ANTIMICROBIAL FILTER CARTRIDGE

• US 20080302713A1
• Filed: 06/04/2008
• Published: 12/11/2008
• Est. Priority Date: 06/05/2007
• Status: Abandoned Application

• Current Assignee: Gilbert Patrick
• Original Assignee: Gilbert Patrick
• Inventors: Patrick, Gilbert
• Application Number:
  US12/132,732
• Publication Number:
  US 20080302713A1
• Time in Patent Office: Days
• US Class Current: 210/234
• CPC Class Codes: B01D 2239/025 comprising nanofibres apparatus incorporating such gas filtering material see B01D46/546
• CPC Class Codes: B01D 2239/0407 comprising particulate additives, e.g. adsorbents apparatus incorporating gas filtering material B01D46/0036
• CPC Class Codes: B01D 2239/0442 Antimicrobial, antibacterial, antifungal additives apparatus incorporating such gas filtering material B01D46/0028
• CPC Class Codes: B01D 2239/065 More than one layer present in the filtering material apparatus incorporating such gas filtering material B01D2275/10
• CPC Class Codes: B01D 2313/44 Cartridge types
• CPC Class Codes: B01D 2321/00 Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
• CPC Class Codes: B01D 2321/281 by applying a special coating to the membrane or to any module element
• CPC Class Codes: B01D 65/08 Prevention of membrane fouling or of concentration polarisation
• CPC Class Codes: C02F 1/283 using coal, charred products, or inorganic mixtures containing them
• CPC Class Codes: C02F 1/444 by ultrafiltration or microfiltration
• CPC Class Codes: C02F 1/505 by oligodynamic treatment
• CPC Class Codes: C02F 2201/006 Cartridges

Abstract

An antimicrobial filter cartridge having a microporous core member about which is applied a yam which may be impregnated with a antimicrobial agent. The filter cartridge is sized so as to fit tightly into a cartridge housing of a fluid filtration system. Fluid passing through the cartridge housing will be filtered by the filter cartridge to remove bacteria and other contaminants from the water and which prevents the growth of bacterial and other microorganisms on the filter media.

Claims

1. An antimicrobial filter cartridge, comprising:

a composite micro porous core including a ceramic, activated carbon or plastic core member and a microporous membrane containing nanofibers applied to said core member; and

a criss-crossed wound yarn applied to said core member and treated with antimicobial additive selected from the group comprising silver (elemental silver or nanoparticle silver);

zinc;

silver-zinc-zeolite;

2,4,4′

-trichloro-2′

-hydroxydiphenyl ether;

diiodomethyl-4-tolylsulfone;

zinc 2-mercaptopyridine-N-alkyl-N,N-dimethyl-N-benzylammonium chloride;

sodium-O-phenylphenate;

1-5 pentanedial (Glutaraldehyde);

2,2-dibromo-3-nitrilopropionamide, poly(hexamethylene biguanide), and cis 1-(3-chloroallyl)-357-triaza-1-azoniaadamantane.

2. The antimicrobial filter cartridge of claim 1 and further comprising end caps applied to opposite ends of said core member to prevent by-pass of a fluid flow through said ends of said core member.

3. An antimicrobial filter cartridge comprising:

an inner micro porous core member having spaced, open ends and a series of pores of a defined porosity in the range of about 0.05 microns to about 5.0 microns between said ends;

a tightly criss-cross wound, antimicrobially treated yarn around said core member; and

end caps mounted at said ends of said core member to facilitate installation in a conventional housing and provide diversion and containment of unfiltered water through said yarn and said pores of said core tube.

4. The antimicrobial filter cartridge of claim 3, and wherein said antimicrobially-treated yarn further comprises an antimicrobial additive selected from the group comprising silver (elemental or nanoparticle silver with or without a substrate), zinc (elemental or nanoparticle), copper (elemental or nanoparticle), zinc almandine, silver-zinc-zeolite, 2,4,4′

-trichloro-2′

-hydroxydiphenyl ether, diiodomethyl-4-tolylsulfone, zinc 2-mercaptopyridine-N-oxide, N-alkyl-N,N-dimethyl-N-benzylammonium chloride, sodium-O-phenylphenate, 1-5pentanedial(Glutarraldehyde, 2,2-dibromo-3-nitrilopropionamide and cis 1-(3-chloroallyl)-357-triaza-1-azaniaadamantane.

5. The antimicrobial filter cartridge of claim 3 wherein said core member comprises a tubular member formed from activated carbon, ceramic, or a composite core comprising a perforated plastic tube surrounded with at least one wrapping of a microporous membrane including alumina or silver copper, zinc, carbon nanofibers, or mixtures thereof, polymeric materials, paper, metal, or combinations thereof.

6. The antimicrobial filter cartridge of claim 3, wherein said antimicrobially treated yarn comprises a yarn selected from the group consisting essentially of nylon, polypropylene, acrylic, polyester, polyethylene, polylacticacid, polyvinylchloride, microglass fibers, polyvinyl alcohol, polysulfone, polytrimethyleneterephthalate, and mixtures thereof.

