KR102642211B1 - Water treatment filter and 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. Provided is a pulp of a predetermined shape having a network structure, wherein the ion exchange resin powder and activated carbon powder are dispersed in at least the network structure of the pulp, and the ion exchange resin powder and activated carbon powder are dispersed by fibers constituting a three-dimensional network. This constrained filter for water treatment is provided.

Description

Water treatment filter using pulp, water treatment system and device including the water treatment filter {WATER TREATMENT FILTER AND 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 pitch-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 heavy metal 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-performance water treatment filter with excellent ion and heavy metal removal performance.

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

One aspect of the present invention relates to a water treatment filter. According to one embodiment of the present invention, pulp of a predetermined shape having a network structure of a three-dimensional network in which fibers are entangled with each other, ion exchange resin powder and activated carbon within the network structure of the pulp. A filter for water treatment is provided in which the powder is dispersed and confined, and the fibers are coniferous fibers having a thickness of 20 ㎛ or more and 90 ㎛ or less.

The pulp preferably has a thickness of 0.5 to 20 mm, and also preferably has a density of 0.1 to 1.0 g/cm3.

The fiber may be fibrillated and have a plurality of fibrils, and the fibrils may have a thickness of 0.001 to 1 μm.

The water treatment filter may include 5 to 80% pulp, 1 to 90% by weight ion exchange resin, and 1 to 90% activated carbon.

The ion exchange resin powder may have 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 preferably 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.

In addition, the activated carbon may be at least one selected from the group consisting of coconut-based activated carbon, charcoal-based activated carbon, pitch-based activated carbon, impregnated activated carbon, and carbon fiber, and together with the activated carbon, at least one of carbon fiber, zeolite, silver, and KDF. It may further include.

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㎛ can be used.

Another aspect of the present invention relates to a water treatment system, which includes a water treatment filter and a support layer on both sides of the water treatment filter, wherein the water treatment filter and the support layer are laminated, and the support layer includes natural fibers and synthetic fibers. A water treatment system is provided that is a sheet of at least one of the fibers.

A water treatment system may further include a second support layer 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.

The second support layer may be made of at least one selected from the group consisting of PP, PE, PET, PES, PAN, PVDF, PA, LMPE, LMPP, pulp, rayon, tencel, and cotton.

The second support layer may have a pore size in the range of 0.2 to 1.0 μm and a porosity in the range of 30 to 90%.

Another aspect of the present invention relates to a water treatment device, and provides a water treatment device using two or more water treatment filters, wherein the water treatment filters are arranged in parallel or in 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 can obtain a filter with a dense network structure by using fibers obtained from coniferous trees, thereby reducing the amount of fiber used in the filter while adding fine particle size ion exchange resin and activated carbon to the filter. It can be supported.

As a result, a high-performance water treatment filter can be obtained that can achieve excellent water treatment efficiency by showing a high ion removal rate and heavy metal removal rate with a large contact area with the water to be treated.

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.
Figures 2 and 3 are microscopic photographs of a water treatment filter in which an ion exchange resin and activated carbon are dispersed in pulp as an embodiment of the present invention. Figure 2 is a surface of the water treatment filter, and Figure 3 is a view of the water treatment filter. This is a photo taken of a cross section.

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 fibrous pulp, ion exchange resin powder, and activated carbon powder.

The fiber constitutes the pulp that maintains the shape of the water treatment filter according to the present invention, and a plurality of fibers are intertwined to form a three-dimensional network, providing a filter with a network structure having a predetermined thickness. By tightly entangling the fibers to form a network structure, the ion exchange resin powder and activated carbon powder supported therein can be firmly confined and retained in large amounts within the pulp, thereby increasing the water treatment effect when using the filter.

It is preferable to use fiber obtained from coniferous trees. These softwood fibers usually have a fiber thickness of 20 ㎛ or more, but in the present invention, for example, fibers with a thickness of 20 to 90 ㎛ can be used. According to the present inventors' experiments, when fibers of less than 20㎛ are used, the density increases and the structure of the filter becomes too dense, which causes the problem that the water treatment speed is very slow and the flow rate is very low unless pressurized using a pump or the like. If it exceeds , there is a problem that the pores of the filter are excessively developed and water simply passes through the pores, thereby lowering the water treatment efficiency for removing heavy metals, etc.

More preferably, the softwood fiber is one that has a plurality of fibrils by fibrillation treatment. By the fibrillation, the softwood fibers can have branches with a finer thickness, thereby forming a more dense network structure between the fibers, and this allows the ion exchange resin powder and activated carbon powder supported in the pulp to have a smaller particle size. Even if one having a is used, it can be stably fixed within the pulp. This allows the surface area to increase as the particle size of the ion exchange resin powder and activated carbon powder becomes smaller, 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, thereby reducing the amount of fiber used, thereby reducing the amount of fiber used in the filter. The treatment flow rate 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.

