FI118393B - Förfarande och anordning för kontrollerandet av matningen av vattenbehandlingskemikalier medelst en voltametrisk sensor - Google Patents
Förfarande och anordning för kontrollerandet av matningen av vattenbehandlingskemikalier medelst en voltametrisk sensor Download PDFInfo
- Publication number
- FI118393B FI118393B FI962837A FI962837A FI118393B FI 118393 B FI118393 B FI 118393B FI 962837 A FI962837 A FI 962837A FI 962837 A FI962837 A FI 962837A FI 118393 B FI118393 B FI 118393B
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- FI
- Finland
- Prior art keywords
- voltage
- electrode
- chemical
- current
- solution
- Prior art date
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Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/49—Systems involving the determination of the current at a single specific value, or small range of values, of applied voltage for producing selective measurement of one or more particular ionic species
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Food Science & Technology (AREA)
- Electrochemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Control Of Non-Electrical Variables (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Activated Sludge Processes (AREA)
- Physical Water Treatments (AREA)
- Weting (AREA)
Claims (8)
1. Förfarande för regiering av kemisk behandling av en loaning, vilket förfarande omfattar följande steg: 5 (a) matning av en behandlingskemikalie i lösning en; (b) matning av yttre spanning över en jämförelse-elektrod och en arbetselektrod i en voltametrisk sensor dä elektroderna är nedsänkta i lösningen; 10 (c) matning av strömmen som passerar genom arbets- elektroden; (d) omvandling av den uppmätta strömmen tili en äterkopplingssignal som indikerar koncentrationen av ett ämne i lösningen; 15 (e) användning av äterkopplingssignalen för att reglera inmatningshastigheten för behandlingskemikalien i steg (a), kännetecknat av att en bakgrundssignal mäts före matning av behand- 20 lingskemikalien i lösningen; ·· : *** och bakgrundssignalen minskas frän äterkopplings- t * · • *,ϊ signalen efter att behandlingskemikalien har matats i lös- :V: ningen.
2. Förfarande enligt patentkrav 1, kännetecknat . 25 av att i spänningsmatningssteget (b) mätäs en likströms- ··* .*;% spanning.
3. Förfarande enligt patentkrav 1, kännetecknat av att i spänningsmatningssteget (b) mätäs ett spännings-pulstäg. • · *·;·* 30
4. Förfarande enligt patentkrav 3, kännetecknat ϊΥ: av att i spänningsmätningssteget (c) mäts spänningen efter ·***: matningen av en spänningspuls för pulstäget för att tiliä- • M ta icke faradisk laddning.
·*·. 5. Förfarande enligt patentkrav 1, kännetecknat • « t *· *· 35 av att det dessutom omf attar följande steg: matning tili arbetselektroden av Ström som är tillräcklig för att avlägsna avlagringar frän elektroden. 25 1 1 8393
6. Apparatur för regiering av mängden av behand-lingskemikalie som skall tillsättas tili en loaning; vil-ken apparatur omfattar medel för matning av en behandlingskemikalie i 5 lösningen; en voltametrisk sensor, som innehäller en jämförelseelektrod, en arbetselektrod, medel för matning av en spanning över jämförelse-10 elektroden och arbetselektroden medan dessa är nedsänkta i lösningen; medel för matning av strömmen som passerar genom arbetselektroden och medel för omvandling av den uppmätta strömmen tili 15 en äterkopplingssignal som indikerar koncentrationen av ett ämne i lösningen; medel för matning av äterkopplingssignalen tili matningsmedlen och sälunda för regiering av inmatningshas-tigheten för behandlingskemikalien, 20 kännetecknad av ·· • » • 1 medel för matning av en bakgrundssignal före mat- ϊ *.* ning av behandlingssignalen i lösningen; och • » *.V medel för minskning av bakgrunds s ignalen frän äterkopplingssignalen efter att behandlingskemikalien har : 25 matats i lösningen.
