JP2000015065A - Hollow fiber membrane carrying catalyst - Google Patents
Hollow fiber membrane carrying catalystInfo
- Publication number
- JP2000015065A JP2000015065A JP18856498A JP18856498A JP2000015065A JP 2000015065 A JP2000015065 A JP 2000015065A JP 18856498 A JP18856498 A JP 18856498A JP 18856498 A JP18856498 A JP 18856498A JP 2000015065 A JP2000015065 A JP 2000015065A
- Authority
- JP
- Japan
- Prior art keywords
- hollow fiber
- fiber membrane
- catalyst
- photocatalyst
- water
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 60
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 59
- 239000003054 catalyst Substances 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000011941 photocatalyst Substances 0.000 claims abstract description 37
- 244000005700 microbiome Species 0.000 claims abstract description 24
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 11
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000003197 catalytic effect Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 6
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 230000001699 photocatalysis Effects 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract description 5
- 239000010949 copper Substances 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 5
- 229910052709 silver Inorganic materials 0.000 abstract description 5
- 239000004332 silver Substances 0.000 abstract description 5
- 239000004408 titanium dioxide Substances 0.000 abstract description 4
- 230000002378 acidificating effect Effects 0.000 abstract description 3
- 239000008234 soft water Substances 0.000 abstract description 3
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 abstract description 2
- 239000005083 Zinc sulfide Substances 0.000 abstract description 2
- 229910052980 cadmium sulfide Inorganic materials 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052984 zinc sulfide Inorganic materials 0.000 abstract description 2
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 102100024059 A-kinase anchor protein 8-like Human genes 0.000 description 1
- 102100032566 Carbonic anhydrase-related protein 10 Human genes 0.000 description 1
- 102100033029 Carbonic anhydrase-related protein 11 Human genes 0.000 description 1
- 101000833668 Homo sapiens A-kinase anchor protein 8-like Proteins 0.000 description 1
- 101000867836 Homo sapiens Carbonic anhydrase-related protein 10 Proteins 0.000 description 1
- 101000867841 Homo sapiens Carbonic anhydrase-related protein 11 Proteins 0.000 description 1
- 101001075218 Homo sapiens Gastrokine-1 Proteins 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、浄化，抗菌，防汚
等の機能が要求される清潔・衛生志向の機器、特に浄水
器，アルカリイオン水や酸性水および軟水を生成する整
水器，水改質器等に用いられる微生物や有機系異物を捕
獲する中空糸膜およびそれを利用した中空糸膜フルター
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clean and sanitary equipment which requires functions such as purification, antibacterial and antifouling, especially a water purifier, a water purifier for producing alkaline ionized water, acidic water and soft water, The present invention relates to a hollow fiber membrane used for a water reformer and the like, which captures microorganisms and organic foreign substances, and a hollow fiber membrane filter using the same.
【０００２】[0002]
【従来の技術】たとえば、雑誌工業材料（Ｖol．４５、
No．１０／１９９７年１０月号）の２８ページ（東大／
藤嶋教授著）に記載されているように、光触媒の最も大
きな特性の一つは表面反応であり、空気や水等の流体中
の物質が光触媒の表面に来て、接触して初めて光触媒反
応の対象となる。このため、光触媒機能を効率的に発揮
させるには、物質が接触する光触媒の表面積をできる限
り大きくすることが非常に重要である。2. Description of the Related Art For example, magazine industrial materials (Vol. 45,
No. 28 pages of October / October 1997 issue)
As described by Prof. Fujishima), one of the biggest characteristics of photocatalyst is surface reaction. When a substance in a fluid such as air or water comes to the surface of the photocatalyst and contacts it, Be eligible. For this reason, it is very important to increase the surface area of the photocatalyst in contact with the substance as much as possible in order to exhibit the photocatalytic function efficiently.
【０００３】この点を考慮した光触媒の担持に関する従
来技術として、たとえば特開平1−234729号公報および
特開平8−99041号公報がある。[0003] As a prior art relating to the loading of a photocatalyst in consideration of this point, there are, for example, JP-A-1-234729 and JP-A-8-99041.
