KR20100053989A - Water purifing filter element using iron oxide nanoparticles and method thereof - Google Patents

Water purifing filter element using iron oxide nanoparticles and method thereof Download PDF

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Publication number
KR20100053989A
KR20100053989A KR1020080112899A KR20080112899A KR20100053989A KR 20100053989 A KR20100053989 A KR 20100053989A KR 1020080112899 A KR1020080112899 A KR 1020080112899A KR 20080112899 A KR20080112899 A KR 20080112899A KR 20100053989 A KR20100053989 A KR 20100053989A
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KR
South Korea
Prior art keywords
iron oxide
oxide nanoparticles
activated carbon
water
filter
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KR1020080112899A
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Korean (ko)
Inventor
김준
Original Assignee
웅진코웨이주식회사
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Priority to KR1020080112899A priority Critical patent/KR20100053989A/en
Publication of KR20100053989A publication Critical patent/KR20100053989A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2055—Carbonaceous material
    • B01D39/2058—Carbonaceous material the material being particulate
    • B01D39/2062—Bonded, e.g. activated carbon blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2068—Other inorganic materials, e.g. ceramics
    • B01D39/2072—Other inorganic materials, e.g. ceramics the material being particulate or granular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/30—Filter housing constructions
    • B01D2201/301—Details of removable closures, lids, caps, filter heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0618—Non-woven

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

PURPOSE: A water purifying filter element using iron oxide nanopatricles and a manufacturing method thereof are provided to secure stability of water without leakage of iron oxide nanoparticles, and to purify the water passing through a filter. CONSTITUTION: A water purifying filter element includes the following; a spherical activated charcoal block(420); a cap(440) installed on one side of the activated charcoal block; and a filter cap(442) of which outlet is formed on the bottom and is installed on the other side of the activated charcoal block. The activated charcoal block includes alumina particles(10) in which activated charcoal, polyethylene and iron oxide nanoparticles are fixed. Non-woven fabrics(422,424) are installed on the outer surface and the inner surface of the activated charcoal block.

Description

Water filter element applying iron oxide nanoparticles and its manufacturing method {WATER PURIFING FILTER ELEMENT USING IRON OXIDE NANOPARTICLES AND METHOD THEREOF}

The present invention relates to a water filter element and a method of manufacturing the same.

Due to the problem of water pollution caused by industrialization, the use of water purifiers is increasing in homes and public facilities.

In the case of purifying water using a water purifier, a filter is essentially used, and mainly a MF (Micro Filtration) filter, an Ultra Filtration (UF) filter, an activated carbon filter, and the like are frequently used.

Recently, a technique of applying nanoparticles having a large surface area and maximizing efficiency to a filter has been attracting attention. In particular, iron oxide nanoparticles exhibit high activity in chemical and biological processes due to their small size and high surface area, and are excellent in removing heavy metals such as arsenic and lead, and can be applied to oxidation of organic materials. Wastewater treatment, advanced oxidation treatment). In addition, it is possible to manufacture a large amount and low production cost also enables a wide range of applications of iron oxide nanoparticles.

In order to apply the iron oxide nanoparticles to the water filter, the iron oxide nanoparticles should not be discharged into the effluent. This is because when iron oxide nanoparticles are leaked, the stability of drinking water is not secured and the performance of the water filter is impaired. In this regard, the present inventors have developed a technique for fixing iron oxide nanoparticles to alumina. Patent No. 0784167 relates to a technique of fixing the iron oxide nanoparticles developed by the present invention to alumina, a method of fixing a nano-sized iron oxide on the surface of the alumina support with an organic material having a carbon number of C5-C15.

Accordingly, the present invention is to provide a water filter using the iron oxide nanoparticles secured stability of drinking water by using the above technique for fixing the iron oxide nanoparticles to the alumina support.

In addition, an object of the present invention is to provide a water filter having a flow path structure in which water to be purified is sufficiently in contact with a wide surface of the iron oxide nanoparticles, thereby producing a high water purification effect.

In addition, to provide a water purification filter that can have a water purification effect by the iron oxide nanoparticles without affecting the performance of the existing filter, such as non-woven filter, activated carbon filter.