7. Apparatur enligt patentkrav 6, kännetecknad m av att den dessutom omfattar medel för matning tili ar-betselektroden av Ström som är tillräcklig för att avlägs- • «· na avlagringar frän arbetselektroden. **"* 30
8. Apparatur enligt patentkrav 6, kännetecknad • · ϊ.ϊ,· av att den dessutom omfattar en motelektrod, ·♦· medel för matning av yttre spanning över motelek- * * Γ*. troden och arbetselektroden medan dessa är nedsänkta i • · · *s 35 lösningen.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/181,254 US5470484A (en) | 1994-01-13 | 1994-01-13 | Method and apparatus for controlling the feed of water treatment chemicals using a voltammetric sensor |
| US18125494 | 1994-01-13 | ||
| PCT/US1995/000487 WO1995019566A1 (en) | 1994-01-13 | 1995-01-12 | A method and apparatus for controlling the feed of water treatment chemicals using a voltammetric sensor |
| US9500487 | 1995-01-12 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI962837A0 FI962837A0 (sv) | 1996-07-12 |
| FI962837A FI962837A (sv) | 1996-09-12 |
| FI118393B true FI118393B (sv) | 2007-10-31 |
Family
ID=22663502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI962837A FI118393B (sv) | 1994-01-13 | 1996-07-12 | Förfarande och anordning för kontrollerandet av matningen av vattenbehandlingskemikalier medelst en voltametrisk sensor |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US5470484A (sv) |
| EP (1) | EP0739485B1 (sv) |
| JP (1) | JP3251016B2 (sv) |
| CN (1) | CN1088193C (sv) |
| AT (1) | ATE314646T1 (sv) |
| AU (1) | AU1566395A (sv) |
| BR (1) | BR9506513A (sv) |
| CA (1) | CA2180365C (sv) |
| CZ (1) | CZ208796A3 (sv) |
| DE (1) | DE69534714T2 (sv) |
| ES (1) | ES2256844T3 (sv) |
| FI (1) | FI118393B (sv) |
| MX (1) | MX9602760A (sv) |
| NO (1) | NO962932L (sv) |
| NZ (1) | NZ279132A (sv) |
| SK (1) | SK90496A3 (sv) |
| WO (1) | WO1995019566A1 (sv) |
| ZA (1) | ZA9410120B (sv) |
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| AU730153B2 (en) * | 1994-01-13 | 2001-03-01 | Buckman Laboratories International, Inc. | A method and apparatus for controlling the feed of water treatment chemicals using a voltammetric sensor |
| DE59509994D1 (de) * | 1994-06-03 | 2002-02-21 | Metrohm Ag Herisau | Vorrichtung für die Voltammetrie, Indikatorelektroden-Anordnung für eine solche Vorrichtung, insbesondere als Teil einer Bandkassette, und Reihenanalyse-Verfahren für die Voltammetrie |
| US5644501A (en) * | 1994-12-06 | 1997-07-01 | Lin; Shengfu | Method of using a computer to collect chemical signals directly |
| DE19642413A1 (de) * | 1996-10-14 | 1998-04-16 | Dinotec Gmbh | Vorrichtung zur Dosierung von wasserstoffperoxidhaltigen wäßrigen Lösungen |
| US6203767B1 (en) | 1998-11-06 | 2001-03-20 | Steris Corporation | Peracetic acid card reader and card style sensor |
| US6541139B1 (en) * | 1999-08-05 | 2003-04-01 | Alan W. Cibuzar | Septic battery |
| US6592730B1 (en) | 2000-02-07 | 2003-07-15 | Steris Inc. | Durable carbon electrode |
| US6558529B1 (en) | 2000-02-07 | 2003-05-06 | Steris Inc. | Electrochemical sensor for the specific detection of peroxyacetic acid in aqueous solutions using pulse amperometric methods |
| US6598457B2 (en) | 2001-04-05 | 2003-07-29 | Buckman Laboratories International, Inc. | Method and apparatus for measuring the amount of entrained gases in a liquid sample |
| US20030019748A1 (en) * | 2001-06-19 | 2003-01-30 | Elena Viltchinskaia | Method and apparatus for stripping voltammetric and potent iometric detection and measurement of contamination in liquids |
