EP1339636A1 - Procede de generation du dioxyde de chlore - Google Patents
Procede de generation du dioxyde de chloreInfo
- Publication number
- EP1339636A1 EP1339636A1 EP01980620A EP01980620A EP1339636A1 EP 1339636 A1 EP1339636 A1 EP 1339636A1 EP 01980620 A EP01980620 A EP 01980620A EP 01980620 A EP01980620 A EP 01980620A EP 1339636 A1 EP1339636 A1 EP 1339636A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- acid
- chlorine dioxide
- ams
- chlorite
- solution
- 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.)
- Withdrawn
Links
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000004155 Chlorine dioxide Substances 0.000 title claims abstract description 28
- 235000019398 chlorine dioxide Nutrition 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000002253 acid Substances 0.000 claims abstract description 34
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910001919 chlorite Inorganic materials 0.000 claims abstract description 12
- 229910052619 chlorite group Inorganic materials 0.000 claims abstract description 12
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 150000007513 acids Chemical class 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 claims description 8
- 229960002218 sodium chlorite Drugs 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 230000035484 reaction time Effects 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 229940098779 methanesulfonic acid Drugs 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 28
- 239000000243 solution Substances 0.000 description 22
- 238000012360 testing method Methods 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 230000003115 biocidal effect Effects 0.000 description 7
- 238000011282 treatment Methods 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 150000001805 chlorine compounds Chemical class 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000010790 dilution Methods 0.000 description 5
- 239000012895 dilution Substances 0.000 description 5
- 230000002779 inactivation Effects 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 244000052616 bacterial pathogen Species 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- WECIKJKLCDCIMY-UHFFFAOYSA-N 2-chloro-n-(2-cyanoethyl)acetamide Chemical compound ClCC(=O)NCCC#N WECIKJKLCDCIMY-UHFFFAOYSA-N 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241000272201 Columbiformes Species 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- YUUVAZCKXDQEIS-UHFFFAOYSA-N azanium;chlorite Chemical compound [NH4+].[O-]Cl=O YUUVAZCKXDQEIS-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- QXIKMJLSPJFYOI-UHFFFAOYSA-L calcium;dichlorite Chemical compound [Ca+2].[O-]Cl=O.[O-]Cl=O QXIKMJLSPJFYOI-UHFFFAOYSA-L 0.000 description 1
- 210000004534 cecum Anatomy 0.000 description 1
- -1 chlorite ions Chemical class 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- VISKNDGJUCDNMS-UHFFFAOYSA-M potassium;chlorite Chemical compound [K+].[O-]Cl=O VISKNDGJUCDNMS-UHFFFAOYSA-M 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/02—Oxides of chlorine
- C01B11/022—Chlorine dioxide (ClO2)
- C01B11/023—Preparation from chlorites or chlorates
- C01B11/024—Preparation from chlorites or chlorates from chlorites
Definitions
- the invention relates to chlorine dioxide and more particularly relates to its preparation from chlorites with a view to its use in all applications of disinfection, cleaning and oxidation of pollutants.
- chlorine dioxide Due to its oxidizing and biocidal properties, chlorine dioxide is widely used for the treatment of drinking water, water from cooling circuits and water from equipment in contact with foodstuffs. It is also used for the washing treatment of gaseous effluents (elimination of odors and VOCs), for the disinfection of storage and transport facilities for drinking water, as well as for the elimination of pollutants (dyes , sulfides, mercaptans, etc.) in industrial waters or, in the petroleum sector, for desulfurization.
- chlorine dioxide is a toxic gas, difficult to handle, non-storable at high concentration and explosive in mixture with air, it is generally prepared at the time of its use in dilute solution.
- the most used consists of reacting an acid with a chlorite, in particular sodium chlorite.
- the most commonly used acid is hydrochloric acid because it leads to a very high chlorine dioxide yield. Indeed, for an HCl / NaCIO 2 molar ratio of 2.2, the yield of chlorine dioxide following the reaction:
- hydrochloric acid provides a considerable amount of chlorides which cause corrosion of the installations (cooling circuits, pipes, exchangers, etc.).