【０００４】[0004]
【発明が解決しようとする課題】上記従来技術の特開平
1−234729 号公報では、光触媒（二酸化チタン系）をハ
ニカム状の活性炭に担持している。また、特開平8−990
41号公報では、光触媒（二酸化チタン系）を多孔質の薄
膜に構成している。これらの従来技術では、表面積の拡
大化が図られ、流体中の微生物や有機系異物の分解には
有効であるが、流体中の微生物や有機系異物を積極的に
捕獲する手段は採られていない。つまり、光触媒表面で
捕獲されなかった（接触しなかった）流体中の微生物や
有機系異物は、そのまま素通りしてしまう。SUMMARY OF THE INVENTION The above prior art is disclosed in
In JP-A-234729, a photocatalyst (titanium dioxide-based) is supported on honeycomb-shaped activated carbon. Also, JP-A-8-990
In Japanese Patent Publication No. 41, a photocatalyst (titanium dioxide) is formed into a porous thin film. In these prior arts, the surface area is increased, which is effective for decomposing microorganisms and organic foreign substances in the fluid, but means for actively capturing the microorganisms and organic foreign substances in the fluid is employed. Absent. In other words, microorganisms and organic foreign substances in the fluid not captured (not contacted) on the photocatalyst surface pass through as they are.
【０００５】本発明の目的は、光触媒等の触媒の表面積
の広大化を図ると共に、流体中の微生物や有機系異物を
積極的に捕獲する手段も具備し、該流体中の微生物や有
機系異物をほぼ完全に捕獲し、該捕獲した微生物や有機
系異物を効率よく分解処理（浄化，殺菌・抗菌，脱臭
等）することである。SUMMARY OF THE INVENTION It is an object of the present invention to increase the surface area of a catalyst such as a photocatalyst, and to provide a means for positively capturing microorganisms and organic foreign substances in a fluid. Is almost completely captured, and the captured microorganisms and organic foreign substances are efficiently decomposed (purified, sterilized / antibacterial, deodorized, etc.).
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明では、表面に多数の微細孔を有する中空糸膜
の表面および／または該微細孔内面に該中空糸膜で捕獲
した流体中の微生物や有機系異物を分解処理する触媒を
担持した。該触媒は光触媒等で構成される。さらに、該
触媒を担持した中空糸膜を多数束ねて中空糸膜フィルタ
ーを構成し、該中空糸膜の微細孔で飲料水等の水を浄化
すると共に、該中空糸膜の微細孔で捕獲した微生物や有
機系異物を該触媒により分解処理した。According to the present invention, in order to achieve the above object, the present invention relates to a hollow fiber membrane having a large number of micropores on its surface and / or a fluid captured on the inner surface of the micropores by the hollow fiber membrane. And a catalyst for decomposing microbes and organic foreign substances. The catalyst is composed of a photocatalyst or the like. Furthermore, a number of hollow fiber membranes carrying the catalyst were bundled to form a hollow fiber membrane filter, and water such as drinking water was purified by the fine holes of the hollow fiber membrane and captured by the fine holes of the hollow fiber membrane. Microorganisms and organic foreign substances were decomposed with the catalyst.
【０００７】[0007]
【発明の実施の形態】以下、本発明の一実施例に係る触
媒担持中空糸膜の構造を、図１以降の図をもとに説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a catalyst-carrying hollow fiber membrane according to one embodiment of the present invention will be described below with reference to FIGS.
【０００８】図１は触媒を担持した中空糸膜の部分斜視
図で、１が中空糸膜、２がその表面に開けられた多数の
微細孔で、３が該中空糸膜１の表面および微細孔２の内
面にまで担持した触媒である。１ａは中空糸膜の外側、
１ｂは中空糸膜の内側を示している。図２は、図１の部
分断面図で、微細孔２の二つ分を示している。FIG. 1 is a partial perspective view of a hollow fiber membrane supporting a catalyst, 1 is a hollow fiber membrane, 2 is a large number of fine holes formed in the surface thereof, and 3 is the surface of the hollow fiber membrane 1 and fine pores. The catalyst is supported on the inner surface of the hole 2. 1a is the outside of the hollow fiber membrane,
1b shows the inside of the hollow fiber membrane. FIG. 2 is a partial cross-sectional view of FIG.
