FR2228036A1 - Treatment of waste water and gases contg. sulphites - converting by oxidn. to sulphates with metallic iron as catalyst - Google Patents
Treatment of waste water and gases contg. sulphites - converting by oxidn. to sulphates with metallic iron as catalystInfo
- Publication number
- FR2228036A1 FR2228036A1 FR7315624A FR7315624A FR2228036A1 FR 2228036 A1 FR2228036 A1 FR 2228036A1 FR 7315624 A FR7315624 A FR 7315624A FR 7315624 A FR7315624 A FR 7315624A FR 2228036 A1 FR2228036 A1 FR 2228036A1
- Authority
- FR
- France
- Prior art keywords
- sulphites
- sulphates
- metallic iron
- oxidn
- catalyst
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Effluents such as those from paper manufacture, contng. sulphites and from scrubbers for the waste gases from sulphurising processes with dissolved SO2, are treated first with caustic soda to bring them to a desired, slightly alkaline concn. of sulphites in soln. and then processed in an enclosed vessel heated by steam in the presence of metallic iron scrap, by the injection of finely dispersed air, enriched air or pure oxygen to convert the sulphites into sulphates at a concentration which is satisfactory to the authorities.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7315624A FR2228036A1 (en) | 1973-05-02 | 1973-05-02 | Treatment of waste water and gases contg. sulphites - converting by oxidn. to sulphates with metallic iron as catalyst |
DE19742419496 DE2419496A1 (en) | 1973-05-02 | 1974-04-23 | METHOD AND DEVICE FOR TREATMENT OF SULPHITE-CONTAINING WATER |
ES425629A ES425629A1 (en) | 1973-05-02 | 1974-04-24 | Treatment of waste water and gases contg. sulphites - converting by oxidn. to sulphates with metallic iron as catalyst |
JP4671874A JPS5734037B2 (en) | 1973-05-02 | 1974-04-26 | |
IT5071874A IT1015940B (en) | 1973-05-02 | 1974-04-30 | IMPROVEMENTS MADE TO THE TREATMENT OF SULPHITED WATERS |
BR352974A BR7403529D0 (en) | 1973-05-02 | 1974-04-30 | WATER TREATMENT PROCESS CONTAINING SULPHITES AND INSTALLATION EMPLOYED IN THE PROCESS |
ES446989A ES446989A1 (en) | 1973-05-02 | 1976-04-13 | Installation for the treatment of water containing sulphites. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7315624A FR2228036A1 (en) | 1973-05-02 | 1973-05-02 | Treatment of waste water and gases contg. sulphites - converting by oxidn. to sulphates with metallic iron as catalyst |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2228036A1 true FR2228036A1 (en) | 1974-11-29 |
FR2228036B1 FR2228036B1 (en) | 1976-11-12 |
Family
ID=9118676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7315624A Granted FR2228036A1 (en) | 1973-05-02 | 1973-05-02 | Treatment of waste water and gases contg. sulphites - converting by oxidn. to sulphates with metallic iron as catalyst |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5734037B2 (en) |
BR (1) | BR7403529D0 (en) |
DE (1) | DE2419496A1 (en) |
ES (2) | ES425629A1 (en) |
FR (1) | FR2228036A1 (en) |
IT (1) | IT1015940B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104548914A (en) * | 2014-11-07 | 2015-04-29 | 浙江理工大学 | Method for comprehensively treating sulfur dioxide and printing and dyeing wastewater |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4582690A (en) * | 1984-08-06 | 1986-04-15 | University Of Waterloo | Oxidation of polythionates |
CL2018002442A1 (en) * | 2018-04-13 | 2018-10-12 | Jiangnan Environmental Prot Group Inc | Method and device for oxidizing a solution for ammonia desulfurization. |
-
1973
- 1973-05-02 FR FR7315624A patent/FR2228036A1/en active Granted
-
1974
- 1974-04-23 DE DE19742419496 patent/DE2419496A1/en not_active Ceased
- 1974-04-24 ES ES425629A patent/ES425629A1/en not_active Expired
- 1974-04-26 JP JP4671874A patent/JPS5734037B2/ja not_active Expired
- 1974-04-30 BR BR352974A patent/BR7403529D0/en unknown
- 1974-04-30 IT IT5071874A patent/IT1015940B/en active
-
1976
- 1976-04-13 ES ES446989A patent/ES446989A1/en not_active Expired
Non-Patent Citations (1)
Title |
---|
NEANT * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104548914A (en) * | 2014-11-07 | 2015-04-29 | 浙江理工大学 | Method for comprehensively treating sulfur dioxide and printing and dyeing wastewater |
Also Published As
Publication number | Publication date |
---|---|
ES425629A1 (en) | 1976-12-16 |
FR2228036B1 (en) | 1976-11-12 |
JPS5015358A (en) | 1975-02-18 |
ES446989A1 (en) | 1977-07-01 |
JPS5734037B2 (en) | 1982-07-20 |
DE2419496A1 (en) | 1974-11-21 |
IT1015940B (en) | 1977-05-20 |
BR7403529D0 (en) | 1974-12-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |