JP2005218947A - Cartridge filter for ion removal and manufacturing method thereof - Google Patents

Cartridge filter for ion removal and manufacturing method thereof Download PDF

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JP2005218947A
JP2005218947A JP2004028802A JP2004028802A JP2005218947A JP 2005218947 A JP2005218947 A JP 2005218947A JP 2004028802 A JP2004028802 A JP 2004028802A JP 2004028802 A JP2004028802 A JP 2004028802A JP 2005218947 A JP2005218947 A JP 2005218947A
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ion
filter
exchange resin
resin powder
binder
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Kazuo Yokoyama
一夫 横山
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cartridge filter for ion removal capable of enhancing the efficiency of ion removal by increasing the effective surface area of ion exchange resin powder thereby exhibiting an ion exchange function to the utmost. <P>SOLUTION: The cartridge filter for ion removal is provided with a pleated type filter attached to the outer periphery of a core by folding at least two sheets of support material between which filter material is interposed. Therein, the ion exchange resin powder is adhered to the filter material of the filter while partially forming micro apertures due to the contraction of the powder on the interface with the binder. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、液体の精密濾過に使用するプリーツ型濾過体を備えたカートリッジフィルタであって、さらに詳しくは液中のイオンを除去可能にしたイオン除去用カートリッジフィルタ及びその製造方法に関する。   The present invention relates to a cartridge filter provided with a pleated filter used for microfiltration of a liquid, and more particularly to an ion removal cartridge filter capable of removing ions in the liquid and a method for manufacturing the same.

一般に、液体の精密濾過には、プリーツ型濾過体を備えたカートリッジフィルタが用いられている。この種カートリッジフィルタは、上下端に液密に封着したエンドプレートを備えた外周カバー内に、円筒形のコアの外周に周着したプリーツ型濾過体を組み込んで成る。上記プリーツ型濾過体は、少なくとも二枚のサポート材間に不織布や多孔質フィルムから成るろ材を挟んで長さ方向にひだ折り加工して円筒形に丸めてコア外周に配したものである。
特開平11−99307号公報 また、液中のイオンを除去するカートリッジフィルタには、ろ材の構成繊維にイオン交換樹脂粉体をバインダーで以て固着する手段が採用されている。しかし、従来技術によるときは、イオン交換樹脂粉体がバインダーによって少なからず被覆されるため、処理液との接触面積(以下、有効表面積という)が極めて少なくなる傾向にあった。従って、イオン交換機能を十分に発揮することができず、イオン除去効率を向上することが困難であった。
In general, a cartridge filter provided with a pleated filter is used for liquid microfiltration. This type of cartridge filter is formed by incorporating a pleated filter body, which is attached to the outer periphery of a cylindrical core, in an outer cover provided with an end plate that is liquid-tightly sealed at the upper and lower ends. In the pleated filter, a filter medium made of a nonwoven fabric or a porous film is sandwiched between at least two support members, and the pleat filter body is folded in the longitudinal direction, rounded into a cylindrical shape, and arranged on the outer periphery of the core.
JP, 11-99307, A In addition, the cartridge filter which removes the ions in the liquid employs means for fixing the ion exchange resin powder to the constituent fibers of the filter medium with a binder. However, according to the prior art, since the ion exchange resin powder is not a little covered with the binder, the contact area with the treatment liquid (hereinafter referred to as effective surface area) tends to be extremely small. Therefore, the ion exchange function cannot be sufficiently exhibited, and it is difficult to improve the ion removal efficiency.

本発明は、イオン交換樹脂粉体の有効表面積を増加して、イオン交換機能を最大限に発揮可能にして、イオン除去効率を向上することを課題とする。   An object of the present invention is to increase the effective surface area of the ion exchange resin powder, to maximize the ion exchange function, and to improve the ion removal efficiency.