- AMS considerably reduces the amount of chlorides present in the chlorine dioxide solution compared to hydrochloric acid.
- AMS has other advantages, including the following:
- AMS can be directly substituted for hydrochloric acid without changing the generator. Indeed, AMS is available in a 70% aqueous solution and is easier to handle (non-volatile, odorless, stable).
- AMS is easily biodegradable (100% in 28 days), non-viscous and does not evaporate.
- AMS is approved for cleaning equipment in contact with foodstuffs. 4. Unlike chlorite and hydrochloric acid, there is no possible confusion between AMS and sodium chlorite because the names of the products are very different. This is important from a security point of view.
- the subject of the invention is therefore a process for generating chlorine dioxide by reaction of a chlorite with an acid, characterized in that the acid used is an alkanesulfonic acid, linear or branched, containing from 1 to 12 carbon atoms , or a mixture of such acids.
- alkanesulfonic acids can be mentioned, ethanesulfonic, propanesulfonic, butanesulfonic and octranesulfonic acids.
- the chlorite used to generate the chlorine dioxide is preferably sodium chlorite, but it would not be departing from the scope of the present invention to use any chlorite provided that the counterion of the chlorite is not an activator decomposition of chlorine dioxide.
- such chlorites include ammonium chlorite, potassium chlorite and calcium chlorite.
- the reaction for generating chlorine dioxide is generally carried out in an aqueous medium at chlorine dioxide concentrations of 0.001 to 10%, preferably between 0.1 and 3%.
- the acid / chlorite molar ratio can range from 0.1 to 50, but is preferably between 1 and 10.
- the temperature and the reaction pressure are not critical parameters and can vary within wide limits.
- the temperature is generally between 3 and 120 ° C, preferably between 15 and 40 ° C.
- the pressure can range from 1 to 20 bars, but it is preferable to work at atmospheric pressure or at a pressure of up to 7 bars.
- reaction time can range from 1 minute to 8 hours. It is preferably between 10 and 50 minutes.
- the invention aims to completely replace hydrochloric acid, it would not be departing from the scope of the present invention to use a mixture of alkanesulfonic acid with up to 10% hydrochloric acid or another acid.
- the mixture was diluted with moderately mineralized city water (pH 7.7) at a flow rate of 10 l / h.
- the amount of NaCIO 2 used was 962 mg / l and, based on equation (2), should lead to a theoretical production of CIO 2 equal to 573 mg / l.
- the concentration of CIO 2 in the solution obtained after dilution with tap water being 495 mg / l, the generator yield was 86%.
- Example 1 was repeated, but replacing the aqueous AMS solution at 264 g / l with an aqueous HCl solution at 102 g / l or by an aqueous AMS solution at 537 g / l.
- the contact time in the reactor being 15 minutes and the flow rate of each reagent being 174 ml / h, a total flow rate of 19.46 l / h was obtained after dilution with city water.
- the CIO 2 solutions generated in this example were stored in transparent glass vials, placed in daylight. The concentration of CIO 2 was monitored over 15 days in order to evaluate the decomposition of the solution.
- the acid concentration of the other solutions was chosen so as to have an acid / NaClO 2 molar ratio equal to 2.2.
- Example 1 was reproduced, but by varying the flow rate of the reactants and therefore the residence time in the reactor.
- Bacti-Count T samplers which are representative of total germs and allow a count between 10 3 and 10 7 bacteria per milliliter. A blank was previously made to know the concentration of bacteria in the water leaving the treatment plant.
- Chlorine dioxide solutions were prepared in situ by directly mixing aqueous solutions of AMS and sodium chlorite.
- the plates were then immersed for 24 hours, at 60 ° C. and with stirring by magnetic bar, in one liter of a solution of 0.103 mol / 1 of acid in demineralized water, this solution being placed in a reactor topped a refrigerant.
- the aluminum wafers were treated as described in 8.1.
- the XC18 steel plates were treated as follows: degreasing with trichlorethylene, polishing with 400 and 600 paper, rinsing and drying with compressed air. After testing, the XC18 steel plates were immersed in a 10% HCl solution with a few drops of corrosion inhibitor (Norust CM 150 from CECA), then rubbed with a rubberized tip to remove rust, rinsed with water and dried with compressed air.
