KR930005623B1 - Hollow fiber membrane cartridge for water purifier - Google Patents
Hollow fiber membrane cartridge for water purifier Download PDFInfo
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- KR930005623B1 KR930005623B1 KR1019900020026A KR900020026A KR930005623B1 KR 930005623 B1 KR930005623 B1 KR 930005623B1 KR 1019900020026 A KR1019900020026 A KR 1019900020026A KR 900020026 A KR900020026 A KR 900020026A KR 930005623 B1 KR930005623 B1 KR 930005623B1
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- South Korea
- Prior art keywords
- hollow fiber
- activated carbon
- fiber membrane
- cartridge
- water
- Prior art date
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- 239000012528 membrane Substances 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 9
- 229920000297 Rayon Polymers 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 229920002239 polyacrylonitrile Polymers 0.000 claims abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 44
- 239000012466 permeate Substances 0.000 claims description 3
- 241000894006 Bacteria Species 0.000 abstract description 11
- 239000011148 porous material Substances 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 5
- 239000004917 carbon fiber Substances 0.000 abstract description 2
- 150000001805 chlorine compounds Chemical class 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 235000020188 drinking water Nutrition 0.000 description 5
- 239000003651 drinking water Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000008213 purified water Substances 0.000 description 3
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000019645 odor Nutrition 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- -1 that is Substances 0.000 description 2
- 229920001747 Cellulose diacetate Polymers 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- 206010008631 Cholera Diseases 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 208000037386 Typhoid Diseases 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000001994 activation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000012461 cellulose resin Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 208000001848 dysentery Diseases 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000002458 infectious effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 201000008297 typhoid fever Diseases 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 238000002166 wet spinning Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D27/00—Cartridge filters of the throw-away type
- B01D27/005—Making filter elements not provided for elsewhere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/021—Carbon
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/44—Cartridge types
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Description
제1도는 활성탄과 중공사막이 분리 구성된 종래기술에 의한 카트리지 개략도.1 is a schematic view of a cartridge according to the prior art in which activated carbon and a hollow fiber membrane are separated.
제2도는 본 발명이 한 실시예에 따라 활성탄소 섬유와 중공사막이 혼합구성된 카트리지 개략도.2 is a schematic view of a cartridge in which an activated carbon fiber and a hollow fiber membrane are mixed according to an embodiment of the present invention.
제3도는 제2도 카트리지의 접착단부를 나타낸 단면도.3 is a cross-sectional view showing the adhesive end of the cartridge of FIG.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
11 : 공급수 입구 2 : 투과수 출구11: feed water inlet 2: permeate outlet
4 : 활성탄소 섬유 5 : 접착제4: activated carbon fiber 5: adhesive
6 : 중공사막 7 : 케이스6: hollow fiber membrane 7: case
8 : 헤드 9 : 배출수출구8: Head 9: discharge outlet
본 발명은 음용수를 얻기위한 가정용수 처리기구에 사용되는 중공사막 카트리지에 관한 것이다.The present invention relates to a hollow fiber membrane cartridge for use in domestic water treatment equipment for obtaining drinking water.
산업이 발달함에 따라 각종 오염물질의 양적인 증가가 빠른속도로 확산되면서 식수로서 사용하는 음용수에 대한 수질문제가 심각하게 제기되고 있다.As the industry develops, the quantitative increase of various pollutants is rapidly spreading, and water quality problems for drinking water used as drinking water are seriously raised.
특히, 가정용 수도물중에 함유 가능성이 많은 각종 세균등과 같은 유기물에 의한 오염이 심각한데, 그 원인은 정수지에서 각 가정으로 공급하는 급수관이 노후됨에 따라 유기물이 침입하거나 또는 수저장 탱크내의 각종 미생물등의 오염으로 인하여 그 속에 포함되어 있는 콜레라, 장티푸스, 이질균등과 같은 각종 전염성균 및 박테리아등에 의해 인체가 해를 입게 되고 이러한 오염물질에 의한 냄새 및 맛등에 의해 음용시 불쾌감을 느끼게 된다.In particular, contamination by organic matters such as various bacteria, which are likely to be contained in domestic tap water, is serious. The cause of this is due to the aging of water supply pipes supplied from homes to each household, or intrusion of organic matters or contamination of various microorganisms in water storage tanks. Due to this, the human body is harmed by various infectious bacteria and bacteria such as cholera, typhoid fever, dysentery, etc., and it is unpleasant when drinking by smell and taste caused by these pollutants.