第1の発明であるイオン除去用カートリッジフィルタは、少なくとも二枚のサポート材間にろ材を挟んでひだ折りしてコアの外周に周着したプリーツ型濾過体を備えたカートリッジフィルタであって、上記濾過体のろ材にイオン交換樹脂粉体を、バインダーとの界面に、粉体の収縮によって形成された微小な隙間を部分的に有して固着したことを特徴とする。   The cartridge filter for ion removal according to the first aspect of the present invention is a cartridge filter including a pleated filter body that is folded around a filter medium with at least two support members sandwiched between the support members, It is characterized in that the ion exchange resin powder is fixed to the filter medium of the filter body, and is adhered to the interface with the binder partially having a minute gap formed by the shrinkage of the powder.

また、第2の発明であるイオン除去用カートリッジフィタの製造方法は、少なくとも二枚のサポート材間にろ材を挟んでひだ折りしてコアの外周に周着したプリーツ型濾過体を備えたイオン除去用カートリッジフィルタの製造方法であって、上記濾過体のろ材に、イオン交換樹脂粉体をバインダーで固着した後、当該粉体とバインダーとの界面に微小な隙間を部分的に形成するよう、活性化処理をすることを特徴とする。   In addition, a method for manufacturing an ion removal cartridge filter according to a second aspect of the present invention includes an ion removal device including a pleated filter body that is folded around a filter medium with at least two support members sandwiched between the support members and is placed around the outer periphery of the core A method for producing a cartridge filter for a filter, wherein an ion exchange resin powder is fixed to a filter medium of the filter body with a binder, and then an active portion is formed so as to partially form a minute gap at an interface between the powder and the binder. It is characterized by performing the conversion process.

この発明において、イオン交換樹脂粉体とバインダーとの界面に、当該粉体の収縮による微小な隙間を部分的に形成する点を考慮すると、イオン交換樹脂粉体を、イオン形がH形以外、好ましくはNa形である、カルボン酸形の弱酸性陽イオン交換樹脂粉体及び/又はイミノジ酢酸形のキレート樹脂粉体にし、酸処理(塩酸などの鉱酸)によりイオン形をH形にする構成が好適である。   In this invention, considering that a minute gap due to the shrinkage of the powder is partially formed at the interface between the ion exchange resin powder and the binder, the ion exchange resin powder is other than the H form, A configuration in which a carboxylic acid form weakly acidic cation exchange resin powder and / or an iminodiacetic acid form chelate resin powder, preferably in the Na form, is converted into an H form by acid treatment (mineral acid such as hydrochloric acid). Is preferred.

また、イオン交換樹脂粉体を、イオン形がOH形以外、好ましくはCO3 形又はHCO3 形である弱塩基性陰イオン交換樹脂粉体にして、アルカリ処理(水酸化ナトリウム)によりOH形にする構成にすると、純水洗浄に要する時間が大幅に短縮されるため好適である。 Further, the ion exchange resin powder is made into a weakly basic anion exchange resin powder whose ion form is other than OH form, preferably CO 3 form or HCO 3 form, and is made into OH form by alkali treatment (sodium hydroxide). This configuration is preferable because the time required for cleaning with pure water is greatly shortened.

バインダーは、イオン交換樹脂粉体を部分的に点又は線接触して固着することを勘案すると、ポリエチレン樹脂に、エポキシ基を有するグリシジルメタクリレートのエチレンコポリマー又はエチレンターポリマーを、重量比で5%〜20%添加して成る構成にするのが好適である。この構成にすると、エポキシによる架橋効果により、バインダーの化学的接着力を向上することができる。5%未満にすると化学的接着力の向上の点で効果が生じ難くなる傾向になり、20%を越えるとポリエチレンの有している耐有機溶媒性が低下する傾向になる。   In consideration of the fact that the binder is fixed in part by point or line contact with the ion exchange resin powder, the ethylene resin or ethylene terpolymer of glycidyl methacrylate having an epoxy group is added to the polyethylene resin in a weight ratio of 5% to It is preferable to add 20%. If it is set as this structure, the chemical adhesive force of a binder can be improved by the crosslinking effect by an epoxy. If it is less than 5%, the effect tends to be difficult to produce in terms of improvement in chemical adhesion, and if it exceeds 20%, the organic solvent resistance of polyethylene tends to be lowered.

