WO2008075976A1 - Système de filtrage - Google Patents

Système de filtrage Download PDF

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Publication number
WO2008075976A1
WO2008075976A1 PCT/NZ2007/000367 NZ2007000367W WO2008075976A1 WO 2008075976 A1 WO2008075976 A1 WO 2008075976A1 NZ 2007000367 W NZ2007000367 W NZ 2007000367W WO 2008075976 A1 WO2008075976 A1 WO 2008075976A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
filtration system
carbon
bag
gravity feed
Prior art date
Application number
PCT/NZ2007/000367
Other languages
English (en)
Inventor
Russell Henry Kelly
Original Assignee
Russell Henry Kelly
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Russell Henry Kelly filed Critical Russell Henry Kelly
Publication of WO2008075976A1 publication Critical patent/WO2008075976A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C02F1/002—Processes for the treatment of water whereby the filtration technique is of importance using small portable filters for producing potable water, e.g. personal travel or emergency equipment, survival kits, combat gear
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C02F1/766—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens by means of halogens other than chlorine or of halogenated compounds containing halogen other than chlorine
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/18—Removal of treatment agents after treatment
    • C02F2303/185—The treatment agent being halogen or a halogenated compound

Definitions

  • the invention relates to filtration systems and particularly to a filtration system relying on gravity for feed pressure and which system supplies potable water in relatively small quantities for use by a single person or small group of people.
  • Typical filtration systems for drinking water include a number of filters in series with each filter designed to remove particular unwanted and undesirable contaminant or pollutant materials from the water.
  • the number and type of filters incorporated in a filtration system depend on the particular problem associated with a particular geographical region. The filters are selected so that the eventual output water is of a potable quality which reaches desired health standards.
  • filtration systems typically include a separate cartridge filter and a media tank filter.
  • Cartridge filters have a ceramic cartridge, a polypropylene filter or a pleated paper or cardboard filter selected to suit a user's requirements. Only ceramic cartridge filters are rated to provide an absolute level of filtration. This is understood to be because the other filters have inherent limitations and depending on the input pressure of water to the filter do allow particles slightly larger than the filters nominal rating to pass through the filter.
  • An object of the invention is therefore to provide a filtration system which is gravity feed, is relatively inexpensive to operate and maintain and which offers a useful alternative choice.
  • a gravity feed filtration system including a bag reservoir adapted in use to be hung from any suitable means, the bag reservoir including a washable preliminary bag filter for removing sediment and protozoam cysts, an outlet from the bag reservoir and preliminary bag filter being connected to a filter cartridge incorporating in layers a carbon filtration media, an iodinated resin, an iodide scavenging resin and a carbon polishing filtration medium, the series of layers being such that the carbon pre-filter removes, pesticides, herbicides and organic matter, the iodinated resin introduces iodine to kill bacteria and viruses, the iodide scavenging resin removes the iodine species and the carbon polishing filter medium polishes the water to improve taste, the series of layers are selected to provide gravity fed water at a rate of about 12 to 15 litres an hour.
  • the bag reservoir can have a capacity of about 9 litres and the washable preliminary bag filter can be a 0.5 to 1.00 micron polypropylene bag filter.
  • the preliminary bag filter is selected to remove at least sediment and cysts.
  • the iodinated resin can be the resin sold under the trade mark MCV® which introduces iodine disinfectant to kill bacteria and viruses.
  • the iodine scavenging resin can be the product lodosorb® which is described in US patent specification no. 2005/0234200.
  • the resin removes ali species of post disinfection iodine.
  • the carbon polishing filter medium can be any suitable carbon filtration medium.
  • the cartridge filter can be a cylindrical member with a capacity of about 720 cubic centimetres (cc) into which the' following layers of filter media are included: about 100cc of carbon: 150cc of lodosorb; 150cc of MCV and 100cc of carbon.
  • the outlet from the cartridge filter can include a valve or tap for turning flow through the filtration system off and on.
  • Figure 1 shows a front view of an example of filtration system according to the invention.
  • Figure 2 shows the example shown in Figure 1 with a preliminary bag filter thereof removed from within the bag reservoir.
  • the filtration system has a bag reservoir 1 adapted in use to be hung from any suitable means such as a purpose built stand, hook or branch (not shown).
  • the bag reservoir 1 includes a washable preliminary bag filter 2.
  • the bag reservoir 1 can, for example, have a capacity of about 9 litres and the washable preliminary bag filter 2 can be a 0.5 to 1.00 micron polypropylene bag filter.
  • the bag filter 2 in Figure 2 is shown pulled out from within the bag reservoir for cleaning or maintenance.
  • An outlet 3 from the bag reservoir and preliminary bag filter 1 is connected to a filter cartridge 4.
  • the filter cartridge 4 can have a capacity of 500cc or 720CC.
  • the filter cartridge 4 has placed therein, in layers, a carbon filtration media, an iodinated resin, an iodide scavenging resin and a carbon polishing filtration medium.
  • the iodinated resin can be the resin sold under the trade mark MCV® which introduces iodine disinfectant to kill bacteria and viruses.
  • the iodine scavenging resin can be the product lodosorb® which is described in US patent specification no. 2005/0234200.
  • the resin removes all species of post disinfection iodine.
  • the carbon polishing filter can be any suitable carbon filtration medium.
  • the cartridge filter 4 can be a cylindrical member with a capacity of about 500 cubic centimetres (cc) and preferably 720cc into which the following layers of filter media are included: . about 100cc of carbon: 150cc of lodosorb; 150cc of MCV and 10Occ of carbon.
  • the series of layers are such that the bag filter removes sediment and protozoam cysts, the carbon pre-filter removes, pesticides, herbicides and organic matter, the iodinated resin introduces iodine to kill bacteria and viruses, the iodide scavenging resin removes the iodine species and the carbon polishing filter polishes the water to improve taste.
  • the series of layers are selected to provide gravity fed water at a rate of about 12 to 15 litres an hour.
  • the selected parameters for the filtration layers are such that after a throughput of about 3000 litres the cartridge will need to be replaced or the filter mediums recharged.
  • the outlet 5 from the cartridge filter can include a valve or tap 6 for turning off and on the flow through the filtration system.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

