WO2009118277A1 - Verfahren zum konditionieren einer bei der nasschemischen reinigung eines nuklearen dampferzeugers anfallenden reinigungslösung - Google Patents
Verfahren zum konditionieren einer bei der nasschemischen reinigung eines nuklearen dampferzeugers anfallenden reinigungslösung Download PDFInfo
- Publication number
- WO2009118277A1 WO2009118277A1 PCT/EP2009/053329 EP2009053329W WO2009118277A1 WO 2009118277 A1 WO2009118277 A1 WO 2009118277A1 EP 2009053329 W EP2009053329 W EP 2009053329W WO 2009118277 A1 WO2009118277 A1 WO 2009118277A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cleaning solution
- cathode
- cleaning
- conditioning
- steam generator
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
- G21F9/16—Processing by fixation in stable solid media
Definitions
- the invention relates to a method for conditioning a resulting in the wet-chemical cleaning of a nuclear steam generator cleaning solution.
- the resulting cleaning solutions When wet-cleaning a nuclear steam generator, the resulting cleaning solutions must be disposed of. These are usually in dissolved form complexing agent, ammonium, amines and iron. The used cleaning solutions are burnt in many cases as hazardous waste. However, special disposal problems arise when the cleaning solutions contain radioactive metal nuclides, for example Co60, in concentrations above a permissible limit. These spent cleaning solutions can therefore not be treated as normal waste, but must be conditioned for final disposal very complex and expensive and spent in special repository.
- radioactive metal nuclides for example Co60
- the invention is therefore based on the object, a method for conditioning a resulting in the wet-chemical cleaning of a nuclear steam generator cleaning solution with which also the disposal of cleaning solutions contaminated with radioactive metal nuclides is economically possible.
- the object is achieved according to the invention with a method having the features of claim 1. Since the cleaning solution is treated electrolytically and deposited in the cleaning solution radioactive metal nuclides are deposited on a cathode, it is possible to reduce the radioactive contamination of the cleaning solution so far in that it is below a predetermined exemption limit. In this way, the disposal of the present in a large amount cleaning solution is considerably simplified, since only the radioactively contaminated cathode must be disposed of as radioactive waste under consideration of the respective radiation protection and disposal conditions.
- a particularly effective deposition of radioactive metal nuclides is achieved when the cathode is made of a material that has a hydrogen overvoltage, and whose potential is set above the potential of hydrogen evolution.
- a lead electrode As a cathode with high hydrogen overvoltage, a lead electrode is generally suitable. A particularly high hydrogen overvoltage and consequently good deposition of metallic ions is achieved when the cathode is a diamond electrode.
- the anode also consists of a material which has an oxygen overvoltage, preferably also a diamond electrode whose potential is below the Potential of the oxygen evolution is adjusted, the organic components in the cleaning solution, such as a complexing agent, can be denatured during electrolysis at the same time, so that almost all Fe precipitates as oxide or hydroxide. Due to the large surface area of the precipitated iron oxide or iron hydroxide, radioactive metal nuclides, for example C06O, which are still present in the solution are also adsorbed thereon and are thus removed from the cleaning solution in this way. If the electrolysis time is sufficiently long, the entire complexing agent (eg EDTA) can be destroyed.
- a complexing agent eg EDTA
- the COD or TOC value (chemical oxygen demand or total content of organic carbon) drops significantly in this treatment. In this way it is possible to reduce the contamination with both organic compounds and with radioactive nuclides so far that the solution can be disposed of with little effort. Only precipitate and cathode have to be disposed of as radioactive waste with a considerably lower volume.
- a disposal of the cathode is not required, that is, their further use is possible if the deposited on their metals with an inorganic acid are removed.
- the neutralized acid has to be disposed of together with a precipitate (FeO, Fe 2 O 3 , Fe (OH) 2 , Fe (OH) 3 ) which may be formed by destroying the complexing agents.
- a two-stage electrolysis is carried out, in which the cleaning solution is acidified after a first electrolytic treatment and subsequently subjected to a second electrolytic treatment. is withdrawn.
- the cleaning solution is electrolyzed without pretreatment.
- the dissolved Fe is deposited and additionally precipitated when using an anode with oxygen overvoltage.
- the cleaning solution pretreated in this way is acidified and electrolyzed again until the concentration of activity (C06O) is below a predetermined release limit. After that it can be neutralized and disposed of.
