JP2017128598A - Method for controlling microorganisms in aqueous system - Google Patents
Method for controlling microorganisms in aqueous system Download PDFInfo
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- JP2017128598A JP2017128598A JP2017068251A JP2017068251A JP2017128598A JP 2017128598 A JP2017128598 A JP 2017128598A JP 2017068251 A JP2017068251 A JP 2017068251A JP 2017068251 A JP2017068251 A JP 2017068251A JP 2017128598 A JP2017128598 A JP 2017128598A
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- slime
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 244000005700 microbiome Species 0.000 title claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 54
- 150000003839 salts Chemical class 0.000 claims abstract description 24
- OGQPUOLFKIMRMF-UHFFFAOYSA-N chlorosulfamic acid Chemical compound OS(=O)(=O)NCl OGQPUOLFKIMRMF-UHFFFAOYSA-N 0.000 claims abstract description 16
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000007800 oxidant agent Substances 0.000 claims abstract description 14
- 239000000460 chlorine Substances 0.000 claims abstract description 13
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 13
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 11
- LVDKZNITIUWNER-UHFFFAOYSA-N Bronopol Chemical compound OCC(Br)(CO)[N+]([O-])=O LVDKZNITIUWNER-UHFFFAOYSA-N 0.000 claims abstract description 10
- UUIVKBHZENILKB-UHFFFAOYSA-N 2,2-dibromo-2-cyanoacetamide Chemical compound NC(=O)C(Br)(Br)C#N UUIVKBHZENILKB-UHFFFAOYSA-N 0.000 claims abstract description 9
- FMNZAHDAULEOSO-UHFFFAOYSA-N 2,2-dibromo-2-nitroethanol Chemical compound OCC(Br)(Br)[N+]([O-])=O FMNZAHDAULEOSO-UHFFFAOYSA-N 0.000 claims abstract description 8
- KTQVJAPIQPIIPF-IOBHVTPZSA-N (1Z,2Z)-N,N'-dihydroxyethanediimidoyl dichloride Chemical compound O\N=C(/Cl)\C(\Cl)=N\O KTQVJAPIQPIIPF-IOBHVTPZSA-N 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000003814 drug Substances 0.000 claims description 18
- 229940079593 drug Drugs 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 11
- 229940100555 2-methyl-4-isothiazolin-3-one Drugs 0.000 claims description 3
- MGIYRDNGCNKGJU-UHFFFAOYSA-N isothiazolinone Chemical compound O=C1C=CSN1 MGIYRDNGCNKGJU-UHFFFAOYSA-N 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 4
- 229940100484 5-chloro-2-methyl-4-isothiazolin-3-one Drugs 0.000 abstract description 2
- DHNRXBZYEKSXIM-UHFFFAOYSA-N chloromethylisothiazolinone Chemical compound CN1SC(Cl)=CC1=O DHNRXBZYEKSXIM-UHFFFAOYSA-N 0.000 abstract description 2
- 239000013043 chemical agent Substances 0.000 abstract 3
- 239000005708 Sodium hypochlorite Substances 0.000 description 11
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 11
- 229920001131 Pulp (paper) Polymers 0.000 description 8
- 239000007795 chemical reaction product Substances 0.000 description 8
- 230000006378 damage Effects 0.000 description 7
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 6
- SWLVFNYSXGMGBS-UHFFFAOYSA-N ammonium bromide Chemical compound [NH4+].[Br-] SWLVFNYSXGMGBS-UHFFFAOYSA-N 0.000 description 6
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 6
- 230000001590 oxidative effect Effects 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- 230000000844 anti-bacterial effect Effects 0.000 description 5
- 241000233866 Fungi Species 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- ZWLUXSQADUDCSB-UHFFFAOYSA-N phthalaldehyde Chemical compound O=CC1=CC=CC=C1C=O ZWLUXSQADUDCSB-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- QDWYPRSFEZRKDK-UHFFFAOYSA-M sodium;sulfamate Chemical compound [Na+].NS([O-])(=O)=O QDWYPRSFEZRKDK-UHFFFAOYSA-M 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 239000012085 test solution Substances 0.000 description 3
- YMVICGPFTOKTIL-UHFFFAOYSA-N 4,5-dichlorodithiolan-3-one Chemical compound ClC1SSC(=O)C1Cl YMVICGPFTOKTIL-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000010730 cutting oil Substances 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Chemical class 0.000 description 2
- 239000002184 metal Chemical class 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- PIEXCQIOSMOEOU-UHFFFAOYSA-N 1-bromo-3-chloro-5,5-dimethylimidazolidine-2,4-dione Chemical compound CC1(C)N(Br)C(=O)N(Cl)C1=O PIEXCQIOSMOEOU-UHFFFAOYSA-N 0.000 description 1
- WGHAPLWNJPAJDE-UHFFFAOYSA-N 2-(2-bromoacetyl)oxyethyl 2-bromoacetate Chemical class BrCC(=O)OCCOC(=O)CBr WGHAPLWNJPAJDE-UHFFFAOYSA-N 0.000 description 1
- GCAXGCSCRRVVLF-UHFFFAOYSA-N 3,3,4,4-tetrachlorothiolane 1,1-dioxide Chemical compound ClC1(Cl)CS(=O)(=O)CC1(Cl)Cl GCAXGCSCRRVVLF-UHFFFAOYSA-N 0.000 description 1
- PORQOHRXAJJKGK-UHFFFAOYSA-N 4,5-dichloro-2-n-octyl-3(2H)-isothiazolone Chemical compound CCCCCCCCN1SC(Cl)=C(Cl)C1=O PORQOHRXAJJKGK-UHFFFAOYSA-N 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- GEHMBYLTCISYNY-UHFFFAOYSA-N Ammonium sulfamate Chemical compound [NH4+].NS([O-])(=O)=O GEHMBYLTCISYNY-UHFFFAOYSA-N 0.000 description 1
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical compound ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241000589323 Methylobacterium Species 0.000 description 1
- 241000589309 Methylobacterium sp. Species 0.000 description 1
- HTHTVIQSIHEHAZ-UHFFFAOYSA-N S1SCC=C1.BrC(CO)([N+](=O)[O-])Br Chemical compound S1SCC=C1.BrC(CO)([N+](=O)[O-])Br HTHTVIQSIHEHAZ-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- SIHKVAXULDBIIY-UPHRSURJSA-N [(z)-4-(2-bromoacetyl)oxybut-2-enyl] 2-bromoacetate Chemical class BrCC(=O)OC\C=C/COC(=O)CBr SIHKVAXULDBIIY-UPHRSURJSA-N 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- DMSMPAJRVJJAGA-UHFFFAOYSA-N benzo[d]isothiazol-3-one Chemical compound C1=CC=C2C(=O)NSC2=C1 DMSMPAJRVJJAGA-UHFFFAOYSA-N 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- FNXLCIKXHOPCKH-UHFFFAOYSA-N bromamine Chemical compound BrN FNXLCIKXHOPCKH-UHFFFAOYSA-N 0.000 description 1
- VWPXUKSDWYXLKV-UHFFFAOYSA-N bromosulfamic acid Chemical compound OS(=O)(=O)NBr VWPXUKSDWYXLKV-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- SDUXGMLGPOQMKO-UHFFFAOYSA-N dichlorosulfamic acid Chemical compound OS(=O)(=O)N(Cl)Cl SDUXGMLGPOQMKO-UHFFFAOYSA-N 0.000 description 1
- 238000003113 dilution method Methods 0.000 description 1
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 150000004662 dithiols Chemical class 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000003966 growth inhibitor Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- WRUGWIBCXHJTDG-UHFFFAOYSA-L magnesium sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Mg+2].[O-]S([O-])(=O)=O WRUGWIBCXHJTDG-UHFFFAOYSA-L 0.000 description 1
- 229940061634 magnesium sulfate heptahydrate Drugs 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- BEGLCMHJXHIJLR-UHFFFAOYSA-N methylisothiazolinone Chemical class CN1SC=CC1=O BEGLCMHJXHIJLR-UHFFFAOYSA-N 0.000 description 1
- IDIHGPQXDCVGFL-UHFFFAOYSA-N methylphosphanium;sulfate Chemical compound [PH3+]C.[PH3+]C.[O-]S([O-])(=O)=O IDIHGPQXDCVGFL-UHFFFAOYSA-N 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 239000001254 oxidized starch Substances 0.000 description 1
- 235000013808 oxidized starch Nutrition 0.000 description 1
- 239000008363 phosphate buffer Substances 0.000 description 1
- 239000008055 phosphate buffer solution Substances 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Abstract
Description
本発明は、水系の微生物抑制方法に関する。 The present invention relates to a water-based microorganism control method.
各種工場のプラント冷却水系、紙パルプ水系、廃水処理水系、鉄鋼水系、切削油水系等では、細菌、糸状菌、藻類等から構成されるスライムが系内に発生し、熱効率の低下、通水配管の閉塞、配管金属材質の腐食等のスライム障害を引き起こす原因となる。 In plant cooling water systems, paper pulp water systems, wastewater treatment water systems, steel water systems, cutting oil water systems, etc. at various factories, slime composed of bacteria, filamentous fungi, algae, etc. is generated in the system, resulting in reduced thermal efficiency, water piping Cause slime troubles such as blockage of pipes and corrosion of pipe metal materials.
そこで、このようなスライム障害を回避するための薬剤が開発されている。特許文献１には、塩素系酸化剤、及びスルファミン酸又はその塩の組み合わせからなるスライム剥離剤が開示され、特許文献２には、臭化アンモニウム及び次亜塩素酸ナトリウムの反応物からなる薬剤が開示されている。 Therefore, drugs for avoiding such slime disorders have been developed. Patent Document 1 discloses a slime release agent composed of a combination of a chlorine-based oxidizing agent and sulfamic acid or a salt thereof, and Patent Document 2 discloses an agent composed of a reaction product of ammonium bromide and sodium hypochlorite. It is disclosed.
しかし、従来の薬剤よりも更に優れた微生物抑制技術が求められている。例えば、特許文献１に示されるスライム剥離剤は、スライムを剥離して設備表面を洗浄する機能に優れるものの、殺菌効果が不十分である。また、特許文献２に示される薬剤では、一旦スライムが形成されてしまうと、十分な殺菌ができない場合がある。 However, there is a need for a microbial control technique that is superior to conventional drugs. For example, the slime remover disclosed in Patent Document 1 has an excellent function of peeling the slime and cleaning the equipment surface, but has an insufficient bactericidal effect. Moreover, with the chemical | medical agent shown by patent document 2, once slime is formed, sufficient sterilization may be unable to be performed.
本発明は、以上の実情に鑑みてなされてものであり、水系の微生物を効率的に抑制することができる方法を提供することである。 The present invention has been made in view of the above circumstances, and is to provide a method capable of efficiently suppressing aqueous microorganisms.