이러한 음용수내의 각종 오염물질을 제거하기 위하여 활성탄 및 이온교환수지 카트리지 또는 활성탄과 고분자막 필터등이 복합된 카트리지 등을 이용한 수처리기구등이 사용되고 있다.In order to remove various contaminants in the drinking water, a water treatment apparatus using an activated carbon and an ion exchange resin cartridge or a cartridge in which an activated carbon and a polymer membrane filter are combined is used.
활성탄 카트리지는 활성탄의 분자흡착작용에 의하여 불순물, 냄새, 색소 및 세균등을 제거하며, 특히 소독용 잔류염소의 제거기능이 우수하지만, 장기간 사용시 흡착기능이 저하되어 활성탄내에 흡착된 각종오염물질이 탈착되므로 정수처리하지 않은 물보다 유기물이 더많이 함유된 물을 음용하게되며, 또한 잠시 사용을 중단하게 되면 정수기 카트리지 내에서 각종 세균이 증식하게 되어 사용상의 많은 문제점이 발생하게 된다.Activated carbon cartridge removes impurities, odors, pigments, and bacteria by molecular adsorption of activated carbon. Especially, it has excellent function of removing residual chlorine for disinfection. Therefore, drinking water containing more organic matter than water that is not purified water, and if you stop using for a while, various bacteria grow in the water purifier cartridge, causing a lot of problems in use.
그리고, 이온교환 수지방식의 카트리지는 물속의 금속이온을 치환 흡착하여 제거하는 중금속 제거기능은 있으나, 대장균등의 세균류와 잔류염소 제거기능이 없는것이 문제점으로 지적되고 있다.In addition, the ion-exchange resin cartridge has a heavy metal removal function to remove and remove metal ions in water by substitution adsorption, but it has been pointed out as a problem that bacteria and other residual chlorine removal functions such as Escherichia coli are not removed.
이러한 문제점을 해결하기 위하여 제1도에 도시되는 바와같이 각종 유기물질, 즉 먼지, 녹찌꺼기, 부유물 및 각종 세균류를 제거할 수 있는 중공사막(6)과 잔류염소 제거 기능이 있는 활성탄(4′)이 복합된 카트리지(일본특공개소 64-7907 및 미국특허 4636307참조)를 이용한 수처리기구가 사용되고 있으나, 활성탄(4′)의 분자 흡착작용은 그 포어크기의 균일도에 크게 좌우되는바, 기존 활성탄의 포어 크기가 그렇게 균일하지 못하기 때문에 분자 흡착작용에 의한 제거기능이 떨어지는 문제점이 있으며, 또한 활성탄이 입자의 형태로 존재하기 때문에 활성탄과 중공사막이 분리되어 구성되어야 함으로 카트리지화 공정이 다소 복잡하게 되고 소형화가 곤란할 뿐만아니라, 밑(바닥)부분들만 계속적으로 여과가 수행되므로 세균제거능력이 저하하게 되고 부분적으로 오염이 발생하게 되는 등의 문제점이 있다.To solve this problem, as shown in FIG. 1, a hollow fiber membrane 6 capable of removing various organic substances, that is, dust, debris, suspended matter and various bacteria, and activated carbon 4 'having a residual chlorine removal function A water treatment apparatus using this complex cartridge (see Japanese Patent Application Laid-Open No. 64-7907 and U.S. Patent 4636307) is used. However, the molecular adsorption of activated carbon (4 ') is highly dependent on the pore size uniformity. Since the size is not so uniform, there is a problem in that the removal function by molecular adsorption is inferior. Also, since activated carbon exists in the form of particles, the activated carbon and the hollow fiber membrane must be separated so that the cartridgeization process becomes somewhat complicated and miniaturized. Not only is it difficult, but only the bottom part (bottom) is continuously filtered, so the ability to remove bacteria decreases and As there is a problem such that the pollution occurs.