- Fig. 1 and 2 are each a diagram of the proportion in which iron Fe and cobalt Co are present after one-stage or two-stage electrolysis in the cleaning solution, on the electrode and in the precipitate.
- a simulated DE cleaning solution (1.3 l) with 10 g / l EDTA, 11.8 g / l morpholine, corresponding to a COD of 29.2 g / l, 106 mg / l Co and 2.1 g / l Fe was electrolyzed on diamond electrodes (cathode and anode). After 6 h at 1.0 A / m 2 , the cleaning solution (in the diagram of Fig.l graphically represented by the bars I) contained only 0.3% of Fe and 31% of Co. On the cathode (in the diagram of FIG .l represented by bars II), 1.5% of the Fe and 51% of the Co were deposited.
- the final values of the EDTA content and the COD value were reached at 0.01 g / l and 0.16 g / l, respectively. Both the content of EDTA and the COD value were reduced by over 99% by the combined treatment.
- Example 2 The advantage of such an acidic single-stage electrolysis according to Example 2 consists essentially in the fact that the steps required in Example 1, filtration and re-electrolysis omitted.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Electrolytic Production Of Metals (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011501182A JP5343121B2 (ja) | 2008-03-28 | 2009-03-20 | 原子力蒸気発生器の湿式化学方式による洗浄の際に生じる洗浄溶液を調整する方法 |
EP09725983.2A EP2257949B1 (de) | 2008-03-28 | 2009-03-20 | Verfahren zum konditionieren einer bei der nasschemischen reinigung eines nuklearen dampferzeugers anfallenden reinigungslösung |
ES09725983T ES2411932T3 (es) | 2008-03-28 | 2009-03-20 | Método para acondicionar una solución limpiadora resultante de la limpieza química en húmedo de un generador nuclear de vapor |
US12/817,366 US20100252449A1 (en) | 2008-03-28 | 2010-06-17 | Method for Conditioning a Cleaning Solution Resulting from the Wet Chemical Cleaning of a Nuclear Steam Generator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008016020A DE102008016020A1 (de) | 2008-03-28 | 2008-03-28 | Verfahren zum Konditionieren einer bei der nasschemischen Reinigung eines nuklearen Dampferzeugers anfallenden Reinigungslösung |
DE102008016020.2 | 2008-03-28 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/817,366 Continuation US20100252449A1 (en) | 2008-03-28 | 2010-06-17 | Method for Conditioning a Cleaning Solution Resulting from the Wet Chemical Cleaning of a Nuclear Steam Generator |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009118277A1 true WO2009118277A1 (de) | 2009-10-01 |
Family
ID=40765778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/053329 WO2009118277A1 (de) | 2008-03-28 | 2009-03-20 | Verfahren zum konditionieren einer bei der nasschemischen reinigung eines nuklearen dampferzeugers anfallenden reinigungslösung |
Country Status (8)
Country | Link |
---|---|
US (1) | US20100252449A1 (de) |
EP (1) | EP2257949B1 (de) |
JP (1) | JP5343121B2 (de) |
KR (1) | KR20100077014A (de) |
DE (1) | DE102008016020A1 (de) |
ES (1) | ES2411932T3 (de) |
TW (1) | TW200945369A (de) |
WO (1) | WO2009118277A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112144066B (zh) * | 2020-09-30 | 2022-03-25 | 西安热工研究院有限公司 | 高温气冷堆核电机组二回路水汽系统化学清洗剂及清洗方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0412815A2 (de) * | 1989-08-11 | 1991-02-13 | Westinghouse Electric Corporation | Verfahren und Vorrichtung zum Konzentrieren gelöster und fester radioaktiver Materialien in einer Abfallwasserlösung |
EP0568408A1 (de) * | 1992-04-21 | 1993-11-03 | Framatome | Trennungs- und Verschlussraum für in flüssigen Abfällen enthaltender radioaktiver Substanzen, sowie Vorrichtung und Verfahren für deren Behandlung |