（１）本発明は、製紙設備の水系において、塩素系酸化剤、及びスルファミン酸もしくはその塩の組み合わせ、又はクロロスルファミン酸もしくはその塩から選択される１種又は２種以上の薬剤を添加し、前記薬剤を添加した後、２，２−ジブロモ−２−ニトロエタノール、２−ブロモ−２−ニトロ−１，３−プロパンジオール、２，２−ジブロモ−３−ニトリロプロピオンアミド、ジクロログリオキシム、５−クロロ−２−メチル−４−イソチアゾリン−３−オンから選択される１種又は２種以上のスライムコントロール剤を添加する、水系の微生物抑制方法である。 (1) In the water system of the papermaking facility, the present invention comprises adding one or more kinds of agents selected from a chlorine-based oxidizing agent and a combination of sulfamic acid or a salt thereof, or chlorosulfamic acid or a salt thereof, After adding the drug, 2,2-dibromo-2-nitroethanol, 2-bromo-2-nitro-1,3-propanediol, 2,2-dibromo-3-nitrilopropionamide, dichloroglyoxime, 5 An aqueous microorganism control method in which one or more slime control agents selected from -chloro-2-methyl-4-isothiazolin-3-one are added.
（２）また、本発明は、塩素系酸化剤、及びスルファミン酸もしくはその塩の組み合わせ、又はクロロスルファミン酸もしくはその塩から選択される１種又は２種以上の薬剤と、２，２−ジブロモ−２−ニトロエタノール、２−ブロモ−２−ニトロ−１，３−プロパンジオール、２，２−ジブロモ−３−ニトリロプロピオンアミド、ジクロログリオキシム、５−クロロ−２−メチル−４−イソチアゾリン−３−オンから選択される１種又は２種以上のスライムコントロール剤と、を併用し、製紙設備の水系において、前記薬剤をパルプ貯留部に添加し、前記スライムコントロール剤を抄紙系に添加する工程を有する水系の微生物抑制方法である。 (2) The present invention also relates to a chlorinated oxidant and a combination of sulfamic acid or a salt thereof, or one or more drugs selected from chlorosulfamic acid or a salt thereof, and 2,2-dibromo- 2-nitroethanol, 2-bromo-2-nitro-1,3-propanediol, 2,2-dibromo-3-nitrilopropionamide, dichloroglyoxime, 5-chloro-2-methyl-4-isothiazoline-3- 1 or 2 or more types of slime control agents selected from ON, and in the aqueous system of the papermaking equipment, the agent is added to the pulp reservoir, and the slime control agent is added to the papermaking system. This is an aqueous microorganism control method.
本発明によれば、塩素系酸化剤、及びスルファミン酸もしくはその塩の組み合わせ、又はクロロスルファミン酸もしくはその塩からなる薬剤と、無機系又は有機系のスライムコントロール剤と、を併用することで、水系の微生物を効率的に抑制することができる。 According to the present invention, a combination of a chlorine-based oxidizing agent and a sulfamic acid or a salt thereof, or an agent composed of chlorosulfamic acid or a salt thereof, and an inorganic or organic slime control agent, The microorganisms can be efficiently suppressed.
以下、本発明の実施形態を説明するが、これらに本発明が限定されるものではない。 Hereinafter, although embodiment of this invention is described, this invention is not limited to these.
本発明に係る水系の微生物抑制方法は、所定薬剤及びスライムコントロール剤を併用することで、水系の微生物を効率的に抑制するものである。 The water-based microorganism suppression method according to the present invention efficiently suppresses water-based microorganisms by using a predetermined drug and a slime control agent in combination.
スライムコントロール剤は、無機系又は有機系のいずれであってもよく、殺菌作用を呈することで、水系での微生物を抑制する。かかる機能を有するスライムコントロール剤自体は、従来公知であり、幅広く使用することができる。無機系又は有機系のスライムコントロール剤は、いずれかのみを用いてもよく、双方を用いてもよい。 The slime control agent may be either inorganic or organic, and suppresses microorganisms in the aqueous system by exhibiting a bactericidal action. The slime control agent itself having such a function is conventionally known and can be widely used. Only one or both of the inorganic or organic slime control agents may be used.
無機系のスライムコントロール剤としては、特に限定されないが、クロラミン、ブロマミン、臭化アンモニウムと次亜塩素酸ナトリウムとの反応物、硫酸アンモニウムと次亜塩素酸塩との反応物、ブロモスルファミン酸等の１種又は２種以上であってよい。なお、臭化アンモニウムと次亜塩素酸ナトリウムとの反応物は、特許文献２に開示されている。 The inorganic slime control agent is not particularly limited, but 1 such as chloramine, bromamine, a reaction product of ammonium bromide and sodium hypochlorite, a reaction product of ammonium sulfate and hypochlorite, bromosulfamic acid, etc. It may be a seed or two or more. A reaction product of ammonium bromide and sodium hypochlorite is disclosed in Patent Document 2.
