AU732672B2 - Hydrogen sulfide analyzer - Google Patents
Hydrogen sulfide analyzer Download PDFInfo
- Publication number
- AU732672B2 AU732672B2 AU10857/99A AU1085799A AU732672B2 AU 732672 B2 AU732672 B2 AU 732672B2 AU 10857/99 A AU10857/99 A AU 10857/99A AU 1085799 A AU1085799 A AU 1085799A AU 732672 B2 AU732672 B2 AU 732672B2
- Authority
- AU
- Australia
- Prior art keywords
- analyzer
- gas
- hydrogen sulfide
- sample
- waste stream
- 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.)
- Ceased
Links
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims description 38
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims description 38
- 239000007789 gas Substances 0.000 claims description 73
- 239000000523 sample Substances 0.000 claims description 49
- 239000000126 substance Substances 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 29
- 239000002699 waste material Substances 0.000 claims description 29
- 239000002351 wastewater Substances 0.000 claims description 24
- 238000010926 purge Methods 0.000 claims description 14
- 238000013019 agitation Methods 0.000 claims description 13
- 238000011282 treatment Methods 0.000 claims description 9
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims 15
- 238000007599 discharging Methods 0.000 claims 2
- 238000005070 sampling Methods 0.000 claims 2
- 239000000243 solution Substances 0.000 description 15
- 238000004140 cleaning Methods 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000007787 solid Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000002572 peristaltic effect Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 239000003039 volatile agent Substances 0.000 description 2
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 1
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical compound ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- PXQLVRUNWNTZOS-UHFFFAOYSA-N sulfanyl Chemical compound [SH] PXQLVRUNWNTZOS-UHFFFAOYSA-N 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D11/00—Control of flow ratio
- G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
- G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
- G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
- G01N1/2035—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials by deviating part of a fluid stream, e.g. by drawing-off or tapping
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0044—Sulphides, e.g. H2S
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
- G01N33/182—Specific anions in water
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/11—Automated chemical analysis
- Y10T436/115831—Condition or time responsive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/11—Automated chemical analysis
- Y10T436/117497—Automated chemical analysis with a continuously flowing sample or carrier stream
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/11—Automated chemical analysis
- Y10T436/117497—Automated chemical analysis with a continuously flowing sample or carrier stream
- Y10T436/118339—Automated chemical analysis with a continuously flowing sample or carrier stream with formation of a segmented stream
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/18—Sulfur containing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/18—Sulfur containing
- Y10T436/182—Organic or sulfhydryl containing [e.g., mercaptan, hydrogen, sulfide, etc.]
- Y10T436/184—Only hydrogen sulfide
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
- Y10T436/25375—Liberation or purification of sample or separation of material from a sample [e.g., filtering, centrifuging, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
- Y10T436/25875—Gaseous sample or with change of physical state
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Hydrology & Water Resources (AREA)
- Automation & Control Theory (AREA)
- Sampling And Sample Adjustment (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US6218897P | 1997-10-16 | 1997-10-16 | |
| US60/062188 | 1997-10-16 | ||
| US09/170535 | 1998-10-13 | ||
| US09/170,535 US5981289A (en) | 1997-10-16 | 1998-10-13 | Hydrogen sulfide analyzer |
| PCT/US1998/021695 WO1999019726A1 (en) | 1997-10-16 | 1998-10-15 | Hydrogen sulfide analyzer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU1085799A AU1085799A (en) | 1999-05-03 |
| AU732672B2 true AU732672B2 (en) | 2001-04-26 |
Family
ID=26741965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU10857/99A Ceased AU732672B2 (en) | 1997-10-16 | 1998-10-15 | Hydrogen sulfide analyzer |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5981289A (enExample) |
| EP (1) | EP1023596A4 (enExample) |
| JP (1) | JP3875488B2 (enExample) |
| AU (1) | AU732672B2 (enExample) |
| WO (1) | WO1999019726A1 (enExample) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6653150B1 (en) * | 1996-11-13 | 2003-11-25 | The Administrators Of The Tulane Educational Fund | Automatic mixing and dilution methods for online characterization of equilibrium and non-equilibrium properties of solutions containing polymers and/or colloids |
| FR2784091B1 (fr) * | 1998-09-11 | 2000-11-10 | Commissariat Energie Atomique | Procede pour confiner le plutonium dans des ceramiques apatitiques et produits obtenus par ce procede |
| US6485688B1 (en) * | 2000-04-24 | 2002-11-26 | General Electric Company | On-line sparging sampling and monitoring systems and methods |
| ES2199689B1 (es) * | 2002-08-06 | 2005-04-01 | Cespa Gestion De Residuos, S.A. | Dispositivo para controlar la produccion de gases en un reactor. |
| EP1455184A1 (en) * | 2003-03-07 | 2004-09-08 | Ultrasonic Scientific Limited | Ultrasonic analyser |
| US7273561B1 (en) * | 2003-10-21 | 2007-09-25 | Waitaki Research Corporation | Method for determining the chemical dosage required to reduce sulfides in wastewater to acceptable levels |
| US7422909B2 (en) * | 2004-02-02 | 2008-09-09 | Acme Technologies, Inc | Harsh environment gas sensor apparatus and method |
| US8469682B2 (en) * | 2005-08-05 | 2013-06-25 | Molon Motor And Coil Corporation | Peristaltic pump with torque relief |
| US20090092507A1 (en) * | 2005-08-05 | 2009-04-09 | Ramirez Jr Emilio A | Fluid pump systems |
| US8585379B2 (en) * | 2005-08-05 | 2013-11-19 | Molon Motor And Coil Corporation | Peristaltic pump that is resistant to torques and vibrations |
| US20070031272A1 (en) * | 2005-08-05 | 2007-02-08 | Molon Motor And Coil Corporation | Peristaltic pump |
| DE102005060193B4 (de) * | 2005-12-14 | 2008-01-17 | Universität Kassel | Verfahren und Vorrichtung zur kontinuierlichen Reduzierung der Geruchsbelastung von Abwasser in der Kanalisation, sowie Verfahren und Vorrichtung zur Ermittlung der Belastung einer Wasserprobe mit Geruchsstoffen |
| JP5211426B2 (ja) * | 2006-01-23 | 2013-06-12 | 株式会社日立プラントテクノロジー | マイクロリアクタシステム |
| DE102006058051B4 (de) * | 2006-12-07 | 2014-07-10 | Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG | Verfahren zur Überwachung der Konzentration eines Wasserinhaltsstoffes in einem wässrigen Medium |
| IL180875A0 (en) * | 2007-01-22 | 2007-07-04 | Ricor Ltd | Gas purge method and apparatus |
| DE102007054115B4 (de) * | 2007-11-10 | 2013-07-04 | Ech Elektrochemie Halle Gmbh | Verfahren zur Reduzierung von Geruchsbelästigungen in Abwässern |
| FR2935488A1 (fr) * | 2008-08-26 | 2010-03-05 | Total France | Dispositif portable pour le prelevement d'echantillons, procede mettant en oeuvre ledit dispositif et utilisation correspondante |
| US8785207B2 (en) * | 2008-09-12 | 2014-07-22 | Sri International | Method and apparatus for measuring multiple parameters in-situ of a sample collected from environmental systems |
| US9016110B2 (en) * | 2010-11-22 | 2015-04-28 | Nalco Company | Apparatus for on-line continuous chlorine analysis in turbid water and process streams |
