JP2001310191A - Method for treating aqueous system - Google Patents
Method for treating aqueous systemInfo
- Publication number
- JP2001310191A JP2001310191A JP2000132086A JP2000132086A JP2001310191A JP 2001310191 A JP2001310191 A JP 2001310191A JP 2000132086 A JP2000132086 A JP 2000132086A JP 2000132086 A JP2000132086 A JP 2000132086A JP 2001310191 A JP2001310191 A JP 2001310191A
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- water
- aqueous system
- corrosion
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- present
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、各種工業用水、排
水冷却水系、冷温水系、循環式浴槽等の水系において、
細菌類、特にレジオネラ属菌を殺菌し、系内のスライム
コントロールを行うとともに、水系に用いられている銅
系材質からなる材料における腐食の発生を防止する。TECHNICAL FIELD The present invention relates to a water system such as various industrial waters, waste water cooling water systems, cold / hot water systems, circulating bathtubs, etc.
It sterilizes bacteria, especially Legionella spp., Controls slime in the system, and prevents corrosion of copper-based materials used in aqueous systems.
【０００２】[0002]
【従来の技術】空調設備や冷蔵庫、冷凍庫などに用いら
れる冷凍装置では、熱交換を効果的に行うため、開放型
の冷却塔などによって冷却された循環水を利用すること
が多い。このような循環水中には外部から微生物などが
入り込んで増殖しやすく、スライム発生などによる熱交
換器の熱交換効率の低下や、ストレーナーの閉塞などの
障害を起こすほか、レジオネラ属菌などの病原菌が増殖
・繁殖し、在郷軍人病やポンテアック熱のような病気を
引き起こす原因となる。2. Description of the Related Art Refrigeration systems used in air conditioners, refrigerators, freezers, and the like often use circulating water cooled by an open cooling tower or the like in order to effectively exchange heat. In such circulating water, microorganisms and the like easily enter and proliferate from outside, causing heat exchange efficiency of the heat exchanger to decrease due to the generation of slime, obstruction such as blockage of strainers, and pathogens such as Legionella spp. Proliferates and reproduces, causing illnesses such as Legionnaires' disease and Pontiac fever.
【０００３】このような問題の対策として、水系に添加
してレジオネラ属菌などの病原菌の殺菌や、スライムの
増殖を抑制するための各種殺菌剤や抗菌剤が種々提案さ
れてきた。しかし、これら薬剤のうち、実験室内で殺菌
効果を示すものであっても、実際の水系に応用した場合
には充分な効果が得られない場合が多かった。[0003] As a countermeasure against such a problem, various disinfectants and antibacterial agents have been proposed to be added to an aqueous system to kill pathogens such as Legionella spp. And to suppress the growth of slime. However, among these agents, even those that show a bactericidal effect in a laboratory are often not able to obtain a sufficient effect when applied to an actual aqueous system.
【０００４】また、上記のような循環水系の配管や機器
には、熱交換等の効率向上のため、あるいは加工性が良
好である点から銅材料からなる部材が用いられることが
多い。しかし、銅材料は水中の溶存酸素、ｐＨ、各種イ
オンなどの影響により、腐食や孔食が発生して機器や配
管の寿命が著しく短くなる等の問題が生じる。In addition, a member made of a copper material is often used in the circulating water piping and equipment as described above in order to improve the efficiency of heat exchange or the like or because of good workability. However, the copper material has problems such as corrosion and pitting caused by the effects of dissolved oxygen, pH, various ions and the like in water, and the life of equipment and piping is significantly shortened.
【０００５】このような銅材料に対する腐食防止のため
に、水系に対しベンゾトリアゾール、トリルトリアゾー
ル、メルカプトベンゾチアゾールなどの防食剤を添加す
る対策が行われてきた。しかし、これら従来の防食剤で
は、場合によってはその効果が極めて短時間で失われた
り、得られる効果自体が低いと云った問題があった。[0005] In order to prevent corrosion of such copper materials, measures have been taken to add an anticorrosive such as benzotriazole, tolyltriazole, mercaptobenzothiazole to an aqueous system. However, these conventional anticorrosives have a problem that the effect may be lost in a very short time or the obtained effect itself may be low.
