JPS60232288A - Sterilization material for water treatment - Google Patents

Sterilization material for water treatment

Info

Publication number
JPS60232288A
JPS60232288A JP59086181A JP8618184A JPS60232288A JP S60232288 A JPS60232288 A JP S60232288A JP 59086181 A JP59086181 A JP 59086181A JP 8618184 A JP8618184 A JP 8618184A JP S60232288 A JPS60232288 A JP S60232288A
Authority
JP
Japan
Prior art keywords
iodine
sterilization
particulate material
faucet
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP59086181A
Other languages
Japanese (ja)
Inventor
Ikuo Igami
伊神 生雄
Michio Inoue
井上 通生
Hisao Tanaka
久雄 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP59086181A priority Critical patent/JPS60232288A/en
Publication of JPS60232288A publication Critical patent/JPS60232288A/en
Pending legal-status Critical Current

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  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

PURPOSE:To enable inexpensive sterilization over a long period of time, by using a material, which is obtained by adsorbing iodine with an ABS resin particulate material, as the sterilization material for preventing the counter contamination of a precise filter apparatus. CONSTITUTION:An ABS resin to be used is pref. a soft one especially much in an acrylonitrile component and formed into a particulate material with a volume of 0.01-2.0cm<3> such as a spherical, rotary oval or columnar shape. In order to adsorb iodine by said particulate material, for example, the particulate material of a polymer is received in a desiccator having iodine placed on the bottom part thereof and allowed to stand for about a day - a week at a room temp. Whereupon, sublimed iodine vapor is properly adsorbed by the surface of the particulate material to form a sterilization material. The adsorbing amount of iodine is set to 1 or more wt% of the particlulate material.

Description

【発明の詳細な説明】 [技術分野] 本発明は、水処理用の殺菌材、特に精密濾過装置の逆汚
染防止用として好適な、殺菌剤の徐放性に優れた粒状の
殺菌材に関する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a sterilizing material for water treatment, particularly to a granular sterilizing material with excellent sustained release properties of a sterilizing agent, which is suitable for preventing back contamination of microfiltration equipment.

[従来技術] 従来、水の殺菌方法としては、代表的には煮沸殺菌法、
紫外線殺菌法、薬剤殺菌法等が知られているが、例えば
煮清殺菌法では殺菌効果は充分であるが、エネルギーコ
ストが高くつくという欠点がある。また、紫外線殺菌法
では、紫外線ランプの使用初期にはほぼ満足できる殺菌
効果が得られるものの、長期間にわたって使用すると、
紫外線ランプ自体の劣化や紫外線ランプの表面に水垢が
付着する等の理由から、長期間の使用後には殺菌効果が
大幅に低下するという欠点がある。更に、薬剤殺菌法に
用いる代表的な殺菌剤としては、塩素、オゾン等が知ら
れている。これらの薬剤殺菌法に用いる殺菌剤は、比較
的簡易に殺菌が可能であるという利点を有するものの、
反面、殺菌効果の持続性の点で、例えば短時間の曝気や
加温等により殺菌剤が揮散し殺菌効果が消失するという
欠点がある。
[Prior Art] Traditionally, typical water sterilization methods include boiling sterilization,
Ultraviolet sterilization methods, chemical sterilization methods, and the like are known; for example, the boiling sterilization method has a sufficient sterilization effect, but has the drawback of high energy costs. In addition, with the ultraviolet sterilization method, although an almost satisfactory sterilization effect can be obtained in the initial use of the ultraviolet lamp, if used for a long period of time,
The drawback is that the sterilizing effect decreases significantly after long-term use due to the deterioration of the UV lamp itself and the buildup of limescale on the surface of the UV lamp. Furthermore, chlorine, ozone, and the like are known as typical sterilizing agents used in chemical sterilization methods. Although the disinfectants used in these chemical sterilization methods have the advantage of being relatively easy to sterilize,
On the other hand, in terms of sustainability of the bactericidal effect, there is a drawback that the bactericidal agent evaporates due to short-term aeration, heating, etc., and the bactericidal effect disappears.