| CN103543760A (zh) * | 2013-09-11 | 2014-01-29 | 旺昌机械工业(昆山)有限公司 | 直接制版冲版机显影控制系统 |
| ES2786094T3 (es) * | 2015-12-16 | 2020-10-08 | Xylem Europe Gmbh | Una disposición de estación de bombeo y un método para eliminar fluidos nocivos de las aguas residuales |
| FR3058998A1 (fr) * | 2016-11-18 | 2018-05-25 | Syndicat Interdepartemental Pour L’Assainissement De L’Agglomeration Parisienne (Siaap) | Systeme predictif de mesure et de regulation du potentiel emissif des eaux residuaires |
| NO20191352A1 (no) * | 2019-11-14 | 2021-05-17 | Searas As | Fremgangsmåte for å bestemme mengden av en gass oppløst i en væske |
| EP4411372A4 (en) * | 2021-09-30 | 2025-08-06 | Shimadzu Corp | GAS-LIQUID SEPARATOR, TOTAL ORGANIC CARBON METER AND ANALYSIS SYSTEM |
| US20250153074A1 (en) * | 2022-03-01 | 2025-05-15 | Mike Jupe | Air Stripping Device |
| CN114813449B (zh) * | 2022-04-29 | 2024-10-22 | 鞍钢股份有限公司 | 一种煤气中痕量硫化氢分析方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5004696A (en) * | 1988-03-24 | 1991-04-02 | Ashland Oil, Inc. | Automatic total reducers monitoring and adjustment system |
| US5110744A (en) * | 1989-11-16 | 1992-05-05 | Amoco Corporation | Method for process control |
| US5356458A (en) * | 1991-08-12 | 1994-10-18 | Clearwater Industries Corporation | Computerized chemical injection system for hydrogen sulfide control in a waste water stream |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3705098A (en) * | 1971-02-22 | 1972-12-05 | Fmc Corp | Sewage treatment with hydrogen peroxide |
| JPH06105248B2 (ja) * | 1984-05-29 | 1994-12-21 | 工業技術院長 | 硫化水素測定法および測定装置 |
| US5299141A (en) * | 1989-12-22 | 1994-03-29 | American Sigma, Inc. | Automatic fluid monitoring and sampling apparatus and method |
| US5222032A (en) * | 1990-10-26 | 1993-06-22 | E. I. Du Pont De Nemours And Company | System and method for monitoring the concentration of volatile material dissolved in a liquid |
| SU1754146A1 (ru) * | 1990-12-07 | 1992-08-15 | Воронежский инженерно-строительный институт | Установка дл удалени сероводорода из воды |
| US5218856A (en) * | 1992-03-06 | 1993-06-15 | Axiom Analytical, Inc. | Analysis of liquid-carried impurities by means of sparging |
| AU5629094A (en) * | 1993-11-29 | 1995-06-13 | Buchel, Jutta | Chemical injection system for hydrogen sulfide control in a waste water stream |
| WO1995020165A1 (en) * | 1994-01-24 | 1995-07-27 | Olin Corporation | Analyzer for monitoring volatile contaminants in liquid streams |
| US5496733A (en) * | 1994-08-19 | 1996-03-05 | Spandau; Daniel J. | Discharge monitoring system |
| US5531961A (en) * | 1995-02-10 | 1996-07-02 | Isco, Inc. | Water impurity analyzer |
-
1998
- 1998-10-13 US US09/170,535 patent/US5981289A/en not_active Expired - Fee Related
- 1998-10-15 WO PCT/US1998/021695 patent/WO1999019726A1/en not_active Ceased
- 1998-10-15 EP EP98953502A patent/EP1023596A4/en not_active Withdrawn
- 1998-10-15 JP JP2000516227A patent/JP3875488B2/ja not_active Expired - Fee Related
- 1998-10-15 AU AU10857/99A patent/AU732672B2/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5004696A (en) * | 1988-03-24 | 1991-04-02 | Ashland Oil, Inc. | Automatic total reducers monitoring and adjustment system |
| US5110744A (en) * | 1989-11-16 | 1992-05-05 | Amoco Corporation | Method for process control |
| US5356458A (en) * | 1991-08-12 | 1994-10-18 | Clearwater Industries Corporation | Computerized chemical injection system for hydrogen sulfide control in a waste water stream |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1023596A4 (en) | 2005-05-04 |
| EP1023596A1 (en) | 2000-08-02 |
| WO1999019726A1 (en) | 1999-04-22 |
| US5981289A (en) | 1999-11-09 |
| JP2003522317A (ja) | 2003-07-22 |
| JP3875488B2 (ja) | 2007-01-31 |
| AU1085799A (en) | 1999-05-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) |