KR102641691B1 - Water treatment filter, water treatment system and apparatus comprising the same - Google Patents

Abstract

The present invention relates to a water treatment filter for removing heavy metals, hardness, and chemical substances contained in water. The filter includes fibers, ion exchange resin powder, and activated carbon powder, and the fibers are entangled with each other to form a three-dimensional network. A filter body of a predetermined shape having a network structure is provided, wherein the ion exchange resin powder and activated carbon powder are dispersed in at least the network structure of the filter body, and the ion exchange resin powder and activated carbon powder are dispersed by fibers constituting a three-dimensional network. A water treatment filter containing activated carbon powder is provided.

Description

Water treatment filter, water treatment system and device {WATER TREATMENT FILTER, WATER TREATMENT SYSTEM AND APPARATUS COMPRISING THE SAME}

The present invention relates to a water treatment filter for removing heavy metals, hardness, and chemical substances contained in water, and a water treatment device and system including the water treatment filter.

Conventional products such as filters for water treatment are commercially available or used, for example, BRITA's feature-type water purifier, Whirlpool's WHIRL POOL, Everydrop, and Drinkable Book.

However, the feature-type water purifier shows a low flow rate of 0.3 to 0.6 L/min and a low removal rate of 80-90%, and whirlpool and drinkable books have limitations in removing heavy metals.

For example, a feature-type water purifier generally fills a certain amount of spherical (diameter: 0.3 to 1.2 mm) ion exchange resin into a certain size cartridge to remove heavy metals. These feature-type water purifiers typically increase the removal rate to 90% or more by lowering the flow rate to, for example, 0.1-0.2 L/min, or, conversely, lower the removal rate to 80 to 90% and increase the flow rate, for example, to 0.4-0.5 L. It is set as high as /min.

If the filling amount of ion exchange resin for the cartridge is large, the flow rate of water passing through the cartridge is slow, and conversely, if the filling amount is small, the flow rate of water passing through the cartridge is fast. The faster the water flow rate, the shorter the contact time with the ion exchange resin filled in the cartridge, lowering the removal rate of heavy metals. Conversely, if the water flow rate is slow, the contact time with the ion exchange resin is longer, increasing the heavy metal removal rate. The feature-type water purifier uses the change in removal rate according to the flow rate of water and the contact time between water and ion exchange resin.

As the flow rate of water and the removal rate of heavy metals are inversely proportional, the higher the flow rate, the lower the removal rate, and the higher the removal rate, the lower the flow rate. In some cases, only granular activated carbon is used without adding ion exchange resin to increase the flow rate (Whirlpool's Everydrop, Drinkable Book).

The present invention aims to provide a high-flow and high-performance water treatment filter that has excellent ion and heavy metal removal performance while securing a high purified water flow rate.

Furthermore, the object is to provide a water treatment system and a water treatment device including the water treatment filter.

In one aspect, the present invention provides a filter for water treatment, and the filter for water treatment according to one embodiment includes fibers, ion exchange resin powder, and activated carbon powder, and the fibers are entangled with each other to form a three-dimensional network structure. A filter body is provided, wherein the ion exchange resin powder and activated carbon powder are dispersed in at least a network structure of the filter body, and the ion exchange resin powder and activated carbon powder are bound by fibers constituting a three-dimensional network. Provides a filter for water treatment.

The filter body may have a thickness of 0.1 to 20 mm, and preferably has a density of 0.1 to 1.0 g/cm3.

The water treatment filter preferably contains 5 to 80% by weight of fiber, 1 to 90% by weight of ion exchange resin, and 1 to 90% by weight of activated carbon.

At this time, the fiber is preferably fibrillated and has a plurality of fibrils, and the fibrils may have a thickness of 0.001 to 1 μm.

It is preferable to use the ion exchange resin powder having a size of 10-600㎛.

The ion exchange resin may be one having at least one substituent selected from the group consisting of H, Na, Ca, Mg, OH, and Cl.

The ion exchange resin may have a swelling ratio of 10-350%, which indicates the degree to which the volume changes due to swelling in water, based on the volume in a dry state.

