JP2006231147A - Cartridge for water purifier and water purifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cartridge for a water purifier in which antibacterial ion eluting members having different antibacterial ion elution quantities are combined to elute antibacterial ions so that antibacterial effect can be given over a long period of time without being influenced by water flowing conditions. <P>SOLUTION: The water purifier is equipped with a filtering cartridge which is composed of a plurality of filter media and hollow fiber membranes for treating city water. The filter medium comprises an adsorbent layer which has functions of adsorbing organic materials and heavy metals in the city water and an antibacterial ion eluting member which elutes metal ions having antibacterial performance. The adsorbent layer and the antibacterial ion eluting member are disposed in this order in an axial direction of the cartridge for the water purifier. The antibacterial ion eluting member is constituted by combining two or more kinds of antibacterial ion eluting members having different elution quantities of metal ions with antibacterial performance. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a water purifier that purifies tap water, and more particularly, to prevent bacterial contamination in a water purification flow path, a water purifier cartridge that includes an antibacterial ion elution member, and water purification using the cartridge Related to the vessel.

  Conventionally, as a water purifier cartridge that purifies tap water by connecting to a water tap or water pipe, it is filled with a filter medium that decomposes free chlorine contained in water and a hollow fiber membrane that removes bacteria contained in water There are many known. By passing these filter media, the tap water is purified, but its capacity is limited, so the user replaces it with a new cartridge as necessary.

Examples of the filter medium for decomposing free chlorine contained in tap water include granular activated carbon as described in Patent Document 1 and a fibrous activated carbon molded body as described in Patent Document 2. Purified water that decomposes free chlorine with granular activated carbon or fibrous activated carbon is suitable for drinking with no odor of chalk, but if bacteria in the air invade after leaving for a long period of time, bacteria are more likely to grow than tap water. . The same applies to the water inside the water purifier, and if bacteria adhere to the water purification outlet, the bacteria may grow in the purified water collected between the outlet of the cartridge and the water purification outlet of the water purifier.
As a countermeasure, Patent Document 3 describes a method of eluting silver ions into purified water using activated carbon impregnated with silver. According to this, the inside of the water purifier is dissolved by the eluted silver ions. Bacterial growth in water accumulated in water can be suppressed.

However, when granular activated carbon is used as activated carbon, the antibacterial effect can be exhibited by adding silver to granular activated carbon, but the performance is low in terms of decomposition of free chlorine. On the other hand, in order to enhance both the antibacterial effect and the chlorine removal performance, it is preferable to use fibrous activated carbon. However, in that case, it is difficult to attach silver to the fibrous activated carbon due to a problem in the production method. Therefore, in order to satisfy both chlorine removal performance and antibacterial properties that are practically required for water purifiers with a simple manufacturing method, it is necessary to use both fibrous activated carbon and granular activated carbon imparted with antibacterial properties.
Therefore, first, when forming the fibrous activated carbon, it is conceivable to mix granular activated carbon impregnated with silver. However, in this case, there is a problem that the silver ions eluted from the granular activated carbon are adsorbed on the fibrous activated carbon having a high adsorption rate, and eventually the silver ions are not eluted in the purified water.

  Further, Patent Document 4 describes a configuration in which granular activated carbon is filled downstream of the fibrous activated carbon. If a granular activated carbon impregnated with silver is used in this configuration, it is eluted from the granular activated carbon during water flow. Silver ions are not adsorbed on the fibrous activated carbon. However, when the granular activated carbon and the hollow fiber membrane module are arranged inside the fibrous activated carbon formed into a cylindrical shape, the outer diameter of the cartridge is remarkably increased. On the other hand, in order to reduce the outer diameter, the flow path and the raw water flow of each filter medium When the thickness in the direction is reduced, the filter medium in the portion near the raw water inlet and the purified water outlet where the water resistance is small, that is, the upper fibrous activated carbon, granular activated carbon, and hollow fiber membrane are more likely to be used. The ratio increases. When the outer diameter of the cartridge is remarkably increased, a thick cartridge becomes an obstacle even if it is a stationary type in which the water purifier cartridge is placed in the sink of the kitchen or an undersink type in which the water purifier cartridge is placed in the storage section below the sink.

