JPH08176996A - Method for preventing slime fault from occurring in pulp factory and paper manufacturing factory - Google Patents
Method for preventing slime fault from occurring in pulp factory and paper manufacturing factoryInfo
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- JPH08176996A JPH08176996A JP32293994A JP32293994A JPH08176996A JP H08176996 A JPH08176996 A JP H08176996A JP 32293994 A JP32293994 A JP 32293994A JP 32293994 A JP32293994 A JP 32293994A JP H08176996 A JPH08176996 A JP H08176996A
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- Prior art keywords
- slime
- water
- paper
- factory
- pulp
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- 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.)
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Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、パルプ工場・製紙工場
の工程水中に発生するスライム障害を防止する方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing slime damage occurring in process water of pulp and paper factories.
【0002】[0002]
【従来の技術】パルプ工場、 製紙工場においては、その
工程において使用される用水中に微生物が繁殖とすると
種々の障害を起こす原因となることはよく知られいる。
例えば、抄紙機から排出される白水中では、菌の栄養源
となるパルプを含み、また各種の薬品や填料が添加され
ている上に、適度な温度条件にあることから、菌の増殖
にとって非常に都合の良い環境にある。白水中に微生物
が繁殖すると、微生物やその代謝産物が凝集して粘着性
物質、所謂スライムを生成し、これがある大きさに成長
した時、工程水の流速等により剥離し紙料中に混入し、
紙に汚点、斑点、目玉等製品の品質を損なうこととな
り、更に、紙切れ、ワイヤーや毛布の目詰まり、腐食、
悪臭等の障害を引き起こし、操業上にも重大な影響を及
ぼすこととなる。このように工程水は製品の紙に直接接
触し、また一部紙に取り込まれるため、そこで生じるス
ライムは一般の冷却水や用水におけるものより深刻な問
題を与えることが多い。2. Description of the Related Art It is well known in pulp mills and paper mills that the proliferation of microorganisms in the water used in the process causes various problems.
For example, white water discharged from a paper machine contains pulp, which is a nutrient source for fungi, and various chemicals and fillers are added. It is in a convenient environment. When microorganisms propagate in white water, the microorganisms and their metabolites aggregate to form a sticky substance, so-called slime, and when it grows to a certain size, it peels off due to the flow rate of process water and mixes into the paper stock. ,
The quality of the product such as stains, spots, and eyeballs will be impaired on the paper, and further, paper scraps, clogging of wires and blankets, corrosion,
It will cause bad odors and other problems, and will seriously affect the operation. Since the process water directly contacts the paper of the product and is partially taken in by the paper as described above, the slime generated there is often a more serious problem than that in general cooling water or water.
【0003】紙の抄紙方法には、サイズ剤とその定着剤
である硫酸バンドを併用して抄紙する所謂酸性抄紙法
と、填料として炭酸カルシウムを用いるアルカリ抄紙法
がある。従来はpHが4〜6の酸性抄紙法が主流であっ
たが、最近ではpHを6〜8のアルカリ抄紙法が多くな
りつつある。アルカリ抄紙法では、白水のクローズド化
が可能となり、また安価な炭酸カルシウムを填料として
使えるといった事情から有利な点が多い。しかし一方で
このように抄紙法がアルカリ抄紙法に変わると、白水の
クローズド化による水温の上昇、栄養分の濃縮、填料な
どの付着が微生物の棲息場所となり、加えてスライムを
形成する微生物類の最適pHが6〜8であることなど、
従来の酸性抄紙法に較べて遥かにスライムが付着、生長
し易い環境になったという不利な点も指摘されている。
また、森林資源の保護といった環境問題から紙の再生使
用が注目され、故紙の使用比率は増加の傾向にある。故
紙の使用には、紙の品質、歩留り向上のために、多種多
様の薬品が多量に添加され、系内は汚れ易い状況となっ
ている。Paper making methods include a so-called acidic paper making method in which a sizing agent and a sulfuric acid band as a fixing agent are used in combination, and an alkaline paper making method in which calcium carbonate is used as a filler. Conventionally, an acidic papermaking method having a pH of 4 to 6 has been the mainstream, but recently, an alkaline papermaking method having a pH of 6 to 8 has been increasing. The alkaline papermaking method has many advantages in that white water can be closed and inexpensive calcium carbonate can be used as a filler. However, on the other hand, when the papermaking method is changed to the alkaline papermaking method in this way, the rise of water temperature due to the closing of white water, the concentration of nutrients, the attachment of fillers, etc. serve as a habitat for microorganisms, and in addition, the optimal microorganisms for slime formation pH of 6-8, etc.
It has also been pointed out that slime is much more adhered than in the conventional acidic papermaking method, and the environment is such that it easily grows.
In addition, recycled paper is drawing attention due to environmental issues such as the protection of forest resources, and the percentage of used paper tends to increase. In the use of waste paper, various chemicals are added in large amounts in order to improve the quality and yield of the paper, and the inside of the system is easily soiled.
【0004】パルプ工場、 製紙工場の工程水中における
微生物抑制、スライム障害防止については従来からいろ
いろな殺微生物剤の提案があり、例えば2,2−ジブロ
モ−3−ニトリロプロピオンアミド、1、4ビスブロモ
アセトキシ−2−ブテンに代表される有機Br系化合
物、 5−クロロ−2−メチル−4−イソチアゾロン−3
−オンと2−メチル−4−イソチアゾロン−3−オンの
混合物に代表されるイソチアゾロン系化合物、α−クロ
ロベンズアルドキシム(特開平6−49797号)など
が提案されている。しかし、抄紙方法の違い、故紙の使
用比率上昇など紙・パルプ工業の置かれた社会的、経済
的理由から操業条件が変わってきており、スライム障害
も多様化してきている。その結果従来の殺微生物剤では
満足できず、より改良されたものが要求されるようにな
った。例えば、従来の殺微生物剤は、酸性抄紙系ではあ
る程度の効力を有するものの、微生物が薬剤耐性がつき
やすく、薬剤に対して抵抗性のある微生物が優先しやす
いことが知られている。更に効力を上げようとすると、
多量の薬剤の投与が必要となり、処理コスト面から実用
的でない。又アルカリ抄紙系では、従来の殺微生物剤が
酸性抄紙用に開発された為、アルカリ性では効力の低下
を示す傾向があり、酸性抄紙系と同様の効果を得るに
は、多量の薬剤を使用しなければ効力が発現されず、処
理コスト面から実質的に使用できない状況下にある。こ
のような事情から、抄紙方法の違いによらず安定した効
果を有し、製品品質にも影響しない、スライム障害防止
方法が望まれている。Various microbicides have been proposed in the past for the control of microorganisms in the process water of pulp mills and paper mills and the prevention of slime disorders. For example, 2,2-dibromo-3-nitrilopropionamide, 1,4 bisbromo. An organic Br compound represented by acetoxy-2-butene, 5-chloro-2-methyl-4-isothiazolone-3
There are proposed isothiazolone compounds represented by a mixture of 1-one and 2-methyl-4-isothiazolone-3-one, α-chlorobenzaldoxime (JP-A-6-49797) and the like. However, the operating conditions are changing due to social and economic reasons in which the paper and pulp industry is placed, such as the difference in papermaking methods and the increase in the percentage of used paper, and slime obstacles are diversifying. As a result, conventional microbicides are not satisfactory, and more improved ones are required. For example, it is known that conventional microbicides have a certain degree of efficacy in an acidic papermaking system, but the microorganisms are likely to have drug resistance, and the microorganisms resistant to the drug tend to be prioritized. If you try to make it even more effective,
A large amount of drug must be administered, which is not practical in terms of processing cost. In the alkaline papermaking system, a conventional microbicide has been developed for acidic papermaking, and therefore, it tends to show a decrease in efficacy under alkaline conditions.To obtain the same effect as the acidic papermaking system, use a large amount of chemicals. Unless it is effective, it is in a situation where it cannot be practically used in terms of processing cost. Under such circumstances, there is a demand for a slime failure prevention method which has a stable effect regardless of the papermaking method and does not affect the product quality.
【0005】[0005]
【発明が解決しようとする課題】本発明の目的は、上述
のような紙・パルプ工業の操業条件の変化を踏まえ、新
たな環境にも耐えられるスライム障害防止方法を提供す
ることにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a slime failure prevention method that can withstand a new environment in view of the above-mentioned changes in the operating conditions of the paper and pulp industry.