一方、最近、無菌化処理装置として、細菌類やパイロジ
エンを透過しない中空糸濾過膜を利用した超精密濾過装
置が開発されつつある。このような装置によれば、極め
て高度の無菌水を比較的低コストで簡易に得ることが可
能である。高純度の無菌水は、病院等の医療分野で必要
とされることが多いが、例えば病院内では、手術室、洗
浄室、薬剤室等各種の部所で高度の無菌水が必要とされ
る。このように無菌水が複数の部所で必要とされる場合
には、濾過装置停止時の逆汚染(給水口からの細菌の侵
入)を防止する上からは、ユースポイントの直前でコン
パクトな無菌化処理装置を使用して処理するのが好まし
い。しかしながら、ユースポイント直前で濾過を実施し
たとしても、依然として濾過装置の浄化水出口(蛇口)
からの逆汚染の可能性があるため、この逆汚染を防止す
ることは非常に重要な問題である。
On the other hand, recently, as a sterilization treatment device, an ultra-precise filtration device using a hollow fiber filtration membrane that is impermeable to bacteria and pyrogens is being developed. According to such a device, extremely highly sterile water can be easily obtained at relatively low cost. Highly purified sterile water is often required in medical fields such as hospitals, but for example, highly sterile water is required in various areas within hospitals such as operating rooms, cleaning rooms, drug rooms, etc. . When sterile water is needed in multiple locations, it is recommended to install a compact sterile water tank immediately before the point of use to prevent back contamination (bacterial intrusion from the water supply port) when the filtration device is stopped. Preferably, the treatment is carried out using a chemical treatment device. However, even if filtration is performed just before the point of use, the purified water outlet (faucet) of the filtration device still
Preventing this back contamination is a very important issue because of the possibility of back contamination from

逆汚染を防止する方策として、一つには、蛇口に対して
無菌エアーを供給し、用水の不使用時には常時このエア
ーを流すことにより蛇口からの細菌の侵入を防止する方
法が知られている。しかし、この方法による場合には、
無菌エアーを流すための圧縮ポンプを常時作動させてお
く必要があると同時に、各濾過装置に至る無菌エアー供
給用の配管を配設する必要があり、コスト的に問題があ
った。
One known method to prevent back contamination is to supply sterile air to the faucet and keep this air flowing whenever the water is not in use, thereby preventing bacteria from entering from the faucet. . However, with this method,
It is necessary to constantly operate a compression pump for flowing sterile air, and at the same time, it is necessary to provide piping for supplying sterile air to each filtration device, which poses a problem in terms of cost.

一方、蛇口内に殺菌剤を加えることも一法ではあるが、
一般的には殺菌剤は、効果の持続性に乏しい。また、用
水の不使用時にのみ蛇口内に殺菌剤を供給するようにす
るには蛇口の構造が複雑となるし、紫外線ランプ等の殺
菌装置を蛇口に組み込むことについても同様な問題があ
る。更に、例えば濾過装置の蛇口に対して徐放性に優れ
たヨード等の殺菌材を吸着させたものを使用す、ること
も考えられるが、このようなものの場合には、ヨードの
着色による美観が損なわれる問題に加え、その殺菌性能
が低下した場合には蛇口を交換しなければならないとい
う問題点があり、十分な解決策とはならなかった。
On the other hand, adding disinfectant to the faucet is one method, but
Generally, disinfectants have poor long-lasting effects. Further, the structure of the faucet becomes complicated if the disinfectant is supplied into the faucet only when the water is not in use, and similar problems arise when a sterilizing device such as an ultraviolet lamp is incorporated into the faucet. Furthermore, for example, it is possible to use a faucet of a filtration device that has a sterilizing agent such as iodine adsorbed with excellent sustained release properties, but in such a case, the aesthetic appearance due to the coloring of iodine may be reduced. In addition to the problem of loss of sterilization performance, there was also the problem that the faucet had to be replaced if its sterilization performance deteriorated, so it was not a sufficient solution.

[発明の目的] 本発明者等は、これら問題点に鑑み、精密濾過装置に於
ける逆汚染防止法につき鋭意検討を実施した結果、本発
明を完成するに至った。
[Object of the Invention] In view of these problems, the present inventors conducted intensive studies on a method for preventing back contamination in a precision filtration device, and as a result, completed the present invention.

