[특허]Water treating methods

The Procter & Gamble Company

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Water treating methods

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-037/00 B01D-035/00 B01D-039/00 B01D-027/00 B01D-029/00
미국특허분류(USC)	210/767; 210/257.1; 210/266; 210/282; 210/473; 210/501; 210/502.1; 210/504; 210/505; 210/649; 210/692; 210/694
출원번호	UP-0465159 (2009-05-13)
등록번호	US-7850859 (2011-02-10)
발명자 / 주소	Tanner, John D. Emmons, David James Riedel, Richard P. Mitchell, Michael Donovan Collias, Dimitris Ioannis
출원인 / 주소	The Procter & Gamble Company
대리인 / 주소	Clay, Cynthia L.
인용정보	피인용 횟수 : 10 인용 특허 : 436

초록
▼

A method of treating low-pressure untreated drinking water includes providing a low-pressure water filter device, running low-pressure untreated drinking water from a source of low-pressure untreated drinking water through a low-pressure water filter of the low-pressure water filter device, removing bacteria and viruses from the low pressure untreated drinking water at a level of Filter Bacteria Log Removal of greater than about 2 logs and a Filter Viruses Log Removal of greater than about 1 log, and filling a storage housing with treated drinking water at greater than about 5 mL/min. The low-pressure water filter device may include a connector for connecting to an untreated drinking water source, a low-pressure water filter comprising mesoporous activated carbon particles and a storage housing. The average fluid contact time with the low-pressure water filter may be greater than about 2 seconds.