따라서, 본 발명은 균일한 포어크기로 인해 흡착작용이 보다 개선된 활성탄소 섬유를 이용하고, 활성탄소 섬유와 중공사막을 혼합구성한 수처리기구용 카트리지를 제공하여 상기한 바와같은 선행기술의 제반 문제점을 해소하는데 그 목적이 있다.Accordingly, the present invention provides a cartridge for a water treatment apparatus using an activated carbon fiber with improved adsorption action due to a uniform pore size, and a mixture of activated carbon fibers and a hollow fiber membrane to solve all the problems of the prior art as described above. The purpose is to solve it.
본 발명에 의하면, 잔류염소 및 냄새와 유기물질의 일부를 제거하기 위하여 활성탄 대신에 활성탄소섬유를 사용하였는바, 활성탄소섬유가 활성탄보다 포어의 크기가 균일하기 때문에 분자 흡착작용이 보다 효과적이며, 섬유상의 형태로 존재하기 때문에 중공사막과 혼합하여 카트리지를 제조할 수 있게 되어 카트리지 제조공정이 단순화되고 카트리지가 소형화될 수 있다.According to the present invention, activated carbon fibers were used instead of activated carbon to remove residual chlorine, odors, and organic substances. Since activated carbon fibers have a more uniform pore size than activated carbon, molecular adsorption is more effective. Because of their presence in fibrous form, it is possible to produce a cartridge by mixing with the hollow fiber membrane, which simplifies the cartridge manufacturing process and miniaturizes the cartridge.
제2도에 도시되는 바와같이, 본 발명의 한 실시예에 의한 카트리지는 공급수 입구(1)와 배출수 출구(9)가 형성된 원통형 케이스(7)내에 활성탄소섬유(4)와 중공사막(6)이 혼재되어 접착제(5)로 접착된후 투과수 출구(2)가 형성된 헤드(8)에 결합되므로 일단 잔류염소와 냄새원인물질 및 유기 물질의 일부가 균일한 포어를 갖는 활성탄소섬유(4)에 일차적으로 흡착되어 걸러지며 미제거된 부유물질, 유기물질 및 세균류가 중공사막(6)에서 최종적으로 완전히 제거된다.As shown in FIG. 2, the cartridge according to one embodiment of the present invention has an activated carbon fiber 4 and a hollow fiber membrane 6 in a cylindrical case 7 in which a feed water inlet 1 and a discharge water outlet 9 are formed. ) Is mixed and bonded with the adhesive (5) and then bonded to the head (8) formed with the permeate outlet (2), so that once the residual chlorine, odor-causing substances and some of the organic materials have a uniform pore (4) ) Is first adsorbed and filtered, and unremoved suspended matter, organic matter and bacteria are finally completely removed from the hollow fiber membrane (6).
본 발명에 따라 사용되는 활성탄소섬유는 폴리아크릴로 니트릴, 비스코스, 피치등을 원료로 하여 탄소화공정과 활성화공정을 거쳐 제조한 포어크기 10-20Å 범위의 섬유상 활성탄소로서, 중공사막에 대한 활성탄소섬유의 혼재율은 30-50% 정도가 바람직하다.Activated carbon fiber used in accordance with the present invention is a fibrous activated carbon in the pore size range of 10-20 제조 prepared through a carbonization process and an activation process using polyacrylonitrile, viscose, pitch, etc., active to the hollow fiber membrane The mixing rate of the carbon fibers is preferably about 30-50%.
만일, 본 발명에 의한 활성탄소 섬유의 혼재율이 30%보다 적을 경우에는 세균류의 제거능력이 저하되고, 50%보다 많을 경우에는 장기간 사용시 흡착기능의 저하로 오염물질이 탈착되어 수질오염을 가증시킨다.If the mixing ratio of activated carbon fiber according to the present invention is less than 30%, the removal ability of bacteria is lowered, and if it is more than 50%, contaminants are desorbed due to deterioration of adsorption function during long-term use, thereby increasing water pollution. .
중공사막의 재료로는 일반적으로 폴리프로필렌등의 폴리올리핀계 수지 ; 셀룰로우즈 아세테이트, 셀룰로우즈 디아세테이트, 셀룰로우즈 트리아세테이트등의 셀룰로우즈계 수지 ; 폴리설폰 및 폴리에테르 설폰계 수지가 사용된다.As a material of a hollow fiber membrane, Generally polyolefin resin, such as polypropylene; Cellulose resins such as cellulose acetate, cellulose diacetate and cellulose triacetate; Polysulfone and polyether sulfone-based resins are used.