The activated carbon may use at least one activated carbon selected from the group consisting of palm-based activated carbon, charcoal-based activated carbon, pitch-based activated carbon, impregnated activated carbon, and carbon fiber. In addition to the activated carbon, at least one of carbon fiber, zeolite, silver, and KDF You can include one more.

The activated carbon is Iodine No. Those with a particle size of 800 to 2000 can be used, and those with a particle size of 10 to 400㎛ are preferably used.

In another aspect of the present invention, the water treatment filter and a support layer are provided on both sides of the water treatment filter, wherein the water treatment filter and the support layer are laminated, and the support layer is made of at least one of natural fiber and synthetic fiber. Provides a sheet-in water treatment system.

A second support layer may be further included between the water treatment filter and one of the support layers, and the second support layer may be any one of non-woven fabric, woven fabric, and membrane, or a composite of at least two or more.

At this time, the second support layer may be at least one selected from the group consisting of PP, PE, PET, PES, PAN, PVDF, PA, LM, pulp, rayon, tencel, and cotton.

The second support layer preferably uses a material having a pore size of 0.2 to 1.0 μm, and preferably has a porosity of 30-90%.

Furthermore, from another aspect, the present invention provides a water treatment device using two or more water treatment filters, wherein the water treatment filters are arranged in parallel or series. At this time, the water treatment device may be a pitcher, portable water purifier, or capsule water purifier.

The water treatment filter according to one embodiment of the present invention has a dense fiber network structure, thereby reducing the amount of fiber used and supporting fine particle size ion exchange resin and activated carbon within the filter.

As a result, the contact area with the water to be treated is wide, showing a high ion removal rate and heavy metal removal rate, providing excellent water treatment efficiency. Even if water is treated through the surface of the filter, a high flow rate can be realized, realizing high flow rate and high performance at the same time. Provides water treatment filters.

In addition to the effects described above, the effects described in the detailed description of the present invention and effects that are not specifically described but can be recognized by a person skilled in the art from each embodiment of the present invention can also be obtained from at least one embodiment of the present invention. Included in effect.

Figure 1 is a diagram schematically showing a water treatment device used with the filters obtained in Examples 1 to 3.
Figure 2 is a photograph of a water treatment filter manufactured by mixing ion exchange resin, activated carbon, and fiber according to the present invention observed under a microscope.

Hereinafter, a water treatment filter according to each embodiment of the present invention will be described in more detail.

A water treatment filter according to an embodiment of the present invention includes fiber, ion exchange resin powder, and activated carbon powder.

The fiber constitutes a filter body that maintains the shape of the water treatment filter according to the present invention, and a plurality of fibers are entangled with each other to form a three-dimensional network, providing a filter body with a network structure having a predetermined thickness. The fibers are densely entangled to form a network structure, so that the ion exchange resin powder and activated carbon powder supported therein can be firmly confined and retained in large quantities within the filter body. As a result, the water treatment effect can be increased when the filter is used.

More preferably, the fiber has a plurality of fibrils by fibrillation treatment. As the fibers are fibrillated, fibrils of finer thickness form branches, forming a more dense network structure between the fibers. This allows the ion exchange resin powder and activated carbon powder supported in the filter body to have a smaller particle size. Even if it has, it can be maintained in the filter body. As the particle size of the ion exchange resin powder and activated carbon powder decreases, the surface area increases, thereby improving the treatment efficiency of the treated water.

In addition, when using fibers having fibrils by fibrillation, a large amount of the ion exchange resin powder and activated carbon powder can be maintained even if a smaller amount of fiber is used, so a smaller amount of fiber can be used. As a result, the flow rate processed by the filter can be increased.

The fibrillation can be used in the present invention as long as the fiber can be branched by physical and chemical beating action, and the fiber is mixed with water and mechanically treated by a beater or refiner, etc. method can be used.

The fiber is not particularly limited, and synthetic fibers and natural fibers can be used, and pulp of softwood or hardwood can be used. Considering fibrillation, etc., it is more preferable to use pulp of softwood or hardwood.

The fiber may have a thickness of 1 to 90 μm. When using fibers less than 1㎛, there is a problem of a serious decrease in flow rate because the density increases and the pores are extremely reduced, and when it exceeds 90㎛, the pores develop excessively and water only passes through the pores. Therefore, there is a problem of lowering the removal rate.