【０００６】さらに、腐食の一形態として微生物が関与
している、微生物による孔食が知られているが、これら
従来の防食剤ではこのような微生物腐食には対応でき
ず、また従来の微生物防除剤を併用してもこのような微
生物による孔食の発生を抑制することができなかった。[0006] Further, pitting corrosion by microorganisms is known, in which microorganisms are involved as one form of corrosion. However, these conventional anticorrosive agents cannot cope with such microbial corrosion, and conventional microbial control. Even when the agent was used in combination, the occurrence of pitting corrosion by such microorganisms could not be suppressed.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、上記した従
来の問題点を改善する、すなわち、実際の水系での使用
においても充分な殺菌効果を有しながら、同時に銅材料
に対する腐食を防止できる水系の処理方法を提供するこ
とを目的とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, that is, it has a sufficient bactericidal effect even when used in an actual water system, and at the same time, can prevent corrosion to a copper material. An object of the present invention is to provide an aqueous treatment method.
【０００８】[0008]
【課題を解決するための手段】本発明者等は銅材料に対
する腐食を防止する薬剤について研究を行う過程で、殺
菌剤として開発されつつあったダイマー型ピリジニウム
化合物のうち、一部の薬剤が銅材料の防食にも著しい効
果を有するとの驚くべき事実を発見し、本発明に至っ
た。Means for Solving the Problems The inventors of the present invention conducted research on an agent for preventing corrosion of a copper material, and found that some of the dimer-type pyridinium compounds which had been developed as germicides were copper-based. The present inventors have found the surprising fact that the material has a remarkable effect also on the corrosion prevention of the material, leading to the present invention.
【０００９】すなわち、本発明の水系の処理方法は上記
課題を解決するため、請求項１に記載の通り、下記式
（Ｉ）で示されるダイマー型ピリジニウム化合物を対象
水系に添加する水系の処理方法である。That is, in order to solve the above-mentioned problems, an aqueous treatment method of the present invention comprises adding a dimer-type pyridinium compound represented by the following formula (I) to a target aqueous system. It is.
【００１０】[0010]
【化２】 式（Ｉ）中Ｒ1はアルキル基、Ｒ2は炭素数２以上のポリ
メチレン基、ＸはＣｌ、Ｂｒ、Ｉのいずれかである。Embedded image In the formula (I), R 1 is an alkyl group, R 2 is a polymethylene group having 2 or more carbon atoms, and X is any of Cl, Br and I.
【００１１】[0011]
【発明の実施の形態】本発明の水系の処理方法におい
て、上記アルキル基の炭素の数が１４以下であると高い
殺菌・静菌及び銅材料の防食性が得られる。さらに炭素
の数が１０以上であると非常に高い殺菌・静菌性及び銅
材料の防食性が同時に得られる。BEST MODE FOR CARRYING OUT THE INVENTION In the aqueous treatment method of the present invention, when the number of carbon atoms in the alkyl group is 14 or less, high bactericidal / bacteriostatic and anticorrosive properties of the copper material can be obtained. Further, when the number of carbon atoms is 10 or more, very high bactericidal / bacteriostatic properties and anticorrosiveness of the copper material can be simultaneously obtained.
【００１２】本発明の水系の処理方法において、式
（１）で示されるダイマー型ピリジニウム化合物におい
て、Ｒ1は直鎖アルキル基であることが望ましい。ま
た、ＸはＣｌ、Ｂｒ、Ｉのいずかである。In the aqueous treatment method of the present invention, in the dimer-type pyridinium compound represented by the formula (1), R 1 is preferably a straight-chain alkyl group. X is any of Cl, Br and I.
【００１３】本発明の水系の処理方法において、式
（１）で示されるダイマー型ピリジニウム化合物の添加
量は、各種工業用水、排水、冷却水系、冷温水系、循環
式浴槽等の水系などの対象水系に対し０．０５ｍｇ／Ｌ
以上１０００ｍｇ／Ｌ以下の濃度となるようにする。
０．０５ｍｇ／Ｌ未満であると本発明の効果が得られに
くく、また１０００ｍｇ／Ｌ超の場合には効果が飽和し
て無駄となる。In the method for treating an aqueous system of the present invention, the amount of the dimer-type pyridinium compound represented by the formula (1) depends on the target aqueous system such as various industrial waters, wastewater, cooling water systems, cold / hot water systems, and water systems such as circulation bathtubs. 0.05mg / L
The concentration should be at least 1000 mg / L.