【０００９】ここで、表面に担持する触媒３としては光
触媒がよいが、該光触媒に触媒機能を発揮させるには光
が必要になる。たとえば、光触媒として酸化チタン（二
酸化チタン）を用いると、光として波長が４００ナノメ
ートル（ｎｍ）、望ましくは３８０ナノメートル以下の
紫外線が必要になる。該紫外線は、紫外線ランプ，ブラ
ックライト等で当然得られるが、太陽光や蛍光灯にも若
干量含まれているので、それを利用することもできる。
なお、酸化チタン以外の光触媒を利用することも当然可
能で、その場合必要な光の波長域は酸化チタンとは異な
ることになり、利用する光触媒に応じて適切な波長域の
光を照射しなければならない。酸化チタン以外の光触媒
としては、硫化亜鉛，硫化カドミウム，酸化第二鉄等が
ある。Here, the catalyst 3 supported on the surface is preferably a photocatalyst, but light is required for the photocatalyst to exert its catalytic function. For example, when titanium oxide (titanium dioxide) is used as a photocatalyst, ultraviolet light having a wavelength of 400 nanometers (nm), preferably 380 nanometers or less, is required as light. The ultraviolet rays can be naturally obtained by an ultraviolet lamp, a black light, or the like, but the sunlight or the fluorescent lamp is also contained in a small amount, so that it can be used.
It is naturally possible to use a photocatalyst other than titanium oxide, in which case the necessary wavelength range of light will be different from that of titanium oxide, and light of an appropriate wavelength range must be irradiated according to the photocatalyst to be used. Must. Photocatalysts other than titanium oxide include zinc sulfide, cadmium sulfide, and ferric oxide.
【００１０】また、光が得にくい状況では、表面に担持
する触媒３として銀系や銅系等の金属系触媒を利用して
もよい。この場合、光触媒に比べると触媒機能（微生物
等の分解能）が劣る場合が多いが、該銀系や銅系の触媒
では光がなくても触媒機能を発揮させることができる。
なお、光触媒と銀系や銅系の触媒３を混合して中空糸膜
１の表面に担持してもよい。この場合、光が得られる場
合は光触媒が効率よく働き、光が得られない場合は銀系
や銅系触媒が働き、常に触媒機能を発揮させることがで
きる。In a situation where it is difficult to obtain light, a metal catalyst such as a silver catalyst or a copper catalyst may be used as the catalyst 3 supported on the surface. In this case, the catalytic function (resolution of microorganisms and the like) is often inferior to the photocatalyst, but the silver-based or copper-based catalyst can exert its catalytic function without light.
The photocatalyst and the silver-based or copper-based catalyst 3 may be mixed and supported on the surface of the hollow fiber membrane 1. In this case, when light can be obtained, the photocatalyst works efficiently, and when light cannot be obtained, a silver-based or copper-based catalyst works, and the catalyst function can always be exerted.
【００１１】中空糸膜１の表面および微細孔２の内面に
触媒３を担持する方法は特に制限されるものではない
が、スプレー，コーティング，被覆等による担持法でよ
い。また、場合によっては、中空糸膜１を構成する材料
内に触媒３を直接練り込んでもよい。中空糸膜１の材料
としては、ポリプロピレン，ポリエチレン，ポリスルフ
ォン等の樹脂製繊維でもよい。また、該触媒３は、中空
糸膜１の表面と微細孔２の内面にまですべて担持するの
が最も望ましいが、状況によってはいずれか一方のみで
あってもよい。The method of supporting the catalyst 3 on the surface of the hollow fiber membrane 1 and the inner surface of the micropores 2 is not particularly limited, but may be a supporting method such as spraying, coating and coating. In some cases, the catalyst 3 may be directly kneaded into the material constituting the hollow fiber membrane 1. As a material of the hollow fiber membrane 1, resin fibers such as polypropylene, polyethylene, and polysulfone may be used. It is most desirable that the catalyst 3 be supported on both the surface of the hollow fiber membrane 1 and the inner surface of the micropores 2. However, depending on the situation, only one of them may be supported.