【0006】[0006]
【課題を解決するための手段】本発明者らは、前記従来
方法の問題点を考慮しつつ、アルカリ抄紙法での条件、
故紙の比率上昇など新たに発生しつつある問題を克服す
べく鋭意研究を行った結果、特定のヒダントイン系化合
物を工程水に添加する事により、抄紙方法に関係なく、
従来の殺微生物剤より低濃度でしかも製品の品質を損な
うことなく、スライム構成菌を殺滅・生育阻害する事を
見いだし本研究を完成するに至った。DISCLOSURE OF THE INVENTION The present inventors have taken into consideration the problems of the above-mentioned conventional methods,
As a result of earnest research to overcome newly emerging problems such as increasing the ratio of waste paper, by adding a specific hydantoin compound to process water, regardless of the papermaking method,
We have completed this study by discovering that it has a lower concentration than conventional microbicides and that it kills and inhibits growth of slime-composing bacteria without impairing product quality.
【0007】すなわち、本発明はパルプ工場・製紙工場
における工程水中に一般式(I) (式中、R1及びR2は同一であっても異なっていてもよ
く、少なくとも一方は塩素、または臭素原子であり、他
方は水素原子、塩素原子または臭素原子を表し、R3及
びR4は同一であっても異なっていてもよく、それぞれ
水素原子または炭素数1〜12のアルキル基を表す。)
で表されるヒダントイン系化合物を添加して、スライム
構成菌を殺滅または生育阻害することを特徴とする、ス
ライム障害防止方法である。That is, the present invention is applicable to general formula (I) in process water in pulp mills and paper mills. (In the formula, R 1 and R 2 may be the same or different, at least one is a chlorine or bromine atom, and the other is a hydrogen atom, a chlorine atom or a bromine atom, and R 3 and R 4 are May be the same or different and each represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms.)
A method for preventing slime disorders, which comprises adding a hydantoin compound represented by to killing or inhibiting growth of slime-constituting bacteria.
【0008】上記の一般式(I)において、R1及びR2
は同一であっても異なっていてもよく、少なくとも一方
は塩素原子、あるいは臭素原子であり、他方は水素原
子、塩素原子または臭素原子である。R3及びR4は同一
であっても異なっていてもよく、それぞれ水素原子また
は炭素数1〜12、好ましくは炭素数1〜4のアルキル
基を表す。炭素数1〜12個有するアルキル基として
は、メチル基、エチル基、n−プロピル基、イソプロピ
ル基、n−ブチル基、n−ヘキシル基、2−エチルヘキ
シル基、n−オクチル基、n−ドデシル基などである。
炭素数13以上のアルキル基は、そのヒダントイン化合
物の水溶性が極度に悪くなるので好ましくない。前記一
般式で示されるヒダントイン系化合物の具体例として
は、1−ブロモ−3−クロロ−5,5−ジメチルヒダン
トイン、1,3−ジブロモ−5,5−ジエチルヒダント
イン、1,3−ジブロモ−5−メチル−5−ブチルヒダ
ントイン、1−ブロモ−3−クロロヒダントイン、1,
3−ジクロロ−5,5−ジメチルヒダントインなどが挙
げられる。In the above general formula (I), R 1 and R 2
May be the same or different and at least one is a chlorine atom or a bromine atom, and the other is a hydrogen atom, a chlorine atom or a bromine atom. R 3 and R 4 may be the same or different and each represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, preferably 1 to 4 carbon atoms. Examples of the alkyl group having 1 to 12 carbon atoms include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, n-hexyl group, 2-ethylhexyl group, n-octyl group, n-dodecyl group. And so on.
An alkyl group having 13 or more carbon atoms is not preferable because the water solubility of the hydantoin compound becomes extremely poor. Specific examples of the hydantoin compound represented by the above general formula include 1-bromo-3-chloro-5,5-dimethylhydantoin, 1,3-dibromo-5,5-diethylhydantoin and 1,3-dibromo-5. -Methyl-5-butylhydantoin, 1-bromo-3-chlorohydantoin, 1,
Examples thereof include 3-dichloro-5,5-dimethylhydantoin.