If it is less than 0.05 mg / L, it is difficult to obtain the effects of the present invention, and if it is more than 1000 mg / L, the effect is saturated and wasted.
【００１４】本発明の水系の処理方法において、式
（１）で示されるダイマー型ピリジニウム化合物の添加
は必須であり、適正量の添加により充分な静菌性及び防
食性が得られる。しかし、さらにその特性を改良するな
どの目的で、本発明の効果が損なわれない限り、例えば
アクリル酸系重合体、マレイン酸系重合体、メタクリル
酸系重合体、スルホン酸系重合体、燐酸系重合体、イタ
コン酸系重合体、イソブチレン系重合体、ホスホン酸、
ホスフィン酸、あるいはこれらの水溶性塩などのスケー
ル防止剤、例えば５−クロロ−２−メチル−４−イソチ
アゾリン−３−オン、２−メチル−４−イソチアゾリン
−３−オン、１，２−ベンゾイソチアゾリン−３−オン
等のイソチアゾロン系化合物、例えばグルタルアルデヒ
ド、フタルアルデヒド等のアルデヒド類、過酸化水素、
ヒドラジン、塩素系殺菌剤（次亜塩素酸ナトリウム
等）、臭素系殺菌剤及びヨウ素系殺菌剤、さらにジチオ
ール系化合物、メチレンビスチオシアネートなどのチオ
シアネート系化合物、ヨーネンポリマー、四級アンモニ
ウム塩系化合物などのスライム防止剤、例えばエチレン
ジアミン、ジエチレントリアミン等のアミン系化合物、
例えばニトリロ三酢酸、エチレンジアミン四酢酸、ジエ
チレントリアミン五酢酸等のアミノカルボン酸系化合
物、例えばグルコン酸、クエン酸、シュウ酸、ギ酸、酒
石酸、フィチン酸、琥珀酸、乳酸等の有機カルボン酸な
ど、各種の水処理剤を併用することができ、その場合も
本発明に含まれる。In the aqueous treatment method of the present invention, the addition of a dimer-type pyridinium compound represented by the formula (1) is essential, and sufficient bacteriostatic and anticorrosive properties can be obtained by adding an appropriate amount. However, for the purpose of further improving the properties, for example, acrylic acid-based polymers, maleic acid-based polymers, methacrylic acid-based polymers, sulfonic acid-based polymers, and phosphoric acid-based polymers as long as the effects of the present invention are not impaired. Polymer, itaconic acid polymer, isobutylene polymer, phosphonic acid,
Scale inhibitors such as phosphinic acid or water-soluble salts thereof, for example, 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, 1,2-benzoisothiazoline Isothiazolone compounds such as -3-one, aldehydes such as glutaraldehyde and phthalaldehyde, hydrogen peroxide,
Hydrazine, chlorine-based disinfectants (such as sodium hypochlorite), bromine-based disinfectants and iodine-based disinfectants, as well as dithiol-based compounds, thiocyanate-based compounds such as methylenebisthiocyanate, ionene polymers, and quaternary ammonium salt-based compounds Slime inhibitor, for example, amine compounds such as ethylenediamine, diethylenetriamine,
For example, various aminocarboxylic acid compounds such as nitrilotriacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, etc., and organic carboxylic acids such as gluconic acid, citric acid, oxalic acid, formic acid, tartaric acid, phytic acid, succinic acid, lactic acid, etc. A water treatment agent can be used in combination, and such a case is also included in the present invention.
【００１５】[0015]
【実施例】以下に本発明の水系の処理方法の実施例につ
いて具体的に説明する。 ＜実施例１：殺菌力の評価＞ （試験水の調製）表１及び表２に示す薬品をそれぞれの
濃度になるよう蒸留水に溶解して試験水を作製した。な
お、これら表中のＳ−ｎ1，ｎ2のうち、ｎ1はポリメチ
レン基のメチレン基の数、ｎ2はアルキル基の炭素数を
それぞれ示し、Ｓ−４，８は４，４′−（テトラメチレ
ンジチオ）ビス（１−オクチルピリジニウム−アイオダ
イド）を、Ｓ−４，１０は４，４′−（テトラメチレン
ジチオ）ビス（１−デシルピリジニウム−アイオダイ
ド）を、Ｓ−４，１２は４，４′−（テトラメチレンジ
チオ）ビス（１−ドデシルピリジニウム−アイオダイ
ド）を、Ｓ−４，１４は４，４′−（テトラメチレンジ
チオ）ビス（１−テトラデシルピリジニウム−アイオダ
イド）を、Ｓ−４，１８は４，４′−（テトラメチレン
ジチオ）ビス（１−オクタデシルピリジニウム−アイオ
ダイド）をそれぞれ示し、Ｓ−６，８は４，４′−（ヘ
キサメチレンジチオ）ビス（１−オクチルピリジニウム
−アイオダイド）を、Ｓ−６，１０は４，４′−（ヘキ
サメチレンジチオ）ビス（１−デシルピリジニウム−ア
イオダイド）を、Ｓ−６，１２は４，４′−（ヘキサメ
チレンジチオ）ビス（１−ドデシルピリジニウム−アイ
オダイド）を、Ｓ−６，１４は４，４′−（ヘキサメチ
レンジチオ）ビス（１−テトラデシルピリジニウム−ア
イオダイド）を、Ｓ−６，１８は４，４′−（ヘキサメ
チレンジチオ）ビス（１−オクタデシルピリジニウム−
アイオダイド）をそれぞれ示し、また、Ｓ−１０，８は
４，４′−（デカメチレンジチオ）ビス（１−オクチル
ピリジニウム−アイオダイド）を、Ｓ−１０，１０は
４，４′−（デカメチレンジチオ）ビス（１−デシルピ
リジニウム−アイオダイド）を、Ｓ−１０，１２は４，
４′−（デカメチレンジチオ）ビス（１−ドデシルピリ
ジニウム−アイオダイド）を、Ｓ−１０，１４は４，
４′−（デカメチレンジチオ）ビス（１−テトラデシル
ピリジウム−アイオダイド）を、Ｓ−１０，１８は４，
４′−（デカメチレンジチオ）ビス（１−オクタデシル
ピリジニウム−アイオダイド）をそれぞれ示し、それぞ
れ式（Ｉ）で示される化合物である（以下同様）。EXAMPLES Examples of the aqueous treatment method of the present invention will be specifically described below. <Example 1: Evaluation of bactericidal activity> (Preparation of test water) Test water was prepared by dissolving the chemicals shown in Tables 1 and 2 in distilled water so as to have respective concentrations. Incidentally, shows among S-n 1, n 2 In the tables below, n 1 is the number of methylene groups polymethylene group, n 2 is the number of carbon atoms in the alkyl group, respectively, S-4, 8 4,4' (Tetramethylenedithio) bis (1-octylpyridinium-iodide), S-4,10 is 4,4 '-(tetramethylenedithio) bis (1-decylpyridinium-iodide), S-4,12 is 4 , 4 '-(tetramethylenedithio) bis (1-dodecylpyridinium-iodide); S-4,14 is 4,4'-(tetramethylenedithio) bis (1-tetradecylpyridinium-iodide); 4,18 represents 4,4 '-(tetramethylenedithio) bis (1-octadecylpyridinium-iodide), and S-6,8 represents 4,4'-(hexamethylenedithio). Bis (1-octylpyridinium-iodide), S-6,10 is 4,4 '-(hexamethylenedithio) bis (1-decylpyridinium-iodide), S-6,12 is 4,4'-( Hexamethylenedithio) bis (1-dodecylpyridinium-iodide), S-6,14 is 4,4 '-(hexamethylenedithio) bis (1-tetradecylpyridinium-iodide), S-6,18 is 4 , 4 '-(Hexamethylenedithio) bis (1-octadecylpyridinium-
S-10,8 represents 4,4 '-(decamethylenedithio) bis (1-octylpyridinium-iodide), and S-10,10 represents 4,4'-(decamethylenedithiol). ) Bis (1-decylpyridinium-iodide), S-10,12 is 4,
4 '-(decamethylenedithio) bis (1-dodecylpyridinium-iodide);
4 '-(decamethylenedithio) bis (1-tetradecylpyridium-iodide), S-10,18 is 4,
4 ′-(Decamethylenedithio) bis (1-octadecylpyridinium-iodide), each of which is a compound represented by the formula (I) (the same applies hereinafter).
