EP1535059A1 - Procede de determination de la demande en oxygene d'une solution aqueuse, destine a un processus d'epuration - Google Patents
Procede de determination de la demande en oxygene d'une solution aqueuse, destine a un processus d'epurationInfo
- Publication number
- EP1535059A1 EP1535059A1 EP03794979A EP03794979A EP1535059A1 EP 1535059 A1 EP1535059 A1 EP 1535059A1 EP 03794979 A EP03794979 A EP 03794979A EP 03794979 A EP03794979 A EP 03794979A EP 1535059 A1 EP1535059 A1 EP 1535059A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aqueous solution
- combustion
- determining
- sample
- purification process
- 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
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000007864 aqueous solution Substances 0.000 title claims abstract description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 10
- 239000001301 oxygen Substances 0.000 title claims abstract description 10
- 238000000746 purification Methods 0.000 title abstract 2
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 239000003054 catalyst Substances 0.000 claims abstract description 11
- 239000002351 wastewater Substances 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000005352 clarification Methods 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 230000029087 digestion Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000004182 chemical digestion Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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
- G01N33/1806—Biological oxygen demand [BOD] or chemical oxygen demand [COD]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
Definitions
- the invention relates to a method for determining the oxygen requirement of an aqueous solution, in particular for a clarification process.
- DE 44 12 778 Cl discloses a method for analyzing a particle-containing aqueous sample, in particular for organic carbon determination, in which the sample is injected into a first combustion chamber, which is then heated to about 1000 ° C. by an associated heating device and the sample is thereby evaporated and is burned. After complete combustion, the heating device of the first combustion chamber is switched off and the latter is cooled, and the combustion gases are subjected to a heat treatment in the range between 800 ° C. and 950 ° C. when they pass through a catalyst assigned to a second, horizontally running combustion chamber.
- the combustion chamber is formed by an L-shaped quartz glass tube. Its post-combustion chamber is filled with an oxidation catalyst, for example copper oxide.
- Another important parameter for the characterization of the biochemical or chemical quality of water for treatment processes - especially of wastewater for clarification processes - is the oxygen requirement to be used for this.
- this is characterized by several variables, of which the biochemical oxygen demand (BOD n ) has been used longest in practice.
- BOD n biochemical oxygen demand
- COD chemical oxygen demand
- Short-term determination is extremely difficult, the measurement results are difficult to reproduce and the microorganisms are susceptible to toxic matrix components, pH value shifts and the accumulation of inhibitory metabolic products.
- the standardized methods for COD determination provide excellent reproducible results, but they are difficult to automate and place high demands on occupational safety.
- an advantageous parameter for quantifying the organic wastewater load is the total oxygen demand (TOD), the determination of which includes thermal oxidation by burning the sample in a high-temperature reactor.
- TOD total oxygen demand
- other organic compounds are also recorded.
- TOD total oxygen demand
- JP-B-977-26111 describes a combined TOC and TOD measurement in which the sample is digested in a combustion chamber at 500 ° C.
- the invention is based on the object of specifying a simplified method of the generic type.