【００１２】次に、図３を用いて本発明の作用を述べ
る。図３は図１に示す中空糸膜１の片側断面図である。
今、一例として、中空糸膜１表面を流れる流体として水
を、また触媒３として光触媒（酸化チタン等）を考え
る。図３において、対象となる微生物や有機系異物５を
含んだ水４が、水圧等により中空糸膜外側１ａを右側か
ら左へ向かって流れながら、多数の微細孔２を通過後、
中空糸膜内側１ｂに流れ込むとすると、微生物や有機系
異物５は微細孔２およびその付近で積極的に捕獲され
る。図において、５ａは微細孔２内で、５ｂは微細孔２
入り口で、５ｃは微細孔２間で捕獲された様子を示して
いる。Next, the operation of the present invention will be described with reference to FIG. FIG. 3 is a one-side sectional view of the hollow fiber membrane 1 shown in FIG.
Now, as an example, consider water as a fluid flowing on the surface of the hollow fiber membrane 1 and a photocatalyst (such as titanium oxide) as the catalyst 3. In FIG. 3, water 4 containing the target microorganisms and organic foreign matter 5 flows from the right side to the left side of the hollow fiber membrane 1a by water pressure or the like, and after passing through many micropores 2,
When flowing into the inside 1b of the hollow fiber membrane, microorganisms and organic foreign matter 5 are actively captured in the micropore 2 and its vicinity. In the figure, 5a is in the fine hole 2 and 5b is in the fine hole 2.
At the entrance, reference numeral 5c indicates a state captured between the fine holes 2.
【００１３】一般に、中空糸膜１の直径は０.４ ミリメ
ートル（mm）前後で、その表面に開けられる微細孔２の
大きさは概略０.０１から０.５マイクロメートルであ
り、これに対し微生物や有機系異物５の大きさは概略
０.２ から数マイクロメートルのオーダであるため、該
水中の微生物や有機系異物５は該微細孔２で強制的に、
かつほぼ完全に捕獲される。In general, the diameter of the hollow fiber membrane 1 is about 0.4 millimeter (mm), and the size of the micropores 2 formed in the surface thereof is approximately 0.01 to 0.5 micrometers. Since the size of the microorganisms and organic foreign matter 5 is on the order of about 0.2 to several micrometers, the microorganisms and organic foreign matter 5 in the water are forcibly forced through the micropores 2.
And almost completely captured.
【００１４】従来の中空糸膜１では、その表面等に触媒
が担持されていないので、前記捕獲した微生物や有機系
異物５はそのまま微細孔２の付近および中空糸膜１の表
面に留まり、微生物５の繁殖の危険性があり、さらに短
い周期の定期的なメンテナンスや交換が必要になる。In the conventional hollow fiber membrane 1, since no catalyst is supported on the surface or the like, the captured microorganisms and organic foreign substances 5 remain near the micropores 2 and on the surface of the hollow fiber membrane 1 as they are. There is a danger of breeding 5 and requires even shorter periodic maintenance and replacement.
【００１５】しかし、本発明では、中空糸膜１の表面お
よび微細孔２の内面に光触媒３が担持されているので、
外部から到達する光６により光触媒機能が発揮され、該
中空糸膜１で強制的に捕獲された水４中の微生物や有機
系異物５が効率よく分解され、微生物５等の繁殖の危険
性は極めて少なくなる。However, in the present invention, since the photocatalyst 3 is supported on the surface of the hollow fiber membrane 1 and the inner surface of the micropores 2,
The photocatalyst function is exhibited by the light 6 arriving from the outside, and the microorganisms and organic foreign substances 5 in the water 4 forcibly captured by the hollow fiber membrane 1 are efficiently decomposed, and the danger of propagation of the microorganisms 5 and the like is high. Extremely low.