本発明のイオン除去用カートリッジフィルタによるときは、イオン交換樹脂粉体とバインダーとの界面に、微小な隙間が部分的に存在するから、イオン交換樹脂粉体の有効表面積が大幅に増加する。よって、処理液がイオン交換樹脂粉体の露出している部分以外でも接触可能となり、イオン交換樹脂粉体のイオン交換機能が十分に発揮され、イオン除去効率を向上することができる。   When the cartridge filter for ion removal of the present invention is used, since the minute gap is partially present at the interface between the ion exchange resin powder and the binder, the effective surface area of the ion exchange resin powder is greatly increased. Therefore, the treatment liquid can be contacted at a portion other than the exposed portion of the ion exchange resin powder, the ion exchange function of the ion exchange resin powder is sufficiently exhibited, and the ion removal efficiency can be improved.

また、本発明のイオン除去用カートリッジフィルタの製造方法によるときは、濾過体のろ材に固着したイオン交換樹脂粉体とバインダーとの界面に、微小な隙間を部分的に形成することができる。よって、イオン交換樹脂粉体の有効表面積が増加して、イオン除去効率を向上したカートリッジフィルタを簡単に製造することができる。   In addition, according to the method for producing an ion removing cartridge filter of the present invention, a minute gap can be partially formed at the interface between the ion exchange resin powder fixed to the filter medium and the binder. Therefore, the effective surface area of the ion exchange resin powder is increased, and a cartridge filter with improved ion removal efficiency can be easily manufactured.

ところで、イオン交換樹脂は、活性化処理することにより、その対イオンの種類によって体積が変化する。例えば、弱酸性陽イオン交換樹脂の場合、Na形からH形にすると、元の体積の10%〜50%程度が収縮した状態となる。一方、粉体を固定するバインダーは体積変化しない。このため、粉体とバインダーとの界面に、微細な隙間が部分的に形成されるのである。ここで、微小な隙間が点在するとは、イオン交換樹脂粉体がバインダーと必要最小限度の接点で固着されている状態を意味し、当該粉体とバインダーとの界面の全てに隙間が存在していることを意味するものではない。   By the way, the volume of the ion exchange resin changes depending on the type of the counter ion when activated. For example, in the case of a weakly acidic cation exchange resin, when the Na form is changed to the H form, about 10% to 50% of the original volume is contracted. On the other hand, the volume of the binder that fixes the powder does not change. For this reason, fine gaps are partially formed at the interface between the powder and the binder. Here, the fact that the fine gaps are scattered means that the ion-exchange resin powder is fixed to the binder at the minimum necessary contact points, and there are gaps at all the interfaces between the powder and the binder. Does not mean that

本発明において、イオン交換樹脂粉体は、市販のイオ交換樹脂を衝撃式粉砕機、ジェットミル、ポットミルなどによりカートリッジフィルタの濾過体のろ材に均一に固着できる大きさに粉砕したものである。その大きさとしては、平均粒径が1μm〜50μm、好ましくは5μm〜30μmの範囲が好適である。   In the present invention, the ion-exchange resin powder is obtained by pulverizing a commercially available ion-exchange resin to a size that can be uniformly fixed to the filter medium of the cartridge filter by an impact pulverizer, a jet mill, a pot mill, or the like. As the size thereof, an average particle diameter of 1 μm to 50 μm, preferably 5 μm to 30 μm is suitable.

ろ材としては、イオン交換樹脂粉体を固着するバインダーが接着し得る不織布又は多孔質膜を用いることができ、具体的には、例えば、PP、PE、PTFE、PES(ポリエーテルサルホン)、セルロースアセテートなどを用いることができる。   As the filter medium, a non-woven fabric or a porous membrane to which a binder for fixing ion-exchange resin powder can be bonded can be used. Specifically, for example, PP, PE, PTFE, PES (polyethersulfone), cellulose Acetate or the like can be used.