本発明の目的は、精密濾過装置の蛇口からの逆汚染を防
止するために、蛇口内に収納して使用するのに適した、
殺菌剤の徐放性に優れた殺菌材を提供することにある。
An object of the present invention is to provide a microfiltration device suitable for use by being stored in a faucet in order to prevent back contamination from the faucet.
An object of the present invention is to provide a sterilizing material that exhibits excellent sustained release of sterilizing agents.

[発明の構成] すなわち、本発明の殺菌材は、ABS樹脂の粒状物にヨ
ードを吸着させて構成される。
[Configuration of the Invention] That is, the sterilizing material of the present invention is constructed by adsorbing iodine to granules of ABS resin.

[発明の実施するための好適な態様] 本発明にいう、ABS樹脂とは、アクリロニトリル、ブ
タジェン、スチレンの三種の単量体を構成主成分とする
共重合体樹脂であり、より詳細には、ブタジェン系ゴム
の存在下にアクリロニトリル、スチレンモノマーをグラ
フト重合したグラフト共重合体およびこの共重合体をア
クリロニトリル−スチレン共重合体とポリマーブレンド
したものが代表的には挙げられるが、これらのいづれの
タイプのものでもよい。しかし、ヨードの吸着量を増加
させるためには、アクリロニトリル成分が多く、かつ比
較的軟質のABS樹脂が好ましい。
[Preferred embodiments for carrying out the invention] The ABS resin referred to in the present invention is a copolymer resin whose main constituent components are three types of monomers: acrylonitrile, butadiene, and styrene, and more specifically, Typical examples include a graft copolymer obtained by graft polymerizing acrylonitrile and styrene monomers in the presence of butadiene rubber, and a polymer blend of this copolymer with an acrylonitrile-styrene copolymer. It may also be from. However, in order to increase the amount of iodine adsorbed, ABS resin that has a large acrylonitrile component and is relatively soft is preferable.

本発明にいう粒状物とは、球、回転楕円体、円柱、多角
柱等の形状のものを意味し、例えば球の場合には直径が
3〜15mm程度のもの、円柱(ペレット)の場合には
直径が2〜10mm程度で長さが3〜20mm程度のも
の、すなわちその体積として0.01〜2.0C113
程度の粒状物が好適に使用できる。上記粒状物は、前記
重合体を例えば押し出し法等公知の成形方法により形成
される。
The term "granular material" as used in the present invention means a material having a shape such as a sphere, a spheroid, a cylinder, or a polygonal prism. has a diameter of about 2 to 10 mm and a length of about 3 to 20 mm, that is, its volume is 0.01 to 2.0C113
A granular material of about 100% can be suitably used. The granules are formed by molding the polymer by a known method such as extrusion.

このような重合体の粒状物上にヨードを吸着させ、本発
明の殺菌材を製造するには種々の方法が採用できる。最
も簡単な方法としては、ヨードを底部に載置したデシケ
ータ−中に重合体の粒状物を収納し、室温で一日乃至一
週間程度放置しておくと、昇化したヨード蒸気が粒状物
の表面に適度に吸着され、殺菌材が形成される。
Various methods can be employed to produce the germicidal material of the present invention by adsorbing iodine onto such polymer particles. The simplest method is to store polymer particles in a desiccator with iodine placed on the bottom and leave it at room temperature for about a day to a week. It is properly adsorbed to the surface and a bactericidal material is formed.

ヨードの吸着量は、粒状物に対して、1重量%以上であ
ることが好ましく、3重量%以上であることがより好ま
しい。
The amount of iodine adsorbed is preferably 1% by weight or more, more preferably 3% by weight or more, based on the granular material.