According to a first aspect of the present invention for achieving the above object, a hollow shaped activated carbon block, the bottom of the filter cap is installed on one side of the activated carbon block, and the outlet on the bottom installed on the other side of the activated carbon block It is provided with a filter cap is formed, the activated carbon block provides activated water filter element, characterized in that made of activated carbon, polyethylene, and alumina particles to which the iron oxide nanoparticles are fixed.

In this case, the activated carbon is 60 to 84% (w / v), the polyethylene is 15 to 30% (w / v), and the alumina particles to which the iron oxide nanoparticles are fixed are 1 to 10% (w / v). .

Nonwoven fabrics are provided on the inner and outer surfaces of the activated carbon block.

According to the method for producing the activated carbon block according to the first aspect of the present invention, 60 to 84% (w / v) activated carbon, 15 to 30% (w / v) polyethylene, and 1 to 10% (w / v) Mixing the alumina particles to which the iron oxide nanoparticles of which are immobilized are injected into the mold and molded at a pressure of 50 psi or more and a temperature of 90 ° C. or more to form a hollow molding, and after cooling the molding, separating and processing from the mold And coating the nonwoven on the inner and outer surfaces of the workpiece.

According to a second aspect of the present invention, there is provided a hollow foamed metal body, a bottom-sided filter cap installed on one side of the foamed metal body, and a filter cap having a water outlet formed on the bottom side installed on the other side of the foamed metal body. In addition, it provides a water filter element, characterized in that the iron oxide nanoparticles are fixed to the surface and the inner surface of the foam metal body.

In this case, the foam metal body is made of any one of aluminum, titanium, or iron.

According to a method of manufacturing a foamed metal body according to a second aspect of the present invention, the method may include forming a hollow foamed metal body, and baking the foamed metal body in an organic solution in which iron oxide nanoparticles are dispersed. do.

According to the first aspect of the present invention, since the filter effect of the iron oxide nanoparticles is added while maintaining the filter performance of the conventional activated carbon filter as it is, it has a more certain water purification effect. In addition, since the iron oxide nanoparticles are molded and fixed in the activated carbon filter, there is no fear that the iron oxide nanoparticles are leaked to the outside, thereby ensuring stability of the user's drinking water and maintaining filter performance.

According to the second aspect of the present invention, since the iron oxide nanoparticles are directly fixed to the foamed metal body, there is no fear of the iron oxide nanoparticles leaking to the outside, thereby ensuring stability for drinking water of the user and maintaining filter performance. In addition, since a complicated flow path is formed inside the foamed metal body, the water purification ability of the water is improved.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 illustrates alumina particles 10 to which iron oxide nanoparticles to be applied to a filter of an embodiment of the present invention are immobilized. The alumina particle 1 uses the thing of 1-100,000 micrometers in diameter, and the iron oxide nanoparticle 2 uses the thing of 1-100 nm in diameter. As disclosed in Korean Patent No. 0784167, FeCl 3 .6H 2 O is reduced to prepare iron oxide nanoparticles in the presence of a C5-C15 carbon-containing surfactant (sodium oleate salt), and the iron oxide nanoparticles After saturating to the surface, the iron oxide nanoparticles can be fixed to the surface of the alumina particles by annealing the alumina particles at 400 to 1000 ° C. Referring to FIG. 1, it can be seen that the iron oxide nanoparticles 2 are fixed to the surface of the alumina particles 1.

Next, an embodiment in which the alumina particles 10 to which the iron oxide nanoparticles shown in FIG. 1 are fixed is applied to a water filter will be described.

2 shows the design structure and the flow path of the filter according to the first embodiment of the present invention. Referring to FIG. 2, the filter according to the present exemplary embodiment is a configuration in which a plurality of iron oxide nanoparticle fixed alumina particles 10 are stacked and filled in the filter housing 100 without fabricating a separate filter element. The filter housing 100 has a structure of a bi-directional inlet and outlet, in which the inlet 110 and the outlet 120 are formed in both directions. Non-woven fabrics 112 and 122 are disposed in the inlet port 110 and the outlet port 120, respectively. The nonwoven fabrics 112 and 122 should have fine pores smaller than the size of the alumina particles 10 so that the alumina particles 10 do not flow out. It is preferable that the nonwoven fabrics 112 and 122 have a hole of 0.1-1000 micrometers, for example. The nonwoven fabrics 112 and 122 may be made of a polyolefin-based material such as polypropylene (PP) or polyethylene (PE).