ろ材の細孔径としては、1μm〜100μm、好ましくは3μm〜50μm、さらに好ましくは5μm〜20μmの範囲がよい。1μm未満になると、イオン交換樹脂粉体の固着による初期圧力損失が大きくなりすぎて実用上不適である。また100μmを越えると、処理液がイオン交換樹脂粉体に接触せずに流れ易くなって、イオン除去効率が低下する傾向になる。   The pore diameter of the filter medium is 1 μm to 100 μm, preferably 3 μm to 50 μm, and more preferably 5 μm to 20 μm. If it is less than 1 μm, the initial pressure loss due to the fixation of the ion exchange resin powder becomes too large, which is unsuitable for practical use. On the other hand, when the thickness exceeds 100 μm, the treatment liquid tends to flow without contacting the ion exchange resin powder, and the ion removal efficiency tends to decrease.

イオン交換樹脂粉体を固着するバインダーとしては、濾過体のろ材に接着可能なものであればよいが、熱可塑性樹脂の中でも、エチレン系樹脂(エチレン・ブテン共重合体、エチレン・ヘキセン共重合体、エチレン・アクリル酸エステル・無水マレイン酸3元共重合体、エチレン・グリシジルメタクリレートコポリマー、エチレン・グリシジルメタクリレートターポリマー)やポリプロピレン系樹脂、フッソ系樹脂、ポリエステル樹脂、スチレン系樹脂{スチレン・エチレン・ブチレン・スチレンブロック共重合体(SEBS)、スチレン・ブタジエン・スチレンブロック共重合体(SBS)、スチレン・ブタジエン・ブチレン・スチレン(SBBS)}やウレタン樹脂、シリコン樹脂(脱オキシムタイプ、脱アルコールタイプ及び付加タイプ)が好ましく、必要に応じて単独又は2種類以上を混合した状態で使用してもよい。これらのバインダーをろ材に付着加工すると、有機溶媒が蒸発する際、蒸発に伴って多数の微細孔がバインダーに形成される。よって、処理液がこれらの微細孔を通じてイオン交換樹脂と自由に接触可能となり、イオン交換反応をより一層効率的に行うことができる。   The binder for fixing the ion-exchange resin powder may be any binder that can adhere to the filter medium. Among thermoplastic resins, ethylene resins (ethylene-butene copolymer, ethylene-hexene copolymer) may be used. , Ethylene / acrylic acid ester / maleic anhydride terpolymer, ethylene / glycidyl methacrylate copolymer, ethylene / glycidyl methacrylate terpolymer), polypropylene resin, fluorine resin, polyester resin, styrene resin {styrene / ethylene / butylene・ Styrene block copolymer (SEBS), styrene / butadiene / styrene block copolymer (SBS), styrene / butadiene / butylene / styrene (SBBS)}, urethane resin, silicone resin (deoxime type, dealcohol type and addition) Thailand ) Are preferred, may be used in a state in which either individually or in combination of two or more as necessary. When these binders are attached to a filter medium and processed, when the organic solvent evaporates, a large number of micropores are formed in the binder along with the evaporation. Therefore, the treatment liquid can freely come into contact with the ion exchange resin through these fine holes, and the ion exchange reaction can be performed more efficiently.

これらの中でも特にオレフィン系樹脂系、なかでもろ材の柔軟性、耐有機溶剤性、経済性、作業性の点を考慮するとポリエチレン樹脂が好適である。   Among these, a polyethylene resin is preferable in consideration of the olefin resin system, especially the flexibility of the filter medium, organic solvent resistance, economy, and workability.

というのは、洗浄工程などに使用される極性溶媒や電子工業用原料の希釈などの有機溶媒、例えば、NMP(Nメチル2ピロリドン)、MEA(モノエタノールアミン)、ハイドロフルオロエーテル(住友スリーエム社製)、PGMEA(プロピレングリコールモノメチルエーテルアセテート)、GBL(γ−ブチロラクトン)に対して溶解や膨潤などの物理変化が殆どなく、安定した性能を発揮することができるからである。   This is because polar solvents used in washing processes and organic solvents such as dilution of raw materials for electronics industry, such as NMP (N-methyl 2-pyrrolidone), MEA (monoethanolamine), hydrofluoroether (manufactured by Sumitomo 3M) ), PGMEA (propylene glycol monomethyl ether acetate), and GBL (γ-butyrolactone) hardly exhibit physical changes such as dissolution and swelling, and can exhibit stable performance.