有機系のスライムコントロール剤としては、特に限定されないが、２，２−ジブロモ−３−ニトリロプロピオンアミド（ＤＢＮＰＡ）、２，２−ジブロモ−２−ニトロエタノール（ＤＢＮＥ）、２−ブロモ−２−ニトロ−１，３−プロパンジオール（ＢＮＰ）、オルソフタルアルデヒド（ＯＰＡ）、グルタールアルデヒド、４，５−ジクロロ−１，２−ジチオラン−３オン（ジチオール）、１，４−ビス（ブロモアセトキシ）−２−ブテン、１，２−ビス（ブロモアセトキシ）エタン、２−メチル−４−イソチアゾリン−３−オン又はその金属塩、５−クロロ−２−メチル−４−イソチアゾリン−３−オン又はその金属塩、４，５−ジクロロ−２−オクチル−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、メチレンビスチオシアネート、ヘキサブロモジメチルスルホン、３，３，４，４−テトラクロロテトラヒドロチオフェン−１，１−ジオキシド、ジクロログリオキシム、１−ブロモ−３−クロロ−５，５−ジメチルヒダントイン、テトラキス−ヒドロキシメチル−ホスホニウム−サルフェート等の１種又は２種以上が挙げられる。 The organic slime control agent is not particularly limited, but 2,2-dibromo-3-nitrilopropionamide (DBNPA), 2,2-dibromo-2-nitroethanol (DBNE), 2-bromo-2-nitro -1,3-propanediol (BNP), orthophthalaldehyde (OPA), glutaraldehyde, 4,5-dichloro-1,2-dithiolane-3-one (dithiol), 1,4-bis (bromoacetoxy)- 2-butene, 1,2-bis (bromoacetoxy) ethane, 2-methyl-4-isothiazolin-3-one or a metal salt thereof, 5-chloro-2-methyl-4-isothiazolin-3-one or a metal salt thereof 4,5-dichloro-2-octyl-4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, methyl Bisthiocyanate, hexabromodimethylsulfone, 3,3,4,4-tetrachlorotetrahydrothiophene-1,1-dioxide, dichloroglyoxime, 1-bromo-3-chloro-5,5-dimethylhydantoin, tetrakis-hydroxy 1 type, or 2 or more types, such as methyl- phosphonium sulfate, are mentioned.
本発明者らは、無機系又は有機系のスライムコントロール剤が、殺菌作用に優れる一方、一旦スライム（微生物のフロック）が形成されてしまうと、スライム内部の微生物を十分に殺菌することができないことに着目した。そこで、本発明では、スライムコントロール剤とともに、所定の薬剤を用いる。 The inventors of the present invention are that the inorganic or organic slime control agent is excellent in bactericidal action, but once the slime (microbe floc) is formed, the microorganisms inside the slime cannot be sufficiently sterilized. Focused on. Therefore, in the present invention, a predetermined drug is used together with the slime control agent.
本発明で用いる薬剤は、塩素系酸化剤、及びスルファミン酸もしくはその塩の組み合わせ、又はクロロスルファミン酸もしくはその塩からなる。これらは、スライムの形成を抑制するとともに、たとえスライムが形成されても、スライム中の微生物を囲む粘着成分を分解する機能に優れる。これにより、併用されたスライムコントロール剤が、粘着成分に阻害されずに微生物を殺菌しやすくなるため、微生物抑制の効率が向上すると推測される。なお、上記組み合わせと、クロロスルファミン酸とは、いずれか一方を用いてもよく、双方を用いてもよい。 The chemical | medical agent used by this invention consists of a chlorine-type oxidizing agent and the combination of sulfamic acid or its salt, or chlorosulfamic acid or its salt. These suppress the formation of slime and are excellent in the function of decomposing the adhesive component surrounding the microorganism in the slime even if the slime is formed. Thereby, since the combined slime control agent becomes easy to sterilize microorganisms, without being inhibited by the adhesion component, it is estimated that the efficiency of microorganism suppression improves. In addition, either the said combination and chlorosulfamic acid may be used, and both may be used.
塩素系酸化剤、及びスルファミン酸もしくはその塩の組み合わせは、特許文献１に開示されたものであってもよい。具体的に、塩素系酸化剤は、塩素系の酸化剤であれば特に限定されず、コスト、取扱性、安全性、水に対する溶解度等の面から、好ましくは次亜塩素酸又はその塩、更に好ましくは次亜塩素酸ナトリウムである。次亜塩素酸ナトリウムとしては、一般に流通している１２％次亜塩素酸ナトリウムを用いることができる。 The combination of a chlorine-based oxidizing agent and sulfamic acid or a salt thereof may be disclosed in Patent Document 1. Specifically, the chlorine-based oxidant is not particularly limited as long as it is a chlorine-based oxidant. From the viewpoint of cost, handleability, safety, solubility in water, and the like, hypochlorous acid or a salt thereof is preferable. Sodium hypochlorite is preferable. As sodium hypochlorite, 12% sodium hypochlorite which is generally available can be used.
スルファミン酸又はその塩は、特に限定されず、例えば、スルファミン酸、スルファミン酸アンモニウム等であってよい。スルファミン酸はヒドラジンのように有毒ではなく、安全性が高い。 The sulfamic acid or a salt thereof is not particularly limited, and may be, for example, sulfamic acid, ammonium sulfamate, or the like. Sulfamic acid is not toxic like hydrazine and is highly safe.
塩素系酸化剤の有効塩素と、スルファミン酸及びその塩の含有割合は、モル比で（塩素系酸化剤の有効塩素）：（スルファミン酸及びその塩）が２：１〜１：５、好ましくは２：１〜１：２であるのが望ましい。塩素系酸化剤の有効塩素とは、ＪＩＳ Ｋ０１０１に準拠した残留塩素測定方法によって測定される塩素である。 The effective chlorine content of the chlorinated oxidant and the content ratio of the sulfamic acid and its salt are in the molar ratio (effective chlorinated oxidant) :( sulfamic acid and its salt) from 2: 1 to 1: 5, preferably It is desirable that the ratio is 2: 1 to 1: 2. The effective chlorine of the chlorinated oxidant is chlorine measured by a residual chlorine measuring method based on JIS K0101.
