JP3042850U - Composite filter media - Google Patents
Composite filter mediaInfo
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- JP3042850U JP3042850U JP1997003304U JP330497U JP3042850U JP 3042850 U JP3042850 U JP 3042850U JP 1997003304 U JP1997003304 U JP 1997003304U JP 330497 U JP330497 U JP 330497U JP 3042850 U JP3042850 U JP 3042850U
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- filter medium
- molded
- composite filter
- cylinder
- resin
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Abstract
(57)【要約】
【課題】 濾過と吸着除去とを同時に実施できる成形濾
過材を利用して、懸濁物を多量に含む液の濾過吸着を実
施しても、吸着容量を利用し尽くすまで目詰まりを起こ
すことがない、経済的な複合濾材を提供する。
【解決手段】 本考案の複合濾材は、粉粒状吸着剤を親
水性結合剤により結合した多孔質の成形濾過筒体と、該
成形濾過筒体の外面に沿って設けた紐巻き濾過材層と、
該成形濾過筒体を内側から支持する連続多孔性合成樹脂
製の支持筒体とからなることを特徴とする。
(57) 【Abstract】 PROBLEM TO BE SOLVED: To exhaust the adsorption capacity even if a liquid containing a large amount of suspension is filtered and adsorbed by using a molded filtration material capable of simultaneously performing filtration and adsorption removal. (EN) An economical composite filter medium that does not cause clogging. SOLUTION: The composite filter medium of the present invention comprises a porous molded filter cylinder in which a particulate adsorbent is bound by a hydrophilic binder, and a cord-wound filter medium layer provided along the outer surface of the molded filter cylinder. ,
It is characterized by comprising a support cylinder made of a continuous porous synthetic resin that supports the molded filtration cylinder from the inside.
Description
【０００１】[0001]
本考案は、水や水溶液などを精製するにあたって、水等の中に懸濁している成 分と同時に溶解している成分を除去するために用いられるカートリッジ型の複合 濾材に関する。 The present invention relates to a cartridge-type composite filter medium used for purifying water, an aqueous solution, or the like, and removing components that are suspended in water and dissolved at the same time.
【０００２】[0002]
近来、用水の使用量が多くなるにつれて水質の低下の問題が取り上げられるよ うになっており、浄水器等を用いて水を濾過すると共に微量の不純物を吸着除去 することが行われている。また工業用においても高純度の洗浄水などが必要とさ れる場合や、排水を循環して再使用する場合など、或いは浴場などで浴槽内の温 水の循環精製が必要な場合が多くなってきている。このような水精製に用いられ る装置における吸着剤は、取扱の便のために、筒状のケースや袋などの容器の中 に粒状とした活性炭やゼオライトなどの吸着剤を充填したカートリッジ型として 利用することが普通であった。 Recently, the problem of water quality deterioration has been taken up as the amount of water used has increased, and it has been practiced to filter water using a water purifier and to adsorb and remove trace impurities. Also in industrial use, there are many cases where high-purity wash water is required, when wastewater is circulated and reused, or when hot water in a bathtub needs to be circulated and purified. ing. For the convenience of handling, the adsorbent used in such equipment for water purification is a cartridge type in which a granular adsorbent such as activated carbon or zeolite is filled in a container such as a cylindrical case or bag. It was common to use.
【０００３】 ところがこのような充填カートリッジ型の吸着ユニットは吸着剤の充填密度が 不均一となり易く、濾過に際してチャンネリングを起こして吸着能力を充分に発 揮しないことが多いばかりでなく、使用中に吸着剤の崩壊によって流出する微粉 末によって精製水が汚染されるという事故が発生し易い。そこでこのような欠点 を解消するために、繊維状活性炭を用いて形成した不織布を、多孔質の筒状支持 体の周りに巻き付けた吸着ユニットなども提案されているが、空隙や吸着力が均 一でばらつきが少ないという利点があるものの、嵩高であって体積当たりの吸着 容量が小さく、しかも製造コストが高いという欠点がある。However, in such a filling cartridge type adsorption unit, the packing density of the adsorbent is apt to be non-uniform, and the adsorption capacity is often not sufficiently generated due to channeling during filtration. Accidents tend to occur in which purified water is contaminated by fine powder that flows out when the adsorbent collapses. Therefore, in order to eliminate such drawbacks, an adsorption unit in which a non-woven fabric formed by using fibrous activated carbon is wound around a porous cylindrical support has been proposed, but voids and adsorption force are even. However, it has the disadvantage of being bulky, having a small adsorption capacity per volume, and having a high manufacturing cost.
【０００４】 そしてまた、吸着剤粒子と熱溶融性繊維とを混合し熱圧成形して筒状の多孔性 吸着材とし、その内外面を吸着性繊維層と濾布とで被覆した濾過材が提案されて いる（実開昭６０−９１２１６）。しかしこのような多孔性吸着材は、構造が複 雑であるばかりでなく空隙率の制御が容易でなく、そのうえ特殊な材料を使用す るので製造コストも高いという欠点がある。In addition, a filter medium in which adsorbent particles and heat-meltable fibers are mixed and hot-pressed to form a cylindrical porous adsorbent, the inner and outer surfaces of which are covered with an adsorbent fiber layer and a filter cloth is used. It has been proposed (Shokaisho 60-91216). However, such a porous adsorbent not only has a complicated structure, but it is not easy to control the porosity, and in addition, since a special material is used, the manufacturing cost is high.
【０００５】 このような従来技術の欠点を改良して、濾過と不純物の吸着除去とを同時に実 施できるばかりでなく、破壊強度が大きく、空隙が均一でしかも濾過抵抗が小さ く、そのうえ吸着容量が大きい成形濾過材を安価に製造する方法が提案されてお り（特公平７−２２０３号）、かかる方法によって製造された成形濾過材を用い て、懸濁物を含む液を処理するときでも目詰まりを起こし難く、吸着容量に見合 った不純物の吸着除去ができる吸着濾材も提案されている（特開平８−２９４６ ０９号）。Not only can the filtration and the adsorption and removal of impurities be carried out at the same time by improving the above-mentioned drawbacks of the prior art, but also the fracture strength is large, the voids are uniform and the filtration resistance is small, and the adsorption capacity is A method for inexpensively producing a molded filter medium having a large size has been proposed (Japanese Patent Publication No. 7-2203), and even when treating a liquid containing a suspension using the molded filter medium manufactured by such a method. There is also proposed an adsorption filter medium which is unlikely to cause clogging and which can adsorb and remove impurities commensurate with the adsorption capacity (JP-A-8-294609).
【０００６】[0006]
ところが、前記の成形濾過材でも、懸濁物を多量に含む液の処理に用いようと すると、目詰まりを避けることができず、吸着容量と濾過容量とのバランスを取 るためには、前置濾過装置などが必要となる場合があった。 そこで本考案は、かかる濾過と吸着除去とを同時に行うことができる成形濾過 材を利用して、懸濁物を多量に含む液の濾過吸着を実施しても、吸着容量を利用 し尽くすまで目詰まりを起こすことがない、経済的な複合濾材を提供することを 目的とした。 However, even if the above-mentioned molded filter material is used for treating a liquid containing a large amount of suspension, clogging cannot be avoided, and in order to balance the adsorption capacity and the filtration capacity, In some cases, a stationary filtration device was required. In view of this, the present invention utilizes a molded filter material capable of simultaneously performing such filtration and adsorption removal, and even if the filtration and adsorption of a liquid containing a large amount of suspension is carried out, the adsorption capacity is exhausted. The object is to provide an economical composite filter medium that does not cause clogging.
【０００７】[0007]
上記の本考案の目的は、粉粒状吸着剤を親水性結合剤により結合した多孔質の 成形濾過筒体と、該成形濾過筒体の外面に沿って設けた紐巻き濾過材層と、該成 形濾過筒体を内側から支持する連続多孔性合成樹脂製の支持筒体とからなること を特徴とする複合濾材によって達成することができる。 The above-mentioned object of the present invention is to provide a porous molded filtration cylinder in which a particulate adsorbent is bound by a hydrophilic binder, a cord-wound filter material layer provided along the outer surface of the molded filtration cylinder, and It can be achieved by a composite filter medium comprising a support cylinder made of a continuous porous synthetic resin that supports the shape filtration cylinder from the inside.