【００１６】また、表２中ＣＭＩは微生物防除剤である
５−クロロ−２−メチル−４−イソチアゾリン−３−オ
ンを、ＢＲＮＰＯＬは同様に微生物防除剤である２−ブ
ロモ−２−ニトロプロパン−１，３−ジオールをそれぞ
れ示す（以下同様）。In Table 2, CMI is 5-chloro-2-methyl-4-isothiazolin-3-one which is a microbial control agent, and BRNPOL is 2-bromo-2-nitropropane which is also a microbial control agent. 1,3-diol is shown (the same applies hereinafter).
【００１７】[0017]
【表１】 [Table 1]
【００１８】[0018]
【表２】 [Table 2]
【００１９】前培養したレジオネラ属菌を蒸留水に懸濁
させ、この懸濁液を、上記の試験水をそれぞれを３０ｍ
Ｌずつ分注した平底フラスコに５０μＬ添加した。また
コントロールとして薬品を添加していない蒸留水を３０
ｍＬ分注した平底フラスコにも同様に５０μＬ添加した
（表２における「薬品なし」）。The pre-cultured Legionella spp. Is suspended in distilled water, and this suspension is mixed with the above test water for 30 m each.
50 μL was added to a flat bottom flask dispensed L by L. As a control, 30 ml of distilled water containing no chemical was added.
Similarly, 50 μL was added to the flat bottom flask dispensed in mL (“No chemical” in Table 2).
【００２０】これらについて、振盪培養を行い、３、
６、２４時間後に、試験水の一部を採取し、必要に応じ
て段階希釈した後、その１００μＬをＢＣＹＥ−α培地
に塗布し、これら培地を３６℃で５日間培養後、培地上
に発生したコロニー数をカウントすることによって残存
菌数を調べた。結果を表１及び表２に併せて記載する。
なお、表中「＜１０」はコロニー数が少なく、上記方法
では検出されない下限値未満となったことを示す。For these, shaking culture was performed, and
After 6 and 24 hours, a portion of the test water is collected, serially diluted as necessary, 100 μL of the diluted test medium is applied to BCYE-α medium, and the medium is cultured at 36 ° C. for 5 days, and then generated on the medium. The number of the remaining bacteria was examined by counting the number of colonies thus obtained. The results are shown in Tables 1 and 2.
In addition, "<10" in the table indicates that the number of colonies was small and the value was less than the lower limit which was not detected by the above method.
【００２１】表１及び表２により式（Ｉ）で表される本
発明に係る系で残存菌数が少なく、特に式（Ｉ）におけ
るアルキル基の炭素の数が１４以下であると高い殺菌効
果が得られ、さらに炭素の数が１０以上であると非常に
高い殺菌効果が得られることが判る。According to Tables 1 and 2, in the system according to the present invention represented by the formula (I), the number of residual bacteria is small, and particularly when the number of carbon atoms of the alkyl group in the formula (I) is 14 or less, a high bactericidal effect is obtained. It can be seen that when the number of carbon atoms is 10 or more, a very high bactericidal effect can be obtained.
【００２２】＜実施例２：防食性の評価、その１＞微生
物腐食ではない一般の腐食、ただし、高腐食性条件を想
定して検討を行った。すなわち、つくば市水に塩化ナト
リウム及び硫酸ナトリウムを添加して、塩化物イオン濃
度及び硫酸イオン濃度をそれぞれ５００ｍｇ／Ｌとした
高腐食性水（ｐＨ：７．２）を調製し、これを試験水と
した。この試験水に表３に示す薬品をそれぞれ０．１ｍ
ｇ／Ｌ、０．５ｍｇ／Ｌ或いは１ｍｇ／Ｌとなるように
添加した。<Example 2: Evaluation of anticorrosion properties, part 1> General corrosion which is not microbial corrosion, but was examined under the assumption of high corrosive conditions. That is, sodium chloride and sodium sulfate were added to Tsukuba city water to prepare highly corrosive water (pH: 7.2) having a chloride ion concentration and a sulfate ion concentration of 500 mg / L, respectively, and this was used as a test water. And Each of the chemicals shown in Table 3 was added to the test water in an amount of 0.1 m.
g / L, 0.5 mg / L or 1 mg / L.