On the other hand, when fibrillation is performed, the fibrils of the fiber obtained thereby are not particularly limited, but it is preferable to have a thickness of 0.001 μm or more. In the case of less than 0.001㎛, the physical strength of the fibrils is so weak that they may fall off during operation of the filter. Meanwhile, the upper limit of the fibril thickness is not particularly limited, and may be, for example, 1 μm or less.

In one embodiment of the present invention, the filter body preferably has a thickness of 0.1 to 20 mm. If the thickness of the filter body is less than 0.1 mm, it may be difficult to maintain the shape of the filter desired in one embodiment of the present invention, and if it exceeds 20 mm, the resistance to the flow of treated water increases, causing water This reduces the flow rate, making it difficult to achieve high flow rates.

According to one embodiment of the present invention, the filter body preferably has a density of 0.1 to 1.0 g/cm3. Density is related to the high flow characteristics of the filter, and when the density exceeds 1.0 g/cm3, the water flow rate drops significantly. Conversely, if the density is lower than 0.1 g/cm3, the water flow rate is too high and the water passes through without contacting the ion exchange resin powder or activated carbon powder, which may reduce treatment efficiency. Meanwhile, the density can be increased when compression molding to have a predetermined thickness while using a large amount of fibers to maintain the shape.

In one embodiment of the present invention, the water treatment filter includes ion exchange resin powder and activated carbon powder in a filter body made of fiber. The ion exchange resin is used to remove heavy metals and hardness. The ion exchange resin may be a cation exchange resin, an anion exchange resin, etc. depending on the substance to be removed, and may also include a chelate resin, impregnated activated carbon, KDF (Kinetic Degradation Fluxion), etc., if necessary.

It is preferable that the ion exchange resin is contained in powder form because it can increase water treatment efficiency by increasing the surface area. At this time, the ion exchange resin powder can be used having a particle size of 10 to 600㎛. If the particle size of the powder is less than 10㎛, it may be difficult to maintain it in the filter body, and the cost of manufacturing the filter increases. On the other hand, when using ion exchange resin powder with a particle size exceeding 600㎛, water treatment efficiency is reduced due to the small surface area. For example, the ion exchange resin powder may have a particle size of 70 to 150㎛.

Meanwhile, the ion exchange resin powder preferably swells when the completely dried powder is soaked in water and has a volume change rate of 350% or less. The filter according to one embodiment of the present invention is manufactured in a swollen state and then dried. However, there is a risk that the ion exchange resin powder maintained in the filter body in the swollen state may separate from the filter body due to a decrease in volume after drying. Therefore, it is desirable that the volume change rate satisfies the above range.

The ion exchange resin may be one containing substituents such as H ⁺ , Na ⁺ , Ca ^{2 +} , Mg ^{2 +} , OH ^- , Cl ^- , depending on the object to be removed, and one having two or more substituents among these may be used. You can. For example, an H type ion exchange resin can be buffered to contain Na ⁺ in a certain ratio. At this time, the buffering ratio is not limited to this, but may be 80% or less, for example, 5 to 70%.

Meanwhile, the activated carbon serves to remove chemical components contained in the water to be treated, and is selected from the group consisting of palm-based activated carbon, charcoal-based activated carbon, pitch-based activated carbon, impregnated activated carbon, and carbon fiber, depending on the chemical component to be removed. At least one activated carbon can be used. At this time, the activated carbon can be used alone, or a mixture of two or more can be used.

Furthermore, the activated carbon having an Iodine No. of 800 to 2000 can be appropriately selected and used depending on the object to be removed. Iodine No. is an indicator of the pore development of activated carbon. If the Iodine No. is less than 800, there is a problem of low removal efficiency due to a lack of micro-pores, and activated carbon exceeding 2000 has excessive micro-pores. As it develops rapidly, the density of the material decreases and it has the disadvantage of being easily broken.

In addition, it is preferable to use the activated carbon having a particle size of 10 to 400㎛. If the particle size of activated carbon is less than 10㎛, it is difficult to maintain it stably in the filter body, and if it exceeds 400㎛, the specific surface area is small and the removal efficiency of chemicals is low.