EP0753486A1 (de) * | 1995-07-11 | 1997-01-15 | Framatome | Verfahren zur elektrolytischen Behandlung von aufgelöste Metalle enthaltenden Abwässer und Anwendung zur Behandlung von Cerium enthaltenden Abwässer |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5851977A (ja) * | 1981-09-25 | 1983-03-26 | Hitachi Ltd | 化学除染液の再生方法 |
JPS6093999A (ja) * | 1983-10-28 | 1985-05-25 | 日立プラント建設株式会社 | 化学除染廃液の処理方法 |
JPH0631858B2 (ja) * | 1984-09-26 | 1994-04-27 | 株式会社東芝 | 溶液中金属イオンの分離方法 |
JPS61194398A (ja) * | 1985-02-23 | 1986-08-28 | 株式会社東芝 | 放射能で汚染された被処理物の除染装置 |
JPS61231496A (ja) * | 1985-04-05 | 1986-10-15 | 日立プラント建設株式会社 | 放射性金属廃棄物の除染方法 |
JPS6336198A (ja) * | 1986-07-29 | 1988-02-16 | 株式会社東芝 | 放射性廃液の処理方法 |
US4861444A (en) * | 1988-09-06 | 1989-08-29 | Schoessow Glen J | Process for treating radioactive material to make it safe for disposal |
JPH02171695A (ja) * | 1988-12-26 | 1990-07-03 | Toshiba Corp | 放射性廃液処理装置 |
JPH0438499A (ja) * | 1990-06-04 | 1992-02-07 | Toshiba Corp | 除染廃液の処理方法 |
JP2713828B2 (ja) * | 1992-01-14 | 1998-02-16 | 動力炉・核燃料開発事業団 | 核燃料再処理溶解液から有価金属を回収する方法 |
JPH05341098A (ja) * | 1992-06-11 | 1993-12-24 | Mitsubishi Heavy Ind Ltd | 蒸気発生器二次側化学洗浄液の処理方法 |
FR2717459B1 (fr) * | 1994-03-16 | 1996-04-12 | Commissariat Energie Atomique | Procédé et installation de destruction de solutes organiques, en particulier d'agents complexants, présents dans une solution aqueuse telle qu'un effluent radioactif. |
JPH10104396A (ja) * | 1996-10-02 | 1998-04-24 | Toshiba Corp | 化学除染方法およびその装置 |
GB2319040B (en) * | 1996-11-08 | 2000-07-12 | Aea Technology Plc | Radioactive effluent treatment |
FR2761085B1 (fr) * | 1997-03-24 | 1999-04-16 | Commissariat Energie Atomique | Procede electrolytique de recuperation et de recyclage de l'argent a partir d'une solution nitrique |
DE19842396A1 (de) * | 1998-09-16 | 2000-04-13 | Fraunhofer Ges Forschung | Elektrode für elektrochemische Prozesse |
US6149797A (en) * | 1998-10-27 | 2000-11-21 | Eastman Kodak Company | Method of metal recovery using electrochemical cell |
DE10005681B4 (de) * | 2000-02-07 | 2005-06-16 | Atc Dr. Mann E.K. | Verfahren und Vorrichtung zur Dekontamination metallhaltiger Wässer |
US6682646B2 (en) * | 2002-03-25 | 2004-01-27 | Electric Power Research Institute | Electrochemical process for decontamination of radioactive materials |
JP2004321963A (ja) * | 2003-04-25 | 2004-11-18 | Kurita Water Ind Ltd | 硝酸性窒素含有水の処理方法 |
-
2008
- 2008-03-28 DE DE102008016020A patent/DE102008016020A1/de not_active Withdrawn
-
2009
- 2009-03-20 ES ES09725983T patent/ES2411932T3/es active Active
- 2009-03-20 EP EP09725983.2A patent/EP2257949B1/de active Active
- 2009-03-20 WO PCT/EP2009/053329 patent/WO2009118277A1/de active Application Filing
- 2009-03-20 KR KR1020107010170A patent/KR20100077014A/ko not_active Application Discontinuation
- 2009-03-20 JP JP2011501182A patent/JP5343121B2/ja active Active
- 2009-03-26 TW TW098109823A patent/TW200945369A/zh unknown
-
2010
- 2010-06-17 US US12/817,366 patent/US20100252449A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0412815A2 (de) * | 1989-08-11 | 1991-02-13 | Westinghouse Electric Corporation | Verfahren und Vorrichtung zum Konzentrieren gelöster und fester radioaktiver Materialien in einer Abfallwasserlösung |
EP0568408A1 (de) * | 1992-04-21 | 1993-11-03 | Framatome | Trennungs- und Verschlussraum für in flüssigen Abfällen enthaltender radioaktiver Substanzen, sowie Vorrichtung und Verfahren für deren Behandlung |