【００２３】これら薬品添加液１Ｌそれぞれにテストピ
ース（タフピッチ銅（ＪＩＳ・Ｃ１１００）、表面積
０．２７２ｄｍ2）を浸漬し、３５℃に保って３日間３
００ｒｐｍで撹拌した。終了後、テストピースを取り出
し、その腐食減量から腐食度（ｍｄｄ）を算出した。結
果を表３に併せて示す。A test piece (tough pitch copper (JIS C1100), surface area: 0.272 dm 2 ) was immersed in each 1 L of the chemical additive solution, and kept at 35 ° C. for 3 days for 3 days.
Stirred at 00 rpm. After completion, the test piece was taken out, and the corrosion degree (mdd) was calculated from the corrosion weight loss. The results are shown in Table 3.
【００２４】なお、表３中、ＭＢＴＣはメチレンビスチ
オシアネート、ＧＡはグルタルアルデヒドであり、これ
らは微生物防除剤として知られている。また、ＢＴはベ
ンゾトリアゾール、ＴＴＡはトリルトリアゾールであっ
て共に銅の防食剤として用いられている。また、「薬品
なし」はコントロールであり、薬品を添加していない。In Table 3, MBTC is methylenebisthiocyanate and GA is glutaraldehyde, which are known as microbial control agents. BT is benzotriazole and TTA is tolyltriazole, both of which are used as anticorrosives for copper. “No chemical” is a control, and no chemical is added.
【００２５】[0025]
【表３】 [Table 3]
【００２６】表３により式（Ｉ）で表される薬品を添加
した本発明に係る系では腐食度が小さく、特に式（Ｉ）
におけるアルキル基の炭素の数が１４以下であると高い
防食効果が得られ、さらに炭素の数が１０以上であると
低濃度においても防食効果が得られることが判る。この
防食効果は従来、銅の防食剤として用いられてきたベン
ゾトリアゾール及びトリルトリアゾールと同じレベルで
あることが判る。According to Table 3, the system according to the present invention to which the chemical represented by the formula (I) is added has a low corrosion rate, and particularly the formula (I)
It can be seen that when the number of carbon atoms of the alkyl group in is 14 or less, a high anticorrosion effect can be obtained, and when the number of carbon atoms is 10 or more, the anticorrosion effect can be obtained even at a low concentration. It can be seen that this anticorrosion effect is at the same level as benzotriazole and tolyltriazole which have been conventionally used as copper anticorrosives.
【００２７】＜実施例３：防食性の評価、その２＞上記
実施例２では腐食性イオンを有する系における防食性に
ついて検討を行ったが、次いで、微生物腐食に対する効
果について調べた。<Example 3: Evaluation of anticorrosion property, part 2> In Example 2, the anticorrosion property of a system having corrosive ions was examined. Next, the effect on microbial corrosion was examined.
【００２８】実施例２で用いたものと同じ、硫酸イオ
ン、塩酸イオンを添加した腐食性イオンを有する水に、
実際に微生物腐食を生じたと思われる水系（その水系に
接する銅材料からなる機器に孔食が発生した）から採取
した微生物性スライムを５ｇ／Ｌとなるよう添加し試験
水とし、これに表３に示す各薬品をそれぞれ１ｍｇ／Ｌ
となるように添加し、実施例２同様にして、銅の腐食性
について調べた（このときコントロールとして「薬品な
し」（薬品を添加しない）についても併せて検討し
た）。結果を表４に併せて記載する。The same water as used in Example 2 containing corrosive ions to which sulfate ions and hydrochloric acid ions were added,
A test water was prepared by adding 5 g / L of microbial slime collected from a water system that seems to have actually caused microbial corrosion (pitting occurred on equipment made of a copper material in contact with the water system). 1mg / L of each chemical shown in
, And corrosiveness of copper was examined in the same manner as in Example 2 (at this time, "no chemical" (no chemical added) was also examined as a control). The results are also shown in Table 4.