In the present invention, in addition to the activated carbon, at least one of carbon fiber, zeolite, silver, and KDF may be further included. Together with activated carbon, these have the ability to remove chemicals contained in water.

In the filter of the present invention, the ion exchange resin powder and activated carbon powder are included in an amount of 1 to 90% by weight and 1 to 90% by weight, respectively, based on 100% by weight of the total weight of the fiber, ion exchange resin powder, and activated carbon powder. and may include residual fibers. For example, the fiber may be included in an amount of 5 to 80% by weight. If the fiber content is less than 5% by weight, it is not suitable for maintaining the shape of the filter. If it exceeds 80% by weight, the fiber content is too high and high flow rate cannot be achieved. In addition, ion exchange resin powder and activated carbon are not suitable for maintaining the shape of the filter. The water treatment performance is low due to the low powder content. For example, the fiber may be included in an amount of 5 to 50% by weight.

The water treatment filter of the present invention can be manufactured by a method similar to the papermaking process. For example, wet laying, wet molding, air laying, needle punching, carding, cross lapping, chemical bonding, thermal bonding, coating (gravure, knife, dipping, etc.) can be applied. Either one of these can be applied, or 2 The above can be applied in combination. In terms of maximizing uniformity, it is preferable to manufacture using wet laying or wet molding processes.

In manufacturing the water treatment filter, the above method can be applied by mixing fiber, activated carbon powder, and ion exchange resin powder with water, and the solid content concentration of the fiber, activated carbon powder, and ion exchange resin is 0.2 to 5%. It can be manufactured by doing so. At this time, suitable additives can also be added as needed for purposes such as strengthening cohesion. Although not limited to this, it is preferable to sequentially add solids to maximize uniformity.

Furthermore, in order to maximize uniformity, the filter loaded with activated carbon and the filter loaded with ion exchange resin can be manufactured separately and then combined.

The water treatment filter of the present invention includes a support layer on both sides and provides a water treatment system. The support layer is laminated on both sides of the water treatment filter to form the shape of the filter system, contributing to increasing shape stability.

The support layer can be formed by using natural fibers, synthetic fibers, pulp, or binders alone or in combination with each other. It is preferable to use pulp, and depending on the purpose, softwood, hardwood, etc. can be used, and if necessary, they can be mixed and used, and synthetic fibers, etc. can also be mixed. At this time, the pulp can be fibrillated and used in the same way as in a water treatment filter.

By appropriately controlling the support layer, the shape and dimensional stability of the water treatment filter of the present invention, flow rate control, etc. can be controlled. Therefore, it can be performed by controlling the fibrillation rate, content, and type of materials such as pulp used in the support layer.

Furthermore, a chemical binder may be added to the support layer to strengthen the bond with the water treatment filter. The binder is not particularly limited, but LM non-woven fabric, PE/PP composite spun non-woven fabric, bi-component non-woven fabric, etc. can be used to improve water flow rate.

A second support layer may be further included between the water treatment filter and at least one support layer. The second support layer protects the water treatment filter of the present invention, prevents the outflow of fine dust contained in the water to be treated, and can perform antibacterial properties, flow rate control, etc.

The second support layer is PP (Polypropylene), PE (Polyethylene), PET (Polyethylene terepthalate), PES (polyether sulfone), PAN (Polyacrylo nitrile), PVDF (Polyvinylidene fluoride), PA (Polyamide), LMPE (Low melting Polyethylene) ), LMPP (Low melting Polypropylene), pulp, rayon, tencel, and cotton, and can be laminated to form non-woven fabrics, woven fabrics, and membranes from these. Not only can these be used singly, but two or more can also be combined. More preferably, non-woven fabric can be used, and nanofiber non-woven fabric and membrane can be combined depending on the purpose.

The second support layer is preferably made of a material with a pore size of 0.2 to 1.0 ㎛ to suppress the outflow of fine dust and remove microorganisms. If the pore size of the second support layer is less than 0.2㎛, the pore structure is dense and the flow rate is reduced. If the pore size is more than 1.0㎛, the pore structure is coarse and the microorganism removal performance is reduced. In addition, the porosity of the second support layer is preferably in the range of 30% to 90%, and nonwoven fabrics or membranes with different pore sizes and porosity can be used in combination.