【００１６】なお、通水中（水使用時）だけでなく止水
後も持続して光６が該光触媒３に届く構成にしておけ
ば、その間も上記光触媒３の分解・殺菌作用が継続して
行われ、より効果的である。ここで、光触媒として酸化
チタンを用いた場合、光６として波長が約３８０ナノメ
ートル以下の紫外線を含んだ光線を照射する。If the light 6 reaches the photocatalyst 3 not only during the passage of water (when water is used) but also after the water is stopped, the decomposition / sterilization of the photocatalyst 3 continues during that time. Done and more effective. Here, when titanium oxide is used as the photocatalyst, the light 6 is irradiated with a light beam containing ultraviolet light having a wavelength of about 380 nm or less.
【００１７】図４は本発明の他の実施例で、図２のＡ部
に相当する。触媒３として粒子径が１０ナノメートルの
オーダの超微粒子状の光触媒３ａを担持した例である。FIG. 4 shows another embodiment of the present invention, and corresponds to a portion A in FIG. This is an example in which an ultrafine photocatalyst 3a having a particle diameter of the order of 10 nanometers is supported as the catalyst 3.
【００１８】図５は本発明の他の実施例で、中空糸膜１
を多数(たとえば数百本から数千本)束ねて構成した中空
糸膜フィルター７を密閉された容器８（カートリッジ）
内に収納した浄水器用カートリッジフィルターである。
９は対象水４の処理前水流入口、１０は処理後水流出口
であり、該カートリッジフィルター８内の中空糸膜フィ
ルター７で微生物５等の積極的捕獲と、効率よい分解処
理が行われる。FIG. 5 shows another embodiment of the present invention.
A container 8 (cartridge) in which a hollow fiber membrane filter 7 configured by bundling (for example, several hundred to several thousand)
It is a cartridge filter for water purifier stored inside.
Reference numeral 9 denotes a water inlet before the treatment of the target water 4, and 10 denotes a water outlet after the treatment. The hollow fiber membrane filter 7 in the cartridge filter 8 actively captures the microorganisms 5 and the like and performs an efficient decomposition treatment.
【００１９】このため、従来のような捕獲だけのカート
リッジフィルターに比べフィルターの長寿命化が可能と
なり、交換形のカートリッジフィルターでは交換周期を
長くできる。このように中空糸膜フィルター７を構成す
ると、中空糸膜１の面積をかなり広くとることができ、
その表面および微細孔２の内面に担持する光触媒の全表
面積も大幅な広大化が図れる。For this reason, the life of the filter can be made longer than that of a conventional cartridge filter which only captures, and the replacement cycle can be made longer with an exchangeable cartridge filter. When the hollow fiber membrane filter 7 is configured as described above, the area of the hollow fiber membrane 1 can be considerably increased,
The entire surface area of the photocatalyst supported on the surface and the inner surface of the micropores 2 can be greatly increased.
【００２０】ここで、図のように触媒３として光触媒を
利用すると、外部から光６の照射が必要になるので、該
容器８は光触媒に触媒機能を発揮させる光６（たとえば
紫外線）を容易に透過させる透過率のよい材質で構成す
る必要がある。さらに、あわせて、中空糸膜１の汚れ具
合が外部から観察できるように、該容器８は光の透過率
のよい材質であって、かつ透明な材質であってもよい。
一例として、透明なプラスチックやガラスでもよい。Here, if a photocatalyst is used as the catalyst 3 as shown in the figure, irradiation of the light 6 from the outside is necessary, so that the container 8 easily emits the light 6 (for example, ultraviolet light) which causes the photocatalyst to exert a catalytic function. It is necessary to be made of a material having a good transmittance for transmission. In addition, the container 8 may be made of a material having a high light transmittance and a transparent material so that the degree of contamination of the hollow fiber membrane 1 can be observed from the outside.
As an example, transparent plastic or glass may be used.
【００２１】なお、該カートリッジフィルター８内に
は、光触媒３を担持した中空糸膜フィルター７だけでな
く、大きな汚れを採る不織布フィルターや活性炭等の浄
化手段を合わせて設けてもよい。この場合、該浄化手段
にも抗菌材等を被覆，担持するのがよい。The cartridge filter 8 may be provided with not only the hollow fiber membrane filter 7 carrying the photocatalyst 3 but also a purifying means such as a non-woven fabric filter for removing large dirt or activated carbon. In this case, it is preferable to coat and carry the antibacterial material or the like also on the purifying means.