【0009】本発明のパルプ工場・製紙工場おける工程
水とは、主として砕木工程、抄紙工程、スクリーン工
程、漂白工程などから排出される、所謂白水と総称され
ている工程水の他、パルプ工場・製紙工場の工程で扱う
全ての水を含むものである。ヒダントイン類の水系への
添加量は、該水系の水質、生存微生物数、スライムの発
生の程度、ヒダントイン系化合物の種類、添加頻度など
によっても左右され一律に定められないが、通常該水系
の水に対し0.1〜100ppm、好ましくは0.5〜
50ppm、さらに好ましくは1〜20ppmである。
0.1ppmより少ないと、実質的に効果が小さく、ま
た100ppmより多いと、効果は充分にあるが、添加
量の割には効果が大きくなく、経済的にみて不利であ
る。ヒダントイン系化合物のスライム構成菌を殺滅・生
育阻害する上記濃度では、 工程上影響もなく製品の品質
を損なうこともない。Process water in the pulp mill / paper mill of the present invention includes process water generally called so-called white water, which is discharged mainly from the crushing process, the papermaking process, the screen process, the bleaching process, etc. It contains all the water handled in the paper mill process. The amount of hydantoins added to the water system is not uniformly determined depending on the water quality of the water system, the number of viable microorganisms, the degree of slime generation, the type of the hydantoin compound, the addition frequency, etc., but it is usually the water of the water system. To 0.1 to 100 ppm, preferably 0.5 to
It is 50 ppm, more preferably 1 to 20 ppm.
If it is less than 0.1 ppm, the effect is substantially small, and if it is more than 100 ppm, the effect is sufficient, but the effect is not large relative to the addition amount, which is economically disadvantageous. The above concentration of the hydantoin compound that kills and inhibits slime-forming bacteria does not affect the process and does not impair the quality of the product.
【0010】本発明で使用されるヒダントイン系化合物
は、常温で固体であり、水には一般に0.1〜0.2重
量%程度の溶解度をもっている。水系への添加にあたっ
ては、ヒダントイン系化合物を粉体にして水系に加え
る、あるいは水に溶解してから加えるなどの方法が採ら
れる。工程への添加のし易さを考慮すれば水に溶解し、
ポンプなどを用いて工程の必要箇所に注入するのが好ま
しいといえる。有機溶剤、特に水と相溶性のある有機溶
剤、例えばアセトン、ジオキサン、ジメチルホルムアミ
ド、N−メチルピロリドンなどに溶解して加えることも
できるが、水系中に有機溶剤が混入することは微生物の
栄養源ともなりうるので好ましいとはいえない。また、
水、または有機溶剤に溶解して用いる場合には、該ヒダ
ントイン化合物の安定性を考慮すれば、溶解してからで
きるだけ早急に系中に添加することが好ましい。水系へ
の添加は、一定間隔で高濃度に添加する衝撃添加、ある
いは間欠添加する方法、あるいは連続的に添加して常に
一定濃度に保つ方法があり、特に限定するものではな
い。微生物生存数が一定量以下に保たれ、スライム障害
が起きないレベルに保つように添加すればよい。The hydantoin compound used in the present invention is solid at room temperature and generally has a solubility of about 0.1 to 0.2% by weight in water. In addition to the water system, the hydantoin compound may be added to the water system in the form of powder, or may be dissolved in water and then added. When considering the ease of addition to the process, it dissolves in water,
It can be said that it is preferable to use a pump or the like to inject it into a required portion of the process. It can be dissolved in an organic solvent, particularly an organic solvent compatible with water, for example, acetone, dioxane, dimethylformamide, N-methylpyrrolidone, etc., but the presence of the organic solvent in the water system is a nutrient source for microorganisms. It can be said that it is not preferable. Also,
When used by dissolving in water or an organic solvent, it is preferable to add it into the system as soon as possible after being dissolved, considering the stability of the hydantoin compound. The addition to the water system includes a method of impact addition in which a high concentration is added at regular intervals, a method of intermittent addition, or a method of continuously adding and keeping a constant concentration at all times, and is not particularly limited. It may be added so that the number of surviving microorganisms is kept below a certain amount and a level at which slime damage does not occur.