Furthermore, Patent Document 5 describes a configuration in which fibrous activated carbon and granular activated carbon supporting silver are arranged in this order in the axial direction, so that silver ions are not adsorbed on the fibrous activated carbon, and the filter medium. Is used efficiently and can be stored compactly under the sink without increasing the outer diameter of the cartridge. However, since only one type of granular activated carbon supporting silver is used, for example, immediately after running tap water, silver ions more than necessary temporarily elute into the purified water. There is a risk of depletion of ions.
JP 11-47733 A Japanese Patent Laid-Open No. 9-248557 JP-A-6-23265 JP 2001-170621 A (for example, FIG. 2) JP 2004-290847 A

  In view of the above-mentioned problems, the object of the present invention is to combine antibacterial ion elution members having different antibacterial ion elution amounts so that the antibacterial ions have an antibacterial effect for a long period of time regardless of the water flow conditions. It is to provide a cartridge for a water purifier that can be eluted as described.

  The present invention for solving the above problems is a water purifier cartridge comprising a plurality of filter media for treating tap water and a hollow fiber membrane, the filter media adsorbing organic substances and heavy metals in tap water, and residual chlorine. It includes an adsorbent layer that also has the function of decomposing and removing, and an antibacterial ion eluting member that elutes metal ions having antibacterial performance, and the adsorbent layer is disposed upstream of the antibacterial ion eluting member in the axial direction of the water purifier cartridge. In addition, the antibacterial ion elution member is characterized by being configured by combining at least two types of antibacterial ion elution members having different antibacterial metal ion elution amounts.

Here, the adsorbent layer is preferably a molded body containing activated carbon and a heavy metal adsorbent, and the antibacterial ion elution member is preferably one in which a base material is supported by silver and / or a copper compound.
At this time, the silver and / or copper compound is a compound containing a base of any one of halide salt, nitrate salt, sulfate salt, phosphate salt, sulfide salt and oxide salt, and the base material is at least granular activated carbon or ceramics. It preferably consists of one type.
At least one of the antibacterial ion eluting members (antibacterial ion eluting member A) has an elution amount of silver and / or copper ions of 5 MPa after 6 L of water flow at a water pressure of 0.05 MPa and a raw water temperature of 20 ° C. ˜50 ppb and less than 5 ppb after 5,000 L of water flow, and another type (antibacterial ion elution member B) is preferably 5 ppb or less after 6 L of water flow and 5 to 50 ppb after 5,000 L of water flow, It is also preferable that the ratio of the antibacterial ion elution members A and B is a ratio by weight ratio A / B = 50/50 to 80/20.

Furthermore, it is preferable that at least two types of antibacterial ion eluting members are filled in a laminated state or a mixed state.
And the water purifier provided with the cartridge for water purifiers in any one of said is also a preferable aspect.

  In the water purifier cartridge of the present invention, the chlorine removal filter medium and the antibacterial ion elution member that elutes metal ions having antibacterial performance are arranged in this order in the axial direction of the water purifier cartridge, so that free chlorine is decomposed. It is possible to provide delicious water that does not have a smell of lime. At the same time, metal ions having antibacterial performance can be appropriately eluted, so that growth can be suppressed even if bacteria adhere to the water purification outlet, and space saving and effective use of filter media can be achieved. .

  And a free chlorine can be decomposed | disassembled and removed more reliably by using a molded object containing fibrous activated carbon as a chlorine removal filter medium. Further, the antibacterial ion elution part is filled with two or more types of antibacterial ion elution members having different silver and / or copper compound loading methods, so that the silver and It is possible to elute copper ions over a long period of time within an appropriate and safe range. When the antibacterial ion elution member is stacked with two kinds of granular activated carbon carrying a silver compound, elution of silver ions can be easily controlled. And the water purifier equipped with these water purifier cartridges can provide delicious water with no odor, and at the same time has high safety that can suppress the growth of bacteria in the water that stays inside the water purifier. Can be provided together.