As indicated by the arrows in FIG. 2, according to the filter of the present embodiment, when water enters through the inlet 110, water penetrates into the filter housing 100 through the hole of the nonwoven fabric 112, and the filter housing 100. After being purified while passing between the iron oxide nanoparticle-fixed alumina particles 10 laminated therein, the purified water is discharged through the outlet 120.

According to the filter structure of this embodiment, water purification effects such as heavy metal removal by iron oxide nanoparticles can be expected. However, there may be a disadvantage that the flow path structure is not simple and the performance maintenance of the reactivity of the iron oxide nanoparticles is not high. In addition, since the structure of the bi-directional inlet and outlet, the space utilization is not high when mounted in the water purifier. In addition, water passing between the alumina particles causes the alumina particles to flow, and when the particles collide with each other, the iron oxide nanoparticles fixed on the surface may fall off. There is a problem that the water purification performance is also lowered.

3A shows the design structure and the flow path of the filter element according to the second embodiment of the present invention. The filter element 200 according to the present embodiment includes a hollow core 220 installed inside, a hollow core 222 installed outside, and an inner core 220 and an outer core 222. It comprises a plurality of iron oxide nanoparticles fixed alumina particles (10) disposed in the.

The inner core 220 and the outer core 222 may be made of a polyolefin nonwoven fabric such as polypropylene or polyethylene. The cores 220 and 222 may be formed by winding a nonwoven fabric formed in a thin sheet shape in a cylindrical shape, and then fusion bonding integrally by applying heat. When the density of the tissue is adjusted by uniformly crimping using a jig, a mold or the like in the process of integrally fusion by applying heat, it is possible to keep the structure of the core constant. In addition, the cores 220 and 222 may be used by forming fine particles or fibers of a polypropylene resin into a cylindrical shape by a melt blown method. In addition, the cores 220 and 222 may also have a cylindrical shape by injection molding so that a plurality of holes are formed. In any way, the nonwoven cores 220 and 222 should have fine pores smaller than the size of the alumina particles 10 so that the alumina particles 10 do not flow out. It is preferable that the nonwoven cores 220 and 222 have a hole of 0.1-1000 micrometers, for example. In addition, the nonwoven cores 220 and 222 should have rigidity enough to support the alumina particles 10.

One side of the cores 220 and 222 is provided with a filter cap 240 with the bottom blocked, and the other side is provided with a filter cap 242 having a water outlet at the bottom.

3B illustrates a state in which the filter element 200 according to the present embodiment is coupled to the filter housing 280 of the one-way inlet / outlet structure in which the inlet 284 and the outlet 286 are formed in one direction. The portion where the outlet of the filter cap 242 is coupled to the filter housing 280 is sealed with a rubber ring 282 so that purified water does not leak.

As shown by the arrows in FIGS. 3A and 3B, according to the filter of the present embodiment, water introduced into the inlet 284 flows in through the circumferential surface of the outer core 222 and the iron oxide nanoparticle fixed alumina particles 10 Water purification is performed through a stack of), and the purified water is discharged through the inner core 220 to the outlet 286.

According to the present embodiment, it is possible to expect a high water purification effect by configuring the flow path to be more complicated so that the water is in sufficient contact with the large surface of the iron oxide nanoparticles. In addition, since the filter housing of the one-way inlet and outlet formed in one direction of the inlet and outlet can be used, it is possible to increase the space utilization in the water purifier. However, the possibility of leakage of iron oxide nanoparticles due to the collision of alumina particles still remains.