- the invention accordingly includes the essential idea of performing a purely thermal digestion without the use of a catalyst in a departure from the thermal-catalytic type of digestion. She continues to close the mind agree to increase the combustion temperature, to a value above 1150 ° C, especially to a value at 1200 ° C.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Emergency Medicine (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
L'invention concerne un procédé de détermination de la demande en oxygène (DTO ou DCO) d'une solution aqueuse, notamment d'eaux usées, destiné à un processus d'épuration. Selon ledit procédé, un échantillon de la solution aqueuse est décomposé par combustion, la combustion se faisant sans catalyseur à une température supérieure à 1150 DEG C, en particulier à 1200 DEG C.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10240410 | 2002-09-02 | ||
| DE10240410A DE10240410B3 (de) | 2002-09-02 | 2002-09-02 | Verfahren zur Bestimmung des Sauerstoffbedarfs einer wässrigen Lösung für einen Klärprozess |
| PCT/EP2003/009702 WO2004025292A1 (fr) | 2002-09-02 | 2003-09-01 | Procede de determination de la demande en oxygene d'une solution aqueuse, destine a un processus d'epuration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1535059A1 true EP1535059A1 (fr) | 2005-06-01 |
Family
ID=30010626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03794979A Ceased EP1535059A1 (fr) | 2002-09-02 | 2003-09-01 | Procede de determination de la demande en oxygene d'une solution aqueuse, destine a un processus d'epuration |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US20060019403A1 (fr) |
| EP (1) | EP1535059A1 (fr) |
| CN (1) | CN100353165C (fr) |
| AU (1) | AU2003264143A1 (fr) |
| DE (1) | DE10240410B3 (fr) |
| WO (1) | WO2004025292A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007004339B4 (de) | 2007-01-29 | 2008-10-02 | Lar Process Analysers Ag | Verfahren und Vorrichtung zur Bestimmung des Phosphorgehaltes einer wässrigen Probe |
| CN107632108A (zh) * | 2017-08-30 | 2018-01-26 | 广东上风环保科技有限公司 | 一种测定水质化学需氧量的方法 |
| DE102017120386A1 (de) | 2017-09-05 | 2019-03-07 | Lar Process Analysers Ag | Verfahren und Vorrichtung zur Bestimmung des chemischen Sauerstoffbedarfs mit thermischem Probenaufschluss |
| DE102018105611A1 (de) * | 2018-03-12 | 2019-09-12 | Lar Process Analysers Ag | Messanordnung und Messverfahren zur Bestimmung eines Inhaltsstoffes oder Qualitätsparameters von Wasser oder Abwasser |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3560156A (en) * | 1965-05-03 | 1971-02-02 | Dow Chemical Co | Determining the oxygen demand of combustible materials in aqueous dispersions |
| DE2261456B2 (de) * | 1972-12-15 | 1976-10-21 | Bayer Ag, 5090 Leverkusen | Pyrolytische analyse von fluessigkeiten |
| JPS58106459A (ja) * | 1981-12-19 | 1983-06-24 | Toshiba Corp | 水中の有機物測定用標準溶液 |
| DE69127071T2 (de) * | 1990-01-31 | 1998-01-29 | Modar, Inc., Houston, Tex. | Verfahren zur oxydation von materialien in wasser bei überkritischen temperaturen |
| FR2670868B1 (fr) * | 1990-12-19 | 1995-07-13 | Commissariat Energie Atomique | Procede de destruction d'effluents organiques toxiques par incineration en phase aqueuse et installation en faisant application. |
| DE4412778C1 (de) * | 1994-04-18 | 1995-07-20 | Elementar Analysensysteme Gmbh | Verfahren und Vorrichtung zur Analyse einer wässrigen Probe |
| FI98626C (sv) * | 1994-10-04 | 1997-07-25 | Eka Nobel Ab | Förfarande för rening av avloppsvatten |
| DE19727839A1 (de) * | 1997-06-24 | 1999-01-28 | Lar Analytik Und Umweltmestech | Verfahren zur Bestimmung eines Wasserinhaltsstoffes |
| DE19923139A1 (de) * | 1999-05-03 | 2000-12-07 | Lar Analytik & Umweltmestechni | Verfahren und Vorrichtung zum Aufschluß einer wässrigen Lösung zur Kohlenstoffgehaltsbestimmung |
-
2002
- 2002-09-02 DE DE10240410A patent/DE10240410B3/de not_active Expired - Lifetime
-
2003
- 2003-09-01 CN CNB038207265A patent/CN100353165C/zh not_active Expired - Lifetime
- 2003-09-01 US US10/526,259 patent/US20060019403A1/en not_active Abandoned
- 2003-09-01 AU AU2003264143A patent/AU2003264143A1/en not_active Abandoned
- 2003-09-01 WO PCT/EP2003/009702 patent/WO2004025292A1/fr not_active Application Discontinuation
- 2003-09-01 EP EP03794979A patent/EP1535059A1/fr not_active Ceased
-
2009
- 2009-03-31 US US12/415,209 patent/US20090186417A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004025292A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20060019403A1 (en) | 2006-01-26 |
| AU2003264143A1 (en) | 2004-04-30 |
| CN1678906A (zh) | 2005-10-05 |
| WO2004025292A1 (fr) | 2004-03-25 |
| US20090186417A1 (en) | 2009-07-23 |
| CN100353165C (zh) | 2007-12-05 |
| DE10240410B3 (de) | 2004-02-05 |
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| DAX | Request for extension of the european patent (deleted) | ||
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| RIC1 | Information provided on ipc code assigned before grant |
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