本発明の粒状の殺菌材は、殺菌剤(ヨード)の徐放性に
優れている。したがって、例えば精密濾過装置での濾過
用水の最終出口である小さな開口を多数有する蛇口キャ
ップ内に収納して使用するのに好適である。前記重合体
に吸着されたヨードは、蛇口キャップ内でゆっくりと濾
過用水中に放出されるため、逆汚染の生ずる可能性のあ
る濾過装置の停止時には、蛇口キャップ内の滞留水のヨ
ードの濃度は徐々に高くなり、十分な殺菌力を有するよ
うになる。したがって、蛇口に接触する空気から蛇口内
への細菌類の侵入(逆汚染)が阻止される。濾過装置の
長期停止時に蛇口内に滞留していたヨード濃度の高くな
った濾過水は飲料水としてはあまり適当なものではない
が、蛇口内に滞留していた量の濾過水を放流すれば、濾
過水中のヨード濃度は即座にその検出限界以下に低下し
、人体に対して全く影響のない飲料水としても適した無
菌濾過水が得られる。すなわち、蛇口から濾過水を放水
させている間は、濾過水は殺菌力はないが、人体に無害
であり、このときに蛇口から細菌類が侵入することはな
く、逆汚染の生じ得る濾過水の停止時に殺菌力を発揮す
るという優れた効果を示すものである。
The granular bactericidal material of the present invention has excellent sustained release properties of bactericide (iodine). Therefore, it is suitable for use by being stored in a faucet cap having a large number of small openings, which are the final outlet of water for filtration in a precision filtration device, for example. The iodine adsorbed on the polymer is slowly released into the filtered water within the faucet cap, so when the filtration device is stopped, which may cause back contamination, the concentration of iodine in the stagnant water within the faucet cap decreases. It gradually increases in level and has sufficient sterilizing power. Therefore, bacteria are prevented from entering the faucet from the air that comes into contact with the faucet (reverse contamination). Filtered water with a high iodine concentration that remained in the faucet when the filtration device was stopped for a long period of time is not suitable as drinking water, but if the amount of filtered water that had been retained in the faucet is discharged, The iodine concentration in the filtered water is immediately reduced to below its detection limit, and sterile filtered water, which has no effect on the human body and is suitable as drinking water, can be obtained. In other words, while the filtered water is being discharged from the faucet, the filtered water does not have sterilizing power, but it is harmless to the human body, and at this time, bacteria will not enter from the faucet, and the filtered water can cause back contamination. It exhibits an excellent sterilizing effect when the water is stopped.

本発明の殺菌材は、上記のようにして使用する場合には
、その殺菌力は、通常二箇月程度持続する。特にヨード
を吸着させる重合体の色を白色若しくは無着色のものを
使用すれば、この殺菌材が殺菌力を有しているか否かに
ついては、殺菌材の色を観察すれば容易に識別できる。
When the bactericidal material of the present invention is used as described above, its bactericidal activity usually lasts for about two months. In particular, if the color of the polymer that adsorbs iodine is white or uncolored, whether or not the bactericidal material has bactericidal activity can be easily determined by observing the color of the bactericidal material.

すなわち、ヨードが吸着され殺菌力を有するものは、ヨ
ード特宥の灰褐色を呈するが、ヨードが全て放出された
ものは白色若しくは無着色の粒状物へ変化する。なお、
本発明の殺菌材は、不使用時にはヨードが昇化するため
密封して保管する必要がある。
That is, when iodine is adsorbed and has a bactericidal effect, it exhibits a grayish-brown color that is unique to iodine, but when all iodine has been released, it changes to white or uncolored granules. In addition,
The sterilizing material of the present invention needs to be stored in a sealed container because the iodine will elevate when not in use.

本発明を完成するに至る過程に於いて、ポリオレフィン
、ポリエステル、ポリスチレン、ポリブタジェン、AS
樹脂、シリコン樹脂、PMMA等の他の種々の汎用プラ
スチックの粒状物へヨードを吸着させ、その吸着性、徐
放性について検討したが、ABS樹脂に於いて最も優れ
た効果が得られた。
In the process of completing the present invention, polyolefin, polyester, polystyrene, polybutadiene, AS
Iodine was adsorbed to the particles of various other general-purpose plastics such as resin, silicone resin, and PMMA, and their adsorption and sustained release properties were examined, but the most excellent effect was obtained with ABS resin.