【0011】[0011]
【実施例】以下にこの発明を実施例によりさら詳細にに
説明するが、これにより本発明が限定されるものではな
い。 実施例1 製紙工場抄紙工程からの白水中に検出される代表菌種と
して、グラム陰性菌シュードモナス(Pseudomonas.s
p)、 及びグラム陽性菌バチルス(Bacillus.sp)を選
び、 それぞれTGY液体培地(pH=7.0)で32
℃、24時間前培養した。得られた培養液を滅菌水にて
100倍希釈しpH調製(pH=5、6、7、8、9)
した菌懸濁液を得た。。この懸濁液100mLを300
mL容三角フラスコに入れ、 所定濃度(10ppm)の
殺微生物剤を加え、 振とう器にて0.5時間接触させ
た。この後TGY寒天培地に接種し、32℃で3日間培
養し白水1mL当たりの生菌数を測定した。この結果を
比較例とともに表1に示した。ヒダントイン化合物は、
比較に用いた化合物に比べて、生菌数値が大幅に減少し
ているのがわかる。特に、pHの高いところで差が顕著
である。The present invention will be described in more detail with reference to the following examples, which should not be construed as limiting the invention. Example 1 As a representative bacterial species detected in white water from a papermaking process at a paper mill, a gram-negative bacterium Pseudomonas.
p), and Gram-positive bacterium Bacillus.sp, and 32 in TGY liquid medium (pH = 7.0), respectively.
Pre-culture was carried out at ℃ for 24 hours. The obtained culture solution is diluted 100 times with sterilized water to adjust the pH (pH = 5, 6, 7, 8, 9)
A bacterial suspension was obtained. . 100 mL of this suspension is added to 300
The mixture was placed in a mL Erlenmeyer flask, a predetermined concentration (10 ppm) of the microbicide was added, and the mixture was contacted with a shaker for 0.5 hours. After that, the cells were inoculated into TGY agar medium and cultured at 32 ° C. for 3 days, and the viable cell count per 1 mL of white water was measured. The results are shown in Table 1 together with the comparative example. Hydantoin compounds are
It can be seen that the viable cell count is significantly reduced compared to the compounds used for comparison. In particular, the difference is remarkable at high pH.
【0012】[0012]
【表1】 [Table 1]
【0013】実施例2 製紙工場のおける酸性抄紙用マシンの白水(pH=5.
4 生菌数:2×107個/mL)を、 300mL容三
角フラスコに100mLづつ採取し、それぞれの試料に
殺微生物剤を所定量(0.1、1、10、30、100
ppm)加え、振とう器にて0.5及び1時間接触させ
た。この後TGY寒天培地に接種し32℃で3日間培養
し、白水1mL当たりの生菌数を測定した。この結果を
比較例とともに表2に示した。ヒダントイン化合物は、
比較に用いた化合物に比べて生菌数値が大幅に減少して
いるのがわかる。Example 2 White water (pH = 5.
4 Viable cell count: 2 × 10 7 cells / mL) was collected in 300 mL Erlenmeyer flasks by 100 mL, and a predetermined amount (0.1, 1, 10, 30, 100) of the microbicide was added to each sample.
ppm) and contacted with a shaker for 0.5 and 1 hour. After that, it was inoculated into TGY agar medium and cultured at 32 ° C. for 3 days, and the viable cell count per 1 mL of white water was measured. The results are shown in Table 2 together with the comparative example. Hydantoin compounds are
It can be seen that the viable cell count is significantly reduced compared to the compounds used for comparison.
【0014】[0014]
【表2】 [Table 2]
【0015】実施例3 実施例2と同様にして、製紙工場におけるアルカリ性抄
紙用マシンの白水(pH=8.0 生菌数:1×109個
/mL)を用い試験を実施した。この結果を比較例とと
もに表3に示した。ヒダントイン化合物は、比較に用い
た化合物に比べて生菌数値が大幅に減少しているのがわ
かる。特に酸性抄紙用マシンの白水に比べてアルカリ性
抄紙用マシンの白水では比較例との差が顕著である。Example 3 In the same manner as in Example 2, a test was conducted using white water (pH = 8.0 viable cell count: 1 × 10 9 cells / mL) of an alkaline papermaking machine in a paper mill. The results are shown in Table 3 together with the comparative example. It can be seen that the hydantoin compound has a significantly reduced live cell count compared to the compound used for comparison. In particular, the white water of the alkaline papermaking machine is significantly different from the comparative example as compared with the white water of the acidic papermaking machine.