【０００８】[0008]
本考案において用いられる粉粒状吸着剤としては、例えば活性炭、ゼオライト 、シリカゲル、麦飯石、イオン交換樹脂、活性白土、ケイソウ土などから１種又 はそれ以上、適宜のものを選択して用いることができる。かかる粉粒状吸着剤の 粒度は例えば０．０５〜５mmなどの範囲などであってよく、また繊維状の吸着材 などが混合されていてもよい。粉粒状吸着剤の粒径分布は、成形体に所望の空隙 率を与えるために適宜調整することが好ましい。 As the particulate adsorbent used in the present invention, for example, one or more kinds selected from activated carbon, zeolite, silica gel, barley stone, ion exchange resin, activated clay, diatomaceous earth, etc. may be appropriately selected and used. it can. The particle size of such a particulate adsorbent may be, for example, in the range of 0.05 to 5 mm, and may be mixed with a fibrous adsorbent. The particle size distribution of the particulate adsorbent is preferably adjusted as appropriate in order to give the molded body a desired porosity.
【０００９】 また本考案においては、上記のような粉粒状吸着剤を親水性結合剤により結合 して得た多孔質の成形濾過筒体を用いるが、かかる親水性結合剤としては、常温 で被膜形成能力を有する合成樹脂の水性エマルジョンであって乾燥したときに強 靱な連続被膜が形成されるものと、水溶性高分子結合剤とを併用することが好ま しい。かかる合成樹脂としては、例えばアクリル系、ビニル系、ブタジエン系、 スチレン系、オレフィン系等のモノマーを重合して得られた熱可塑性合成樹脂が 利用でき、中でもアクリル系合成樹脂が好ましく用いられる。また水溶性高分子 結合剤としては、例えばカルボキシメチルセルロース、ヒドロキシエチルセルロ ース、メチルセルロース等のセルロース誘導体、ポリビニルアルコール、ポリア クリル酸塩などを用いることができるが、中でも好ましく用いられるのはセルロ ース系誘導体である。Further, in the present invention, a porous molded filtration cylinder obtained by binding the above-mentioned powdery and particulate adsorbent with a hydrophilic binder is used, and such a hydrophilic binder is a film at room temperature. It is preferable to use an aqueous emulsion of a synthetic resin capable of forming, which forms a tough continuous film when dried, together with a water-soluble polymer binder. As such a synthetic resin, for example, a thermoplastic synthetic resin obtained by polymerizing monomers of acrylic type, vinyl type, butadiene type, styrene type, olefin type, etc. can be used, and among them, acrylic type synthetic resin is preferably used. As the water-soluble polymer binder, for example, cellulose derivatives such as carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, polyvinyl alcohol, polyacrylic acid salts and the like can be used, and among them, cellulose is preferably used. It is a system derivative.
【００１０】 上記のような粉粒状吸着剤は水に溶解し又希釈した結合剤と混合して湿潤した 可塑性組成物とし、更に複数部材から組み立てた成形型内に充填し、適宜の方法 によって加圧して成形体としたのち型から取り出し、又は型の一部を取り外した 状態で成形体が形状保持強度を持つに到るまで常温、或いは加温下に保持して水 分を蒸発させ、更に充分に乾燥熱処理して結合剤を硬化させるなどの方法で親水 性の多孔質成形濾過体とする。かかる成形濾過体は筒形の形状を備えているもの であるが、その寸法は所望により適宜に選択することができる。The above-mentioned powdery and granular adsorbent is dissolved in water and mixed with a diluted binder to obtain a wet plastic composition, which is further filled in a mold assembled from a plurality of members and added by an appropriate method. After pressing to form a molded body, it is taken out from the mold, or with a part of the mold removed, it is kept at room temperature or under heating until the molded body has a shape-retaining strength to evaporate water. A hydrophilic porous molded filter is prepared by a method such as sufficient dry heat treatment to cure the binder. Such a molded filter has a cylindrical shape, and its size can be appropriately selected as desired.