- corrosion inhibitor Norust CM 150 from CECA
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0015678 | 2000-12-04 | ||
| FR0015678A FR2817545B1 (fr) | 2000-12-04 | 2000-12-04 | Procede de generation du dioxyde de chlore |
| PCT/FR2001/003271 WO2002046095A1 (fr) | 2000-12-04 | 2001-10-22 | Procede de generation du dioxyde de chlore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1339636A1 true EP1339636A1 (fr) | 2003-09-03 |
Family
ID=8857199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01980620A Withdrawn EP1339636A1 (fr) | 2000-12-04 | 2001-10-22 | Procede de generation du dioxyde de chlore |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20040033190A1 (fr) |
| EP (1) | EP1339636A1 (fr) |
| JP (1) | JP2004515435A (fr) |
| CA (1) | CA2430633A1 (fr) |
| FR (1) | FR2817545B1 (fr) |
| WO (1) | WO2002046095A1 (fr) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8668779B2 (en) * | 2002-04-30 | 2014-03-11 | Nalco Company | Method of simultaneously cleaning and disinfecting industrial water systems |
| US7252096B2 (en) * | 2003-04-08 | 2007-08-07 | Nalco Company | Methods of simultaneously cleaning and disinfecting industrial water systems |
| EP3164359A4 (fr) * | 2014-07-01 | 2018-01-03 | Adva Bar-On | Systèmes et procédés permettant la libération de dioxyde de chlore |
| US20180170752A1 (en) * | 2015-08-17 | 2018-06-21 | Baker Hughes, A Ge Company, Llc | In-situ generation of chlorine dioxide using methanesulfonic acid for remediation of scale and sulfide |
| FR3070694B1 (fr) | 2017-09-01 | 2020-07-03 | Arkema France | Inhibiteurs de corrosion metallique |
| WO2020090539A1 (fr) * | 2018-10-29 | 2020-05-07 | 大幸薬品株式会社 | Générateur de dioxyde de chlore |
| US12324432B2 (en) | 2019-04-12 | 2025-06-10 | Ecolab Usa Inc. | Hard surface cleaning solution with rapid viricidal activity |
| DE102019117728B4 (de) | 2019-07-01 | 2021-11-25 | Prominent Gmbh | Verfahren und Vorrichtung zur Erzeugung von Chlordioxid |
| WO2021002262A1 (fr) * | 2019-07-02 | 2021-01-07 | 大幸薬品株式会社 | Dispositif de génération de dioxyde de chlore et procédé de génération de dioxyde de chlore |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US651996A (en) * | 1899-09-20 | 1900-06-19 | Sarah Octavia Hubbard | Iron-rest. |
| IT1036712B (it) * | 1975-07-16 | 1979-10-30 | Conforto Gaetano | Procedimento ed apparecchiatura per la produzione di biossido di cloro a mezzo di una soluzione di clorito sodico e resina catio nica a ciclo acido |
| US4084747A (en) * | 1976-03-26 | 1978-04-18 | Howard Alliger | Germ killing composition and method |
| US4891216A (en) * | 1987-04-14 | 1990-01-02 | Alcide Corporation | Disinfecting compositions and methods therefor |
| JPH02104509A (ja) * | 1988-10-12 | 1990-04-17 | Daicel Chem Ind Ltd | 水性殺菌組成物 |
| CN1023205C (zh) * | 1989-06-23 | 1993-12-22 | 栾和林 | 二氧化氯的制备方法及控制盒 |
| US4981216A (en) * | 1990-01-31 | 1991-01-01 | Sonoco Products Co. | Easy opening bag pack and supporting rack system and fabricating method |
| US5380518A (en) * | 1992-03-04 | 1995-01-10 | Arco Research Co., Inc. | Method for the production of chlorine dioxide |
| US5407656A (en) * | 1992-03-04 | 1995-04-18 | Arco Research Co., Inc. | Method and compositions for the production of chlorine dioxide |
| US6046243A (en) * | 1993-02-12 | 2000-04-04 | Bernard Technologies, Inc. | Compositions for sustained release of a gas |