4 shows a design structure and a flow path of a filter element according to a third embodiment of the present invention. The filter element 300 according to the present exemplary embodiment is a structure in which iron oxide nanoparticle-fixed alumina particles are stacked on an inner flow path of a conventional nonwoven filter. That is, the nonwoven fabric laminate 320 is formed in a hollow shape, and the iron oxide nanoparticle fixed alumina particles 10 are filled therein. MF filters, UF filters, and the like may be used for the nonwoven fabric laminate 320. One side of the nonwoven fabric laminate 320 is provided with a filter cap 340, the bottom of which is blocked, and the other side is provided with a filter cap 342 having a water outlet at the bottom. On the outlet side, a nonwoven fabric 360 having a hole smaller than the size of the alumina particles 10 is installed so that the alumina particles 10 do not flow out. It is preferable that the nonwoven fabric 360 has a hole of 0.1-1000 micrometers, for example. The nonwoven fabric 360 may be made of a polyolefin-based material such as polypropylene or polyethylene.

As indicated by the arrows in FIG. 4, according to the filter of the present embodiment, water flows through the circumferential surface of the nonwoven fabric laminate 320 to form purified water by the nonwoven fabric, and is laminated on the internal flow path of the nonwoven fabric laminate 320. After passing through the fixed iron oxide nanoparticles fixed alumina particles (10) and the water purification function is performed by the iron oxide nanoparticles, it is discharged through the outlet.

As such, the water has the effect of being purified twice by the filter action by the nonwoven fabric filter and the filter action by the iron oxide nanoparticles. Since the filter effect of the iron oxide nanoparticles is added while maintaining the filter performance of the conventional nonwoven filter as it is, a more certain water purification effect can be expected. In addition, since the filter housing of the one-way inlet and outlet formed in one direction of the inlet and outlet can be used, it is possible to increase the space utilization in the water purifier. However, there is still a problem of the possibility of leakage of iron oxide nanoparticles by collision of alumina particles.

5 shows a design structure and a flow path of a filter element according to a fourth embodiment of the present invention. The filter element 400 according to the present embodiment includes an activated carbon block 420 that adsorbs fine foreign matter in water, an outer nonwoven fabric 422 wound around an outer surface of the activated carbon block 420, and an inner surface of the activated carbon block 420. It consists of an inner nonwoven fabric 424 is installed. The outer nonwoven fabric 422 serves to filter out large foreign matter in the water, and the inner nonwoven fabric 424 serves to prevent the powder from the activated carbon from being lost.

Activated carbon block 420 is a compression-molded in the mold has a cylindrical shape hollow inside, and comprises activated carbon, polyethylene, and iron oxide nanoparticle fixed alumina particles (10).

Activated carbon is divided into powdered activated carbon using vegetable raw materials and granular activated carbon made of charcoal, palm husk, coal and the like. In the present invention, activated carbon obtained by activating and drying a palm husk with a large surface area and excellent adsorptive power is used. Adsorption holes are formed in the activated carbon, thereby increasing the surface area of the activated carbon to increase the contact area with the water, thereby improving foreign matter adsorption.

Polyethylene constrains the flow of activated carbon in the powdered state so that it does not scatter. Polyethylene can be easily mixed with activated carbon in the molten state.

The manufacturing process of the activated carbon block 420 consists of a mixing step, a forming step, a processing step, and a coating step. In the mixing step, 60 to 84% (w / v) of activated carbon, 15 to 30% (w / v) of polyethylene, and 1 to 10% (w / v) of iron oxide nanoparticle fixed alumina particles are mixed. In the forming step, the mixture is poured into a cylindrical mold and molded at a pressure of at least 50 psi and at a temperature of at least 90 ° C. In the processing step, the shaped activated carbon blocks are cooled and then separated from the mold and cut into appropriate sizes. In the coating step, an inner nonwoven fabric is coated on the inner surface of the activated carbon block, and an outer nonwoven fabric is coated on the outer surface of the activated carbon block.

One side of the completed activated carbon block 420 is provided with a filter cap 440 of which the bottom is blocked, and the other side is provided with a filter cap 442 having a water outlet formed on the bottom thereof.

As indicated by the arrows in FIG. 5, according to the filter of the present embodiment, water is introduced through the circumferential surface of the activated carbon block 420 to be purified by the activated carbon block 420, and discharged through the outlet port.