  Hereinafter, preferred embodiments of the present invention will be described. In addition, this invention is not limited to the following embodiment, What is necessary is just to be able to achieve the objective of the said invention.

  As shown in the longitudinal sectional view of FIG. 1, the water purifier cartridge 1 of the present invention has a substantially cylindrical shape, and an adsorbent obtained by molding a housing 2, fibrous activated carbon and a heavy metal adsorbent with a binder. The antibacterial ion elution part 4 arranged on the downstream side in the axial direction of the water purifier cartridge with respect to the adsorbent layer 3 and the adsorbent layer 3, and arranged downstream of the adsorbent layer 3 and the antibacterial ion elution part 4 in the raw water flow direction The hollow fiber membrane module 5 is used.

  First, the housing 2 will be described.

  The housing 2 includes a substantially cylindrical body 11, a lid 14 having a raw water receiving port 12 and a purified water supply port 13, and a transparent window 16 fitted to the body 11 via a seal member such as an O-ring 17. Become. The lid 14 is screwed to the body 11 via a seal member such as an O-ring 15.

  Next, the adsorbent layer 3 will be described.

  The adsorbent layer 3 includes an activated carbon molded body 21 formed into a cylindrical shape, an inner circumferential nonwoven fabric 22 of the activated carbon molded body 21, an outer circumferential nonwoven fabric 23, and a reinforcing material 24 disposed further inside the inner circumferential nonwoven fabric 22. And an upstream cap 25 and a downstream cap 26 that are bonded to the axial end of the activated carbon molded body 21. The activated carbon molded body 21 has a function of adsorbing organic substances and heavy metals in tap water and decomposing and removing residual chlorine. Here, organic substances are harmful organic substances contained in tap water such as trihalomethane, heavy metals are heavy metals such as lead that are eluted from lead pipes for water supply, and residual chlorine is free residual chlorine and bound residues contained in tap water for sterilization. It refers to chlorine and so on.

  The activated carbon molded body 21 is formed by mixing activated carbon, a binder, and a heavy metal adsorbent. Activated carbon has various shapes such as fibrous, granular, and powder, and is not particularly limited in the present invention. However, the use of fibrous activated carbon is preferable in terms of easy processing into a molded body. As the fibrous activated carbon, a material using a phenol resin as a raw material can be used, and as the binder, a thermoplastic fiber having a core-sheath structure of polypropylene and polyethylene can be used. Neither the raw material of fibrous activated carbon nor a binder is limited to the said material at all. As the heavy metal adsorbent, zeolite or titanosilicate having a high ability to adsorb lead contained in tap water is preferable, but an ion exchange resin, a chelate resin, or the like can be appropriately selected.

  The upstream cap 25 and the downstream cap 26 are resin molded products for forming a flow path, and are bonded to the end portions in the axial direction of the activated carbon molded body 21. The adhesive is not particularly limited, but a highly safe silicone-based or urethane-based adhesive is preferably used. The upstream cap 25 is fixed to an outer peripheral surface of a hollow fiber case 43 described later and a seal member such as an O-ring 45, and the downstream cap 26 is a seal member such as an inner surface of the body 11 and an O-ring 27. It is fixed through. As a result, a flow path is formed and water flows from the outer peripheral side of the activated carbon molded body 21 to the inner peripheral side. The method of flowing in the radial direction has a smaller resistance to water flow than the method of flowing in the axial direction, and can secure a sufficient amount of purified water.

  The reinforcing member 24 is a cylindrical and net-like resin molded product, and supports the activated carbon molded body 21 when water passes from the outside to the inside of the activated carbon molded body 21, so that the activated carbon molded body 21 is caused by a pressure difference between inside and outside. Is prevented from being deformed to the inner diameter side or being damaged, and a flow path is formed.

