GB1067293A - Treatment of waste liquor from pickling of ferrous metals - Google Patents
Treatment of waste liquor from pickling of ferrous metalsInfo
- Publication number
- GB1067293A GB1067293A GB3938364A GB3938364A GB1067293A GB 1067293 A GB1067293 A GB 1067293A GB 3938364 A GB3938364 A GB 3938364A GB 3938364 A GB3938364 A GB 3938364A GB 1067293 A GB1067293 A GB 1067293A
- Authority
- GB
- United Kingdom
- Prior art keywords
- limestone
- liquor
- pickling
- ferrous metals
- waste liquor
- 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.)
- Expired
Links
- 238000005554 pickling Methods 0.000 title abstract 3
- -1 ferrous metals Chemical class 0.000 title abstract 2
- 229910052751 metal Inorganic materials 0.000 title abstract 2
- 239000002184 metal Substances 0.000 title abstract 2
- 239000002699 waste material Substances 0.000 title abstract 2
- 235000019738 Limestone Nutrition 0.000 abstract 5
- 239000006028 limestone Substances 0.000 abstract 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 238000013019 agitation Methods 0.000 abstract 1
- 235000010216 calcium carbonate Nutrition 0.000 abstract 1
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910017604 nitric acid Inorganic materials 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide [Fe2O3]
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
- C02F1/64—Heavy metal compounds of iron or manganese
- C02F1/645—Devices for iron precipitation and treatment by air
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/203—Iron or iron compound
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The waste liquor from the acidic pickling of ferrous metals is treated by passing it through an agitated bed of limestone particles of such a size that 95-100% are retained on a No. 18 B.S. sieve, at such a rate that some finely divided limestone passes, with the liquor, to a second stage wherein the liquor is aerated until the pH of the clear liquor above the suspension of hydrated Fe2O3 is at least 6. The particle size of the limestone may also be such that 100% pass a B.S. plate of 3 inches square aperture. Limestone or CaCO3 may be added to the second stage. Agitation may be by means of a mechanical stirrer or by containing the limestone in a revolving drum. The hydrated Fe2O3 may be removed by filtering. The described embodiment is with sulphuric pickling liquors, but those with HF, HNO3, HCl and mixtures thereof are also disclosed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3938364A GB1067293A (en) | 1964-09-28 | 1964-09-28 | Treatment of waste liquor from pickling of ferrous metals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3938364A GB1067293A (en) | 1964-09-28 | 1964-09-28 | Treatment of waste liquor from pickling of ferrous metals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1067293A true GB1067293A (en) | 1967-05-03 |
Family
ID=10409252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3938364A Expired GB1067293A (en) | 1964-09-28 | 1964-09-28 | Treatment of waste liquor from pickling of ferrous metals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1067293A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0101126A2 (en) * | 1982-08-18 | 1984-02-22 | Metallgesellschaft Ag | Process for treating waste pickling pastes |
| FR2612528A1 (en) * | 1987-03-18 | 1988-09-23 | Chimiderouil | Process for the surface treatment of articles, especially metal ones |
| CN104016523A (en) * | 2014-06-24 | 2014-09-03 | 重庆华绿环保科技发展有限责任公司 | Treatment device and treatment method of acid washing iron-containing wastewater |
-
1964
- 1964-09-28 GB GB3938364A patent/GB1067293A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0101126A2 (en) * | 1982-08-18 | 1984-02-22 | Metallgesellschaft Ag | Process for treating waste pickling pastes |
| EP0101126A3 (en) * | 1982-08-18 | 1984-03-21 | Metallgesellschaft Ag | Process for treating waste pickling pastes |
| FR2612528A1 (en) * | 1987-03-18 | 1988-09-23 | Chimiderouil | Process for the surface treatment of articles, especially metal ones |
| CN104016523A (en) * | 2014-06-24 | 2014-09-03 | 重庆华绿环保科技发展有限责任公司 | Treatment device and treatment method of acid washing iron-containing wastewater |
| CN104016523B (en) * | 2014-06-24 | 2015-10-21 | 重庆华绿环保科技发展有限责任公司 | A kind for the treatment of unit of pickling iron content waste water and treatment process |
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