When using the fibrillated softwood fiber, 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. If the thickness is less than 0.001㎛, the physical strength of the fibrils is so weak that they can easily 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.

Pulp manufactured from the softwood fibers by a method such as papermaking can be used as a support for the filter according to the present invention. At this time, the pulp preferably has a thickness of 0.5 to 20 mm. Softwood fibers are generally thick, so voids appear. Therefore, if the pulp thickness is less than 0.5 mm, the removal rate of heavy metals, etc. is very low, and if it exceeds 20 mm, the resistance to the flow of treated water is low. If it increases too much, it reduces the water flow rate.

According to one embodiment of the present invention, the pulp 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 fiber-based pulp. 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 pulp, and the manufacturing cost 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 by manufacturing in a swollen state and then drying, but there is a risk that the ion exchange resin powder maintained in the pulp in the swollen state may separate from the pulp 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 pulp, 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 softwood fibers used to manufacture the filter of the present invention have a thickness of 20 to 90 ㎛, and the pulp obtained using them has large pores within the pulp. Because of this, it is possible to secure a sufficient water flow rate for water treatment even without applying special pressure in the filter using the pulp.

Meanwhile, the water to be treated is treated by contacting the ion exchange resin and activated carbon powder supported in the pulp to remove heavy metals contained in the water. When pressurized to secure a higher water flow rate, the water to be treated is removed through the large pores of the pulp. There is a problem in that the amount of water passing through the ion exchange resin and activated carbon powder increases, which reduces the water treatment ability.

Therefore, it is preferable that the filter of the present invention performs water treatment using gravity without special pressurization. According to various experiments by the present inventors, it was confirmed that the water treatment filter obtained by the present invention provides a water flow rate of about 0.1 to 1.5 L/min only through the action of gravity and removes more than 90% of heavy metals contained in water. However, when the water flow rate was increased under pressure, the removal ability of heavy metals etc. tended to decrease.

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 fibers with an average diameter of 30 ㎛ mixed with 20 L of water was refined in a refiner for 30 minutes to prepare a pulp refining 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. Softwood 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 mixture prepared above, and then the water was instantly removed using a water wetting machine to prepare pulp.

The pulp 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 to prepare a water treatment filter.

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 mixed into softwood 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 mixture prepared above, and then the water was instantly removed using a water wetting machine to prepare pulp.

The pulp 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 to prepare a water treatment filter.

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 mixed into softwood 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 mixture prepared above, and then the water was instantly removed using a water wetting machine to prepare pulp.

The pulp 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 to prepare a water treatment filter.

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%

The water treatment filter manufactured according to Example 2 was observed under a microscope. Microscopic photographs of the water treatment filter are shown in Figures 2 and 3. Figure 2 is a photograph of the surface of a water treatment filter, and Figure 3 is a photograph of its cross section. From Figures 2 and 3, 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

Using commercially available water treatment filters such as MAVEA (BRITA, Germany), Brita Classic (BRITA, Germany), and Zero Water (Zero Water, USA), water was treated by passing 1 L of cadmium 0.05 ppm aqueous solution 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. The particle size of the ion exchange resin in Example 1 is the smallest, and Example 3 The particle size of the ion exchange resin is the largest.

As can be seen from Table 2, in the case of 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; And a support layer on both sides of the water treatment filter,
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 water treatment filter includes pulp of a predetermined shape having a network structure of a three-dimensional network in which fibers are entangled with each other;
Ion exchange resin powder and activated carbon powder are dispersed and confined within the network structure of the pulp,
The fiber is a coniferous fiber having a thickness of 20㎛ or more and 90㎛ or less,
Further comprising a second support layer between the water treatment filter and one of the support layers,
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 system 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, LMPE, LMPP, pulp, rayon, tencel, and cotton. .
The water treatment system according to claim 1, wherein the second support layer has a pore size in the range of 0.2 to 1.0㎛.
The water treatment system of claim 1, wherein the second support layer has a porosity in the range of 30 to 90%.
The water treatment system according to claim 1, wherein the pulp has a thickness of 0.5 to 20 mm.
The water treatment system of claim 1, wherein the pulp has a density of 0.1 to 1.0 g/cm3.
The water treatment system of claim 1, wherein the filter is fibrillated and has a plurality of fibrils.
The water treatment system according to claim 7, wherein the fibrils have a thickness of less than 0.001 to 1㎛.
The water treatment system according to claim 1, comprising 5 to 80% by weight of pulp, 1 to 90% by weight of ion exchange resin, and 1 to 90% by weight of activated carbon.
The water treatment system according to claim 1, wherein the ion exchange resin powder has a size of 10-600㎛.
The water treatment system 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 system 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 system 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 system according to claim 1, further comprising at least one of carbon fiber, zeolite, silver, and KDF along with the activated carbon.
The method of claim 1, wherein the activated carbon is Iodine No. 800 to 2000 water treatment system.
The water treatment system according to claim 1, wherein the activated carbon has a particle size of 10 to 400㎛.
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