公开(公告)号：US5225078A

公开(公告)日：1993-07-06

申请号：US845690

申请日：1992-03-04

Applicant: Ralph A. Polasky ,  Vue X. Yang

Inventor： Ralph A. Polasky ,  Vue X. Yang

IPC: C02F1/00

CPC classification number: C02F1/003 ,  C02F2307/04

Abstract: A pour-through pitcher filter assembly includes a compact filter element including a thin annular disk of molded activated carbon and a peripheral annular seal element. The seal element allows the filter to be replaceably mounted in the lower end of a plastic reservoir, which reservoir is adapted to be supported in the top of a pitcher for receiving filtered water. The reservoir may be made by a blow molding process and includes an integral bellows member which is manually collapsible to pressurize the interior of the reservoir to initiate gravity flow through an initially dry filter element. The seal element utilizes a synthetic rubber material and is preferably insert molded around the carbon filter disk.

Abstract translation: 倾倒式浸渍过滤器组件包括紧凑的过滤元件，其包括模制活性炭的薄环形盘和外围环形密封元件。 密封元件允许过滤器可更换地安装在塑料储存器的下端中，该储存器适于被支撑在用于接收过滤水的投手的顶部。 储存器可以通过吹塑工艺制成并且包括整体的波纹管构件，该波纹管构件可手动地折叠以对储存器的内部加压以引起重力流过初始干燥的过滤元件。 密封元件使用合成橡胶材料，并且优选地围绕碳过滤盘插入模制。

公开(公告)号：US5061367A

公开(公告)日：1991-10-29

申请号：US421558

申请日：1989-10-13

Applicant: Gary L. Hatch ,  Ralph A. Polasky

Inventor： Gary L. Hatch ,  Ralph A. Polasky

IPC: C02F1/00 ,  C02F1/28 ,  C02F1/50

CPC classification number: C02F1/283 ,  C02F1/003 ,  C02F1/50 ,  C02F2201/006

Abstract: A filter cartridge for treating drinking water to remove a broad range of microorganisms includes a microbiocidal resin layer, a porous activated carbon filter element and a flow controller to assure a minimum effective residence time of water in the filter under varying pressure conditions. The microbiocidal resin preferably comprises a halogenated resin bed which is effective to kill a broad range of bacteria, viruses and protozoan cysts. The five micron carbon filter element removes any particularly resistant cysts which may have survived passage through the resin bed. The filter may also be provided with a scavenger resin downstream of the haogenated resin bed to remove any free halogens from the final effluent. A buffering resin may also be included upstream of the halogenated resin bed to precondition high pH supply water. Compensation for the decreased microbiocidal activity of the halogenated resin with decreasing supply water temperature may be provided by a temperature sensitive flow control valve which increasingly restricts the flow of supply water into the filter with decreasing water temperature.

Abstract translation: 用于处理饮用水以除去大量微生物的滤筒包括微生物杀伤树脂层，多孔活性炭过滤元件和流量控制器，以确保在变化的压力条件下水在过滤器中的最小有效停留时间。 该杀微生物树脂优选包含有效杀死广泛的细菌，病毒和原生动物囊肿的卤化树脂床。 五微米碳过滤元件去除可能通过树脂床的任何特别耐受的囊肿。 过滤器还可以在散热树脂床的下游设置有清除树脂，以从最终流出物中除去任何游离卤素。 也可以在卤化树脂床的上游包含缓冲树脂以预处理高pH供应水。 通过温度敏感的流量控制阀可以提供降低的供水温度降低的卤化树脂的杀微生物活性的补偿，其随着水温的降低而越来越多地限制供水进入过滤器的流量。

公开(公告)号：US5180491A

公开(公告)日：1993-01-19

申请号：US711330

申请日：1991-06-06

Applicant: Ralph A. Polasky

Inventor： Ralph A. Polasky

IPC: B01D39/16 ,  B01D39/20 ,  C02F1/00 ,  C02F1/28 ,  C02F1/64

CPC classification number: B01D39/16 ,  B01D39/2072 ,  C02F1/003 ,  C02F1/283 ,  C02F1/64 ,  C02F2201/006

Abstract: An iron removal system for a drinking water supply includes a synergistic combination of an oxidation/filtration unit and an activated carbon filter unit. The oxidation/filtration unit utilizes a manganese-treated zeolite in the form of normally undesirable fines. The problems of high pressure drop and difficult handling of zeolites fines are eliminated by utilizing a more porous radial tubular flow construction in which the fines are confined in a packed bed. The filter cartridge is made for disposal when exhausted. The series connected activated carbon filter continues to remove iron from the outlet of the zeolite filter long after the capacity for iron removal of the latter has exceeded desirable limits. The combined filter system is less expensive and easier to operate and maintain than a comparable regenerable prior art oxidation/filtration system for iron removal.

Abstract translation: 用于饮用水源的除铁系统包括氧化/过滤单元和活性炭过滤器单元的协同组合。 氧化/过滤装置采用锰处理的沸石，其形式为通常不期望的细粉。 通过利用更多孔的径向管状流动结构消除了沸石细粉的高压降和难以处理的问题，其中细粉被限制在填充床中。 滤芯在耗尽时进行处理。 串联的活性炭过滤器继续从沸石过滤器的出口除去铁，后者的铁去除能力已经超过了期望的极限。 组合的过滤系统比用于除铁的可比较的可再生现有技术的氧化/过滤系统更便宜并且更容易操作和维护。