| US6749869B1 (en) * | 1997-09-26 | 2004-06-15 | Ecolab | Acidic aqueous chlorite teat dip providing shelf life, sanitizing capacity and tissue protection |
-
2000
- 2000-12-04 FR FR0015678A patent/FR2817545B1/fr not_active Expired - Fee Related
-
2001
- 2001-10-22 CA CA002430633A patent/CA2430633A1/fr not_active Abandoned
- 2001-10-22 JP JP2002547839A patent/JP2004515435A/ja not_active Withdrawn
- 2001-10-22 EP EP01980620A patent/EP1339636A1/fr not_active Withdrawn
- 2001-10-22 US US10/432,993 patent/US20040033190A1/en not_active Abandoned
- 2001-10-22 WO PCT/FR2001/003271 patent/WO2002046095A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0246095A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004515435A (ja) | 2004-05-27 |
| WO2002046095A1 (fr) | 2002-06-13 |
| FR2817545A1 (fr) | 2002-06-07 |
| FR2817545B1 (fr) | 2003-01-03 |
| CA2430633A1 (fr) | 2002-06-13 |
| US20040033190A1 (en) | 2004-02-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0250459B1 (fr) | Compositions desinfectantes et procede de desinfection applicables a des liquides ou des surfaces infectes | |
| TWI597235B (zh) | Production method of hypobromous acid stabilized composition, hypobromous acid stabilized composition, and slime inhibition method of separation membrane | |
| KR100567235B1 (ko) | 안정화된하이포아브롬산염의제조방법및미생물오염을조절하기위한수처리에서의그의사용방법 | |
| CN107108277B (zh) | 分离膜的黏质抑制方法 | |
| WO1997034827A1 (fr) | Hypobromite stabilise alcalin ou de metal alcalino-terreux et son procede de preparation | |
| FR2464229A1 (fr) | Procede et compositions pour la desinfection de milieux aqueux | |
| US4935153A (en) | Method for the control of biofouling in recirculating water systems | |
| KR101497285B1 (ko) | 상승작용성 살생물제 및 미생물 성장 억제를 위한 방법 | |
| EP1339636A1 (fr) | Procede de generation du dioxyde de chlore | |
| FR2662333A1 (fr) | Agent ayant une activite bacteriostatique et bactericide. | |
| CH631141A5 (fr) | Procede de desinfection de l'eau. | |
| US20060003028A1 (en) | Stable oxidizing bromine composition, method of manufacture and use thereof for biofouling control | |
| EP0411111A1 (fr) | Compose d'ammonium, composition le contenant et procede de desinfection. | |
| JP5281465B2 (ja) | 殺菌殺藻剤組成物、水系の殺菌殺藻方法および殺菌殺藻剤組成物の製造方法 | |
| JP7498580B2 (ja) | 殺菌剤、殺菌剤の製造方法、殺菌方法、分離膜用スライム抑制剤、および分離膜のスライム抑制方法 | |
| US20100221361A1 (en) | Stable oxidizing bromine composition, method of manufacture and use thereof for biofouling control | |
| JP2005161254A (ja) | 水系のスライム付着防止方法 | |
| JP2019100781A (ja) | 次亜臭素酸またはその塩および安定化次亜臭素酸組成物の濃度測定方法 | |
| FR2835702A1 (fr) | Composition desinfectante caracterisee en ce qu'elle consiste de ou comprend un melange d'eau de javel et de monophosphate de sodium | |
| CN1189808A (zh) | 稳定的碱金属或碱土金属次溴酸盐及其制备方法 | |
| JP2022107978A (ja) | 逆浸透膜の洗浄方法および逆浸透膜の洗浄装置 | |
| WO2001081251A1 (fr) | Composition aqueuse a base de dioxyde de chlore | |
| JPS62110705A (ja) | 逆浸透装置の殺菌法 | |
| CH593211A5 (fr) | ||
| FR2708627A1 (fr) | Procédé et produits pour éliminer les dépôts de manganèse et de fer dans les réservoirs et conduites d'eau. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20030519 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SUTY, HERVE Inventor name: MEKARBANE, PIERRE |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ARKEMA |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20040811 |