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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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2.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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3.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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4.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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5.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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6.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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8.发明公开
公开(公告)号：EP0524780A1
公开(公告)日：1993-01-27
申请号：EP92306570.0
申请日：1992-07-17
发明人： Brown, Marvin A.
CPC分类号： B01D24/12 , B01D24/22 , B01D24/4631
摘要： A flume distribution system includes a distributor having a stationary lower portion and a removable upper portion. The lower portion defines a duct which is in fluid communication with a flume and at least one underdrain lateral. The lower portion also includes an apertured end wall which abuts one of the underdrain laterals at a lateral inlet, and a stop is disposed within the duct and spaced from the end wall. The duct receives a removable orifice plate which is adapted to pivot between a slant inactive position abutting the stop and an upright active position restricting the aperture in the end wall. During backwash operations, water is introduced to the flume and enters each duct in the lower portion of the distributor, and the pressure of the incoming water causes the orifice plate to pivot from the slant position to the upright position, reducing the cross-sectional area of the aperture in the end wall and thereby regulating the velocity of backwash flow from the flume into the lateral inlet. The orifice plate is held in place by a pressure differential across the plate, but it returns to the slant inactive position during filtration when flow through the system is reversed. The upper portion of the distributor may be removed as needed to place different sized orifice plates within the ducts for obtaining uniform backwash distribution.
摘要翻译： 水槽分配系统包括具有固定下部和可拆卸上部的分配器。 下部限定与水槽流体连通的管道和至少一个缺口侧向。 下部还包括一个有孔的端壁，其在侧向入口处邻接一个下划线，并且止动件设置在管道内并与端壁间隔开。 管道接收可移除的孔板，该孔板适于在靠近止挡件的倾斜非活动位置和限制端壁中的孔口的直立活动位置之间枢转。 在反冲洗操作期间，将水引入水槽并进入分配器下部的每个管道，并且进入的水的压力使得孔板从倾斜位置枢转到直立位置，从而减小横截面积 的端壁中的孔径，从而调节从水槽进入侧向入口的反冲洗流速。 孔板通过板上的压差保持在适当位置，但是当流过系统的过程中，孔板返回到倾斜的非活动位置。 可以根据需要去除分配器的上部，以将不同尺寸的孔板放置在管道内以获得均匀的反冲洗分布。
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9.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：EP0933111A2
公开(公告)日：1999-08-04
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.
摘要翻译： 对于具有一个过滤箱（13）和暗渠分支管的多个（24）的过滤器（11）一种共存流体回流分配装置包括一共用总管（12），其定位的挡板（10）在辅助水道来定义（14） 挡板（10）和暗渠分支管（24）之间。 辅助水道（14）与共用总管（12）和暗渠分支管（24）流体连通。 挡板（10）具有至少一个水道液体计量孔（16）优选地位于邻近所述挡板（10）的底部，所以也可以是下面在并发的气/液时的辅助水道（14）的气/液界面 反洗操作。 流动分配板（18）可在辅助水道（14）和暗渠分支管（24）之间被定位，具有至少一个液体计量孔和至少一个气体计量孔的流量分配板（18）。 挡板（10）可以采取许多形式中的一种。 挡板（10）创建到在反冲洗液体的低速度流共用总管足够液池，而在同一时间提供反洗气体的未抑制流动。 分布不均从而控制。 竖管（35）来代替所述挡板（10）的使用。 一种用于并发的气/液反洗gemäß游离缺失到本发明光盘gibt方法。 本发明可以被应用到平底水槽或没有充分凹进水槽。
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10.发明公开
公开(公告)号：EP0755292A1
公开(公告)日：1997-01-29
申请号：EP94917353.0
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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