7. The antimicrobial filter cartridge of claim 3 and wherein said core member further comprises an antimicrobial additive selected from the group comprising silver (elemental or nanoparticle silver with or without a substrate), zinc (elemental or nanoparticle), copper (elemental or nanoparticle), zinc almandine, silver-zinc-zeolite, 2,4,4′

-trichloro-2′

-hydroxydiphenyl ether, diiodomethyl-4-tolylsulfone, zinc 2-mercaptopyridine-N-oxide, N-alkyl-N,N-dimethyl-N-benzylammonium chloride, sodium-O-phenylphenate, 1-5pentanedial(Glutarraldehyde, 2,2-dibromo-3-nitrilopropionamide and cis 1-(3-chloroallyl)-357-triaza-1-azaniaadamantane.

8. An antimicrobial filter cartridge comprising an inner micro porous composite core member having at least one wall having a series of pores of a defined porosity in a range of about 0.05 to about 5.0 microns and spaced ends;

a microporous membrane applied to said core member;

an antimicrobially treated non-woven fabric tightly applied about said core member; and

end caps mounted about said spaced ends of said core member to provide diversion and containment of unfiltered water through said fabric and said pores of said core member.

9. The antimicrobial filter cartridge of claim 8, and wherein said non-woven fabric further comprises an antimicrobial additive selected from the group comprising silver (elemental or nanoparticle silver with or without some substrate), zinc (elemental or nanoparticle), copper (elemental or nanoparticle), zinc almandine, silver-zinc-zeolite, 2,4,4′

-trichloro-2′

-hydroxydiphenyl ether, diiodomethyl-4-tolylsulfone, zinc 2-mercaptopyridine-N-oxide, N-alkyl-N,N-dimethyl-N-benzylammonium chloride, sodium-O-phenylphenate, 1-5pentanedial(Glutarraldehyde, 2,2-dibromo-3-nitrilopropionamide and cis 1-(3-chloroallyl)-357-triaza-1-azaniaadamantane.

10. The antimicrobial filter cartridge of claim 8 wherein said core member is selected from the group comprising activated carbon, ceramic, polymeric materials, paper, and metal.

11. The antimicrobial filter cartridge of claim 8 wherein said non-woven fabric wrap comprises at least one member selected from the group comprising nylon, polypropylene, acrylic, polyester, polyethylene, polylacticacid, polyvinylchloride, polyvinylalcohol, polysulfone, polytrimethyleneterephthalate, and mixtures thereof.

12. The antimicrobial filter cartridge of claim 10 and wherein said core member further comprises an antimicrobial additive selected from the group comprising silver (elemental or nanoparticle silver with or without a substrate), zinc (elemental or nanoparticle), copper (elemental or nanoparticle), zinc almandine, silver-zinc-zeolite, 2,4,4′

-trichloro-2′

-hydroxydiphenyl ether, diiodomethyl-4-tolylsulfone, zinc 2-mercaptopyridine-N-oxide, N-alkyl-N,N-dimethyl-N-benzylammonium chloride, sodium-O-phenylphenate, 1-5pentanedial(Glutarraldehyde, 2,2-dibromo-3-nitrilopropionamide and cis 1-(3-chloroallyl)-357-triaza-1-azaniaadamantane.

13. An antimicrobial filter cartridge comprising an inner microporous core member having a plurality of pores of about 0.05 to about 5.0 microns formed therethrough and spaced open ends;

an antimicrobially-treated fabric comprising an activated granular carbon material bonded between layers of a non-woven substrate wound tightly around said core member; and

, end caps applied to said ends of said core member.

14. The antimicrobial filter cartridge of claim 13, and wherein said carbon-composite non-woven fabric wrap further comprises an antimicrobial additive selected from the group consisting essentially of silver (elemental or nanoparticle silver with or without a substrate), zinc (elemental or nanoparticle), copper (elemental or nanoparticle), zinc almandine, silver-zinc-zeolite, 2,4,4′

-trichloro-2′

-hydroxydiphenyl ether, diiodomethyl-4-tolylsulfone, zinc 2-mercaptopyridine-N-oxide, N-alkyl-N,N-dimethyl-N-benzylammonium chloride, sodium-O-phenylphenate, 1-Spentanedial(Glutarraldehyde, 2,2-dibromo-3-nitrilopropionamide and cis 1-(3-chloroallyl)-357-triaza-1-azaniaadamantane.

15. The antimicrobial filter cartridge of claim 13 wherein said core member comprises activated carbon, ceramic, polymeric materials, paper, or metal.

16. The antimicrobial filter cartridge of claim 13 wherein said non-woven substrate comprises nylon, polypropylene, acrylic, polyester, polyethylene, polylacticacid, polyvinylchloride, polyvinylalcohol, polysulfone, polytrimethyleneterephthalate, and mixtures thereof.

17. The antimicrobial filter cartridge of claim 16 and wherein said core member further comprises an antimicrobial additive selected from the group comprising silver (elemental or nanoparticle silver with or without a substrate), zinc (elemental or nanoparticle), copper (elemental or nanoparticle), zinc almandine, silver-zinc-zeolite, 2,4,4′

-trichloro-2′

-hydroxydiphenyl ether, diiodomethyl-4-tolylsulfone, zinc 2-mercaptopyridine-N-oxide, N-alkyl-N,N-dimethyl-N-benzylammonium chloride, sodium-O-phenylphenate, 1-5pentanedial(Glutarraldehyde, 2,2-dibromo-3-nitrilopropionamide and cis 1-(3-chloroallyl)-357-triaza-1-azaniaadamantane.