| US7264709B2 (en) * | 2004-09-21 | 2007-09-04 | Siemens Water Technologies Holding Corp. | Method and apparatus for conditioning a sensor for measuring oxidation reduction potential |
| EP1707954B1 (de) * | 2005-04-01 | 2008-05-07 | Mettler-Toledo AG | Verfahren und Vorrichtung zur Funktionskontrolle eines Sensors |
| GB0601184D0 (en) * | 2006-01-20 | 2006-03-01 | Intellitect Water Ltd | Sensor drive and signal processing system for electrochemical sensors |
| US8658094B2 (en) * | 2007-01-29 | 2014-02-25 | Nalco Company | High temperature and pressure oxidation-reduction potential measuring and monitoring device for hot water systems |
| US8658095B2 (en) * | 2007-01-29 | 2014-02-25 | Nalco Company | High temperature and pressure oxidation-reduction potential measuring and monitoring device for hot water systems |
| US8153057B2 (en) | 2007-07-24 | 2012-04-10 | Nalco Company | Method and device for preventing corrosion in hot water systems |
| US8980173B2 (en) | 2007-01-29 | 2015-03-17 | Nalco Company | Systems and methods for monitoring and controlling corrosion in hot water systems |
| US8771593B2 (en) | 2007-07-24 | 2014-07-08 | Nalco Company | Method and device for preventing corrosion in hot water systems |
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| CN113816477B (zh) * | 2021-10-07 | 2023-04-21 | 浙江宏电环保股份有限公司 | 一种污水沉降处理装置 |
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-
1994
- 1994-01-13 US US08/181,254 patent/US5470484A/en not_active Expired - Lifetime
- 1994-12-20 ZA ZA9410120A patent/ZA9410120B/xx unknown
-
1995
- 1995-01-12 EP EP95907427A patent/EP0739485B1/en not_active Expired - Lifetime
- 1995-01-12 CZ CZ962087A patent/CZ208796A3/cs unknown
- 1995-01-12 AT AT95907427T patent/ATE314646T1/de not_active IP Right Cessation
- 1995-01-12 WO PCT/US1995/000487 patent/WO1995019566A1/en active IP Right Grant
- 1995-01-12 CN CN95191216A patent/CN1088193C/zh not_active Expired - Fee Related
- 1995-01-12 BR BR9506513A patent/BR9506513A/pt not_active IP Right Cessation
- 1995-01-12 AU AU15663/95A patent/AU1566395A/en not_active Abandoned
- 1995-01-12 DE DE69534714T patent/DE69534714T2/de not_active Expired - Fee Related
- 1995-01-12 NZ NZ279132A patent/NZ279132A/en not_active IP Right Cessation
- 1995-01-12 JP JP51913895A patent/JP3251016B2/ja not_active Expired - Fee Related
- 1995-01-12 SK SK904-96A patent/SK90496A3/sk unknown
- 1995-01-12 ES ES95907427T patent/ES2256844T3/es not_active Expired - Lifetime
- 1995-01-12 CA CA002180365A patent/CA2180365C/en not_active Expired - Fee Related
-
1996
- 1996-07-12 NO NO962932A patent/NO962932L/no unknown
- 1996-07-12 FI FI962837A patent/FI118393B/sv active IP Right Grant
- 1996-07-12 MX MX9602760A patent/MX9602760A/es not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FI962837A0 (sv) | 1996-07-12 |
| MX9602760A (es) | 1998-11-30 |
| AU1566395A (en) | 1995-08-01 |
| ZA9410120B (en) | 1996-03-06 |
| NO962932D0 (no) | 1996-07-12 |
| CN1138899A (zh) | 1996-12-25 |
| WO1995019566A1 (en) | 1995-07-20 |
| CA2180365A1 (en) | 1995-07-20 |
| NZ279132A (en) | 1997-09-22 |
| ES2256844T3 (es) | 2006-07-16 |
| CZ208796A3 (en) | 1997-03-12 |
| CA2180365C (en) | 2002-03-19 |
| JP3251016B2 (ja) | 2002-01-28 |
| EP0739485A1 (en) | 1996-10-30 |
| NO962932L (no) | 1996-09-12 |
| US5470484A (en) | 1995-11-28 |
| FI962837A (sv) | 1996-09-12 |
| ATE314646T1 (de) | 2006-01-15 |
| JPH09502527A (ja) | 1997-03-11 |
| DE69534714D1 (de) | 2006-02-02 |
| CN1088193C (zh) | 2002-07-24 |
| SK90496A3 (en) | 1997-07-09 |
| BR9506513A (pt) | 1997-09-09 |
| DE69534714T2 (de) | 2006-07-13 |
| EP0739485B1 (en) | 2005-12-28 |
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