【００２２】図６は図５の該カートリッジフィルター８
を水道の蛇口１１に固定する浄水器１２に取り付けた実
施例で、１３は該カートリッジフィルター８を収納する
カセットである。該カートリッジフィルター８は交換可
能になっている。蛇口直結型浄水器１２の形状は前記形
状に制限されない。また、水道蛇口直結でなく、据え置
き型やビルトイン型であってもよいし、水道に連結しな
いポット型および携帯型，災害・非常用浄水器等であっ
ても差し支えない。FIG. 6 shows the cartridge filter 8 of FIG.
Is attached to a water purifier 12 which is fixed to a tap 11 of a water supply, and 13 is a cassette for accommodating the cartridge filter 8. The cartridge filter 8 is replaceable. The shape of the tap water purifier 12 is not limited to the above shape. Instead of being directly connected to a water tap, it may be of a stationary type or a built-in type, or may be a pot type not connected to water supply, a portable type, a disaster / emergency water purifier, or the like.
【００２３】該中空糸膜フィルター７を容器８内に収納
した図５のようなカートリッジフィルターは、浄水器だ
けでなく、アルカリイオン水や酸性水および軟水を生成
する整水器や水改質器等にも利用でき、さらに中空糸膜
１や微細孔２の大きさ、直径を用途に合わせて選定すれ
ば排水浄化等の水処理にも応用できる。The cartridge filter as shown in FIG. 5 in which the hollow fiber membrane filter 7 is housed in a container 8 is not only a water purifier but also a water conditioner or a water reformer for producing alkaline ionized water, acidic water and soft water. If the size and the diameter of the hollow fiber membrane 1 and the micropores 2 are selected according to the application, it can be applied to water treatment such as wastewater purification.
【００２４】[0024]
【発明の効果】本発明によれば、多数の微細孔２を有す
る中空糸膜１の表面および該微細孔２の内面に触媒機能
を発揮する光触媒等の触媒３が担持されているため、流
体中の微生物や小さな有機系異物５および汚れ，かび，
異物等が該中空糸膜１で積極的に捕獲され、かつ、捕獲
により触媒３の表面に接触している微生物や有機系異物
５は触媒機能により効率よく分解処理されるので、中空
糸膜１の使用寿命を従来より長くできる。According to the present invention, since the surface of the hollow fiber membrane 1 having a large number of micropores 2 and the inner surface of the micropores 2 carry a catalyst 3 such as a photocatalyst having a catalytic function, a fluid Microorganisms and small organic foreign matter 5 and dirt, mold,
Foreign matter and the like are actively captured by the hollow fiber membrane 1, and microorganisms and organic foreign matter 5 contacting the surface of the catalyst 3 by the capture are efficiently decomposed by the catalytic function. Service life can be made longer than before.
【図１】本発明の実施例である中空糸膜の部分斜視図。FIG. 1 is a partial perspective view of a hollow fiber membrane according to an embodiment of the present invention.
【図２】図１の中空糸膜の部分断面図。FIG. 2 is a partial cross-sectional view of the hollow fiber membrane of FIG.
【図３】図１の中空糸膜の片側断面図。FIG. 3 is a half sectional view of the hollow fiber membrane of FIG.
【図４】超微粒子状の光触媒を担持した中空糸膜。FIG. 4 shows a hollow fiber membrane supporting a photocatalyst in the form of ultrafine particles.
【図５】カートリッジフィルターの斜視図。FIG. 5 is a perspective view of a cartridge filter.
【図６】カートリッジフィルターを取り付けた浄水器の
斜視図。FIG. 6 is a perspective view of a water purifier to which a cartridge filter is attached.
１…中空糸膜、２…微細孔、３…触媒、４…水、５…微
生物等、６…光、７…中空糸膜フィルター、８…カート
リッジ、９…処理前水流入口、１０…処理後水流出口、
１１…蛇口、１２…浄水器、１３…カセット。DESCRIPTION OF SYMBOLS 1 ... Hollow fiber membrane, 2 ... Micropore, 3 ... Catalyst, 4 ... Water, 5 ... Microorganism, etc. 6 ... Light, 7 ... Hollow fiber membrane filter, 8 ... Cartridge, 9 ... Water inlet before treatment, 10 ... After treatment Water outlet,
11: faucet, 12: water purifier, 13: cassette.