【0016】[0016]
【表3】 [Table 3]
【0017】[0017]
【発明の効果】本発明方法によれば、パルプ工場、 製紙
工場の工程水中に生育するスライム構成菌を殺滅、また
は生育阻害することにより、該工程に発生するスライム
障害を未然に防止することができる。工程水のpHが4
〜6の酸性側はもちろん、pHが6〜8にある高pH域
においても充分効果が発揮できる。EFFECTS OF THE INVENTION According to the method of the present invention, by preventing or inhibiting the growth of slime-constituting bacteria that grow in process water of pulp mills and paper mills, the slime disorder occurring in the process is prevented. You can PH of process water is 4
The effect can be sufficiently exerted not only on the acidic side of ~ 6 but also in the high pH range where the pH is 6-8.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 C02F 1/50 520 P 532 C D H C02F 1/50 540 D (71)出願人 594209382 グレート・レークス・ケミカル・コーポレ ーション Great Lakes Chemica l Corporation アメリカ合衆国インディアナ州47906,ウ エスト・ラファイエット,ノース・ウエス ト,ハイウェイ 52,ポスト・オフィス・ ボックス 2200 # Post Offi ce Box 2200,Highway 52 N.W.,West Lafayett e,Indiana 47906,Unite d States of America (72)発明者 高橋 秀樹 三重県四日市市別名6−6−9 伯東株式 会社四日市研究所内 (72)発明者 野畑 靖浩 三重県四日市市別名6−6−9 伯東株式 会社四日市研究所内 (72)発明者 リチャード・エレスモア イギリス国エレスミア・ポート,エル65・ 4ジーディー,サウス・ウィーラル,オイ ル・サイツ・ロード,ピー・オー・ボック ス44,グレート・レークス・ケミカル・コ ーポレーション内Continuation of the front page (51) Int.Cl. 6 Identification number Reference number within the agency FI Technical indication location C02F 1/50 520 P 532 C DH C02F 1/50 540 D (71) Applicant 594209382 Great Lakes Chemical Corporation Great Lakes Chemical Corporation 47,906, West Lafayette, North West, Highway 52, Post Office Box 2200 # Post Office Box 2200, Highway 52 N. W. , West Lafayette, Indiana 47906, Unite States of America (72) Inventor Hideki Takahashi Yokkaichi City, Mie Prefecture 6-6-9 Hakuto Co., Ltd. Yokkaichi Laboratory (72) Inventor Yasuhiro Nobata 6-Yokaichi, Mie Prefecture 6-9 Hakuto Co., Ltd. Yokkaichi Research Institute (72) Inventor Richard Ellesmore, Ellesmere Port of England, El 65.4 Geedie, South Wheelal, Oil Sites Road, Poo Boxes 44, Great Inside the Lakes Chemical Corporation
Claims (3)
一般式(I) (式中、R1及びR2は同一であっても異なっていてもよ
く、少なくとも一方は塩素、または臭素原子であり、他
方は水素原子、塩素原子または臭素原子を表し、R3及
びR4は同一であっても異なっていてもよく、それぞれ
水素原子または炭素数1〜12のアルキル基を表す。)
で表されるヒダントイン系化合物を添加してスライム構
成菌を殺滅または生育阻害することを特徴とするスライ
ム障害防止方法。1. The general formula (I) in process water in a pulp mill / paper mill. (In the formula, R 1 and R 2 may be the same or different, at least one is a chlorine or bromine atom, and the other is a hydrogen atom, a chlorine atom or a bromine atom, and R 3 and R 4 are May be the same or different and each represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms.)
A method for preventing slime disorders, which comprises adding a hydantoin compound represented by the formula (3) to kill or inhibit growth of slime-constituting bacteria.
出される白水である請求項1に記載のスライム障害防止
方法。2. The method for preventing slime disorders according to claim 1, wherein the process water is white water discharged from an alkaline paper machine.