また、粒状物の大きさとしても前記の範囲のものが最適
であり、これより小さい場合には、単位体積当りの表面
積が増加し、ヨードをより大量に吸着させることは可能
であるが、この殺菌材を蛇口キャップ内に濾過水の放出
口に詰まらないように収納するには特別の工夫が必要と
なり、またその寿命が低下する。一方、前記範囲より大
きい場合には、表面積が小さくなりヨードの吸着量が少
なくなり過ぎるため、適当な殺菌力を得るには過大な量
の粒状物を蛇口キャップ内に充填する必要が生じ実用的
ではない。
In addition, the optimum size of the granules is within the above range; if the size is smaller than this, the surface area per unit volume increases and it is possible to adsorb a larger amount of iodine. Special measures are required to store the sterilizing agent within the faucet cap so that it does not clog the filtered water outlet, which also shortens its lifespan. On the other hand, if it is larger than the above range, the surface area will be small and the amount of iodine adsorbed will be too small, making it necessary to fill the faucet cap with an excessive amount of granular material to obtain an appropriate sterilizing power, making it impractical. isn't it.

[本発明の効果] 以上詳述した本発明の水処理用殺菌材は、徐放性に優れ
ており、かつ取り扱いいやすい形状を有しているため、
精密濾過装置の逆汚染防止用として蛇口キャップ内に充
填するのに特に好適である。更にその製造も極めて簡易
であり、低コストの生産が可能な殺菌材である。
[Effects of the present invention] The disinfectant for water treatment of the present invention described in detail above has excellent sustained release properties and has a shape that is easy to handle.
It is particularly suitable for filling into faucet caps to prevent back contamination of microfiltration devices. Furthermore, it is extremely simple to manufacture and is a sterilizing material that can be produced at low cost.

特許出願人 三菱レイヨン株式会社Patent applicant: Mitsubishi Rayon Co., Ltd.

Claims (1)

【特許請求の範囲】 1)ABS樹脂の粒状物にヨードを吸着させてなる殺菌
材。 2)前記粒状物の体積が0.01〜2.0cff13で
ある特許請求の範囲第1項記載の殺菌材。 3)ヨードの吸着量が、前記粒状物に対し、1重量%以
上である特許請求の範囲第1項記載の殺菌材。
[Claims] 1) A sterilizing material made by adsorbing iodine to granules of ABS resin. 2) The sterilizing material according to claim 1, wherein the volume of the granular material is 0.01 to 2.0 cff13. 3) The sterilizing material according to claim 1, wherein the amount of iodine adsorbed is 1% by weight or more based on the granules.
JP59086181A 1984-05-01 1984-05-01 Sterilization material for water treatment Pending JPS60232288A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59086181A JPS60232288A (en) 1984-05-01 1984-05-01 Sterilization material for water treatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59086181A JPS60232288A (en) 1984-05-01 1984-05-01 Sterilization material for water treatment

Publications (1)

Publication Number Publication Date
JPS60232288A true JPS60232288A (en) 1985-11-18

Family

ID=13879590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59086181A Pending JPS60232288A (en) 1984-05-01 1984-05-01 Sterilization material for water treatment

Country Status (1)

Country Link
JP (1) JPS60232288A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02251292A (en) * 1989-03-24 1990-10-09 Shinagawa Nenryo Kk Sterilizing material for cooling tower
JPH10165960A (en) * 1996-12-10 1998-06-23 Tomey Technol Corp Antibacterial composition, its production, antibacterial mixed granular matter using this composition, liquid supply device fitted with microorganism penetration preventing function and iodine-containing solution producing apparatus
US5948385A (en) * 1996-09-30 1999-09-07 Baxter International Inc. Antimicrobial materials
JP2003213022A (en) * 2001-11-06 2003-07-30 Tomey Corp Simple method for producing iodine-including article and iodine gas sustained releaser having resistance to water and disinfection system using the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02251292A (en) * 1989-03-24 1990-10-09 Shinagawa Nenryo Kk Sterilizing material for cooling tower
JPH0512038B2 (en) * 1989-03-24 1993-02-17 Shinagawa Nenryo Kk
US5948385A (en) * 1996-09-30 1999-09-07 Baxter International Inc. Antimicrobial materials
JPH10165960A (en) * 1996-12-10 1998-06-23 Tomey Technol Corp Antibacterial composition, its production, antibacterial mixed granular matter using this composition, liquid supply device fitted with microorganism penetration preventing function and iodine-containing solution producing apparatus
JP2003213022A (en) * 2001-11-06 2003-07-30 Tomey Corp Simple method for producing iodine-including article and iodine gas sustained releaser having resistance to water and disinfection system using the same

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