【００２９】[0029]
【表４】 [Table 4]
【００３０】表４により本発明の水系の処理方法によれ
ば、微生物腐食においても、銅の防食剤として用いられ
てきたベンゾトリアゾール及びトリルトリアゾールで得
られる防食性と比べ、非常に高い防食性が得られること
が判る。また、従来水系の微生物防除剤として知られる
メチレンビスチオシアネート、グルタルアルデヒドでは
若干の防食性はみられたものの、充分なものでないこと
も判る。According to Table 4, according to the aqueous treatment method of the present invention, even in the case of microbial corrosion, a very high anticorrosion property is obtained as compared with the anticorrosion properties obtained with benzotriazole and tolyltriazole which have been used as copper anticorrosives. It turns out that it can be obtained. It is also found that methylene bisthiocyanate and glutaraldehyde, which are conventionally known as water-based microbial control agents, have some anticorrosion properties but are not sufficient.
【００３１】＜アメーバの抑制効果についての検討＞レ
ジオネラ属菌はアメーバに寄生して共存する場合が多
い。このため、水系のレジオネラ属菌を抑制しても、ア
メーバの抑制ができないと、アメーバ体内に寄生してい
るレジオネラ属菌がすぐに水系内で繁殖してしまい、実
質的な殺菌効果が得られない。<Study on Inhibitory Effect of Amoeba> Legionella spp. Are often parasitized and coexist with amoeba. For this reason, even if water-based Legionella spp. Is suppressed, if amoeba cannot be suppressed, Legionella spp. That is parasitic in the amoeba body will rapidly propagate in the water system, and a substantial bactericidal effect is obtained. Absent.
【００３２】ここで本発明の水系の処理方法のアメーバ
抑制の効果について調べた。アメーバがそれぞれ２．８
×１０4個生存している試験水に表５に示した薬品を添
加した後、２４時間後のアメーバ生存数を調べた。ま
た、薬品を添加しない系についても同様に検討を行っ
た。結果を併せて表５に示す。Here, the effect of suppressing the amoeba of the aqueous treatment method of the present invention was examined. 2.8 amoeba each
After adding the chemicals shown in Table 5 to the test water in which × 10 4 survived, the number of surviving amoeba after 24 hours was examined. In addition, a system to which no chemical was added was also examined. The results are shown in Table 5.
【００３３】[0033]
【表５】 [Table 5]
【００３４】表５より、本発明の水系の処理方法によれ
ば、レジオネラ属菌の宿主となる可能性が高いアメーバ
も効果的に抑制することができ、効果的なレジオネラ属
菌の駆除が可能であることが判る。また、そのアメーバ
抑制効果は、レジオネラ属菌に対する代表的な殺菌剤で
ある２−ブロモ−２−ニトロプロパン−１，３−ジオー
ル（ＢＲＮＰＯＬ）を用いた場合より高い。From Table 5, it can be seen that the aqueous treatment method of the present invention can also effectively suppress amoeba, which is likely to be a host for Legionella spp., And effectively control Legionella spp. It turns out that it is. In addition, its amoeba inhibitory effect is higher than that obtained when 2-bromo-2-nitropropane-1,3-diol (BRNPOL), which is a typical bactericide against Legionella spp., Is used.