대표
청구항
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What is claimed is: 1. A method of treating low-pressure untreated water, said method comprising: (a) passing low-pressure untreated water from a source of low-pressure untreated water through a low-pressure water filter device, such that the average fluid contact time is greater than about 2 seconds, the low-pressure water filter device comprises a storage housing and mesoporous activated carbon filter particles, wherein (i) a sum of mesopore and macropore volumes of the mesoporous activated carbon filter particles is between about 0.2 mL/g and about 2 mL/g, wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm, and (ii) a total pore volume of the mesoporous activated carbon filter particles is greater than about 0.4 mL/g and less than about 3 mL/g; (b) removing bacteria and viruses from the low-pressure untreated water with the low-pressure water filter at a level of Filter Bacteria Log Removal of greater than about 2 logs and a Filter Viruses Log Removal of greater than about 1 log to produce treated drinking water; and (c) filling the storage housing with treated drinking water at a rate greater than about 5 mL/min. 2. The method of claim 1, wherein the mesoporous activated carbon filter particles comprise mesoporous and basic activated carbon filter particles. 3. The method of claim 1, wherein the step of removing the bacteria and viruses from the low-pressure untreated water comprises removing bacteria and viruses with the low-pressure water filter at a level of Filter Bacteria Log Removal of greater than about 3 logs and a Filter Viruses Log Removal of greater than about 2 logs. 4. The method of claim 1, wherein the step of removing the bacteria and viruses from the low-pressure untreated water comprises removing bacteria and viruses with the low-pressure water filter at a level of Filter Bacteria Log Removal of greater than about 4 logs and a Filter Viruses Log Removal of greater than about 3 logs. 5. The method of claim 1, further comprising a step of passing the low pressure untreated water through a prefilter prior to passing the low-pressure untreated water through the low-pressure water filter, wherein the prefilter is selected from the group consisting of melt-blown polypropylene, non-woven polymer, micro-glass fiber, and non-woven cellulose filter material. 6. The method of claim 1, wherein a ratio of a sum of mesopore and macropore volumes to a total pore volume of mesoporous activated carbon filter particles is greater than about 0.3. 7. The method of claim 1, further comprising a step of arresting the filling of the storage housing with treated drinking water when an automatic shutoff valve on the low-pressure water filter device is activated. 8. The method of claim 7, wherein the automatic shutoff valve comprises a float. 9. The method of claim 1, further comprising a step of dispensing the treated drinking water through utilization of a dispenser in fluid communication with the storage housing. 10. The method of claim 1, wherein the low-pressure water filter device is a non-electric water filter device. 11. The method of claim 1, wherein the low-pressure water filter device further comprises a flow regulator, wherein the flow regulator regulates the flow of the untreated water such that the average fluid contact time is greater than about 2 seconds up to about 120 psi. 12. The method of claim 11, wherein the flow regulator regulates the flow of the untreated water such that the average fluid contact time is greater than about 4 seconds up to about 120 psi. 13. A method of treating low-pressure untreated drinking water, said method comprising: (a) providing a low-pressure water filter device comprising: (i) a connector for providing fluid communication between said low-pressure water filter device and an untreated drinking water source; (ii) a low-pressure water filter in fluid communication with said connector, said low-pressure water filter comprising a water filter material, said water filter material comprising filter particles consisting of mesoporous activated carbon; (iii) a storage housing in fluid communication with said low-pressure water filter, said storage housing utilized for storing treated drinking water treated by said low-pressure water filter; (iv) an automatic shutoff valve in fluid communication with said storage housing, said automatic shutoff valve utilized for arresting the flow of treated drinking water into said storage housing; (v) a dispenser in fluid communication with said storage housing, said dispenser utilized for dispensing treated drinking water from said storage housing; (vi) wherein a sum of mesopore and macropore volumes of said filter particles is between about 0.2 mL/g and about 2 mL/g, wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm; (vii) wherein a total pore volume of said filter particles is greater than about 0.4 mL/g and less than about 3 mL/g; and (viii) wherein a ratio of the sum of mesopore and macropore volumes to the total pore volume of said filter particles is greater than about 0.3; and (b) passing low-pressure untreated drinking water from a source of low-pressure untreated drinking water containing bacteria and viruses through said low-pressure water filter, such that the average fluid contact time is greater than about 2 seconds; (c) removing bacteria and viruses from the low-pressure untreated drinking water with the low-pressure water filter at a level of Filter Bacteria Log Removal of greater than about 2 logs and a Filter Viruses Log Removal of greater than about 1 log; (d) filling said storage housing with treated drinking water at the rate of at least about 5 mL/min but not greater than about 2,000 mL/min until activating said automatic shutoff valve; and (e) arresting the flow of said treated drinking water when automatic shutoff valve is activated, such that the flow of treated drinking water into said storage housing is arrested; wherein said water filter device is a non-electric water filter device, and wherein said water filter device is operable to remove microorganisms from said untreated drinking water flowing into said connector and out of said low-pressure water filter. 14. The method of claim 13, wherein the mesoporous activated carbon comprises mesoporous and basic activated carbon particles. 15. The method of claim 13, wherein the step of removing the bacteria and viruses from the low-pressure untreated drinking water comprises removing bacteria and viruses with the low pressure water filter at a level of Filter Bacteria Log Removal of greater than about 3 logs and a Filter Viruses Log Removal of greater than about 2 logs. 16. The method of claim 15, wherein the step of removing the bacteria and viruses from the low-pressure untreated drinking water comprises removing bacteria and viruses with the low pressure water filter at a level of Filter Bacteria Log Removal of greater than about 4 logs and a Filter Viruses Log Removal of greater than about 3 logs. 17. The method of claim 13, further comprising a step of passing the low pressure untreated drinking water through a prefilter prior to passing the low pressure untreated drinking water through said low pressure water filter, wherein said prefilter is selected from the group consisting of melt-blown polypropylene, non-woven polymer, micro-glass fiber, and non-woven cellulose filter material. 18. The method of claim 13, wherein the automatic shutoff valve comprises a float. 19. The method of claim 13, wherein the low-pressure water filter device further comprises a flow regulator, wherein the flow regulator regulates the flow of the untreated drinking water such that the average fluid contact time is greater than about 2 seconds up to about 120 psi. 20. The method of claim 19, wherein the flow regulator regulates the flow of the untreated drinking water such that the average fluid contact time is greater than about 4 seconds up to about 120 psi. 21. The method of claim 13, further comprising a step of dispensing the treated drinking water through utilization of a dispenser in fluid communication with the storage housing. 22. A method of treating low-pressure untreated water, said method comprising: (a) connecting a low-pressure water filter to a source of low-pressure untreated water using a connector; (b) passing low-pressure untreated water from a source of low-pressure untreated water through the low-pressure water filter device, such that the average fluid contact time is greater than about 2 seconds, the low-pressure water filter device comprises a storage housing and mesoporous activated carbon filter particles, wherein (i) a sum of mesopore and macropore volumes of the mesoporous activated carbon filter particles is between about 0.2 mL/g and about 2 mL/g, wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm, (ii) a total pore volume of the mesoporous activated carbon filter particles is greater than about 0.4 mL/g and less than about 3 mL/g, and (iii) a ratio of the sum of mesopore and macropore volumes to the total pore volume of the mesoporous activated carbon filter particles is greater than about 0.3; (c) removing bacteria and viruses from the low-pressure untreated water with the low-pressure water filter at a level of Filter Bacteria Log Removal of greater than about 2 logs and a Filter Viruses Log Removal of greater than about 1 log; and (d) filling the storage housing with treated drinking water at a rate greater than about 5 mL/min. 23. The method of claim 22, further comprising a step of arresting the filling of the storage housing with treated drinking water when an automatic shutoff valve on the low-pressure water filter device is activated.

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Water treating methods

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Water treating methods

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