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０２Ｆ 1/72 １０１ Ｃ０２Ｆ 1/72 １０１ (72)発明者 織田 誠 茨城県土浦市神立町502番地 株式会社日 立製作所機械研究所内 Ｆターム(参考） 4D006 GA02 HA01 HA91 HA95 JA15Z JA18Z JA25A KB04 KB30 MA01 MC22 MC23 MC62 PB24 PC51 4D037 AA02 AB03 AB04 BA18 CA03 4D050 AA01 AA04 AB04 AB06 BB20 BC06 BC09 BD02 CA09 4G069 AA03 BA04A BA04B BA48A BB04A BB04B BB09B BC31B BC32B BC35B BC36B BC66B CA10 CA11 CA17 FB23 FB24Continuation of the front page (51) Int.Cl. 7 Identification code FI Theme coat II (Reference) C02F 1/72 101 C02F 1/72 101 (72) Inventor Makoto Oda 502, Kandachicho, Tsuchiura-shi, Ibaraki Pref. F-term in mechanical laboratory (reference) 4D006 GA02 HA01 HA91 HA95 JA15Z JA18Z JA25A KB04 KB30 MA01 MC22 MC23 MC62 PB24 PC51 4D037 AA02 AB03 AB04 BA18 CA03 4D050 AA01 AA04 AB04 AB06 BB20 BC06 BC09 BD02 CA09 4G069 AA03B04B04B04B04B04A BC35B BC36B BC66B CA10 CA11 CA17 FB23 FB24
Claims (5)
面、または該微細孔内面の少なくともどちらか一方に該
中空糸膜で捕獲した流体中の微生物や有機系異物を分解
する触媒を担持したことを特徴とする触媒担持中空糸
膜。1. A catalyst for decomposing microorganisms and organic foreign substances in a fluid captured by a hollow fiber membrane on at least one of the surface of a hollow fiber membrane having a large number of micropores on its surface or the inner surface of the micropores. A catalyst-carrying hollow fiber membrane which is carried.
を発揮する光触媒であり、該捕獲した微生物や有機系異
物を該光触媒機能により分解することを特徴とする請求
項１に記載の触媒担持中空糸膜。2. The catalyst according to claim 1, wherein one of the catalysts is a photocatalyst which exhibits a catalytic function by light irradiation, and decomposes the captured microorganisms and organic foreign substances by the photocatalytic function. Supported hollow fiber membrane.
ねて構成した中空糸膜フィルターにより該水を浄化する
と共に、該中空糸膜により捕獲した微生物や有機系異物
を該触媒により分解処理することを特徴とする請求項１
又は請求項２に記載の触媒担持中空糸膜。3. The method according to claim 1, wherein the fluid is water, and the water is purified by a hollow fiber membrane filter formed by bundling the hollow fiber membranes, and the microorganisms and organic foreign substances captured by the hollow fiber membranes are removed by the catalyst. 2. A decomposition process according to claim 1.
Or the catalyst-carrying hollow fiber membrane according to claim 2.
たカートリッジフィルターであり、該容器は光触媒に触
媒機能を発揮させる光を容易に透過させる材質で構成さ
れていることを特徴とする請求項１から３のいずれか１
項に記載の触媒担持中空糸膜。4. The hollow fiber membrane filter is a cartridge filter housed in a container, and the container is made of a material that easily transmits light that causes the photocatalyst to exhibit a catalytic function. Any one of items 1 to 3
Item 7. The catalyst-supporting hollow fiber membrane according to item 1.