上記組み合わせには、より保存安定性を向上する観点で、水酸化ナトリウムや水酸化カリウム等のアルカリも含まれることが好ましい。 It is preferable that alkalis, such as sodium hydroxide and potassium hydroxide, are also contained in the said combination from a viewpoint of improving storage stability more.
クロロスルファミン酸又はその塩は、特に限定されず、Ｎ−クロロスルファミン酸、Ｎ，Ｎ−ジクロロスルファミン酸の１種以上、又はそれらの１種以上の塩等であってよい。 Chlorosulfamic acid or a salt thereof is not particularly limited, and may be one or more of N-chlorosulfamic acid, N, N-dichlorosulfamic acid, or one or more salts thereof.
薬剤及びスライムコントロール剤の上記機能から、薬剤の添加は、スライムコントロール剤の添加と同時又はそれより前に行うことが好ましい。これにより、スライム形成の抑制又は粘着物質の分解が先行してなされるため、スライムコントロール剤の殺菌作用が速やかに奏されやすい。ただし、薬剤の添加がスライムコントロール剤の添加より後であってもよい。 From the above functions of the drug and the slime control agent, the drug is preferably added simultaneously with or before the addition of the slime control agent. Thereby, since suppression of slime formation or decomposition | disassembly of an adhesive substance is made | formed previously, the bactericidal action of a slime control agent is easy to be show | played quickly. However, the addition of the drug may be after the addition of the slime control agent.
添加について前、同時、後とは、時間的なものに限られず、場所的なものも包含する。例えば、薬剤の添加がスライムコントロールの添加より前に行われることは、薬剤の添加開始後にスライムコントロールの添加を開始する（時間的）態様のみならず、薬剤の添加個所がスライムコントロール剤の添加個所よりも水系の上流である（場所的）態様も包含する。 Before, simultaneously with, and after addition is not limited to time, but also includes place. For example, if the addition of the drug is performed before the addition of the slime control, the addition of the slime control is not limited to the (time) mode in which the addition of the slime control is started after the start of the addition of the drug. In addition, a (spatial) embodiment that is upstream of the water system is also included.
薬剤及びスライムコントロール剤の添加個所は、特に限定されない。もっとも、本発明の方法は、スライム障害が検知された個所に、薬剤及びスライムコントロール剤を添加する工程を有することが好ましい。これにより、スライム障害を直接的かつ効率的に解消することができる。従来の方法では、スライム障害が生じた個所に製剤を添加しても、スライムに阻害されて効率的に障害を除去することが困難であったが、本発明では効率的な障害除去が可能である。なお、スライム障害の検知は、常法に沿って行えばよい。 The addition part of a chemical | medical agent and a slime control agent is not specifically limited. But it is preferable that the method of this invention has the process of adding a chemical | medical agent and a slime control agent in the location where the slime disorder | damage | failure was detected. Thereby, a slime failure can be eliminated directly and efficiently. In the conventional method, even if a formulation is added to a place where slime damage has occurred, it is difficult to remove the damage efficiently due to inhibition by the slime. is there. In addition, what is necessary is just to perform the detection of a slime failure along a conventional method.
スライム障害が生じやすい個所が特定できている場合、スライム障害が生じやすい個所又はその上流に薬剤を添加し、スライム障害が生じやすい個所にスライムコントロール剤を添加することが好ましい。これにより、スライム障害を効率的に予防することができる。 When a place where a slime disorder is likely to occur can be identified, it is preferable to add a drug to a place where the slime disorder is likely to occur or upstream thereof, and to add a slime control agent to a place where the slime disorder is likely to occur. Thereby, slime failure can be prevented efficiently.
本発明の方法は、製紙設備の水系において、薬剤をパルプ貯留部に添加し、スライムコントロール剤を抄紙系に添加する工程を有することも好ましい。パルプ貯留部は富栄養状態にあり、スライムが形成されやすいが、ここに薬剤が添加されることでスライム形成が抑制され、その下流（抄紙系を含む）へのスライムの流入が低減する。その結果、抄紙系のスライムコントロール剤が効果的に作用し、微生物を抑制することができる。なお、製紙設備の水系における薬剤及びスライムコントロール剤の添加個所は、これに限られない。 The method of the present invention preferably includes a step of adding a chemical to the pulp storage unit and adding a slime control agent to the papermaking system in the water system of the papermaking facility. The pulp reservoir is in a eutrophic state, and slime is likely to be formed. However, the addition of a chemical to the pulp storage part suppresses slime formation and reduces the inflow of slime downstream (including the papermaking system). As a result, the papermaking slime control agent acts effectively and can suppress microorganisms. In addition, the addition part of the chemical | medical agent and slime control agent in the water system of papermaking facilities is not restricted to this.
薬剤及びスライムコントロール剤の添加量は、特に限定されず、それぞれ０．２〜５００ｍｇ／Ｌであってよい。スライムコントロール剤に対する薬剤の添加量比も特に限定されず、９９／１〜５／９５（質量比）であってよい。また、スライム障害の程度等の状況に応じて、添加量を適宜変更してもよい。例えば、スライム障害の程度が増した場合、スライムコントロール剤の添加量又は比率を上げても、効率的に殺菌作用が奏されないので、薬剤の添加量又は比率を上げる制御を行ってよい。なお、添加量比は、一定時間内での添加量の比率を指す。 The addition amount of a chemical | medical agent and a slime control agent is not specifically limited, Each may be 0.2-500 mg / L. The addition ratio of the drug to the slime control agent is not particularly limited, and may be 99/1 to 5/95 (mass ratio). Moreover, you may change the addition amount suitably according to conditions, such as a grade of a slime disorder | damage | failure. For example, when the degree of slime injury is increased, even if the addition amount or ratio of the slime control agent is increased, the bactericidal action is not efficiently achieved, so control for increasing the addition amount or ratio of the drug may be performed. The addition amount ratio refers to the ratio of the addition amount within a certain time.