The first and second support layers can be manufactured separately and then combined with the water treatment filter to manufacture a filter system, and are not particularly limited. Manufacturing processes such as lamination, calendaring, heat sealing, chemical bonding, co-pleating, and lamination can be applied singly, and two or more of these can be applied in combination.

Furthermore, in order to lower the differential pressure, it is desirable to apply a heat sealing or lamination process to the edge to composite three layers of a support layer on one side, a filter layer for water treatment, and a support layer on the other side.

The water treatment filter according to the present invention can treat water by passing water in a direction perpendicular to the surface. At this time, two or more water treatment filters can be used. More specifically, high performance can be achieved by using two or more water treatment filters in series, and water treatment speed can be improved by applying two or more water treatment filters in parallel. Therefore, it is possible to implement a water treatment device in which the water treatment filters are applied in series or parallel. At this time, the water treatment device may be a pitcher, portable water purifier, or capsule water purifier.

Example

Hereinafter, the present invention will be described in more detail through examples. However, the following example is only an example of the present invention, and the present invention is not limited thereto.

Example One

A suspension of 400 g of softwood pulp with an average diameter of 20 ㎛ mixed with 20 L of water was refined in a refiner for 30 minutes to prepare a pulp refinement solution.

Next, 6.25 g of ion exchange resin (Amberlite IRC86) with a particle size distribution (d10-d90) of 10-110 ㎛ and 15.63 g of activated carbon with an average diameter of 120 ㎛ were added to 469 ml of the pulp refining solution. Fiber: ion exchange resin: activated carbon = 30 A mixed solution was prepared by adding the mixture at a weight ratio of %:20%:50%.

Subsequently, 10 L of water was additionally added to the prepared mixed solution, and the water was instantly removed using a water weed machine to prepare a paper-type water treatment filter.

The manufactured water treatment filter was compressed and dried at 70°C and 5kgf for 10 minutes, and then completely dried in an oven at 120°C for 24 hours.

The weight, thickness, and density of the water treatment filter thus obtained were measured, and the results are shown in Table 1.

The water treatment filter prepared above was cut into a circle with a diameter of 90 mm and mounted in a water treatment device of the type shown in FIG. 1, and then water was treated by passing 1 L of an aqueous solution containing 0.05 ppm of cadmium. At this time, the flow rate (LPM) and removal rate (%) were measured, and the results are shown in Table 2.

Example 2

In the same pulp refining solution as in Example 1, 6.25 g of ion exchange resin (Amberlite IRC86) with a particle size distribution (d10-d90) of 110-220 ㎛ and 15.63 g of activated carbon with an average diameter of 120 ㎛ were added to fiber: ion exchange resin: activated carbon = A mixed solution was prepared by adding the mixture at a weight ratio of 30%:20%:50%.

Subsequently, 10 L of water was additionally added to the prepared mixed solution, and the water was instantly removed using a water weed machine to prepare a paper-type water treatment filter.

The manufactured water treatment filter was compressed and dried at 70°C and 5kgf for 10 minutes, and then completely dried in an oven at 120°C for 24 hours.

The weight, thickness, and density of the water treatment filter thus obtained were measured, and the results are shown in Table 1.

The water treatment filter prepared above was cut into a circle with a diameter of 90 mm and mounted in a water treatment device of the type shown in FIG. 1, and then water was treated by passing 1 L of an aqueous solution containing 0.05 ppm of cadmium. At this time, the flow rate (LPM) and removal rate (%) were measured, and the results are shown in Table 2.

Example 3

In the same pulp refining solution as in Example 1, 6.25 g of ion exchange resin (Amberlite IRC86) with a particle size distribution (d10-d90) of 220-330 ㎛ and 15.63 g of activated carbon with an average diameter of 120 ㎛ were added to fiber: ion exchange resin: activated carbon = A mixed solution was prepared by adding the mixture at a weight ratio of 30%:20%:50%.

Subsequently, 10 L of water was additionally added to the prepared mixed solution, and the water was instantly removed using a water weed machine to prepare a paper-type water treatment filter.