  Next, the antibacterial ion elution part 4 is demonstrated.

  The antibacterial ion eluting unit 4 includes an antibacterial ion eluting member 31 having a base material supporting silver and / or a copper compound that elutes metal ions having antibacterial properties such as silver and copper, an outer peripheral side cylinder 36, and a primary filter. 34 and a secondary filter 35.

  The antibacterial ion eluting member 31 is made by supporting an antibacterial silver and / or copper compound such as silver or copper on a base material, and may be used as it is or as a molded body using a binder. . Silver and / or copper compounds are compounds that exhibit an antibacterial effect and elute within a safe range (for example, silver is not more than 0.1 mg / L (= 100 ppb) drinking water standard of US Environmental Protection Agency EPA). A method of supporting the base material is preferable, and the silver and / or copper ion elution amount as a whole cartridge is preferably in the range of 5 to 100 ppb, more preferably in the range of 5 to 50 ppb. As the form of the compound, the elution amount can be realized when the compound contains a base of any one of halide salt, nitrate salt, sulfate salt, phosphate salt, sulfide salt and oxide salt.

Here, the silver and / or copper ion concentration in the present invention is obtained by sampling the purified water passed through the cartridge into a sampling container such as a glass bottle, and adding about 1% of nitric acid of the volume to completely ionize silver or copper. Then, numerical values analyzed by ICP (Inductively Coupled Plasma Atomic Emission Spectrometer) or atomic absorption spectrometry are shown.
As the base material, granular activated carbon is widely used in water treatment applications and is preferable in that it can be obtained at a low cost. However, a material generally used as a water treatment filter medium such as ceramics may be used. The raw material of granular activated carbon is preferably inexpensive and stable quality coconut shell, charcoal, or a phenol resin that can be processed uniformly, but is not particularly limited as long as it is a safe raw material that does not elute harmful substances from the raw material itself. Absent. In addition, when a zeolite having an ion exchange function is selected from ceramics, it is preferable in that the antibacterial ions can be preliminarily substituted and supported by cations inside the zeolite. As the size of the base material, a size having a surface area or volume capable of sufficiently supporting the antibacterial ion eluting member and having a small water resistance may be selected. In the case of granular activated carbon, about 20 to 150 mesh is preferable. When the particle size is 20 mesh or less, the surface area that can be supported is reduced although the resistance to water flow is small. Further, when the particle size is 150 mesh or more, the water flow resistance may increase. In addition, the mesh said here has pointed out the magnitude | size classified by the sieve for a test prescribed | regulated by Japanese Industrial Standard (JIS) Z8801. 20 mesh corresponds to about 0.85 mm, and 150 mesh corresponds to about 0.1 mm.

  When only one type of antibacterial ion eluting member is used, if the silver and / or copper compound is easily eluted in water, the period of antibacterial ability is shortened. Moreover, if hot tap water is accidentally passed, antibacterial ions exceeding the reference value may be eluted. In order to solve such problems, by combining two or more antibacterial ion elution members with different elution capacities under the same water flow conditions, while maintaining the antibacterial capability over a long period of time, the safety of satisfying water quality standards Highly purified water can be supplied.

At least one of the antibacterial ion eluting members has an antibacterial ion concentration in purified water of 5 to 50 ppb after 6 L of water when water is passed through tap water at a pressure of 0.05 MPa and a temperature of 20 ° C. If it is less than 5 ppb after 5,000 L, silver and / or copper ions can be supplied to the purified water immediately after the start of water flow (hereinafter, the antibacterial ion eluting member having this eluting ability will be referred to as antibacterial ion eluting member A). Called).
On the other hand, different types of antibacterial ion elution members are less than 5 ppb after 6 L of water and 5 to 50 ppb after 5,000 L of water when water is passed at tap water pressure of 0.05 MPa and temperature of 20 ° C. If there is, the minimum necessary silver and / or copper ions can be supplied to the purified water over a long period of time (hereinafter, the antibacterial ion eluting member having the eluting ability is referred to as an antibacterial ion eluting member B).

