CA2157916C - Methode de nettoyage et d'entreetien de reseaux de canalisations de distribution d'eau potable - Google Patents
Methode de nettoyage et d'entreetien de reseaux de canalisations de distribution d'eau potable Download PDFInfo
- Publication number
- CA2157916C CA2157916C CA002157916A CA2157916A CA2157916C CA 2157916 C CA2157916 C CA 2157916C CA 002157916 A CA002157916 A CA 002157916A CA 2157916 A CA2157916 A CA 2157916A CA 2157916 C CA2157916 C CA 2157916C
- Authority
- CA
- Canada
- Prior art keywords
- scale
- acid
- pipe
- cleaning solution
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 46
- 238000009826 distribution Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000003651 drinking water Substances 0.000 title claims abstract description 15
- 235000012206 bottled water Nutrition 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000013049 sediment Substances 0.000 claims abstract description 27
- 230000002378 acidificating effect Effects 0.000 claims abstract description 14
- 238000011010 flushing procedure Methods 0.000 claims abstract description 6
- 239000002253 acid Substances 0.000 claims description 29
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 15
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims description 14
- 239000000344 soap Substances 0.000 claims description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 9
- 239000011707 mineral Substances 0.000 claims description 9
- 150000007524 organic acids Chemical class 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910021529 ammonia Inorganic materials 0.000 claims description 8
- 235000005985 organic acids Nutrition 0.000 claims description 7
- 239000002028 Biomass Substances 0.000 claims description 5
- 241000295146 Gallionellaceae Species 0.000 claims description 5
- 239000003112 inhibitor Substances 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000002738 chelating agent Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 150000007522 mineralic acids Chemical class 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 239000008235 industrial water Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 235000020188 drinking water Nutrition 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 description 48
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 11
- 150000007513 acids Chemical class 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 229960004275 glycolic acid Drugs 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 4
- -1 hydrochloric Chemical class 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 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
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000009533 lab test Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000005711 Benzoic acid Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 235000010233 benzoic acid Nutrition 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 229940048842 sodium xylenesulfonate Drugs 0.000 description 2
- QUCDWLYKDRVKMI-UHFFFAOYSA-M sodium;3,4-dimethylbenzenesulfonate Chemical compound [Na+].CC1=CC=C(S([O-])(=O)=O)C=C1C QUCDWLYKDRVKMI-UHFFFAOYSA-M 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical class OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- ZZXDRXVIRVJQBT-UHFFFAOYSA-M Xylenesulfonate Chemical compound CC1=CC=CC(S([O-])(=O)=O)=C1C ZZXDRXVIRVJQBT-UHFFFAOYSA-M 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical group 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000003352 sequestering agent Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 229940071104 xylenesulfonate Drugs 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
- C11D7/08—Acids
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/265—Carboxylic acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3218—Alkanolamines or alkanolimines
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/006—Arrangements or methods for cleaning or refurbishing water conduits
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Inorganic Chemistry (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Emergency Medicine (AREA)
- Cleaning In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Detergent Compositions (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
L'invention se rapporte à un procédé pour nettoyer et entretenir des systèmes de distribution d'eau potable qui ont un débit réduit à cause d'une augmentation des dépôts de tartre, des sédiments et similaires sur la surface intérieure de la conduite. A cet effet, une solution de nettoyage acide aqueuse (12) est introduite et mise en circulation dans la conduite (25) à traiter, pendant une période suffisante pour dissoudre et détacher le tartre et les sédiments, et la solution usée contenant le tartre et les sédiments dissous ou en suspension est évacuée par rinçage de la conduite (25), pour produire une conduite propre avec un meilleur écoulement de l'eau. Il est également souhaitable de rincer le système de conduite de distribution d'eau avec de l'eau sous haute pression après le traitement pour enlever le tartre et les sédiments détachés qu'il n'a pas été possible de faire partir pendant la mise en circulation et l'évacuation par rinçage de la solution traitante (12).
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/036,188 US5360488A (en) | 1993-03-23 | 1993-03-23 | Method of cleaning and maintaining water distribution pipe systems |
| US036,188 | 1993-03-23 | ||
| US20995394A | 1994-03-17 | 1994-03-17 | |
| US209,953 | 1994-03-17 | ||