ところで、本発明のカートリッジフィルタは、図1に示すように、イオン交換樹脂粉体1とバインダー2との界面に、微小な隙間3が部分的に存在し、イオン交換樹脂粉体がバインダー樹脂と複数の接着箇所4のみで固着されている。   By the way, as shown in FIG. 1, the cartridge filter of the present invention has a minute gap 3 partially at the interface between the ion exchange resin powder 1 and the binder 2, and the ion exchange resin powder and the binder resin. It is fixed only at a plurality of adhesion points 4.

このため、使用条件によっては、流速による液圧などによって、イオン交換樹脂粉体が流出し易くなることも考えられる。この点を考慮すると、ポリエチレン樹脂に、エポキシ基を有するグリシジルメタクリレートのエチレンコポリマー又はエチレンターポリマーを、重量比で5%〜20%添加することにより、化学的接着力を向上するのが好ましい。   For this reason, depending on the use conditions, the ion-exchange resin powder may easily flow out due to the fluid pressure caused by the flow rate. Considering this point, it is preferable to improve the chemical adhesive force by adding 5% to 20% by weight of ethylene copolymer or ethylene terpolymer of glycidyl methacrylate having an epoxy group to the polyethylene resin.

イオン交換樹脂粉体をろ材に固着する手段としては、スプレー散布法、含浸法、コーティング法などいずれの方法でも良い。これらの方法でイオン交換樹脂粉体を固着したろ材をプリーツ状にひだ折り加工して、円筒形のコアの外周に周着して濾過体を形成し、これを外周カバー内に組み込んでカートリッジフィルタを製造することができる。   As a means for fixing the ion exchange resin powder to the filter medium, any method such as a spraying method, an impregnation method, and a coating method may be used. The filter medium to which the ion exchange resin powder is fixed by these methods is pleated into a pleat shape, and is attached to the outer periphery of a cylindrical core to form a filter body. Can be manufactured.

また、イオン交換樹脂粉体を分散したバインダー液を、予め成形したカートリッジフィルタの流入側から流出側へと吸引処理することにより、濾過体のろ材に固着することもできる。   Further, the binder liquid in which the ion-exchange resin powder is dispersed can be fixed to the filter medium by sucking the preliminarily molded cartridge filter from the inflow side to the outflow side.

以下の実施例1−5及び比較例1において、ろ材は、外周カバーの直径55mm、円筒高さ65mmのカートリッジフィルタ(ろ過精度10μm、ろ材幅6cm、ひだ幅10mm、山数75、ろ材面積900cm2 )のPP製不織布を用いた。 In Examples 1-5 and Comparative Example 1 below, the filter medium is a cartridge filter having an outer peripheral cover diameter of 55 mm and a cylinder height of 65 mm (filtration accuracy 10 μm, filter medium width 6 cm, pleat width 10 mm, number of peaks 75, filter medium area 900 cm 2. ) PP non-woven fabric.

弱酸性陽イオン交換樹脂の代表としてカルボン酸を交換基とする弱酸性陽イオン交換樹脂(イオン形Na+形)を機械式粉砕機にて粉砕し、平均粒径22μmの粉体を得た。この粉体をPP製ろ材にオレフィン系バインダーのキシレン希釈液を用いて7.0g均一に付着し、乾燥により有機溶剤を蒸発させて固着した。その後、十分な量の1N(規定)塩酸液にカートリッジを浸漬、十分に通液してH基に変換し、純水で十分に洗浄した後、乾燥を行った。   As a representative of the weak acid cation exchange resin, a weak acid cation exchange resin (ionic Na + form) having carboxylic acid as an exchange group was pulverized by a mechanical pulverizer to obtain a powder having an average particle size of 22 μm. 7.0 g of this powder was uniformly attached to a PP filter medium using a xylene-diluted solution of an olefin binder, and the organic solvent was evaporated and fixed by drying. Thereafter, the cartridge was immersed in a sufficient amount of 1N (normal) hydrochloric acid solution, sufficiently passed to convert it into H groups, thoroughly washed with pure water, and then dried.

