device has at least one flume liquid metering orifice preferably located near the bottom of the first separator device so that it may be below a gas liquid interface in the first auxiliary flume. The second separator device has either a weir edge or a plurality of metering orifices (or both) for passing backwash liquid from the common main conduit into the second auxiliary flume. The second separator device creates an adequate liquid pool in the common main conduit to prevent short circuiting of gas into a liquid opening for the common main conduit and also to provide low velocity flow of backwash liquid therein, while also providing uninhibited flow of backwash gas. The second separator also controls the distribution of backwash liquid and/or gas inside the common main conduit. A method for gas backwash in the presence of liquid according to the invention is also disclosed.
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8.发明公开APPARATUS AND METHOD FOR DISTRIBUTING GAS AND LIQUID DURING BACKWASH IN FILTER UNDERDRAIN FLUMES USING DUAL SEPARATION 有权装置及方法BACKWASH用两条分离过滤器排水通道气体和液体的分布
公开(公告)号：EP1885468A2
公开(公告)日：2008-02-13
申请号：EP06784426.6
申请日：2006-05-17
发明人： GEIBEL, John, L.
IPC分类号： B01D24/46
CPC分类号： B01D24/24 , B01D24/4631
摘要： A backwash distribution apparatus for a filter having a filter tank and a plurality of underdrain laterals includes a first and second separator device positioned in a common main conduit to define first and second auxiliary flumes. The first and second auxiliary flumes are in fluid communication with the common main conduit and the underdrain laterals. The first separator device has at least one flume liquid metering orifice preferably located near the bottom of the first separator device so that it may be below a gas liquid interface in the first auxiliary flume. The second separator device has either a weir edge or a plurality of metering orifices (or both) for passing backwash liquid from the common main conduit into the second auxiliary flume. The second separator device creates an adequate liquid pool in the common main conduit to prevent short circuiting of gas into a liquid opening for the common main conduit and also to provide low velocity flow of backwash liquid therein, while also providing uninhibited flow of backwash gas. The second separator also controls the distribution of backwash liquid and/or gas inside the common main conduit. A method for gas backwash in the presence of liquid according to the invention is also disclosed.
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公开(公告)号：EP1268027A1
公开(公告)日：2003-01-02
申请号：EP01907149.7
申请日：2001-02-09
发明人： EADES, Andrew , PENNO, Jeffrey
CPC分类号： B01D24/36 , B01D21/0042 , B01D21/0045 , B01D21/16 , B01D21/2433 , B01D21/2444 , B01D21/2488 , B03D1/002 , B03D1/004 , B03D1/1412 , B03D1/1431 , B03D1/1481 , B03D2201/002 , C02F1/24 , C02F1/54 , C02F1/56
摘要： A clarification system for fluids in which particles are separated from the fluid by flotation and in which the buoyant media inducing the flotation is recycled. Flotation can be assisted by a flotation assistance device, such as dissolved air flotation.
摘要翻译： 一种流体澄清系统，其中颗粒通过浮选与流体分离，并且其中浮力介质引起浮选被再循环。 漂浮辅助装置可以帮助浮选，例如溶气浮选。
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公开(公告)号：EP0572083A2
公开(公告)日：1993-12-01
申请号：EP93201471.5
申请日：1993-05-24
CPC分类号： B01D24/24 , B01D24/4626 , B01D24/4631
摘要： An improvement for a filter system which distributes backwash fluid uniformly throughout a bed of granular media is disclosed. The filter system includes a distributor positioned beneath and supporting the media, with the distributor having a plurality of walls which define a primary horizontal conduit and a secondary horizontal conduit. At least one of the walls which define the conduits contains metering orifices that connect the primary conduit to the secondary conduit. The improvement includes at least one baffle positioned within the primary conduit to facilitate uniform flow of backwash fluid from the primary conduit through the metering orifices into the secondary conduit. The baffle may comprise flanges extending from the walls which define the primary conduit normal to a fluid flow direction in the conduit. Alternatively, the baffle may include posts positioned within the conduit. The baffle generally reduces flow velocity near the wall which contains the metering orifices to enhance distribution of backwash fluids from the primary conduit to the secondary conduit. The baffle is preferably located near an inlet for the primary conduit, which is the high energy portion of the conduit. The invention also includes tubular inserts which may be placed in the metering orifices to assist backwash fluid flow in making the 90 degree turn from the primary conduit into the metering orifices.
摘要翻译： 公开了一种将反洗流体均匀地分布在颗粒介质床中的过滤系统的改进。 过滤器系统包括位于介质的下面并支撑介质的分配器，其中分配器具有限定主要水平导管和次级水平导管的多个壁。 限定导管的至少一个壁包含将主导管连接到次级导管的计量孔。 该改进包括至少一个位于主导管内的挡板，以便反冲洗流体从主导管通过计量孔均匀地流动到次级导管中。 挡板可以包括从壁延伸的凸缘，其限定了与导管中的流体流动方向垂直的主要导管。 或者，挡板可以包括定位在导管内的柱。 挡板通常减少包含计量孔的壁附近的流速，以增强反冲洗流体从主管道到次级管道的分配。 挡板优选位于主导管的入口附近，主导管是导管的高能部分。 本发明还包括管状插入件，其可以放置在计量孔中以帮助反冲洗流体在从主管道进入计量孔的90度转弯中流动。
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