【００１１】 こうして得られた成形濾過筒体の外面に沿って設けられる紐巻き濾過材層とし ては、ポリオレフィン樹脂、ポリエステル樹脂、ポリアミド樹脂等から得られた 繊維などを用いて形成された糸、又は紐を巻き付けて得られる公知の構造の濾過 材層が好ましく用いられる。かかる濾過材層を構成する素材である繊維は、０． １〜３０デニール程度の繊度を有しているものであることが好ましい。The cord-wound filter material layer provided along the outer surface of the molded filtration cylinder thus obtained is a thread formed by using a fiber obtained from a polyolefin resin, a polyester resin, a polyamide resin, or the like, Alternatively, a filter material layer having a known structure obtained by winding a string is preferably used. The fibers that are the material constituting the filter material layer are It is preferable to have a fineness of about 1 to 30 denier.
【００１２】 また、かかる成形濾過筒体を内側から支持する連続多孔性合成樹脂製の支持筒 体は、ポリオレフィン系樹脂、塩化ビニル系樹脂、ポリアミド樹脂等の熱可塑性 樹脂か、或いはポリウレタン樹脂等の熱硬化性樹脂から形成されたものであるこ とが好ましく、通液抵抗が少なく且つ弾性があって機械的強度の高いものから選 択されることが望ましい。かかる連続多孔性の支持筒体としては、例えば熱可塑 性樹脂を溶融紡糸すると同時に堆積しかつ相互に融着して得た３次元網状体や、 多量の水溶性粒子を配合した熱可塑性樹脂を成形したのち水抽出により連続空隙 を形成した多孔体、或いは発泡剤の存在下で発泡成形した熱硬化性樹脂多孔体な どが好ましく利用できる。Further, the support cylinder made of a continuous porous synthetic resin that supports the molded filtration cylinder from the inside is made of a thermoplastic resin such as a polyolefin resin, a vinyl chloride resin, a polyamide resin, or a polyurethane resin. It is preferable that it is formed of a thermosetting resin, and it is desirable that it is selected from those having low liquid resistance, elasticity, and high mechanical strength. Examples of such a continuous porous support cylinder include a three-dimensional network obtained by melt-spinning a thermoplastic resin and simultaneously depositing and fusing each other, or a thermoplastic resin containing a large amount of water-soluble particles. A porous body having continuous voids formed by molding and then water extraction, or a thermosetting resin porous body foam-molded in the presence of a foaming agent can be preferably used.
【００１３】[0013]
６０〜２００メッシュの乾燥ヤシ殻活性炭２３０ｇを、アクリル系樹脂エマル ジョン（商品名エクセルタック、セメダイン製、固形分７０重量％）とカルボキ シメチルセルロースナトリウム塩（商品名キッコレート、ニチリン化学製）とを 水に均一に溶解させた混合液を結合剤として、型に充填して成形し、更に乾燥し て、内径３４mm、外径６０mm、長さ約２５０mmの筒状で、嵩密度が０．４８ｇ／ cm3 である多孔質の成形濾過筒体Ａを得た。230 g of dry coconut shell activated carbon of 60-200 mesh is mixed with acrylic resin emulsion (trade name Excelselc, made by Cemedine, solid content 70% by weight) and sodium carboxymethyl cellulose sodium salt (trade name Kikkolate, made by Nichirin Chemical). Using a mixed solution that was uniformly dissolved in a mold as a binder, it was filled into a mold, molded, and dried to form a cylinder with an inner diameter of 34 mm, an outer diameter of 60 mm, and a length of about 250 mm, and a bulk density of 0.48 g / cm 3. A porous molded filtration cylinder A having a size of 3 was obtained.