イミノジ醋酸形キレート樹脂(イオン形NH4 +)を機械式粉砕機にて粉砕し、平均粒径18μmの粉体を得た。この粉体を実施例1と同様に、オレフィン系バインダーのキシレン希釈液を用いてPP製ろ材に7.0g均一に付着し、乾燥により有機溶剤を蒸発させて固着した。その後、十分な量の1N(規定)塩酸液にカートリッジを浸漬、十分に通液してH基に変換し、純水で十分に洗浄した後、乾燥を行った。 Iminodisuccinic acid type chelate resin (ionic form NH 4 +) was pulverized by a mechanical pulverizer to obtain a powder having an average particle diameter of 18 μm. In the same manner as in Example 1, 7.0 g of this powder was uniformly attached to a PP filter medium using a xylene-diluted solution of an olefin binder, and the organic solvent was evaporated and fixed by drying. Thereafter, the cartridge was immersed in a sufficient amount of 1N (normal) hydrochloric acid solution, sufficiently passed to convert it into H groups, thoroughly washed with pure water, and then dried.

ポリアミン中塩基性陰イオン交換樹脂(イオン形Cl−)を機械式粉砕機にて粉砕し、平均粒径20μmの粉体を得た。この粉体を実施例1と同様に、PP製ろ材にオレフィン系バインダーのキシレン希釈液を用いて7.0g均一に付着し、乾燥により有機溶剤を蒸発させて固着した。その後、十分な量の1N(規定)水酸化ナトリウム液にカートリッジを浸漬、十分に通液してOH基に変換し、純水で十分に洗浄した後、乾燥を行った。ここで、中塩基性とは、塩基性の強さが弱、中、強と分けた場合に中程度という意味である。   A basic anion exchange resin (ionic form Cl-) in polyamine was pulverized by a mechanical pulverizer to obtain a powder having an average particle diameter of 20 μm. In the same manner as in Example 1, 7.0 g of this powder was uniformly attached to a PP filter medium using a xylene-diluted solution of an olefin binder, and the organic solvent was evaporated and fixed by drying. Thereafter, the cartridge was immersed in a sufficient amount of 1N (normal) sodium hydroxide solution, sufficiently passed through to convert it into OH groups, thoroughly washed with pure water, and then dried. Here, the term “basic basic” means that the basic strength is weak, and is medium when divided into medium and strong.

ポリアミン中塩基性陰イオン交換樹脂(イオン形Cl−)を5%炭酸水素ナトリウム液に浸漬してイオン形をHCO3 −に変換した後、機械式粉砕機にて粉砕し、平均粒径20μmの粉体を得た。この粉体を実施例1と同様に、PP製ろ材にオレフィン系バインダーのキシレン希釈液を用いて7.0g均一に付着し、乾燥により有機溶剤を蒸発させて固着した。その後、十分な量の1N(規定)水酸化ナトリウム液にカートリッジを浸漬、十分に通液してOH基に変換し、純水で十分に洗浄した後、乾燥を行った。 A basic anion exchange resin (ionic form Cl-) in polyamine is immersed in a 5% sodium hydrogen carbonate solution to convert the ionic form to HCO 3- , and then pulverized by a mechanical pulverizer, with an average particle size of 20 μm. A powder was obtained. In the same manner as in Example 1, 7.0 g of this powder was uniformly attached to a PP filter medium using a xylene-diluted solution of an olefin binder, and the organic solvent was evaporated and fixed by drying. Thereafter, the cartridge was immersed in a sufficient amount of 1N (normal) sodium hydroxide solution, sufficiently passed through to convert it into OH groups, thoroughly washed with pure water, and then dried.

