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    Water purification device
    72.
    发明授权
    Water purification device 失效
    净水装置

    公开(公告)号：US4464255A

    公开(公告)日：1984-08-07

    申请号：US471162

    申请日：1983-03-01

    Applicant: Yoshihiko Ueda

    Inventor： Yoshihiko Ueda

    IPC: B01D24/02 ,  B01D24/18 ,  B01D23/10

    CPC classification number: B01D24/4642 ,  B01D24/12 ,  B01D2201/087

    Abstract: A water purification device comprises a raw water channel forming plate extending spirally along the inner wall of a filter tank. A collector for collecting filtered water, positioned in the layer of the filter medium substantially at the center of the raw water channel forming plate, is also disclosed. Since the raw water is filtered from the periphery of the layer of the filter medium and the continuous raw water channel formed by the spirally extending raw water channel forming plate enables the number of influx points of raw water into the raw water channel to be reduced to one at a minimum, the structure is simplified and manufacture costs are reduced.

    Abstract translation: 水净化装置包括沿着过滤罐的内壁螺旋地延伸的原水通道形成板。 还公开了一种收集器，用于收集位于原水通道形成板的中心处的过滤介质层中的过滤水。 由于原水从过滤介质层的周边过滤，并且由螺旋形延伸的原水通道形成板形成的连续的原水通道使得能够将原水流入原水通道的数量减少到 至少一个，结构简化，制造成本降低。

    Filtration method
    73.
    发明授权
    Filtration method 失效
    过滤方法

    公开(公告)号：US4178245A

    公开(公告)日：1979-12-11

    申请号：US514129

    申请日：1974-10-11

    Applicant: Azuma Nakaoka ,  Sankichi Takahashi

    Inventor： Azuma Nakaoka ,  Sankichi Takahashi

    IPC: B01D29/46 ,  B01D29/15 ,  B01D29/31 ,  B01D29/62 ,  B01D29/66 ,  B01D23/24

    CPC classification number: B01D29/15 ,  B01D2201/087

    Abstract: A filtration method employs a water tank, a filtration tank within the water tank and provided with a filter material for straining solids from sewage supplied to the water tank, to produce filtered water within the filtration tank, a shield or guide plate encompassing the filtration tank adjacent the filter material to provide a liquid flow passage therebetween, and a bubble generator having a plurality of openings for generating bubbles within the flow zone, so that the bubbles pass along the filter material. Sewage water that is supplied to the water tank is conducted to the flow zone where part of the water passes through the filter material and solids suspended therein are strained out and attached to the outer surface of the filter material. The generated bubbles passing through the flow zone create a difference in pressure between a point at which the fluid including the bubble is flowing in the water flow zone and an opposite point within the filtered water chamber of the filtration tank, which will dislodge the solids attached to the filter material and prevent clogging of the filter material so that the filtration and passage of bubbles may be continuous without clogging.

    Abstract translation: 过滤方法在水箱内采用水箱，过滤箱，并提供过滤材料，用于将固体从施加到水箱的污水中固化，在过滤罐内产生过滤水，围绕过滤罐的屏蔽或引导板 邻近过滤材料以在其间提供液体流动通道，以及具有多个用于在流动区域内产生气泡的开口的气泡发生器，使得气泡沿着过滤材料通过。 供给到水箱的污水进入到水分通过过滤材料的流动区域，悬浮在其中的固体被过滤并附着在过滤材料的外表面上。 产生的气泡通过流动区域产生在包含气泡的流体在水流区域内流过的点与过滤罐的过滤水室内的相反点之间的压力差，这将移除附着的固体 并且防止过滤材料的堵塞，使得气泡的过滤和通过可以连续而不堵塞。

    MEDIA RETENTION PLATE FOR A BLOCK UNDERDRAIN SYSTEM
    75.
    发明公开
    MEDIA RETENTION PLATE FOR A BLOCK UNDERDRAIN SYSTEM 审中-公开

    公开(公告)号：US20240335770A1

    公开(公告)日：2024-10-10

    申请号：US18626036

    申请日：2024-04-03

    Applicant: De Nora Water Technologies, LLC

    Inventor： Rehan A. Mukadam ,  Roy Yancey ,  Steve Jantsch ,  Kevin Schwarz ,  Stan Shmia