The manufactured water treatment filter was compressed and dried at 70°C and 5kgf for 10 minutes, and then completely dried in an oven at 120°C for 24 hours.

The weight, thickness, and density of the water treatment filter thus obtained were measured, and the results are shown in Table 1.

The water treatment filter prepared above was cut into a circle with a diameter of 90 mm and mounted in a water treatment device of the type shown in FIG. 1, and then water was treated by passing 1 L of an aqueous solution containing 0.05 ppm of cadmium. At this time, the flow rate (LPM) and removal rate (%) were measured, and the results are shown in Table 2.

Weight (g) Thickness (㎜) Density (kg/㎥) Example 1 2.95 1.53 28.47 Example 2 3.02 2.5 21.36 Example 3 3.35 3.2 17.67

accumulate
flux
[L] Example 1 Example 2 Example 3 flow rate
[LPM] density
[PPM] removal rate
[%] flow rate
[LPM] density
[PPM] removal rate
[%] flow rate
[LPM] density
[PPM] removal rate
[%] 0 - 0.050 - - 0.050 - - 0.050 - One 0.23 0.002 95.8% 0.42 0.003 94.0% 0.53 0.002 95.8% 3 0.43 0.000 99.2% 0.65 0.003 94.0% 0.75 0.004 92.0% 5 0.48 0.001 98.3% 0.66 0.001 98.0% 0.74 0.004 92.0% 7 0.52 0.001 97.4% 0.60 0.003 94.0% 0.74 0.003 94.0% 9 0.52 0.000 100.0% 0.65 0.002 96.0% 0.76 0.004 92.0% 11 0.53 0.001 98.0% 0.66 0.003 94.0% 0.76 0.004 92.0% 13 0.54 0.001 98.0% 0.67 0.002 96.0% 0.77 0.004 92.0% 15 0.53 0.001 98.0% 0.65 0.002 96.0% 0.77 0.005 90.0% 17 0.54 0.001 98.0% 0.67 0.002 95.3% 0.77 0.004 92.0% 20 0.53 0.001 98.0% 0.67 0.003 94.0% 0.76 0.004 92.0% average 0.485 0.0009 98.07% 0.63 0.0024 95% 0.735 0.0038 92%

As can be seen from Table 1, the same weight was added to the water treatment filters obtained in Examples 1 to 3, but the smaller the particle size, the lower the retention rate, resulting in a slight decrease in weight.

The water treatment filter manufactured according to Example 2 was observed under a microscope. A photograph observed under a microscope of the water treatment filter is shown in Figure 2. From Figure 2, it can be seen that the yellow and shiny ion exchange resin and black activated carbon maintain a well-fixed form by the white fibers and fibrils of the fibers.

Comparative example 1 to 3

Water was treated using commercially available water treatment filters, such as MAVEA (BRITA, Germany), Brita Classic (BRITA, Germany), and Zero Water (Zero Water, USA), by passing 1 L of a 0.05 ppm cadmium aqueous solution at a time in the same manner as in Example 1. At this time, the flow rate (LPM) and removal rate (%) were measured, and the results are shown in Table 3.

Cumulative flow
[L] Comparative Example 1 Comparative Example 2 Comparative Example 3 flow rate
[LPM] density
[PPM] removal rate
[%] flow rate
[LPM] density
[PPM] removal rate
[%] flow rate
[LPM] density
[PPM] removal rate
[%] 0 0.050 0.050 0.050 One 0.13 0.007 86.0% 0.25 0.004 92.0% 0.10 0.006 88.0% 3 0.14 0.003 94.0% 0.29 0.006 88.0% 0.11 0.002 96.0% 5 0.16 0.002 96.0% 0.33 0.005 90.0% 0.12 0.000 100.0% 7 0.17 0.002 96.0% 0.35 0.004 92.0% 0.13 0.000 100.0% 9 0.16 0.000 100.0% 0.36 0.004 92.0% 0.12 0.000 100.0% 11 0.18 0.002 96.0% 0.34 0.005 90.0% 0.12 0.000 100.0% 13 0.16 0.003 94.0% 0.34 0.006 88.0% 0.12 0.000 100.0% 15 0.17 0.003 94.0% 0.36 0.006 88.0% 0.13 0.000 100.0% 17 0.16 0.003 94.0% 0.34 0.006 88.0% 0.12 0.000 100.0% 20 0.16 0.003 94.0% 0.35 0.005 90.0% 0.13 0.000 100.0% average 0.159 0.0028 94% 0.331 0.0051 90% 0.12 0.0008 98%

As can be seen from Tables 2 and 3, Examples 1 to 3 differ only in the particle size distribution of the ion exchange resin and all other conditions are the same, with Example 1 having the smallest particle size and Example 3 The particle size of the ion exchange resin is the largest.