【００３５】[0035]
【発明の効果】本発明の水系の処理方法は、微生物防除
性に優れ、かつ、水系に接する銅材料からなる機器の腐
食を効果的に防止することができる。このように１種の
薬品の添加量を制御するだけで２つの効果が得られるた
め、添加量の制御が容易で、薬品・必要な設備も１つだ
けですむなどの経済的効果も高い優れた水系の処理方法
である。The aqueous treatment method of the present invention is excellent in controlling microorganisms and can effectively prevent corrosion of equipment made of a copper material in contact with the aqueous system. As described above, two effects can be obtained simply by controlling the amount of addition of one kind of chemical, so that the amount of addition can be easily controlled, and the economical effect such as only one chemical and necessary equipment is required. It is an aqueous treatment method.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０２Ｆ 1/50 ５３２ Ｃ０２Ｆ 1/50 ５３２Ｄ ５３２Ｈ Ａ０１Ｎ 43/40 １０１ Ａ０１Ｎ 43/40 １０１Ｋ (72)発明者 白井 昭博 茨城県つくば市緑ケ原４−４ アクアス株 式会社つくば総合研究所内 Ｆターム(参考） 4H011 AA02 BB09 DA13 DD01 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat 参考 (Reference) C02F 1/50 532 C02F 1/50 532D 532H A01N 43/40 101 A01N 43/40 101K (72) Inventor Shirai Akihiro 4-4 Midorigahara, Tsukuba, Ibaraki Prefecture Aquas Co., Ltd. Tsukuba Research Laboratory F-term (reference) 4H011 AA02 BB09 DA13 DD01
Claims (3)
ジニウム化合物を対象水系に添加することを特徴とする
水系の処理方法。 【化１】 式（Ｉ）中Ｒ１はアルキル基、Ｒ２は炭素数２以上のポ
リメチレン基、ＸはＣｌ、Ｂｒ、Ｉのいずれかである。1. An aqueous treatment method comprising adding a dimer-type pyridinium compound represented by the following formula (I) to a target aqueous system. Embedded image In the formula (I), R1 is an alkyl group, R2 is a polymethylene group having 2 or more carbon atoms, and X is any of Cl, Br, and I.
あることを特徴とする請求項１に記載の水系の処理方
法。2. The method according to claim 1, wherein the alkyl group has 14 or less carbon atoms.
あることを特徴とする請求項２に記載の水系の処理方
法。3. The method according to claim 2, wherein the alkyl group has 10 or more carbon atoms.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000132086A JP2001310191A (en) | 2000-05-01 | 2000-05-01 | Method for treating aqueous system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000132086A JP2001310191A (en) | 2000-05-01 | 2000-05-01 | Method for treating aqueous system |
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|---|---|
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ID=18640853
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|---|---|---|---|
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| Country | Link |
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| JP (1) | JP2001310191A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004143061A (en) * | 2002-10-23 | 2004-05-20 | Japan Enviro Chemicals Ltd | Method for stabilizing bis quaternary ammonium salt compound |
| JP2004143163A (en) * | 2002-10-03 | 2004-05-20 | Japan Enviro Chemicals Ltd | Industrial sterilizer, coating material, ink, resin emulsion, metal-processing oiling agent, dampening water |
| JP2004143140A (en) * | 2003-06-20 | 2004-05-20 | Japan Enviro Chemicals Ltd | Antimicrobial agent |
| JP2009215271A (en) * | 2008-03-13 | 2009-09-24 | Aquas Corp | Biofilm releasant, and method for releasing biofilm |
| JP2011212521A (en) * | 2010-03-31 | 2011-10-27 | Aquas Corp | Scale remover and scale removing method |
-
2000
- 2000-05-01 JP JP2000132086A patent/JP2001310191A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004143163A (en) * | 2002-10-03 | 2004-05-20 | Japan Enviro Chemicals Ltd | Industrial sterilizer, coating material, ink, resin emulsion, metal-processing oiling agent, dampening water |
| JP4566540B2 (en) * | 2002-10-03 | 2010-10-20 | 日本エンバイロケミカルズ株式会社 | Industrial disinfectant, paint, ink, resin emulsion, metalworking fluid, fountain solution |
| JP2004143061A (en) * | 2002-10-23 | 2004-05-20 | Japan Enviro Chemicals Ltd | Method for stabilizing bis quaternary ammonium salt compound |
| JP2004143140A (en) * | 2003-06-20 | 2004-05-20 | Japan Enviro Chemicals Ltd | Antimicrobial agent |
| JP2009215271A (en) * | 2008-03-13 | 2009-09-24 | Aquas Corp | Biofilm releasant, and method for releasing biofilm |
| JP2011212521A (en) * | 2010-03-31 | 2011-10-27 | Aquas Corp | Scale remover and scale removing method |
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