As described above, if the antibacterial ion eluting member A and the antibacterial ion eluting member B are combined and filled in the cartridge, the cartridge as a whole can be antibacterial over a long period of time, regardless of whether the water is passed or not used. Necessary silver and / or copper ions can be eluted into the purified water.
The supported amount of the silver and / or copper compound only needs to satisfy the above elution range. Although the elution amount varies depending on the water temperature, the water flow rate, etc., the elution amount of silver and / or copper ions of about 5 to 100 ppb is obtained when the amount is about 0.1 to 3% by weight with respect to the base material. When the supported amount is less than 0.1% by weight, silver and / or copper ions are hardly eluted or antibacterial ions may be completely eluted from the supported compound while the total water flow rate is small. On the other hand, if the loading amount exceeds 3% by weight, silver and / or copper ions of 100 ppb or more which are water quality standards may be continuously eluted, which is not preferable.

  The mixing ratio of the antibacterial ion eluting members with different loading methods depends on the amount of silver and / or copper compound supported and the water flow rate, but the ratio of using the antibacterial ion eluting member A and the antibacterial ion eluting member B is the weight ratio. If A / B = 50/50 to 80/20, the elution amount of silver and / or copper ions as a whole cartridge can be about 5 to 50 ppb. If the antibacterial ion elution member A is 80% or more, silver and / or copper ions are likely to be eluted when water is passed, which may exceed the water quality standard of 100 ppb. Further, when the antibacterial ion elution member A is 50% or less, the elution from the antibacterial ion elution member A is reduced when water is passed, so that the antibacterial effect in the purified water may be reduced. A more preferred ratio is A / B = 60/40 to 70/30 as a weight ratio.

  In addition, as a method for filling the antibacterial ion eluting member, there are a method of mixing and filling two or more types of antibacterial ion eluting members, and a method of laminating. When mixing, there is a merit that the cartridge can be filled at once, but if the allowable range of the mixing ratio is narrowed, the mixing variation may affect the elution ability. In the case of stacking, the number of times of filling increases and the production cost increases, but the blending ratio is more accurate than in the case of mixing, and the amount of elution is easy to control. As described above, both mixing and laminating have advantages and disadvantages, but laminating is more preferable in terms of controlling an accurate elution amount. The order of lamination is not particularly limited, but when the base material is granular activated carbon, the antibacterial ion elution member is disposed downstream in consideration of adsorption of a part of silver and / or copper ions. Is more preferable.

  As an example of a preferred embodiment of the antibacterial ion eluting member, a silver impregnated activated carbon having a particle size of 24 to 42 mesh, in which granular activated carbon made from coconut shell is used as a base material and 1% by weight of a silver compound is supported on the surface or inside thereof is used. For example, since the water resistance is small and the surface area per unit volume is large, silver ions are easily eluted, and the cartridge can be easily manufactured.

  The primary filter 34, the secondary filter 35, and the outer peripheral side cylinder 36 are members that form a space for accommodating the antibacterial ion elution member 31 together with the hollow fiber case 43 described later. Both the primary filter 34 and the secondary filter 35 have a hollow disk shape, and the mesh fiber filter 33 is fused to the water passage hole 32. The primary filter 34 and the secondary filter 35 are fitted on the outer peripheral surface of the hollow fiber case 43 on the inner peripheral side and the outer cylinder 36 on the outer peripheral side, so that the antibacterial ion elution member 31 does not leak to the outside. So that it is fixed. The raw material of the outer cylinder 36, the primary filter 34, and the secondary filter 35 is not particularly limited, but is safe, inexpensive, and accurately moldable ABS (acrylonitrile / budadiene / styrene) resin or PP. (Polypropylene) resin is preferably used. Further, the raw material of the mesh fiber 33 is not particularly limited, but safe and inexpensive PET (polyethylene terephthalate) fiber is preferably used because it has good adhesiveness with the raw material of the primary filter 34 and the secondary filter 35.