이하, 본 발명을 첨부도면과 비한정적인 실시예를 이용하여 보다 구체적으로 설명하기로 한다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings and non-limiting examples.
[실시예 1]Example 1
습식방사로 제조된 내경 200㎛, 외경 400㎛, 길이 24㎝인 폴리술폰 중공사막(6)에, 표면적 12m/g, 포어크기 15Å, 총포어부피 1.00cc/g, 밀도 1.43g/cc인 비스코스를 원료로한 활성탄소 섬유(4)를 중공사막에 대해 50%의 비율로 혼합하여 내경 3.5㎝, 길이 23㎝이고 외부면에 수직방향으로 공급수입구(1) 및 배출수 출구(9)를 원통형 케이스(7)에 충진후, 중공사막(6)과 활성탄섬유(4)가 혼합된 다발의 양끝을 접착제(5)로 접착고정 시킨다음 여분의 것을 절단하고 투과수출구(2)가 있는 한 쌍의 헤드(8)를 조립하여 수처리기구용 카트리지를 제작하였다.Viscose with polysulfone hollow fiber membrane 6 having an inner diameter of 200 μm, an outer diameter of 400 μm, and a length of 24 cm prepared by wet spinning, having a surface area of 12 m / g, pore size of 15 mm, total pore volume of 1.00 cc / g, and density of 1.43 g / cc. Activated carbon fiber (4) made from the raw material was mixed at a rate of 50% with respect to the hollow fiber membrane, and the inner diameter of 3.5 cm, the length of 23 cm, and the supply inlet port 1 and the discharge water outlet 9 in the direction perpendicular to the outer surface were cylindrical. After filling the case (7), the ends of the bundle of the hollow fiber membrane (6) and the activated carbon fiber (4) is bonded and fixed with an adhesive (5) and then cut the excess and a pair having a permeation outlet (2) Head 8 was assembled to produce a cartridge for a water treatment device.
이와같이 제작된 카트리지를 이용하여 정수한 수질을 분석하여 다음 표 1에 나타내었다.The purified water quality was analyzed using the cartridge thus prepared, and is shown in Table 1 below.
[실시예 2-3 및 비교예 1-5]Example 2-3 and Comparative Example 1-5
중공사막에 대한 활성탄소 섬유의 혼합비율, 활성탄소섬유의 재질 및 활성탄소 섬유의 포어크기를 하기한 바와같이 선택한 것을 제외하고는 실시예 1과 동일한 밥방법으로 카트리지를 제작하였으며, 각각의 카트리지를 이용하여 정수한 수질을 분석하여 다음표 1에 나타내었다.Cartridges were manufactured by the same method as in Example 1 except that the mixing ratio of the activated carbon fibers to the hollow fiber membranes, the material of the activated carbon fibers, and the pore size of the activated carbon fibers were selected as described below. The purified water quality was analyzed and shown in Table 1 below.
[표 1]TABLE 1
중공사막 대활성탄소섬유의 활성탄소Activated Carbon of Hollow Fiber Membrane Large Activated Carbon Fiber
Claims (2)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900020026A KR930005623B1 (en) | 1990-12-06 | 1990-12-06 | Hollow fiber membrane cartridge for water purifier |
| KR2019930008015U KR930004462Y1 (en) | 1990-12-06 | 1993-05-13 | Hollow filber membrane cartridge for treatment of faucet water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900020026A KR930005623B1 (en) | 1990-12-06 | 1990-12-06 | Hollow fiber membrane cartridge for water purifier |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019930008015U Division KR930004462Y1 (en) | 1990-12-06 | 1993-05-13 | Hollow filber membrane cartridge for treatment of faucet water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR920011560A KR920011560A (en) | 1992-07-24 |
| KR930005623B1 true KR930005623B1 (en) | 1993-06-23 |
Family
ID=19307134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019900020026A KR930005623B1 (en) | 1990-12-06 | 1990-12-06 | Hollow fiber membrane cartridge for water purifier |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR930005623B1 (en) |
-
1990
- 1990-12-06 KR KR1019900020026A patent/KR930005623B1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| KR920011560A (en) | 1992-07-24 |
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