薬剤及びスライムコントロール剤の添加のしかたも特に限定されず、別々に添加してもよく、混合させた後に添加してもよい。薬剤及びスライムコントロール剤の少なくとも一方の添加を、連続的に行ってもよく、間欠的に行ってもよい。なお、薬剤及びスライムコントロール剤は、定量性の観点から、予め濃度調製された溶液（例えば水溶液）の形態であることが好ましい。 The method of adding the drug and the slime control agent is not particularly limited, and may be added separately or after mixing. The addition of at least one of the drug and the slime control agent may be performed continuously or intermittently. In addition, it is preferable that a chemical | medical agent and a slime control agent are the form of the solution (for example, aqueous solution) by which the density | concentration preparation was carried out from a quantitative viewpoint.
本発明の方法が適用される水系は、微生物による障害が生じ得る水系であれば、特に限定されず、各種工場のプラント冷却水系、紙パルプ水系、廃水処理水系、鉄鋼水系、切削油水系等であってよい。 The water system to which the method of the present invention is applied is not particularly limited as long as it can cause damage by microorganisms, such as plant cooling water system of various factories, paper pulp water system, waste water treatment water system, steel water system, cutting oil water system, etc. It may be.
また、本発明の方法では、必要に応じ、殺生物剤、増殖抑制剤、腐食防止剤、銅用防食剤、スケール防止剤、消泡剤、界面活性剤等を更に用いてもよい。 In the method of the present invention, if necessary, a biocide, a growth inhibitor, a corrosion inhibitor, a copper anticorrosive, a scale inhibitor, an antifoaming agent, a surfactant and the like may be further used.
＜実施例１＞
内径３ｍｍの塩化ビニル製チューブを３５℃恒温水槽に通して保温し、そこに培地を８ｍＬ／分の量で通した。グルコース２ｇ、硫酸アンモニウム０．３５ｇ、リン酸水素二カリウム０．７ｇ、リン酸二水素カリウム０．３ｇ、硫酸マグネシウム７水塩０．０５ｇを、脱塩素した水道水１０Ｌに溶解させた。この溶液に、ｐＨ７の０．５Ｍリン酸緩衝液１００ｍＬ、菌として、塗工原紙白水を標準培地で培養し１０６／ｍＬ以上の菌数になるよう植菌したものを、上記培地として用いた。チューブの途中にＹ字管を設けて、表１に示す製剤を添加することができるようにし、４時間添加及び４時間休止のサイクルで製剤を添加した。
<Example 1>
A polyvinyl chloride tube having an inner diameter of 3 mm was passed through a constant temperature water bath at 35 ° C., and the medium was passed through the tube at an amount of 8 mL / min. 2 g of glucose, 0.35 g of ammonium sulfate, 0.7 g of dipotassium hydrogen phosphate, 0.3 g of potassium dihydrogen phosphate and 0.05 g of magnesium sulfate heptahydrate were dissolved in 10 L of dechlorinated tap water. To this solution, 100 mL of a 0.5 M phosphate buffer solution having a pH of 7 and cultured as a fungus was coated white paper water in a standard medium and inoculated so that the number of bacteria was 10 6 / mL or more. . A Y-tube was provided in the middle of the tube so that the preparation shown in Table 1 could be added, and the preparation was added in a cycle of addition for 4 hours and rest for 4 hours.
７日後にチューブを取り出して割り、チューブ１０ｃｍ長に付着したスライムを綿棒でふき取り、１ｍＬの滅菌水に分散させ、分散液のＡＴＰ量を測定した。この結果を表１に示す。なお、ＡＴＰ量は菌数に比例することが知られている。 Seven days later, the tube was taken out and split, and the slime adhering to the 10 cm length of the tube was wiped off with a cotton swab and dispersed in 1 mL of sterilized water, and the amount of ATP in the dispersion was measured. The results are shown in Table 1. It is known that the amount of ATP is proportional to the number of bacteria.
ＤＢＮＥ：２,２−ジブロモ−２−ニトロエタノール
ジチオール:４,５−ジクロロ−１,２−ジチオラン−３−オン
ＯＰＡ:オルトフタルアルデヒド
表１に示されるように、クロロスルファミン酸及びスライムコントロール剤を併用した実施例１〜３では、その一方のみを用いた比較例に比べ、添加総量が低いにもかかわらず、ＡＴＰ量、つまり菌数を顕著に低減でき、スライム付着抑制を効率的に行えたことが分かった。 As shown in Table 1, in Examples 1 to 3 in which chlorosulfamic acid and a slime control agent were used in combination, the amount of ATP, that is, the fungus, was lower compared to the comparative example using only one of them, although the total amount added was low. It was found that the number could be remarkably reduced and slime adhesion was effectively suppressed.