  Next, the hollow fiber membrane module 5 will be described.

  The hollow fiber membrane module 5 mainly includes a hollow fiber membrane bundle 41, a curable resin 42, a hollow fiber case 43, and the like.

A hollow fiber membrane bundle 41 in which a plurality of hollow fiber membranes are bundled and folded in an inverted U shape is housed inside the hollow fiber case 43, and both ends of the hollow fiber membrane bundle 41 are disposed at the hollow fiber case 43. Are sealed and fixed (potted) with a curable resin 42 (sealing agent) filled between the hollow fibers and between the hollow fibers and the hollow fiber case 43. Each hollow fiber membrane has a potting portion partially cut and removed, so that the end is opened toward the purified water supply port 13.
The hollow fiber case 43 of the hollow fiber membrane module 5 is fitted and erected on the lid 14 via a seal member such as an O-ring 44.

Next, with respect to the action of the water purifier cartridge 1 configured as described above, see FIG. 2 showing a state where the water purifier cartridge 1 is mounted on the undersink water purifier, and FIG. 3 showing a longitudinal sectional view of the cartridge. While explaining.
When the water purifier valve 52 provided in the water faucet 51 is opened, tap water flows into the water purifier cartridge 1 from the raw water receiving port 12. First, tap water flows in the axial direction of the water purifier cartridge and in the radial direction from the outer peripheral surface of the activated carbon molded body 21 disposed in the adsorbent layer 3 to the inner peripheral surface. Free residual chlorine is generated by the fibrous activated carbon. At the same time, 2MIB (methylisoborneol) and trihalomethane, which are causative substances of mold odor, are adsorbed. Further, lead ions are adsorbed and removed by the heavy metal adsorbent. Fibrous activated carbon has a higher performance of decomposing free chlorine than granular activated carbon and reliably decomposes free chlorine for a long period of time.

  The water in which the free chlorine is decomposed flows in the axial direction of the water purifier cartridge 1 and in the antibacterial ion elution part 4 in the axial direction, and silver and / or copper ions are generated from the base material carrying silver and / or copper compounds. Elutes in water. By disposing the antibacterial ion elution part 4 on the downstream side in the axial direction of the water purifier cartridge with respect to the adsorbent layer 3, the water purifier cartridge 1 can be formed into a thin and long cylindrical shape, and the antibacterial ion elution part is an activated carbon molded body. Compared to the case of being placed inside the sink, the case of being placed on the sink and the case of being placed in the storage portion under the sink is relatively unobtrusive. Moreover, the ratio of the filter medium which does not fully exhibit performance can be reduced.

  Subsequently, in the water to which silver and / or copper ions are added within a range where there is no problem in safety, iron rust, bacteria, and the like are removed by the hollow fiber membrane of the hollow fiber membrane module 5, and the purified water supply port 13 as purified water. To the water tap 51. The purified water is discharged from the discharge port 53 of the water tap 51.

When the water purifier valve 52 of the water faucet 51 is closed, the water flow is stopped, and purified water not containing free chlorine for sterilization stays between the water purifier supply port 13 of the water purifier cartridge 1 and the water tap faucet outlet 53. . Even if bacteria adhere to the discharge port 53 in this state, the growth of bacteria is suppressed by the silver ions and copper ions eluted from the antibacterial ion elution part 4.
The present invention can be modified as follows.

  (1) Although the antibacterial ion eluting member has been described as a granular material in the above-described embodiment, the antibacterial ion eluting member may be a molded body. In this case, it becomes easier to handle and easier to assemble than granular and powdery materials.

  (2) When the molded body as in (1) is used in the antibacterial ion elution part, not only the silver and / or copper compound is supported on the base material, but also the granular silver and / or copper compound is directly molded. You may carry | support with a binder. In this case, as shown in FIG. 3, the water may flow in the antibacterial ion elution member in the radial direction from the inner peripheral side to the outer peripheral side.