| PCT/US1994/003065 WO1994021865A1 (fr) | 1993-03-23 | 1994-03-22 | Procede pour le nettoyage et l'entretien de systemes de conduites de distribution d'eau potable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2157916A1 CA2157916A1 (fr) | 1994-09-29 |
| CA2157916C true CA2157916C (fr) | 2000-01-25 |
Family
ID=26712917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002157916A Expired - Fee Related CA2157916C (fr) | 1993-03-23 | 1994-03-22 | Methode de nettoyage et d'entreetien de reseaux de canalisations de distribution d'eau potable |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0690944B1 (fr) |
| JP (1) | JP3597193B2 (fr) |
| AT (1) | ATE170583T1 (fr) |
| AU (1) | AU673426B2 (fr) |
| BR (1) | BR9406139A (fr) |
| CA (1) | CA2157916C (fr) |
| DE (1) | DE69413017T2 (fr) |
| WO (1) | WO1994021865A1 (fr) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0766765A1 (fr) * | 1994-06-20 | 1997-04-09 | H.E.R.C. Products Incorporated | Procede de nettoyage et d'entretien de systemes de conduites de distribution d'eau potable au moyen d'une solution de nettoyage chauffee |
| US5755155A (en) * | 1997-02-28 | 1998-05-26 | Tetra Laval Holdings & Finance S.A. | Aseptic process interface group |
| JPH11141713A (ja) * | 1997-09-05 | 1999-05-28 | Tetra Laval Holdings & Finance Sa | 無菌弁組立体 |
| JP2002052322A (ja) * | 2000-08-10 | 2002-02-19 | Kurita Water Ind Ltd | 洗浄方法 |
| JP4283098B2 (ja) * | 2003-12-04 | 2009-06-24 | 花王株式会社 | 金属成分の処理液 |
| JP5200326B2 (ja) * | 2006-03-30 | 2013-06-05 | 栗田工業株式会社 | スケール洗浄剤及びスケール除去方法 |
| WO2016068525A1 (fr) * | 2014-10-27 | 2016-05-06 | 이기원 | Procédé pour enlever des incrustations |
| RU2594426C1 (ru) * | 2015-02-26 | 2016-08-20 | Акционерное общество "Научно-исследовательский и проектный институт по переработке газа" (АО "НИПИгазпереработка") | Способ очистки внутренней поверхности технологического оборудования и трубопроводов (варианты) |
| CA2969174A1 (fr) | 2017-06-02 | 2018-12-02 | Fluid Energy Group Ltd. | Compositions d'acide modifie novatrices comme remplacements des acides conventionnels dans l'industrie du petrole et du gaz |
| DE202019003089U1 (de) * | 2019-07-24 | 2020-10-27 | Josef Schallameier | Entkalkung von unter Druck stehenden Rohrleitungen beliebiger Länge |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3667487A (en) * | 1970-12-11 | 1972-06-06 | Richardson Chem Cleaning Servi | Integrated chemical cleaning apparatus |
| US4025359A (en) * | 1974-04-01 | 1977-05-24 | Connelly Jr George F | Inhibited acid composition for cleaning water systems |
| DE3066305D1 (en) * | 1979-10-24 | 1984-03-01 | Fischer Ag Georg | Method and apparatus for rinsing, cleaning, disinfecting and coating a conduit on the interior, especially a water conduit in a new construction |
| DE3244443C2 (de) * | 1982-12-01 | 1986-11-06 | Späne, Rainer, 7888 Rheinfelden | Verfahren zur Entfernung von eisen-, calcium- und manganhaltigen Verockerungen und/oder Versinterungen aus zur Wasserversorgung betriebenen Einrichtungen |
| DE3583586D1 (de) * | 1984-11-30 | 1991-08-29 | Feldmann Chemie Gmbh | Verwendung von mischung aus organischen und/oder anorganischen saeuren und/oder sauren salzen zur entfernung von eisen- und manganhaltigen ablagerungen und verockerungen. |
| FR2602571B1 (fr) * | 1986-08-06 | 1989-02-03 | Assainissement Rationnel Pompa | Procede de nettoyage d'une conduite notamment d'un reseau de distribution d'eau potable et systeme pour la mise en oeuvre de ce procede |
| DE3631459A1 (de) * | 1986-09-16 | 1988-03-24 | Wegener Paul | Verfahren zum innenreinigen von verzweigten rohrleitungen und/oder aggregaten sowie vorrichtung zur durchfuehrung dieses verfahrens |
| DE3731441A1 (de) * | 1987-08-13 | 1989-02-23 | Imhof Elisabeth | Verfahren und vorrichtung zur reinigung, korrosionsbeseitigung, ggf. entkalkung und versiegelung von gebaeudewasserinstallationen |
| DE3828229A1 (de) * | 1988-08-19 | 1990-02-22 | Feldmann Chemie Gmbh | Mittel zur reinigung, desinfektion und wartung von trinkwasseranlagen und anlagen der getraenkeindustrie |
| DE4015201A1 (de) * | 1990-05-11 | 1991-11-14 | Heimo Wessollek | Reiniger fuer trinkwasseranlagen |
| DE4015202A1 (de) * | 1990-05-11 | 1991-11-14 | Heimo Wessollek | Reiniger fuer trinkwasseranlagen |
| US5322635A (en) * | 1991-05-16 | 1994-06-21 | H.E.R.C. Incorporated | Soap compositions of carboxylic acids and amines useful in removal and prevention of scale |
| DE4125315C2 (de) * | 1991-07-31 | 1995-09-28 | Oertzen Arndt H Gmbh & Co | Vorrichtung zum Reinigen von Rohrleitungen |
-
1994
- 1994-03-22 DE DE69413017T patent/DE69413017T2/de not_active Expired - Fee Related
- 1994-03-22 WO PCT/US1994/003065 patent/WO1994021865A1/fr active IP Right Grant
- 1994-03-22 AT AT94912283T patent/ATE170583T1/de active
- 1994-03-22 JP JP52131394A patent/JP3597193B2/ja not_active Expired - Fee Related
- 1994-03-22 EP EP94912283A patent/EP0690944B1/fr not_active Expired - Lifetime
- 1994-03-22 BR BR9406139A patent/BR9406139A/pt not_active IP Right Cessation
- 1994-03-22 AU AU64903/94A patent/AU673426B2/en not_active Ceased
- 1994-03-22 CA CA002157916A patent/CA2157916C/fr not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ATE170583T1 (de) | 1998-09-15 |
| JPH08509908A (ja) | 1996-10-22 |
| EP0690944A1 (fr) | 1996-01-10 |
| AU673426B2 (en) | 1996-11-07 |
| DE69413017D1 (de) | 1998-10-08 |
| JP3597193B2 (ja) | 2004-12-02 |
| AU6490394A (en) | 1994-10-11 |
| WO1994021865A1 (fr) | 1994-09-29 |
| CA2157916A1 (fr) | 1994-09-29 |
| EP0690944B1 (fr) | 1998-09-02 |
| DE69413017T2 (de) | 1999-01-28 |
| BR9406139A (pt) | 1996-01-30 |
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