＜実施例２＞
塗工原紙を抄造するマシンに発生したピンクスライム（ピンク色を呈するスライムで、紙に移るとピンク色の斑点を生じる）から分離したピンクスライム原因菌Ｍｅｔｈｉｌｏｂａｃｔｅｒｉｕｍ ｓｐ．（メチロバクテリウム スピーシーズ）を、標準液体培地で３０℃、２日間に亘り培養し、ピンク色の微生物フロックを得た。このフロックを滅菌水で洗浄し、スターラーで砕いて微細フロックを得た。この微細フロックをｐＨ７の１／１５０Ｍリン酸緩衝液に分散させ、試験液を得た。この試験液に、表２に示す製剤を添加し、３０℃で２時間振とうした後、直ちに亜硫酸を２００ｍｇ／Ｌ添加して、製剤を分解させた。その後、試験液を、滅菌したホモジナイザに入れ、１００００ｒｐｍで３分間に亘って処理し、菌体を分散させた。分散した菌体の数を寒天平板希釈法で測定した結果を表２に示す。
<Example 2>
A pink slime-causing bacterium, Methylobacterium sp., Isolated from a pink slime generated in a machine for making a coated base paper (a pink-colored slime that produces pink spots when transferred to paper). (Methylobacterium species) was cultured in a standard liquid medium at 30 ° C. for 2 days to obtain a pink microbial floc. The floc was washed with sterilized water and crushed with a stirrer to obtain a fine floc. This fine floc was dispersed in a 1 / 150M phosphate buffer having a pH of 7 to obtain a test solution. The formulations shown in Table 2 were added to this test solution, and after shaking at 30 ° C. for 2 hours, 200 mg / L of sulfurous acid was immediately added to decompose the formulation. Thereafter, the test solution was placed in a sterilized homogenizer and treated at 10,000 rpm for 3 minutes to disperse the cells. Table 2 shows the results of measuring the number of dispersed cells by the agar plate dilution method.
反応物Ａ:臭化アンモニウム水溶液と次亜塩素酸ナトリウム水溶液とを混合したもの
ＤＣＧ:ジクロログリオキシム
表２に示されるように、クロロスルファミン酸をスライムコントロール剤と併用した実施例では、その一方のみを用いた比較例に比べ、菌数を顕著に低減でき、殺菌を効率的に行えたことが分かった。 As shown in Table 2, in the examples in which chlorosulfamic acid was used in combination with the slime control agent, the number of bacteria could be remarkably reduced and sterilization could be efficiently performed compared to the comparative example using only one of them. I understood.
＜実施例３＞
バージンパルプ（ＬＢＫＰ）及び脱墨パルプ（ＤＩＰ）を配合して、塗工原紙を抄造するマシンでは、脱墨パルプの腐敗を原因とするスライム障害が顕著であった。そこで、臭化アンモニウム水溶液と次亜塩素酸ナトリウム水溶液との反応物を、脱墨パルプのチェストに２ｍｇ／Ｌ（ａｓ Ｃｌ２対保有水量）で８回／日、抄紙系に２ｍｇ／Ｌ（ａｓ Ｃｌ２）で１０分間保持するように３回／日、それぞれ添加した。すると、添加開始後には改善が見られたものの、２週間後から白水サイロにスライムが付着し始め、３週間後にはスライムが原因と見られる斑点が紙に発生し始めた。
<Example 3>
In a machine that forms a coated base paper by blending virgin pulp (LBKP) and deinked pulp (DIP), slime damage due to decay of the deinked pulp was significant. Therefore, a reaction product of an aqueous solution of ammonium bromide and an aqueous solution of sodium hypochlorite was added to a deinked pulp chest at 2 mg / L (as Cl2 vs. retained water) 8 times / day, and 2 mg / L (as Cl2) in the papermaking system. ) And added 3 times / day to hold for 10 minutes. Then, although improvement was seen after the start of addition, slime began to adhere to the white water silo after 2 weeks, and after 3 weeks, spots that seemed to be caused by slime began to appear on the paper.
次に、脱墨パルプのチェストに、スルファミン酸ナトリウムと次亜塩素酸ナトリウムとの反応物を２ｍｇ／Ｌ（ａｓ Ｃｌ２対保有水量）４回／日、抄紙系に臭化アンモニウムと次亜塩素酸ナトリウム水溶液との反応物を２ｍｇ／Ｌ（ａｓ Ｃｌ２）で１０分間保持するように３回／日、それぞれ添加した。すると、白水サイロでのスライム生成は３週間以上に亘って抑えられ、紙での斑点の発生も大幅に低減した。 Next, in the deinked pulp chest, the reaction product of sodium sulfamate and sodium hypochlorite is 2 mg / L (as Cl2 vs. retained water) 4 times / day, and ammonium bromide and hypochlorous acid are used in the papermaking system. The reaction with aqueous sodium was added 3 times / day, respectively, to hold at 2 mg / L (as Cl2) for 10 minutes. Then, slime generation in the white water silo was suppressed for over 3 weeks, and the occurrence of speckles on the paper was greatly reduced.
なお、スルファミン酸ナトリウムと次亜塩素酸ナトリウムとの反応物を脱墨パルプに２ｍｇ／Ｌ（ａｓ Ｃｌ２対保有水量）、抄紙系に５ｍｇ／Ｌ（ａｓ Ｃｌ２）で３０分間保持するように３回／日でそれぞれ添加しても、２週間後にはスライムが付着し始めた。 It should be noted that the reaction product of sodium sulfamate and sodium hypochlorite was held 3 times so that the deinked pulp was maintained at 2 mg / L (as Cl2 vs. retained water) and at 5 mg / L (as Cl2) for 30 minutes in the papermaking system. Even after each addition, slime began to adhere after 2 weeks.