  (3) Further, in (2), the water flows through the antibacterial ion elution member from the inner peripheral surface toward the outer peripheral surface. However, as shown in FIG. 5, the water flows from the outer peripheral surface toward the inner peripheral surface. A road configuration may be used.

It is a longitudinal cross-sectional view of the cartridge for water purifiers which shows one embodiment of this invention. It is a schematic perspective view of the water purifier equipped with the water purifier cartridge shown in FIG. It is a longitudinal cross-sectional view of the cartridge for water purifiers which shows one embodiment of this invention. It is a longitudinal cross-sectional view of the cartridge for water purifiers concerning the other embodiment of this invention. It is a longitudinal cross-sectional view of the cartridge for water purifiers concerning the other embodiment of this invention.

Explanation of symbols

1: Water purifier cartridge 2: Housing 3: Adsorbent layer 4: Antibacterial ion elution part 5: Hollow fiber membrane module 11: Body 12: Raw water inlet 13: Purified water inlet 14: Lid 15: O-ring 16: Transparent window 17 : O-ring 21: Activated carbon molded body 22: Inner circumferential nonwoven fabric 23: Outer circumferential molded body 24: Reinforcement material 25: Upstream side cap 26: Downstream side cap 27: O-ring 31: Antibacterial ion eluting member 31A: Antibacterial ion eluting member A
31B: Antibacterial ion elution member B
32: Water passage hole 33: Mesh fiber 34: Primary filter 35: Secondary filter 36: Peripheral tube 41: Hollow fiber membrane bundle 42: Curable resin 43: Hollow fiber case 44: O ring 45: O ring 51: Water faucet 52: Water purifier valve 53: Discharge port 61: Antibacterial ion elution molding

Claims (10)

A water purifier cartridge comprising a plurality of filter media for treating tap water and a hollow fiber membrane, wherein the filter media adsorbs organic substances and heavy metals in tap water and has a function of decomposing and removing residual chlorine, It comprises an antibacterial ion eluting member that elutes metal ions having antibacterial performance, and the adsorbent layer is disposed on the upstream side of the antibacterial ion eluting member in the axial direction of the water purifier cartridge. A cartridge for water purifier, comprising a combination of at least two types of antibacterial ion elution members having different elution amounts of metal ions having performance. The water purifier cartridge according to claim 1, wherein the adsorbent layer is a molded body containing activated carbon and a heavy metal adsorbent. The cartridge for water purifiers according to claim 1, wherein the antibacterial ion elution member has a base material supporting silver and / or a copper compound. 4. The water purifier cartridge according to claim 3, wherein the silver and / or copper compound is a compound containing a base of any one of a halide, nitrate, sulfate, phosphate, sulfide, and oxide. . The cartridge for water purifiers of Claim 3 whose base material consists of at least 1 type of granular activated carbon and ceramics. At least one of the antibacterial ion eluting members (antibacterial ion eluting member A) has an elution amount of silver and / or copper ions of 5 to 50 ppb after 6 L of water flow at a water pressure of 0.05 MPa and a raw water temperature of 20 ° C. And it is less than 5 ppb after 5,000 L of water flow, and another type (antibacterial ion elution member B) is 5 ppb or less after 6 L of water flow and 5 to 50 ppb after 5,000 L of water flow, The cartridge for water purifiers in any one of Claims 1-5. The ratio of the said antibacterial ion elution member A and B shall be the ratio of weight ratio A / B = 50 / 50-80 / 20, The cartridge for water purifiers of Claim 6 characterized by the above-mentioned. 8. The water purifier cartridge according to claim 7, wherein at least two types of antibacterial ion elution members are filled in a stacked state. The water purifier cartridge according to claim 7, wherein at least two kinds of antibacterial ion elution members are filled in a mixed state. The water purifier provided with the cartridge for water purifiers in any one of Claims 1-9.

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