ンに照射する光が紫外線を含む光であることを特徴とす
る請求項１から４のいずれか１項に記載の触媒担持中空
糸膜。5. The catalyst-carrying hollow fiber membrane according to claim 1, wherein the photocatalyst is titanium oxide, and the light applied to the titanium oxide is light containing ultraviolet rays. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18856498A JP2000015065A (en) | 1998-07-03 | 1998-07-03 | Hollow fiber membrane carrying catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18856498A JP2000015065A (en) | 1998-07-03 | 1998-07-03 | Hollow fiber membrane carrying catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000015065A true JP2000015065A (en) | 2000-01-18 |
Family
ID=16225905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18856498A Pending JP2000015065A (en) | 1998-07-03 | 1998-07-03 | Hollow fiber membrane carrying catalyst |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000015065A (en) |
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|---|---|---|---|---|
| JP2002254074A (en) * | 2001-02-28 | 2002-09-10 | Toray Ind Inc | Water purifier |
| WO2005084792A1 (en) * | 2004-02-18 | 2005-09-15 | Hitachi Chemical Co., Ltd. | Supporting unit for micro fluid system |
| JP2006224017A (en) * | 2005-02-18 | 2006-08-31 | Suetomi Engineering:Kk | Photocatalytic tube for water treatment |
| WO2011092987A1 (en) * | 2010-01-26 | 2011-08-04 | パナソニック電工株式会社 | Water purification apparatus |
| US8480971B2 (en) | 2004-11-30 | 2013-07-09 | Hitachi Chemical Co., Ltd. | Analytical pretreatment device |
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| US8865090B2 (en) | 2002-02-25 | 2014-10-21 | Hitachi Chemical Co., Ltd. | Micro fluid system support and manufacturing method thereof |
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-
1998
- 1998-07-03 JP JP18856498A patent/JP2000015065A/en active Pending
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|---|---|---|---|---|
| JP4686872B2 (en) * | 2001-02-28 | 2011-05-25 | 東レ株式会社 | Water purifier |
| JP2002254074A (en) * | 2001-02-28 | 2002-09-10 | Toray Ind Inc | Water purifier |
| US8865090B2 (en) | 2002-02-25 | 2014-10-21 | Hitachi Chemical Co., Ltd. | Micro fluid system support and manufacturing method thereof |
| US8889084B2 (en) | 2002-02-25 | 2014-11-18 | Hitachi Chemical Company, Ltd. | Micro fluid system support and manufacturing method thereof |
| WO2005084792A1 (en) * | 2004-02-18 | 2005-09-15 | Hitachi Chemical Co., Ltd. | Supporting unit for micro fluid system |
| KR100927288B1 (en) | 2004-02-18 | 2009-11-18 | 히다치 가세고교 가부시끼가이샤 | Support Unit for Micro Fluid System |
| US8480971B2 (en) | 2004-11-30 | 2013-07-09 | Hitachi Chemical Co., Ltd. | Analytical pretreatment device |
| US8480970B2 (en) | 2004-11-30 | 2013-07-09 | Hitachi Chemical Co., Ltd. | Analytical pretreatment device |
| JP2006224017A (en) * | 2005-02-18 | 2006-08-31 | Suetomi Engineering:Kk | Photocatalytic tube for water treatment |
| US8945157B2 (en) | 2009-09-25 | 2015-02-03 | Boston Scientific Scimed, Inc. | Devices for approximating tissue and related methods of use |
| US9610081B2 (en) | 2009-09-25 | 2017-04-04 | Boston Scientific Scimed, Inc. | Devices for approximating tissue and related methods of use |
| WO2011092987A1 (en) * | 2010-01-26 | 2011-08-04 | パナソニック電工株式会社 | Water purification apparatus |
| WO2014093349A3 (en) * | 2012-12-10 | 2014-08-07 | Nitto Denko Corporation | Disinfecting water device |
| US9738543B2 (en) | 2012-12-10 | 2017-08-22 | Nitto Denko Corporation | Disinfecting water device |
| CN103861467A (en) * | 2013-12-28 | 2014-06-18 | 太平洋水处理工程有限公司 | Low-temperature hydrothermal method for preparing strong hydrophilic anti-pollution composite membrane and application of membrane |
| CN113750826A (en) * | 2020-06-03 | 2021-12-07 | 天津工业大学 | Preparation method of photocatalytic composite porous membrane |
| CN113750826B (en) * | 2020-06-03 | 2022-11-25 | 天津工业大学 | Preparation method of photocatalytic composite porous membrane |
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