Since the activated carbon block contains activated carbon and iron oxide nanoparticles, the water passing through the activated carbon block simultaneously adsorbs foreign substances by activated carbon and water purification by the iron oxide nanoparticles. Since the filter effect by iron oxide nanoparticles is added while maintaining the filter performance of the conventional activated carbon filter as it is, a more reliable water purification effect can be expected. In addition, since the filter housing of the one-way inlet and outlet formed in the inlet and outlet in one direction can be used, it is possible to increase the space utilization in the water purifier. In addition, because the alumina particles are molded and fixed in the activated carbon filter, the alumina particles do not flow with water flow and do not collide with each other. Therefore, there is no fear that the iron oxide nanoparticles fixed on the alumina particles are leaked to the outside, so that the stability of drinking water of the user is secured and the filter performance by the iron oxide nanoparticles is maintained.

6 shows a design structure and a flow path of a filter element according to a fifth embodiment of the present invention. The filter element 500 according to the present embodiment has a structure in which the iron oxide nanoparticles 2 are fixed to the foamed metal body 520.

Foamed metal is a porous structure having pores in the metal, and is used in lightweight structures, sound absorbing materials, vibration damping materials, heat exchangers and the like because of its low density, incombustibility, sound absorption and excellent mechanical properties. Foamed metal is generally used a method in which hydrogen gas produced by decomposition of gaseous particles added to a molten metal is formed by forming pores. The foamed metal can be made of aluminum, titanium, iron or the like.

The method for manufacturing the filter element 500 according to the present embodiment includes the steps of forming a hollow cylindrical foam metal body 520, and the iron oxide nanoparticles 2 on the surface and the inner surface of the foam metal body 520. ) Is achieved. Molding the cylindrical foam metal body 520 is manufactured by a conventional foam metal molding method. Cylindrical foamed metal bodies can be molded from the beginning, and may be formed by molding a plate-shaped foamed metal and then winding in a circle. Fixing the iron oxide nanoparticles 2 to the foamed metal body 520 is the same as the method of fixing the iron oxide nanoparticles to the surface of the alumina particles. That is, iron oxide nanoparticles are produced by reducing FeCl 3 · 6H 2 O in the presence of a surfactant such as sodium oleate salt, impregnating the iron oxide nanoparticles with a foamed metal body, and firing the particles. Can be fixed When saturating the iron oxide nanoparticles in the foamed metal body, it is preferable to impregnate the foamed metal body in the organic solution in which the iron oxide nanoparticles are dispersed so that the iron oxide nanoparticles penetrate and fix the surface and the inner surface of the foamed metal body.

One end of the foamed metal body 520 thus completed is provided with a filter cap 540 with a closed bottom, and a filter cap 542 with a water outlet formed at the bottom thereof is installed at the other side.

As indicated by arrows in FIG. 6, according to the filter of the present embodiment, water flows in and flows through the pores from the circumferential surface of the foam metal body 520 to be purified and discharged through the outlet port.

Since the foamed metal body contains iron oxide nanoparticles on the surface and the inner surface, water passing through the foamed metal body undergoes water purification action by the iron oxide nanoparticles. Since a complicated flow path is formed inside the foam metal body, a large water purification effect of water passing through the flow path can be expected. In addition, since the iron oxide nanoparticles are directly fixed to the foamed metal body, there is no fear of the iron oxide nanoparticles leaking to the outside, thereby ensuring stability for drinking water of the user and maintaining filter performance by the iron oxide nanoparticles. In addition, since the filter housing of the one-way inlet and outlet formed in the inlet and outlet in one direction can be used, it is possible to increase the space utilization in the water purifier.

1 illustrates alumina particles to which iron oxide nanoparticles are fixed according to an embodiment of the present invention.

2 shows a water filter according to a first embodiment of the present invention.

3A shows a water filter element according to a second embodiment of the present invention.

3B shows a water filter according to a second embodiment of the present invention.

4 shows a water filter element according to a third embodiment of the invention.

5 shows a water filter element according to a fourth embodiment of the present invention.