EP0753486A1 (de) * | 1995-07-11 | 1997-01-15 | Framatome | Verfahren zur elektrolytischen Behandlung von aufgelöste Metalle enthaltenden Abwässer und Anwendung zur Behandlung von Cerium enthaltenden Abwässer |
Also Published As
Publication number | Publication date |
---|---|
ES2411932T3 (es) | 2013-07-09 |
TW200945369A (en) | 2009-11-01 |
KR20100077014A (ko) | 2010-07-06 |
EP2257949B1 (de) | 2013-05-08 |
JP2011515687A (ja) | 2011-05-19 |
EP2257949A1 (de) | 2010-12-08 |
US20100252449A1 (en) | 2010-10-07 |
JP5343121B2 (ja) | 2013-11-13 |
DE102008016020A1 (de) | 2009-10-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69400594T2 (de) | Verfahren zur Rückgewinnung und Auffrischung von Verzinnungsbädern | |
EP2417606B1 (de) | Verfahren zur oberflächen-dekontamination | |
DE2604371C2 (de) | ||
DE102017115122B4 (de) | Verfahren zum Dekontaminieren einer Metalloberfläche in einem Kernkraftwerk | |
DE69507709T2 (de) | Dekontaminierungsverfahren | |
EP2828205B1 (de) | Verfahren zur entfernung radioaktiver verunreinigungen aus abwässern | |
DE10005681A1 (de) | Verfahren und Vorrichtung zur Dekontamination metallhaltiger und/oder radioaktiv belasteter Wässer | |
EP2188814B1 (de) | Verfahren zur dekontamination von mit alphastrahlern kontaminierten oberflächen von nuklearanlagen | |
EP2257949B1 (de) | Verfahren zum konditionieren einer bei der nasschemischen reinigung eines nuklearen dampferzeugers anfallenden reinigungslösung | |
EP0610153A1 (de) | Verfahren zur Dekontamination von radioaktiven Metalloberflächen | |
EP2313348B1 (de) | Verfahren zur konditionierung einer bei der nasschemischen reinigung konventioneller oder nukleartechnischer anlagen anfallenden, organische substanzen und metalle in ionischer form enthaltenden abfalllösung | |
DE3047988A1 (de) | Verfahren zur verringerung des saeuregehaltes einer salpetersauren loesung unter verwendung eines elektrolysestromes und vorrichtung zur durchfuehrung des verfahrens | |
EP3895184B1 (de) | Verfahren zur konditionierung von ionenaustauscherharzen und vorrichtung zur durchführung des verfahrens | |
EP1141445A1 (de) | Verfahren zur dekontamination einer oberfläche eines bauteiles | |
DE3906791A1 (de) | Verfahren zur aufbereitung von metallhaltigen, salpetersauren, flusssaeure enthaltenden abfallbeizen | |
DE2758783C3 (de) | Verfahren zur Gewinnung von Molybdän-99 aus mit Neutronen bestrahlter, spaltbare Stoffe und Spaltprodukte enthaltender Matrix | |
DE2219095A1 (de) | Verfahren zur Reinigung von Abwässern | |
DE4241867A1 (de) | Verfahren zur Verlängerung der Nutzungsdauer von Elektrolytlösungen durch Eliminierung organischer Störstoffe | |
EP1665289B1 (de) | Verfahren zur regeneration von dekontaminationsmitteln | |
DE4022035C1 (en) | Decontamination process for removing nitrate(s), chromium and cadmium - includes acidifying medium to produce electroconductive iron (II) ions, redox-reacting iron and chromium ions, etc. | |
DD148795A5 (de) | Rueckgewinnung von cyaniden aus spuelwassern der cyanidischen prozesse der elektrolytischen metallabscheidung | |
DE2601620B2 (de) | Verfahren zur Regenerierung von Ionenaustauschern | |
DE2049369C3 (de) | Verfahren zum Regenerieren von beim Galvanisieren mit cyanidhaltigen Bädern anfallenden Waschlösungen | |
Baatz et al. | Plant for carrying out process for removing radioactive waste | |
EP1141975A2 (de) | Verfahren zum entsorgen von metallkationen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09725983 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20107010170 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009725983 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011501182 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |