+

WO2012169995A1 - Filtre biologique amélioré pour des bouteilles de sport - Google Patents

Filtre biologique amélioré pour des bouteilles de sport Download PDF

Info

Publication number
WO2012169995A1
WO2012169995A1 PCT/US2011/001045 US2011001045W WO2012169995A1 WO 2012169995 A1 WO2012169995 A1 WO 2012169995A1 US 2011001045 W US2011001045 W US 2011001045W WO 2012169995 A1 WO2012169995 A1 WO 2012169995A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
clm
media
pleated
water
Prior art date
Application number
PCT/US2011/001045
Other languages
English (en)
Inventor
JR. John E. NOHREN
Original Assignee
Nohren Jr John E
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 Nohren Jr John E filed Critical Nohren Jr John E
Priority to PCT/US2011/001045 priority Critical patent/WO2012169995A1/fr
Publication of WO2012169995A1 publication Critical patent/WO2012169995A1/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
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/22—Chromium or chromium compounds, e.g. chromates
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/003—Coaxial constructions, e.g. a cartridge located coaxially within another
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/004—Seals, connections
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2307/00—Location of water treatment or water treatment device
    • C02F2307/02—Location of water treatment or water treatment device as part of a bottle

Definitions

  • the present invention relates to an enhanced
  • a second type of product relied on the application of a hollow fiber membrane to eliminate the transmittal of protozoa cysts and bacteria by size exclusion.
  • the pore size of hollow fiber membranes being limited to 2 ⁇ absolute.
  • This type product which may be preceded by a carbon block type filter, had the disadvantage of a significant pressure drop of 3 to >10 psi and periodically suffered from air blocks, but more specifically was very quickly fouled by turbidity present in most surface waters .
  • Disruptor® is a trademark owned by Ahlstrom Corporation, a Corporation of Finland having a place of business at Salmisaarenaukio 1 Helsinki Finland FI-00180. Disruptor® relates to non-woven filtration media containing boehmite nano fibers attached to nano or micro glass fibre creating an electro positive filtration component with a charge potential of >50 millivolts when combined with cellulosic and polymeric elements in the form of a non woven sheet with ported of 1 - 2 micron.
  • the single layer membrane filter containing powdered activated carbon from 25 percent to 40 percent of the total filter sheet weight, is excellent for the general treatment of municipal treated water. However, the separated dual layers improved performed as desired for the removal of biological contamination.
  • the single layer products using Disrupter® brand media, or Charged Layered Membranes, which we term media with similar characteristics can be further enhanced by the addition of a second non-woven media produced by Gramarco that has electro positive alumina or other selected media bonded to a polyester substrate.
  • this same polyester substrate non-woven media may be used as the interlayer separator when a double layer of Charged Layered Membrane (CLM) media is used and may be treated for bacteria static use or biocidal purposes or be independently charge positive or charge negative further enhancing the adhesion
  • CLM Charged Layered Membrane
  • the interlayer non-woven sheet is a polyester substrate with binder supporting a charge positive alumina, fine activated carbon, a zeolite such as ATS for heavy metal reduction, iodinated resin as a biocide, ligands for the removal of radio active isotopes, or enabling the
  • Another design option incorporates a hollow carbon composite core filter that incorporates the use of zeolites to remove lead contamination where prevalent.
  • the addition of the carbon element necessitates slightly more pressure; i.e., exhibiting a higher pressure drop.
  • the carbon composite cylindrical core functions in the radial flow mode and may also contain charged non-woven media within the open center.
  • the use of either single or double layers of the CLM media together with the non-woven treated with positively charged alumina is particularly adaptable to stainless bottles and may be configured to be used attached to the top typically by means of a threaded connection providing a means to form a biological seal using a single or double O-ring eliminating the seepage of untreated water within the bottle to the drinking port in the form of a pull-push valve or flip type straw valve.
  • the filter can also be attached to a filter extension placing the filter at the base of the bottle for use in a bottle in the up-right vertical mode using typically a plastic flip type valve.
  • any similar media with the following characteristics would be adaptable.
  • a stock thickness may be laid up from 0.5 mm to ⁇ 2.0 mm.
  • the inert supporting material making up the sheet may be highly porous cellulose; cellulose containing FDA approved thermo plastic particles or porous plastic as produced by Porex, finely ground carbon approximating 0.8 microns is added to -25% - 40% by weight as an additive.
  • ATS, a zeolite for lead reduction may be added replacing a similar percentage of carbon by volume, as well as
  • Microban or similar antimicrobial to prohibit the growth of retained microbiological contaminants. This core is then placed between sheets of polyester scrim.
  • Negatively charged contaminants include the full range of biological contaminants as well as dipoles such as turbidity and small particulates.
  • the very low pressure drop across the CLM media surface of ⁇ 0.3 - ⁇ 2 psi per pleated sheets in a ⁇ 1:5" x 1-1/4" and larger filter configuration permits ease of use in metal bottles that only rely on the negative pressure drop caused by the user sucking on the water delivery tube or valve.
  • the CLM media is also available containing very fine powdered activated carbon, ⁇ 8 ⁇ grain size. Some 30 - 35% of the weight of the CLM sheet consists of this very effective carbon which is held in place by the positive charge potential thus making the entire surface of the carbon available without sites being blinded by a binder.
  • Non-woven FDA approved filtration media suitable for use in the presented applications is
  • the media may be varied in both thickness and porosity to either enhance flow or to provide a reduced pore size containing additional adhesion sites as well as a
  • the internal void size is preferably controlled to ⁇ 1 mm.
  • the internal void generated by the pleated CLM filter is preferably created without a center supporting core. This is
  • the pleated cylinder is expanded while the interior is filled with the treated non-woven filter material.
  • the pleated cylinder when then reconfigured into its pleated design outer diameter, reducing the interior volume, the non-woven occupies the volume through the center as well as into the voids within the pleats.
  • a center core it is preferable to have a solid hollow core that has water access ports at the base providing maximum water contact over the full axial length of the center tube with
  • non-woven filter media Ten mis, or CC's represents a typical mouthful of water.
  • the water retained within the filter housing until drunk provides time for "static filtration” to remove contaminants by contact with the media, which when absorbed, the constant search for equilibrium within the contained body of water brings other present contaminants into media contact eventually removing all targeted contaminants.
  • the filter housing acts as a leak proof cup to retain the water during the dwell period of the filter within which the "static filtration"
  • elastomeric grommet is used to vary the diameter of the restriction limiting the flow to 5 ml/sec under what is perceived to be normal conditions.
  • the present invention provides an improved enhanced biological filter for sports bottles.
  • the general purpose of the present invention which will be described subsequently in greater detail, is to provide a new and improved enhanced biological filter for sports bottles title and method which has all the advantages of the prior art and none of the disadvantages.
  • the present invention essentially comprises a water filtering sports bottle with pressure relief valved top attached filtration system for receiving and dispensing water while purifying the water being dispensed, the receiving and dispensing and purifying being done in a safe, sanitary, convenient and economical manner.
  • the system comprising, in combination, a sports bottle having a pressure release valved bottle top with a bottle opening, the sports bottle adapted to receive and dispense water.
  • a circular housing top having a downwardly extending cylindrical upper wall forming an upper potting region, the circular housing top further having an upwardly extending cylindrical coupling wall for operatively coupling the housing top to the bottle top.
  • a circular base end cap has an upwardly extending cylindrical lower wall forming a lower potting region, the housing top and the base end cap being
  • a pleated inner CL filter having an upper end adjacent to and centered in the housing top, the inner tube having a lower end adjacent to" and centered in the base end cap, the inner tube forming an exterior region radially exterior of the inner tube, the inner tube forming an interior region radially interior of the inner tube, the inner tube being fabricated of a porous material and adapted to pass water radially there through during filtering.
  • a first filter has upper and lower ends located within the exterior region between the housing top and the base end cap, the first filter being fabricated of a non-woven charged layered membrane.
  • a second filter has upper and lower ends located within the interior region between the housing top and the base end cap, the second filter being fabricated of a positively charged non-woven media.
  • an upper potting compound in the upper potting region secures the first filter to the housing top and a lower potting compound in the upper potting region secures the first filter to the base end cap.
  • An even further object of the present invention is to provide a new and improved enhanced biological filter for sports bottles which is susceptible of a low cost of manufacture with regard to both materials and labor, and which accordingly is then susceptible of low prices of sale to the consuming public, thereby making such enhanced biological filter for sports bottles economically
  • Yet another object of the present invention is to provide an enhanced biological filter for sports bottles with superior filtering of well, pond and surface waters.
  • the system includes a sports bottle having a valved bottle top with a bottle opening.
  • a circular housing top has a downwardly extending cylindrical upper wall and an upwardly extending cylindrical coupling wall.
  • a circular base end cap has an upwardly extending cylindrical lower wall.
  • a pleated inner CLM filter has upper and lower ends forming radially exterior and interior regions.
  • a first filter is located within the exterior region and a second filter is located within the interior region.
  • Upper and lower potting compounds secure the first filter to the housing top and the base end cap.
  • Figure 1 shows a combination two stage filter with Disrupter® media as the first filter and positively charged non-woven as the second filter. . Water entry to the second filter media is at the base of the filter providing an axial flow path the length of filter.
  • Figure 2 is an end view section A - A of Figure 1 showing the pleated configuration as well as the openings at the base for water entry.
  • Figure 3 shows a similar filter with the base side walls extended to just short by about 0.10" from the top housing forming a cup retaining water; also, a central supporting hollow carbon composite filter core which may remain with an empty center or contain a third water treatment media.
  • Figure 4 shows a filter mounted on a molded tube that connects to a typical stainless bottle top.
  • the base of the filter is closed with the exception of water access openings in the base between the first filter and side wall.
  • Figure 5 shows the pleated external media supported by an external wall with the internal space filled with a non-woven charged media nesting directly against the external pleated media and extending out into the pleated area.
  • Figure 6 is a view through section B - B showing the outer wall extension of the base 41, supporting the external pleated filter and the area available for the secondary non-woven filtration media.
  • Figure 7 shows a filter consisting of two independent and separate CLM layers which are retained in a preferred relationship, one with the other, by means of radial positioning posts which align the pleats, on with the other precluding movement permitting the independent layers to maintain the design spacing between the layers without hampering the flow of water through the filter layers.
  • Figure 8 is a section view through C - C showing the array of pleated media positioning posts.
  • Figure 9 shows a dual layer filter with a treated non-woven filter separating the CLM layers.
  • the external layer is retained by the outer wall of the housing which extends to the top section of the housing and has
  • the inner CLM layer is supported radially by the internal hollow cylindrical post.
  • This post may be highly porous permitting radial water flow or solid, as shown with water entry near the base delivering axial water flow over the inner length of the inner tube should it be desired to add an additional media in the center void for the purpose of alkalizing the water and reducing the oxidation reduction potential, or such other media as may be specified
  • Figure 10 is view D - D through Figure 9 showing the fibrous non-woven media compressed between the CLM layers, the center tube and optional media within the center tube, in this instance chipped CLM.
  • Figure 1 The threaded top 1, is molded as a
  • top housing 2 which also has a screen 3 molded in to retain the media within the center
  • the first filter 4 is CLM media potted in place at 8 to the top housing 2 and base end cap 7.
  • the inner tube 5 forms the inner filter compartment filled with positively charged non-woven media 6 and may be an extension of top 2.
  • the entry ports 9 are spaced
  • the inner tube is a solid center tube with water access ports 9 open only at the base for water entry providing for axial filtration through the entire length of the inner tube filled with the secondary positively charged alumina coated non-woven media compressed to provide a void size of less than 1mm and in combination with the CLM media removing a minimum of 99.99% of protozoa cysts and bacteria.
  • the second filter is a positively charged alumina coated polyester non-woven media filter within the porous inner tube.
  • the assembly is adaptable as the result of a low pressure drop of
  • Figure 2 Is an a view AA from Figure 1 and shows the base 7, the CLM media 4, the inner tube 5, with openings 9. All components are bonded together by the potting media 8. The center compartment formed by the tube 5 is filled with the non-woven media 6.
  • the pleated inner CLM filter is a pleated filter of Disrupter® or CLM pleated media by means of an external housing, ported at the top, extending up as a component of the base connecting the top housing to the base, rather than though the use of an interior center core, thus forming a cup providing an internal volume sufficient to house a second filtration media such as a non-woven as a substrate supporting charged alumina, permitting the use of static filtration by retaining ⁇ 10 ml of water when not being used, further enhancing the ability to remove negatively charged matter such as biological contaminants while retaining a low pressure drop between 0.3 and 2 psi when flowing at a rate of 5 ml/sec or greater.
  • FIG. 3 The threaded top 1, is molded as a
  • top housing 2 which also has a screen 3 molded in to retain the media 6 within the center
  • the first filter 4 is CLM media potted in place at 8 to the top housing 2 and base end cap 10, the side walls of which 11, form an outer housing that encloses the filter except for water entry opening 13.
  • the inner carbon composite filter tube 12, forms the inner filter compartment which is filled with positively charged non-woven media 6.
  • the water entering at access port 13, is distributed over the exterior of the CLM surface 4 through which the water passes radially and then continues flowing radially through the carbon
  • composite filter 12 into the internal non-woven media 6, for and flows axially up through the non-woven media 6 exiting through media retaining screen 3.
  • FIG. 4 Shows a modified filter 22, mounted by threaded connection 20, plastic extension straw 29, which in-turn threads to stainless bottle cap 30.
  • the top 30 contains an air relief valve 31 and a pull-push valve 32.
  • the filter housing 22 contains the CLM media 23 and highly porous center tube 24 containing the positively charged non-woven media 34 retained at the housing top by molded-in screen 28 and the base 26.
  • the base 26 supports the potting and sealing material 21.
  • the base has scalloped openings 25 for water entry between the pleats of the CLM media 23.
  • the filter is positioned at the bottom of a bottle.
  • the system further includes an attaching plastic tube/straw coupled to the top of a bottle for drinking while in the general up-right vertical position.
  • An outer filter housing extends from the top filter housing to the base with water entry through an opening in the base between the base and vertical side wall distributing the influent water along the vertically exposed surface of first CLM filter for radial entry flow through the first filter and directly into the second non-woven filter hence flowing up through the tube to the exit port.
  • Figure 5 Maximizes the volume available for placing the charged non-woven media 6 within the internal volume of the external pleated filter 4, normally CLM or similar charged media which may contain carbon or other ancillary treatment compound.
  • the external pleated media 4 is supported by the external shell 41, a component and extension of the base 40, which locks to the top 44 with interlocking ring 42.
  • the top 44 has the integrated threaded boss 1 and has flow control grommet 45 inserted therein..
  • the pleated CLM external media 4 is potted in place by potting compound 8.
  • Non-woven media 6 is
  • the second filter is a center tube within the pleated CLM type media winner tube with water access at the tube base thus providing the entire length of the tube for axial water flow and
  • any one of several secondary treatment medias which may be granular in nature such as alkalizing media for pH enhancement and water enrichment, KDF zinc/copper media for treating hexavalent chromium, or media for the removal or radio active contaminants through the use of contaminant specific ligands bonded to inert substrates.
  • the system further includes a grommet 45 acting as a flow restrictor that may be inserted into the exit opening of a sport bottle filter with a reduced hole diameter sized between 0.050" and 0.100" to limit the treated water flow to
  • Figure 6 Is a cross section B -B essentially showing the compression of the non-woven media 6 contained within the CLM media 4 which in turn is restrained by housing 41 and potting 8, securing and sealing the pleated media 4 to the base providing the maximum internal area to house the non-woven charged media 6.
  • FIG. 7 Shows a dual layered CLM filter consisting of the threaded top 1 with flow control grommet 45 and base side wall 41 snapped to top 1 by locking ring 42. Contained within the housing pleated CLM filter 4, has pleated CLM 46 nested inside, CLM 4 being radially
  • the inner tube includes two nested pleated CLM media filters, initially positioned radially by orienting bosses in the outer filter wall and inner center core, and potted to the housing top and base.
  • an activated alumina treated non-woven media compressed between the CLM layers as the means to maintain the separation between the nested CLM filter layers.
  • Figure 8 Shows the cross sectional view C - C where 41 is the base and side wall, 48 outer radial positioning Bosses, 49 (optional) expansion limiting posts, 50 inner CLM radial positioning posts, and inner CLM media pleated media filter 46, and outer CLM pleated media filter 4, potted and sealed in place 8, and forming the air void between the CLM layers 47.
  • FIG. 9 Shows a filter housing containing four filtration medias combined within a filter housing 41, which is attached to the top 1, by the locking and seal ring 42 with water entry port 43, permitting the influent water to flow over the entire surface of external CLM filter 4, passing through sandwiched non-woven filter 55, hence radially through internal CLM filter 46, where the water is directed by the external surface of the center tube 56, to the water transfer port 58 (4), after which the water is directed up through the internal media 57 which may be one of several medias that may be used, but shown as chipped particles of CLM, exiting the filter through the flow control grommet 45, and exiting the bottle not shown.
  • the CLM pleated filters 4 and 46 and center tube 56 are potted to the top 1 and base with side walls 41 by potting compound 8.
  • Figure 10 Represents the plan view D - D showing the base with outer housing 41, retaining the external pleated filter 4, the sandwiched non-woven media 55, and interior CLM filter 46, supported by center tube 56, containing chipped or particularized CLM media 57, and potting media 8 securing the pleated filters 4 and 46, as well as center tube 56.
  • the inner tube includes a pleated CLM media filter formed around an inner cylindrical core containing a CLM media cut and/or fabricated into particles of ⁇ lmm x 1mm x 0.8mm or larger in size, and/or including threads of CLM media of various lengths and minimum width of ⁇ lmm.
  • the pleated inner CLM filter may be eliminated placing and filling the internal void within the 2nd pleated CLM with the chipped CLM media, or an alternative media.

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)
  • Filtering Materials (AREA)

Abstract

L'invention concerne une bouteille de sport filtrant l'eau avec un système de filtration contenu dans le dessus. Le système inclut une bouteille de sport ayant un dessus de bouteille avec une ouverture de bouteille. Un dessus de boîtier circulaire (2) comporte une paroi supérieure cylindrique s'étendant vers le bas et une paroi de couplage cylindrique s'étendant vers le haut. Un bouchon de base circulaire (7) comporte une paroi inférieure cylindrique s'étendant vers le haut. Un filtre plissé intérieur CLM (5) comporte des extrémités supérieure et inférieure formant des régions radialement extérieure et intérieure. Un premier filtre (4) est localisé dans la région extérieure et un second filtre (6) est localisé dans la région intérieure. Des enduits de remplissage supérieur et inférieur (8) fixent le premier filtre au dessus du boîtier et au bouchon de base.
PCT/US2011/001045 2011-06-09 2011-06-09 Filtre biologique amélioré pour des bouteilles de sport WO2012169995A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2011/001045 WO2012169995A1 (fr) 2011-06-09 2011-06-09 Filtre biologique amélioré pour des bouteilles de sport

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2011/001045 WO2012169995A1 (fr) 2011-06-09 2011-06-09 Filtre biologique amélioré pour des bouteilles de sport

Publications (1)

Publication Number Publication Date
WO2012169995A1 true WO2012169995A1 (fr) 2012-12-13

Family

ID=47296313

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/001045 WO2012169995A1 (fr) 2011-06-09 2011-06-09 Filtre biologique amélioré pour des bouteilles de sport

Country Status (1)

Country Link
WO (1) WO2012169995A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6193886B1 (en) * 1998-08-11 2001-02-27 Innova Pure Water Inc. Sub-micron sport bottle with ceramic filtering element
US6569329B1 (en) * 1999-05-06 2003-05-27 Innova Pure Water Inc. Personal water filter bottle system
US20060157398A1 (en) * 1999-05-06 2006-07-20 Innova Pure Water, Inc. Biological filter on a tube
US7473362B1 (en) * 2008-02-21 2009-01-06 Nohren Jr John E Water treatment system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6193886B1 (en) * 1998-08-11 2001-02-27 Innova Pure Water Inc. Sub-micron sport bottle with ceramic filtering element
US6569329B1 (en) * 1999-05-06 2003-05-27 Innova Pure Water Inc. Personal water filter bottle system
US20060157398A1 (en) * 1999-05-06 2006-07-20 Innova Pure Water, Inc. Biological filter on a tube
US7473362B1 (en) * 2008-02-21 2009-01-06 Nohren Jr John E Water treatment system

Similar Documents

Publication Publication Date Title
US7473362B1 (en) Water treatment system
US6405875B1 (en) Water filtration device and method
US8439205B1 (en) Portable universal flow filter
US9764965B1 (en) Enhanced biological filters for sport bottles
US6454941B1 (en) Gravity-flow water filtration device
US6290847B1 (en) Gravity-flow water filtration device
AU2003231002B2 (en) Encapsulated filter cartridge
JP4726415B2 (ja) 微孔性濾材、それを含有する濾過システム、その製造法および使用
US20160250573A1 (en) Multi-layered composite filter media and pleated filter element constructed therefrom
US7150829B2 (en) Water treatment cartridges and processes related thereto
US20150101987A1 (en) Stacked plate-shaped composite membrane cartridge
CN103874660A (zh) 净水滤筒以及净水器
CN106045099A (zh) 多功能复合滤芯
US20120132575A1 (en) Foam water treatment system
JP4210001B2 (ja) 濾過フィルタおよび浄水器
US10099942B2 (en) Systems and methods of eliminating filter air locks
CA2881177A1 (fr) Filtre plisse
US9809462B2 (en) Portable pitcher for filtering and dispensing drinking water
US20130213872A1 (en) Treatment Devices and Methods
JP2000342917A (ja) 濾過フィルタおよび浄水器
WO2012168896A1 (fr) Système de filtration par percolation
US20220081338A1 (en) Systems and devices for eliminating filter air locks
CN102639446A (zh) 净水滤筒及净水器
WO2012169995A1 (fr) Filtre biologique amélioré pour des bouteilles de sport
US20030136724A1 (en) Water filtering device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11867275

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11867275

Country of ref document: EP

Kind code of ref document: A1

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载