As can be seen from Table 2, in Example 1, which has the smallest particle size distribution, the flow rate is the slowest, but the average removal rate is the highest at 98%. As the particle size distribution increases, the flow rate becomes faster and the removal rate gradually decreases. represents. As larger particles of ion exchange resin are used, more pores develop, so the density decreases and the flow speed increases.

However, in all cases, the removal rate exceeded the target value of 90% and showed a flow rate of 0.53 to 0.73 LPM, which was significantly faster than the flow rate of 0.1 to 0.3 LPM when the filter of the comparative example was used.

Claims (20)

Filters for water treatment;
Support layers on both sides of the water treatment filter; and
A second support layer is included between the water treatment filter and one of the support layers,
The water treatment filter and the support layer are laminated, and the support layer is a sheet made of at least one of natural fibers and synthetic fibers,
The second support layer has a pore size in the range of 0.2 to 1.0 μm,
The water treatment filter includes fiber, ion exchange resin powder, and activated carbon powder,
The fibers are entangled with each other to provide a filter body of a predetermined shape having a three-dimensional network structure,
A water treatment device wherein the ion exchange resin powder and activated carbon powder are dispersed in at least the network structure of the filter body, and the ion exchange resin powder and activated carbon powder are bound by fibers constituting a three-dimensional network. The water treatment device of claim 1, wherein the second support layer is any one of non-woven fabric, woven fabric, and membrane, or a composite of at least two or more. The water treatment device of claim 1, wherein the second support layer is made of at least one selected from the group consisting of PP, PE, PET, PES, PAN, PVDF, PA, LMPA, LMPP, pulp, rayon, tencel, and cotton. . The water treatment device of claim 1, wherein the second support layer has a porosity in the range of 30 to 90%. The water treatment device according to claim 1, wherein two or more water treatment filters are used, and the water treatment filters are arranged in parallel or series. The water treatment device of claim 1, wherein the water treatment device is a pitcher, portable water purifier, or capsule water purifier. delete The water treatment device according to claim 1, wherein the filter body has a thickness of 0.1 to 20 mm. The water treatment device according to claim 1, wherein the filter body has a density of 0.1 to 1.0 g/cm3. The water treatment device according to claim 1, comprising 5 to 80% by weight of fiber, 1 to 90% by weight of ion exchange resin, and 1 to 90% by weight of activated carbon. The water treatment device according to claim 1, wherein the fiber is fibrillated and has a plurality of fibrils. The water treatment device of claim 11, wherein the fibrils have a thickness of 0.001 to 1㎛. The water treatment device according to claim 1, wherein the ion exchange resin powder has a size of 10-600㎛. The water treatment device according to claim 1, wherein the ion exchange resin has at least one substituent selected from the group consisting of H, Na, Ca, Mg, OH, and Cl. The water treatment device according to claim 1, wherein the ion exchange resin has a swelling rate of 10-350%, which indicates the degree to which the volume changes due to swelling in water, based on the volume in a dry state. The water treatment device according to claim 1, wherein the activated carbon is at least one activated carbon selected from the group consisting of palm-based activated carbon, charcoal-based activated carbon, pitch-based activated carbon, impregnated activated carbon, and carbon fiber. The water treatment device according to claim 1, further comprising at least one of carbon fiber, zeolite, silver, and KDF (Kinetic Degradation Fluxion) along with the activated carbon. The method of claim 1, wherein the activated carbon is Iodine No. 800 to 2000 water treatment equipment. The water treatment device according to claim 1, wherein the activated carbon has a particle size of 10 to 400㎛. delete

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