    IPC: B01D24/46 ,  B01D24/00

    CPC classification number: B01D24/4631 ,  B01D24/001 ,  B01D2101/04 ,  B01D2201/087

    Abstract: A media retention plate for an underdrain system having one or more filter blocks. The plate can include a first slot configured to allow the passage of air and a second slot configured to allow the passage of water during an air backwash. The media retention plate is configured to facilitate the water to flow back into the one or more filter blocks through the second slot while maintaining air flow through the first slot to create an optimal collapse pulse. The first and second slots are evenly sized and evenly spaced apart to facilitate the creation of a relatively smaller-sized collapse pulse during a sequential air-water backwash. A plurality of inserts can be arranged along a perimeter of a basal portion of the bottom surface of the media retention plate. The inserts improve the structural integrity of and prevent uplift of the media retention plate.

    Method for washing a filter having at least two layers of filtering media, in particular for filtering seawater, and equipment for implementing said method
    79.
    发明授权
    Method for washing a filter having at least two layers of filtering media, in particular for filtering seawater, and equipment for implementing said method 有权
    用于洗涤具有至少两层过滤介质，特别是用于过滤海水的过滤器的方法，以及用于实现所述方法的设备

    公开(公告)号：US09295929B2

    公开(公告)日：2016-03-29

    申请号：US14376051

    申请日：2013-01-29

    Applicant: DEGREMONT

    Inventor： Gerard Flores

    IPC: B01D24/16 ,  B01D24/48 ,  B01D24/00 ,  B01D24/12 ,  B01D24/46 ,  B01D24/14

    CPC classification number: B01D24/4631 ,  B01D23/16 ,  B01D23/20 ,  B01D23/24 ,  B01D24/12 ,  B01D24/14 ,  B01D24/4636 ,  B01D24/4869 ,  B01D2101/04 ,  B01D2201/08 ,  B01D2201/081 ,  B01D2201/087

    Abstract: The invention relates to a method for washing a filter (F) having at least two layers of filtering media (4, 5) for raw water containing components having a tendency to form cakes (M), in particular for seawater, the layers of filtering media being supported by a base (6) comprising pass-through openings and provided with nozzles (6a) enabling air and/or wash water to be injected, the raw water flowing through the layers from top to bottom and the treated water being recovered at the lower portion of the filter, and which comprises at least one spillway (D) at the upper portion thereof for collecting the wash water. The method includes the following series of steps: a) the raw water intake (2) is closed, followed by the filtration outlet valve (13), the filter is depressurized, and the filter cake is broken; b) the water level in the filter is lowered; c) only pressurized air is blown into the lower portion of the filter, said air passing through the layers of the filter from bottom to top and causing the cakes to be reduced to particles, in particular by means of friction; d) rinsing is carried out from bottom to top using only water, the water rinsing time being sufficiently short to ensure that the water level stops below the level of the upper edge of the wash water collection spillway; e) the filter water is emptied once again by discharging same from the lower portion of the filter; f) steps c), d) and e) are repeated at least once, and a final rinsing is carried out by injecting a quantity of backwashing water through the bottom portion of the filter, which is then discharged from the upper portion of the filter via a pipe (14).

    Abstract translation: 本发明涉及一种用于清洗具有至少两层过滤介质（4,5）的过滤器（F）的方法，所述过滤介质（4,5）用于含有具有形成蛋糕（M），特别是用于海水的趋势的组分的含水过滤层 介质由包括通过开口的基部（6）支撑，并且设置有能够喷射空气和/或洗涤水的喷嘴（6a），所述原水从上到下流过层，并且处理的水在 过滤器的下部，并且在其上部包括至少一个溢流道（D），用于收集洗涤水。 该方法包括以下一系列步骤：a）原水入口（2）关闭，然后过滤出口阀（13），过滤器减压，滤饼破碎; b）过滤器中的水位降低; c）只有加压空气吹入过滤器的下部，所述空气通过过滤器的层从底部到顶部，并且特别是通过摩擦将蛋糕还原成颗粒; d）仅使用水进行从底部到顶部的漂洗，水的冲洗时间足够短以确保水位停止在洗涤水收集溢流道的上边缘的水平以下; e）通过从过滤器的下部排出过滤水再次排空过滤水; f）步骤c），d）和e）至少重复一次，并且通过将一定量的反冲洗水通过过滤器的底部进行最后的冲洗，然后从过滤器的底部排出， 通过管道（14）。