イミノジ形キレート樹脂(イオン形NH4 +)を機械式粉砕機にて粉砕し、平均粒径22μmの粉体を得た。この粉体を実施例1と同様に、PP製ろ材にSEBS系バインダーのキシレン希釈液を用いて7.0g均一に付着し、乾燥により有機溶剤を蒸発させて固着した。その後、十分な量の1N(規定)塩酸液にカートリッジを浸漬、十分に通液してH基に変換し、純水で十分に洗浄した後、乾燥を行った。
(比較例1)
The iminodi-type chelate resin (ionic form NH 4 +) was pulverized by a mechanical pulverizer to obtain a powder having an average particle size of 22 μm. In the same manner as in Example 1, 7.0 g of the powder was uniformly attached to a PP filter medium using a xylene-diluted solution of SEBS binder, and the organic solvent was evaporated and fixed by drying. Thereafter, the cartridge was immersed in a sufficient amount of 1N (normal) hydrochloric acid solution, sufficiently passed to convert it into H groups, thoroughly washed with pure water, and then dried.
(Comparative Example 1)

ポリアミン中塩基性陰イオン交換樹脂(イオン形Cl−)を1N(規定)水酸化ナトリウム液によりイオン形をOH形に再生し、機械式粉砕機にて粉砕し、平均粒径20μmの粉体を得た。この粉体を実施例1と同様に、PP製ろ材にオレフィン系バインダーのキシレン希釈液を用いて7.0g均一に付着し、乾燥により有機溶剤を蒸発させて固着した。   A basic anion exchange resin (ionic form Cl-) in polyamine is regenerated into an OH form with 1N (normal) sodium hydroxide solution and pulverized with a mechanical pulverizer to obtain a powder having an average particle size of 20 μm. Obtained. In the same manner as in Example 1, 7.0 g of this powder was uniformly attached to a PP filter medium using a xylene-diluted solution of an olefin binder, and the organic solvent was evaporated and fixed by drying.

実施例3、4及び比較例1で得られた陰イオン交換樹脂固着カートリッジフィルタを用いて、塩素イオン除去性能の比較試験を次の方法によって行った。   Using the anion exchange resin-fixed cartridge filters obtained in Examples 3 and 4 and Comparative Example 1, a comparative test of chlorine ion removal performance was performed by the following method.

各カートリッジフィルタをイソピルアルコールに浸した後、純水で置換し、フィルタのろ材を十分に濡らした後、0.01mol/Lの塩酸を100mol/minの割合で1Lまで通液し、100mol毎にろ過液をサンプリングした。サンプリングした液を中和滴定により、交換された塩素イオンを定量した。その結果を図2に示す。   After each cartridge filter is immersed in isopropyl alcohol, it is replaced with pure water, and the filter medium is sufficiently wetted. Then, 0.01 mol / L hydrochloric acid is passed to 1 L at a rate of 100 mol / min. The filtrate was sampled. The sampled solution was subjected to neutralization titration to quantify the exchanged chloride ions. The result is shown in FIG.

図2の結果から明らかなように、実施例は比較例に比較して、イオン除去効率が大幅に向上することが確認できた。   As is clear from the results of FIG. 2, it was confirmed that the ion removal efficiency of the example was significantly improved as compared with the comparative example.

イオン交換樹脂粉体の固着状態を示す概略模式断面図である。It is a schematic sectional drawing which shows the adhering state of ion exchange resin powder. 実施例と比較例とのイオン除去効率の比較説明図である。It is comparative explanatory drawing of the ion removal efficiency of an Example and a comparative example.

符号の説明Explanation of symbols

1 イオン交換樹脂粉体
2 バインダー
3 微小な隙間
4 イオン交換樹脂粉体とバインダーとの接着箇所
1 Ion exchange resin powder 2 Binder 3 Small gap 4 Adhesion between ion exchange resin powder and binder

Claims (5)