これにより、製紙設備の水系において、スルファミン酸ナトリウム及び次亜塩素酸ナトリウムの組み合わせをパルプ貯留部に添加し、スライムコントロール剤を抄紙系に添加することで、添加総量が小さくても、効率的にスライムをコントロールできることが分かった。 As a result, in the water system of papermaking equipment, a combination of sodium sulfamate and sodium hypochlorite is added to the pulp reservoir, and the slime control agent is added to the papermaking system, so that even if the total amount added is small, it can be efficiently It turns out that slime can be controlled.
＜実施例４＞
酸化デンプンを糊化し、表面サイズ剤として塗工する系において、糊化後の糊液にＢＮＰを２０ｍｇ／Ｌの量で連続して添加し、塗工する循環系にＢＮＰを５０ｍｇ／Ｌ（対流入糊液量）で２時間、３回追加して添加する処理を行った。しかし、５日経過すると、腐敗が進行し、ｐＨが６．５から５．５に低下し、腐敗生成物による発泡が始まった。そこで、循環系に添加するＢＮＰに代えて、クロロスルファミン酸を５ｍｇ／Ｌ（対流入糊液量）で４時間、３回添加したところ、ｐＨが徐々に上昇し、１日後に６．５まで回復し、発泡が収まった。
<Example 4>
In a system in which oxidized starch is gelatinized and applied as a surface sizing agent, BNP is continuously added to the paste liquid after gelatinization in an amount of 20 mg / L, and BNP is added to the circulating system to be applied at 50 mg / L Inflow paste amount) was added for 2 hours and 3 times. However, after 5 days, rot progressed, the pH dropped from 6.5 to 5.5, and foaming by the rot product began. Therefore, instead of BNP added to the circulatory system, chlorosulfamic acid was added 3 times for 4 hours at 5 mg / L (the amount of inflow paste), and the pH gradually increased until 6.5 days later. It recovered and the foam was settled.
これにより、クロロスルファミン酸と、スライムコントロール剤を併用することで、添加総量が低いにもかかわらず、効率的に防腐効果が得られることが分かった。これは、系内に付着したスライムにクロロスルファミン酸が作用し、菌体外ポリマー（粘着成分）を分解した結果、元より添加されているスライムコントロール剤が菌に直接作用して防腐効果を発揮したことによると考えられる。 Thus, it was found that by using chlorosulfamic acid in combination with a slime control agent, an antiseptic effect can be obtained efficiently even though the total amount added is low. This is because chlorosulfamic acid acts on slime adhering to the system and decomposes the extracellular polymer (adhesive component). As a result, the added slime control agent acts directly on the fungus and exerts an antiseptic effect. This is probably due to the fact that
Claims (2)
塩素系酸化剤、及びスルファミン酸もしくはその塩の組み合わせ、又はクロロスルファミン酸もしくはその塩から選択される１種又は２種以上の薬剤を添加し、
前記薬剤を添加した後、２，２−ジブロモ−２−ニトロエタノール、２−ブロモ−２−ニトロ−１，３−プロパンジオール、２，２−ジブロモ−３−ニトリロプロピオンアミド、ジクロログリオキシム、５−クロロ−２−メチル−４−イソチアゾリン−３−オンから選択される１種又は２種以上のスライムコントロール剤を添加する、水系の微生物抑制方法。 In the water system of papermaking equipment,
Adding one or more agents selected from a chlorine-based oxidizing agent and a combination of sulfamic acid or a salt thereof, or chlorosulfamic acid or a salt thereof;
After adding the drug, 2,2-dibromo-2-nitroethanol, 2-bromo-2-nitro-1,3-propanediol, 2,2-dibromo-3-nitrilopropionamide, dichloroglyoxime, 5 A water-based microorganism control method in which one or more slime control agents selected from -chloro-2-methyl-4-isothiazolin-3-one are added.
２，２−ジブロモ−２−ニトロエタノール、２−ブロモ−２−ニトロ−１，３−プロパンジオール、２，２−ジブロモ−３−ニトリロプロピオンアミド、ジクロログリオキシム、５−クロロ−２−メチル−４−イソチアゾリン−３−オンから選択される１種又は２種以上のスライムコントロール剤と、を併用し、
製紙設備の水系において、前記薬剤をパルプ貯留部に添加し、前記スライムコントロール剤を抄紙系に添加する工程を有する水系の微生物抑制方法。 One or more drugs selected from a combination of a chlorine-based oxidizing agent and sulfamic acid or a salt thereof, or chlorosulfamic acid or a salt thereof;
2,2-dibromo-2-nitroethanol, 2-bromo-2-nitro-1,3-propanediol, 2,2-dibromo-3-nitrilopropionamide, dichloroglyoxime, 5-chloro-2-methyl- One or more slime control agents selected from 4-isothiazolin-3-one,
An aqueous microorganism control method comprising a step of adding the chemical to a pulp reservoir and adding the slime control agent to a papermaking system in an aqueous system of a papermaking facility.
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| JPH11255610A (en) * | 1997-11-03 | 1999-09-21 | Nalco Chem Co | Stabilized sodium hypobromate, growth inhibitor of microorganism including isothiazolone and inhibitation |
| JP2001047059A (en) * | 1999-08-11 | 2001-02-20 | Kurita Water Ind Ltd | Slime control method and slime control agent |
| JP2009195822A (en) * | 2008-02-21 | 2009-09-03 | Kurita Water Ind Ltd | Method for sterilizing water system |
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