【００１４】 こうして得た成形濾過筒体Ａの周面に、ポリプロピレンからなる４デニールの 単繊維と同じく６デニールの単繊維を、各５０％ずつ混合して紡糸した径０．８ 〜１．０mmの糸を、厚さ約７mmとなるように螺旋状に巻き付けて、紐巻き濾過材 層Ｂを形成した。 そして更に、ポリプロピレンの溶融押出糸を堆積融着して得た、外径３５mm、 内径２０mmの筒状３次元網状体を、支持筒体Ｃとして成形濾過筒体Ａの内側空間 内に挿入して、図１に示すような構造を有する本考案の複合濾材を作成した。On the peripheral surface of the thus-obtained molded filtration cylinder A, 4 denier monofilament made of polypropylene and 6 denier monofilament were mixed 50% each and spun to a diameter of 0.8 to 1.0 mm. The thread was wound spirally so as to have a thickness of about 7 mm to form a cord-wound filter material layer B. Further, a tubular three-dimensional net body having an outer diameter of 35 mm and an inner diameter of 20 mm obtained by depositing and fusing polypropylene melt extruded yarn is inserted as a support tubular body C into the inner space of the molded filtration tubular body A. A composite filter medium of the present invention having a structure as shown in FIG. 1 was prepared.
【００１５】 この複合濾材と成形濾過筒体Ａとを、それぞれ別な試験用濾筒懸垂型濾過機に 取り付け、水道水を外側から内側に向かって１０００ l／hrの速度で通液して、 圧力損失を測定したところ、いずれも０．０５ kgf／cm2 と全く同等の値を示し た。 次にこれらの試験用濾過機を用いて、１３〜２２mg/lの水酸化第二鉄を懸濁し 且つ２０mg/Lのヨウ素を含む１６℃の水道水を、６００ l／hrの速度で通液し、 濾過と吸着によって水を精製する試験を行った。そして、濾過運転日数の経過に つれて圧力損失が増大し、０．８ kgf／cm2 に達して濾材の寿命が尽きるまでに 捕集された懸濁物の量と、そのときの濾材の残存吸着容量とを調べ、その結果を 表１に示した。但し、捕集懸濁物量は濾材１個当たりの平均重量（ｇ）で、また 残存吸着容量は濾材１個当たりの平均ヨウ素吸着量の初期値に対する比（％）で 表示した。 この結果を見ると、本考案の複合濾材は優れた濾過寿命と吸着能力とを有する ことがわかる。The composite filter material and the molded filter cylinder A were attached to different test filter suspension filters, and tap water was passed from the outside to the inside at a rate of 1000 l / hr, When the pressure loss was measured, they all showed a value equal to 0.05 kgf / cm 2 . Then, using these test filters, tap water at 16 ° C in which 13 to 22 mg / l ferric hydroxide was suspended and which contained 20 mg / L iodine was passed at a rate of 600 l / hr. Then, a test was conducted to purify water by filtration and adsorption. Then, the pressure loss increased as the number of days of filtration operation increased, reaching 0.8 kgf / cm 2 and the amount of suspended solids collected until the life of the filter medium expired, and the remaining amount of filter medium at that time. The adsorption capacity was examined and the results are shown in Table 1. However, the amount of collected suspension was represented by the average weight (g) per filter medium, and the residual adsorption capacity was represented by the ratio (%) of the average iodine adsorption amount per filter medium to the initial value. From these results, it can be seen that the composite filter medium of the present invention has excellent filtration life and adsorption capacity.
【００１６】[0016]
【表１】 ┌────────┬──────┬──────┐ │濾材 │捕集懸濁物量│残存吸着容量│ ├────────┼──────┼──────┤ │本考案の複合濾材│ １０．０ｇ│ ２８％ │ │成形濾過筒体Ａ │ ３．５ｇ│ ７５％ │ └────────┴──────┴──────┘[Table 1] ┌────────┬──────┬──────┐ │ Filter media │ Collection suspension amount │ Residual adsorption capacity │ ├───────── ┼──────┼──────┤ │ Composite filter media of the present invention │ 10.0 g │ 28% │ │ Molded filter cylinder A │ 3.5 g │ 75% │ └ ────── ──┴──────┴──────┘
【００１７】[0017]
本考案の複合濾材は、原水中の懸濁物の量が多くても目詰まりを起こし難いう え、表面の紐巻き濾過材層上に捕捉された懸濁物は機械的な処理により容易に除 去できるので、濾材自体の使用寿命が長く、また吸着容量を残して濾過寿命が尽 きるという心配がないから、極めて経済的であるという優れた効果を有する。 The composite filter medium of the present invention is unlikely to cause clogging even if the amount of suspended solids in the raw water is large, and the suspended solids trapped on the string-wound filter medium layer on the surface can be easily treated by mechanical treatment. Since it can be removed, the filter medium itself has a long service life, and since there is no concern that the filtration life will be exhausted by leaving the adsorption capacity, it has an excellent effect of being extremely economical.