少なくとも二枚のサポート材間にろ材を挟んでひだ折りしてコアの外周に周着したプリーツ型濾過体を備えたカートリッジフィルタであって、上記濾過体のろ材にイオン交換樹脂粉体を、バインダーとの界面に、粉体の収縮によって形成された微小な隙間を部分的に有して固着したことを特徴とするイオン除去用カートリッジフィルタ。 A cartridge filter provided with a pleated filter body having a filter medium sandwiched between at least two support materials and folded around the core, and an ion exchange resin powder is bonded to the filter medium of the filter medium. A cartridge filter for removing ions, characterized in that it has a small gap partially formed by shrinkage of the powder, and is fixed to the interface. 少なくとも二枚のサポート材間にろ材を挟んでひだ折りしてコアの外周に周着したプリーツ型濾過体を備えたイオン除去用カートリッジフィルタの製造方法であって、上記濾過体のろ材にイオン交換樹脂粉体をバインダーで以て固着した後、当該粉体とバインダーとの界面に微小な隙間を部分的に形成するよう、活性化処理をすることを特徴とするイオン除去用カートリッジフィルタの製造方法。 A method of manufacturing a cartridge filter for ion removal comprising a pleated filter body having a filter medium sandwiched between at least two support media and folded around the outer periphery of the core, wherein the filter medium is subjected to ion exchange A method for producing a cartridge filter for ion removal, characterized in that after the resin powder is fixed with a binder, an activation treatment is performed so as to partially form a minute gap at the interface between the powder and the binder. . イオン交換樹脂粉体が、弱酸性陽イオン交換樹脂粉体及び/又はイミノジ酢酸形のキレート樹脂粉体で、かつH形以外のイオン形であり、バインダー固着後の酸処理により、イオン形をH形にする請求項2に記載のイオン除去用カートリッジフィルタの製造方法。 The ion exchange resin powder is a weakly acidic cation exchange resin powder and / or an iminodiacetic acid type chelate resin powder and an ion form other than the H form, and the ion form is converted to H by acid treatment after fixing the binder. The manufacturing method of the cartridge filter for ion removal of Claim 2 made into a shape. イオン交換樹脂粉体が、弱塩基性陰イオン交換樹脂粉体で、かつOH形以外のイオン形であり、アルカリ処理により、OH形にする請求項1に記載のイオン除去用カートリッジフィルタの製造方法。 2. The method for producing a cartridge filter for ion removal according to claim 1, wherein the ion exchange resin powder is a weakly basic anion exchange resin powder and is in an ionic form other than the OH form, and is converted into an OH form by alkali treatment. . バインダーが、ポリエチレン系樹脂であり、エポキシ基を有するグリシジルメタクリレートのエチレンコポリマー又はエチレンターポリマーを、重量比で5%〜20%添加して成る請求項2に記載のイオン除去用カーートリッジフィルタの製造方法。 The production of a cartridge filter for ion removal according to claim 2, wherein the binder is a polyethylene resin, and an ethylene copolymer or ethylene terpolymer of glycidyl methacrylate having an epoxy group is added by 5 to 20% by weight. Method.
JP2004028802A 2004-02-05 2004-02-05 Cartridge filter for ion removal and manufacturing method thereof Pending JP2005218947A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012011348A (en) * 2010-07-02 2012-01-19 Fumio Maekawa Liquid composition mainly composed of powder ion exchange resin, and powder ion exchange resin-including support
US9156001B2 (en) 2006-10-31 2015-10-13 Kurita Water Industries Ltd. Method and apparatus for further purifying ultrapure water
CN106110764A (en) * 2016-06-24 2016-11-16 马鞍山市顺达环保设备有限公司 A kind of metallurgical submerged-arc furnace cleaner unit filter course and preparation method thereof
CN108479861A (en) * 2018-05-08 2018-09-04 中国船舶重工集团公司第七0七研究所九江分部 One kind is resistance to be vibrated away from sub-exchange resin filter core

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9156001B2 (en) 2006-10-31 2015-10-13 Kurita Water Industries Ltd. Method and apparatus for further purifying ultrapure water
JP2012011348A (en) * 2010-07-02 2012-01-19 Fumio Maekawa Liquid composition mainly composed of powder ion exchange resin, and powder ion exchange resin-including support
CN106110764A (en) * 2016-06-24 2016-11-16 马鞍山市顺达环保设备有限公司 A kind of metallurgical submerged-arc furnace cleaner unit filter course and preparation method thereof
CN108479861A (en) * 2018-05-08 2018-09-04 中国船舶重工集团公司第七0七研究所九江分部 One kind is resistance to be vibrated away from sub-exchange resin filter core

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