塩素原子、他方が臭素原子であり、R3とR4がともにメ
チル基である請求項1または2に記載のスライム障害防
止方法。3. The slime obstacle according to claim 1, wherein one of R 1 and R 2 in the general formula (I) is a chlorine atom and the other is a bromine atom, and both R 3 and R 4 are methyl groups. Prevention method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32293994A JP3877788B2 (en) | 1994-12-26 | 1994-12-26 | Prevention of slime damage in pulp and paper mills |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32293994A JP3877788B2 (en) | 1994-12-26 | 1994-12-26 | Prevention of slime damage in pulp and paper mills |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08176996A true JPH08176996A (en) | 1996-07-09 |
JP3877788B2 JP3877788B2 (en) | 2007-02-07 |
Family
ID=18149326
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JP32293994A Expired - Fee Related JP3877788B2 (en) | 1994-12-26 | 1994-12-26 | Prevention of slime damage in pulp and paper mills |
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Cited By (11)
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---|---|---|---|---|
WO2000018689A1 (en) * | 1998-09-28 | 2000-04-06 | Ebara Corporation | Method and apparatus for disinfecting drainage |
WO2001055036A3 (en) * | 2000-01-31 | 2002-02-21 | Lonza Ag | Partially halogenated hydantoins in slime control |
JP2002242094A (en) * | 2001-02-19 | 2002-08-28 | Hakuto Co Ltd | Aqueous slurry of halogenated hydantoin compound |
WO2003037804A1 (en) * | 2001-10-30 | 2003-05-08 | Ge Betz, Inc. | Odor control method |
WO2004031481A1 (en) * | 2002-10-07 | 2004-04-15 | Alfred Pohlen | Additive and method for avoiding or at least reducing deposits in water bearing and/or contacting industrial systems |
WO2004044324A1 (en) * | 2002-11-12 | 2004-05-27 | Alfred Pohlen | Method for reducing deposits in water from pulp, paper or board making machines |
JP2006512197A (en) * | 2002-12-20 | 2006-04-13 | ロンザ インコーポレイテッド | Method for biofilm removal |
US7235169B2 (en) | 2001-12-28 | 2007-06-26 | Omega Co., Ltd. | Method and apparatus for purging and disinfecting water |
JP2008121167A (en) * | 2006-11-15 | 2008-05-29 | Kurita Water Ind Ltd | Method for preventing spot |
JP2009542713A (en) * | 2006-06-29 | 2009-12-03 | アルベマール・コーポレーシヨン | Biofilm control |
US8986606B2 (en) | 2008-05-23 | 2015-03-24 | Kemira Oyj | Chemistry for effective microbe control with reduced gas phase corrosiveness in pulp and paper processing systems |
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1994
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US6562244B1 (en) | 1998-09-28 | 2003-05-13 | Ebara Corporation | Method and apparatus for disinfecting drainage |
WO2000018689A1 (en) * | 1998-09-28 | 2000-04-06 | Ebara Corporation | Method and apparatus for disinfecting drainage |
KR100659252B1 (en) * | 1998-09-28 | 2006-12-18 | 가부시키가이샤 에바라 세이사꾸쇼 | Method and apparatus for disinfecting drainage |
WO2001055036A3 (en) * | 2000-01-31 | 2002-02-21 | Lonza Ag | Partially halogenated hydantoins in slime control |
US6429181B2 (en) | 2000-01-31 | 2002-08-06 | Lonza Inc. | Partially halogenated hydantoins in papermaking applications |
JP2002242094A (en) * | 2001-02-19 | 2002-08-28 | Hakuto Co Ltd | Aqueous slurry of halogenated hydantoin compound |
AU2002351484B2 (en) * | 2001-10-30 | 2008-05-01 | Ge Betz, Inc. | Odor control method |
WO2003037804A1 (en) * | 2001-10-30 | 2003-05-08 | Ge Betz, Inc. | Odor control method |
US7235169B2 (en) | 2001-12-28 | 2007-06-26 | Omega Co., Ltd. | Method and apparatus for purging and disinfecting water |
WO2004031481A1 (en) * | 2002-10-07 | 2004-04-15 | Alfred Pohlen | Additive and method for avoiding or at least reducing deposits in water bearing and/or contacting industrial systems |
WO2004044324A1 (en) * | 2002-11-12 | 2004-05-27 | Alfred Pohlen | Method for reducing deposits in water from pulp, paper or board making machines |
JP2006512197A (en) * | 2002-12-20 | 2006-04-13 | ロンザ インコーポレイテッド | Method for biofilm removal |
US7407590B2 (en) | 2002-12-20 | 2008-08-05 | Lonza, Inc. | Method for removal of biofilm |
JP2011251977A (en) * | 2002-12-20 | 2011-12-15 | Lonza Inc | Method for removal of biofilm |
JP2009542713A (en) * | 2006-06-29 | 2009-12-03 | アルベマール・コーポレーシヨン | Biofilm control |
JP2008121167A (en) * | 2006-11-15 | 2008-05-29 | Kurita Water Ind Ltd | Method for preventing spot |
US8986606B2 (en) | 2008-05-23 | 2015-03-24 | Kemira Oyj | Chemistry for effective microbe control with reduced gas phase corrosiveness in pulp and paper processing systems |
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