6 shows a water filter element according to a fifth embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1 Alumina Particles 2 Iron Oxide Nanoparticles

10 Alumina particles with fixed iron oxide nanoparticles

100 filter housing 110 inlet

112 nonwoven fabric 120 outlet

122 nonwoven 200 filter element

220 inner core 222 outer core

240 filter cap 242 filter cap

300 filter element 320 nonwoven laminate

340 Filter Cap 342 Filter Cap

360 nonwoven 400 filter element

420 activated carbon block 422 nonwoven fabric

424 nonwoven 440 filter cap

442 filter cap 500 filter element

520 Foam Metal 540 Filter Cap

542 filter cap

Claims (7)

Hollow shaped activated carbon block 420, Bottom clogged filter cap 440 is installed on one side of the activated carbon block 420, and It is provided with a filter cap 442 formed with a water outlet in the bottom installed on the other side of the activated carbon block 420, The activated carbon block 420 is a water filter element, characterized in that the activated carbon, polyethylene, and alumina particles (10) to which the iron oxide nanoparticles are fixed. The method according to claim 1, The activated carbon is 60 to 84% (w / v), the polyethylene is 15 to 30% (w / v), and the alumina particles 10 to which the iron oxide nanoparticles are fixed are 1 to 10% (w / v). A water filter element, characterized in that. The method according to claim 1 or 2, Water filter element, characterized in that the nonwoven fabric (422, 424) is provided on the inner surface and the outer surface of the activated carbon block (420). In the manufacturing method of the activated carbon block installed in a water filter, Mixing 60-84% (w / v) activated carbon, 15-30% (w / v) polyethylene, and 1-10% (w / v) iron oxide nanoparticles to which alumina particles are immobilized, Injecting the mixture into a mold and forming a hollow shape at a pressure of 50 psi or higher and a temperature of 90 ° C. or higher, Cooling the molding and then processing it separately from the mold, and A method of manufacturing an activated carbon block comprising coating a nonwoven fabric on an inner surface and an outer surface of a workpiece. Hollow shaped foam metal body 520, Bottom clogged filter cap 540 is installed on one side of the foam metal body 520, and It is provided with a filter cap 542 formed with a water outlet in the bottom installed on the other side of the foam metal body 520, The water filter element, characterized in that the iron oxide nanoparticles (2) is fixed to the surface and the inner surface of the foam metal body (520). The method according to claim 5, The foam metal body 520 is a water filter element, characterized in that made of any one of aluminum, titanium, or iron. In the manufacturing method of the foamed metal body installed in a water filter, Forming a hollow metal foam; and And firing the foamed metal body in an organic solution in which iron oxide nanoparticles are dispersed.
KR1020080112899A 2008-11-13 2008-11-13 Water purifing filter element using iron oxide nanoparticles and method thereof KR20100053989A (en)

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KR101661516B1 (en) * 2016-07-11 2016-09-30 필터로직 주식회사 A complex filter and a method manufacturing the same
WO2016195284A1 (en) * 2015-06-01 2016-12-08 주식회사 아모그린텍 Adsorptive liquid filter
WO2016195288A1 (en) * 2015-06-01 2016-12-08 주식회사 아모그린텍 Adsorptive membrane
KR20210044512A (en) * 2019-10-15 2021-04-23 주식회사 큐디앤 Rainwater treatment system
KR20210044516A (en) * 2019-10-15 2021-04-23 주식회사 큐디앤 Vibration filter module
KR102369201B1 (en) * 2021-06-14 2022-03-03 화성밸브 주식회사 ball valve mounting purification members

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016195284A1 (en) * 2015-06-01 2016-12-08 주식회사 아모그린텍 Adsorptive liquid filter
WO2016195288A1 (en) * 2015-06-01 2016-12-08 주식회사 아모그린텍 Adsorptive membrane
US10682613B2 (en) 2015-06-01 2020-06-16 Amogreentech Co., Ltd. Adsorptive liquid filter
KR101661516B1 (en) * 2016-07-11 2016-09-30 필터로직 주식회사 A complex filter and a method manufacturing the same
WO2018012684A1 (en) * 2016-07-11 2018-01-18 필터로직 주식회사 Composite filter and manufacturing method therefor
CN107596793A (en) * 2016-07-11 2018-01-19 过滤逻辑株式会社 Complex filter and preparation method thereof
KR20210044512A (en) * 2019-10-15 2021-04-23 주식회사 큐디앤 Rainwater treatment system
KR20210044516A (en) * 2019-10-15 2021-04-23 주식회사 큐디앤 Vibration filter module
KR102369201B1 (en) * 2021-06-14 2022-03-03 화성밸브 주식회사 ball valve mounting purification members

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