【図１】本考案の複合濾材の構造を示す断面図である。FIG. 1 is a cross-sectional view showing the structure of a composite filter medium of the present invention.
Ａ 成形濾過筒体 Ｂ 紐巻き濾過材層 Ｃ 支持筒体 A Molded filter cylinder B String filter material layer C Support cylinder
Claims (4)
した多孔質の成形濾過筒体と、該成形濾過筒体の外面に
沿って設けた紐巻き濾過材層と、該成形濾過筒体を内側
から支持する連続多孔性合成樹脂製の支持筒体とからな
ることを特徴とする複合濾材。1. A porous molded filtration cylinder in which a particulate adsorbent is bound by a hydrophilic binder, a cord-wound filter material layer provided along the outer surface of the molded filtration cylinder, and the molded filtration cylinder. A composite filter medium comprising a support cylindrical body made of a continuous porous synthetic resin that supports the above from inside.
イト、シリカゲル、麦飯石、又はこれらの少なくも１種
を含む混合物である請求項１に記載の複合濾材。2. The composite filter medium according to claim 1, wherein the particulate adsorbent is granular granular activated carbon, zeolite, silica gel, barley stone, or a mixture containing at least one of them.
の繊維から形成された糸又は紐で構成されたものである
請求項１又は２に記載の複合濾材。3. The composite filter medium according to claim 1, wherein the cord-wound filter medium layer is composed of a thread or a cord formed of 0.1 to 30 denier fibers.
化ビニル系樹脂等の熱可塑性樹脂、又はポリウレタン樹
脂等の熱硬化性樹脂から形成されたものである請求項１
ないし３のいずれかに記載の複合濾材。4. The support cylinder is formed of a thermoplastic resin such as a polyolefin resin or a vinyl chloride resin, or a thermosetting resin such as a polyurethane resin.
4. The composite filter medium according to any one of 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1997003304U JP3042850U (en) | 1997-04-25 | 1997-04-25 | Composite filter media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1997003304U JP3042850U (en) | 1997-04-25 | 1997-04-25 | Composite filter media |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3042850U true JP3042850U (en) | 1997-11-04 |
Family
ID=43177321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1997003304U Expired - Lifetime JP3042850U (en) | 1997-04-25 | 1997-04-25 | Composite filter media |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3042850U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011016548A1 (en) * | 2009-08-06 | 2011-02-10 | クラレケミカル株式会社 | Molded activated charcoal and water purifier involving same |
-
1997
- 1997-04-25 JP JP1997003304U patent/JP3042850U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011016548A1 (en) * | 2009-08-06 | 2011-02-10 | クラレケミカル株式会社 | Molded activated charcoal and water purifier involving same |
| CN102471096A (en) * | 2009-08-06 | 2012-05-23 | 可乐丽化学株式会社 | Molded activated charcoal and water purifier involving same |
| JPWO2011016548A1 (en) * | 2009-08-06 | 2013-01-17 | クラレケミカル株式会社 | Activated carbon molded body and water purifier using the same |
| CN102471096B (en) * | 2009-08-06 | 2014-09-24 | 可乐丽化学株式会社 | Molded activated charcoal and water purifier involving same |
| US9033158B2 (en) | 2009-08-06 | 2015-05-19 | Kuraray Chemical Co., Ltd. | Molded activated charcoal and water purifier involving same |
| TWI485107B (en) * | 2009-08-06 | 2015-05-21 | Kuraray Chemical Kk | Activated carbon molded product and water purifier using the same |
| JP2017136589A (en) * | 2009-08-06 | 2017-08-10 | 株式会社クラレ | Active carbon and water purifier using the same |
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