    METHOD AND DEVICE FOR CLEANING NON-FIXED MEDIA FILTERS
    80.
    发明申请
    METHOD AND DEVICE FOR CLEANING NON-FIXED MEDIA FILTERS 有权
    用于清洁非固定介质过滤器的方法和装置

    公开(公告)号：US20100320159A1

    公开(公告)日：2010-12-23

    申请号：US12526464

    申请日：2007-02-09

    Applicant: Douglas W. Lee ,  Colin Tyrie ,  William Bateman

    Inventor： Douglas W. Lee ,  Colin Tyrie ,  William Bateman

    IPC: B01D24/46

    CPC classification number: B01D24/14 ,  B01D24/4631 ,  B01D2201/087

    Abstract: A method and apparatuses are presented for rejuvenating a bed of granular filter medium that has accumulated contaminants during filtration of a liquid stream. The method first includes the step of establishing a small volumetric flow rate of clean filtrate in reverse flow. Then, the filter media is agitated to break-up contaminants that have become agglomerated on the surface of or within the interstitial spaces of the filter media. The agitating step is accomplished by exposing the liquid-full filter media to a jetting stream comprised mostly of a gas mixed with a clean liquid. The jetting stream is dispersed throughout the filter media through a plurality of radial nozzles located within the filter bed. The radial nozzles disperse the gas within the liquid and filter media causing sufficient turbulence and agitation of the filter media granules to liberate the trapped contaminants without the need for high liquid flow rates. The number of nozzles and their placement within the filter bed are varied depending on factors such as size and shape of the filter vessel and the type of filter media being cleaned. The amount of water and gas flowing through the nozzles is also adjusted to provide substantially uniform cleaning of the entire bed. This method results in lower volumes of clean filtrate being consumed in the backwash cycle and the associated storage and recycle of that liquid back into the process. The radial nozzles are each comprised of two horizontal and parallel circular disks spaced apart to create a cylindrical void through which the pressurized gas and liquid jetting stream flows. The apparatuses presented are a singular filter vessel an a plurality of filter chambers within a common filter vessel each containing granular filter media and a plurality of radial nozzles disposed with the media for dispersing the jetting stream throughout during the cleaning and rejuvenation steps of a filtering process.

    Abstract translation: 提出了一种方法和装置，用于在液体流过滤期间使已经积聚污染物的颗粒过滤介质床复原。 该方法首先包括在反向流中建立清洁滤液的小体积流量的步骤。 然后，搅拌过滤介质以分散在过滤介质的间隙空间的表面上或其内的聚集的污染物。 搅拌步骤通过将液体完全过滤介质暴露于主要由与清洁液体混合的气体的喷射流来完成。 喷射流通过位于过滤床内的多个径向喷嘴分散在整个过滤介质中。 径向喷嘴将气体分散在液体和过滤介质中，导致过滤介质颗粒充分的湍流和搅动，以释放捕获的污染物，而不需要高液体流速。 喷嘴数量及其在过滤床内的布置根据诸如过滤容器的尺寸和形状以及要清洁的过滤介质的类型等因素而变化。 流经喷嘴的水和气体的量也被调节以提供对整个床的基本均匀的清洁。 这种方法导致在反冲洗循环中消耗的清洁滤液的体积较小，并且该液体相关的储存和再循环回到该过程中。 径向喷嘴各自包括两个水平和平行的圆形间隔开的圆形孔，以产生加压气体和液体喷射流通过该圆柱形空隙。 所提出的装置是单个过滤器容器，在共同的过滤容器内的多个过滤室，每个过滤器容器均包含颗粒过滤介质和多个径向喷嘴，该喷嘴设置有用于在过滤过程的清洁和再生步骤期间分散喷射流的介质 。

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