L'invention concerne un système de filtrage par gravité comportant un réservoir en forme de poche conçu pour être suspendu à tout élément adapté en utilisation. Le réservoir en forme de poche comporte un premier filtre de poche préliminaire lavable, destiné à extraire des sédiments et des kystes protozoaires, une sortie du réservoir en forme de poche et le filtre de poche préliminaire étant connectés à une cartouche de filtrage contenant, en couches: un milieu de filtrage à carbone; une résine iodée; une résine de piégeage d'iodure; et un milieu de filtrage extra-fin à carbone. Les couches sont conçues de telle manière que le pré-filtre à carbone extrait des pesticides, des herbicides et de la matière organique; la résine iodée introduit de l'iode afin de tuer les bactéries et les virus; la résine de piégeage d'iodure extrait les espèces d'iodure; et le milieu de filtrage extra-fin à carbone réalise un filtrage extra-fin de l'eau afin d'en améliorer le goût. Les couches sont choisies de manière à distribuer de l'eau par gravité à un débit d'environ 12 à 15 litres par heure.
PCT/NZ2007/000367 2006-12-18 2007-12-18 Système de filtrage WO2008075976A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ549948 2006-12-18
NZ54994806 2006-12-18

Publications (1)

Publication Number Publication Date
WO2008075976A1 true WO2008075976A1 (fr) 2008-06-26

Family

ID=39536509

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ2007/000367 WO2008075976A1 (fr) 2006-12-18 2007-12-18 Système de filtrage

Country Status (1)

Country Link
WO (1) WO2008075976A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012019969A1 (fr) * 2010-08-09 2012-02-16 Unilever Nv Dispositif de purification d'eau à faible coût
GB2525158A (en) * 2014-02-18 2015-10-21 Bw Technologies Ltd Purified water supply system
GB2531177A (en) * 2015-04-08 2016-04-13 Lifestraw Sa Gravity-driven water purification system and method for manufacturing a flexible, collapsible water container

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2711994A (en) * 1950-05-26 1955-06-28 Quinn Products Inc Gravity flow sterilizing filters
US2792942A (en) * 1953-04-14 1957-05-21 Feuillet Georges Portable apparatus for the purifying and filtering of water
US3715035A (en) * 1971-04-12 1973-02-06 J Welsh High capacity portable water purifier
US5126044A (en) * 1990-09-27 1992-06-30 Magnusson Jan H Iodine resin/carbon water purification system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2711994A (en) * 1950-05-26 1955-06-28 Quinn Products Inc Gravity flow sterilizing filters
US2792942A (en) * 1953-04-14 1957-05-21 Feuillet Georges Portable apparatus for the purifying and filtering of water
US3715035A (en) * 1971-04-12 1973-02-06 J Welsh High capacity portable water purifier
US5126044A (en) * 1990-09-27 1992-06-30 Magnusson Jan H Iodine resin/carbon water purification system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Water Security Corporation", 20 September 2005 (2005-09-20), Retrieved from the Internet <URL:http://www.watseco.com/technology.asp> *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012019969A1 (fr) * 2010-08-09 2012-02-16 Unilever Nv Dispositif de purification d'eau à faible coût
CN103153873A (zh) * 2010-08-09 2013-06-12 荷兰联合利华有限公司 低成本净水设备
CN103153873B (zh) * 2010-08-09 2015-07-29 荷兰联合利华有限公司 低成本净水设备
GB2525158A (en) * 2014-02-18 2015-10-21 Bw Technologies Ltd Purified water supply system
GB2531177A (en) * 2015-04-08 2016-04-13 Lifestraw Sa Gravity-driven water purification system and method for manufacturing a flexible, collapsible water container
WO2016162035A1 (fr) * 2015-04-08 2016-10-13 Lifestraw Sa Système de purification gravitaire d'eau et procédé pour la fabrication d'un réservoir d'eau souple aplatissable
GB2531177B (en) * 2015-04-08 2016-11-23 Lifestraw Sa Gravity-driven water purification system and method for manufacturing a flexible, collapsible water container
CN106255539A (zh) * 2015-04-08 2016-12-21 生命吸管有限公司 重力驱动的净水系统以及用于制造柔性可折叠水容器的方法
DE112015000093B4 (de) * 2015-04-08 2017-11-02 Vestergaard Sa Schwerkraftgetriebenes Wasserreinigungssystem
CN106255539B (zh) * 2015-04-08 2018-07-03 韦斯特高有限公司 重力驱动的净水系统以及用于制造柔性可折叠水容器的方法
US10266427B2 (en) 2015-04-08 2019-04-23 Vastergaard SA Apparatus for water purification

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