GB1340505A - Treatment of aluminium-containing waste solutions - Google Patents
Treatment of aluminium-containing waste solutionsInfo
- Publication number
- GB1340505A GB1340505A GB4494270A GB4494270A GB1340505A GB 1340505 A GB1340505 A GB 1340505A GB 4494270 A GB4494270 A GB 4494270A GB 4494270 A GB4494270 A GB 4494270A GB 1340505 A GB1340505 A GB 1340505A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- aluminium hydroxide
- alkaline
- drag
- solution
- 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
- 239000004411 aluminium Substances 0.000 title abstract 2
- 229910052782 aluminium Inorganic materials 0.000 title abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title abstract 2
- 239000002699 waste material Substances 0.000 title abstract 2
- 239000000243 solution Substances 0.000 abstract 11
- 238000005406 washing Methods 0.000 abstract 9
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract 6
- 229910021502 aluminium hydroxide Inorganic materials 0.000 abstract 6
- 239000002253 acid Substances 0.000 abstract 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 239000002244 precipitate Substances 0.000 abstract 2
- 239000001117 sulphuric acid Substances 0.000 abstract 2
- 235000011149 sulphuric acid Nutrition 0.000 abstract 2
- 238000010306 acid treatment Methods 0.000 abstract 1
- 239000003929 acidic solution Substances 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 abstract 1
- 239000012670 alkaline solution Substances 0.000 abstract 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 1
- 239000000920 calcium hydroxide Substances 0.000 abstract 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 1
- 239000003518 caustics Substances 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 239000011369 resultant mixture 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
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- ing And Chemical Polishing (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
1340505 Treating waste liquors LANCY LABORATORIES Inc 21 Dec 1970 [3 Feb 1970] 44942/70 Heading C1C In a process for modifying an aluminium workpiece comprising treating the workpiece with alkaline treatment solution and/or acid treatment solution and washing the workpiece after the or each treatment to produce used washing solution(s) containing alkaline or acid drag-out, the used washing solution(s) is (are) reconditioned by precipitating aluminium hydroxide therefrom. The used washing solutions may be mixed prior to or during reconditioning. The precipitate may be removed periodically or continuously. The reconditioned washing solutions containing aluminium hydroxide may be heated to aid settling of the aluminium hydroxide. In one embodiment the washing solution containing alkaline drag-out is reduced to a pH of 6 or less by mineral acid and mixed with washing solution containing acid drag-out, and alkaline earth metal hydroxide is added thereto to increase the pH to at least 4À7 and to precipitate aluminium hydroxide. In another embodiment the washing solution containing alkaline drag-out is mixed with washing solution containing acid drag-out, additional acid, if necessary, is added to reduce the pH to 6 or less, and alkali is added to precipitate aluminium hydroxide. In the Figure the workpiece 9 is etched in a caustic solution, washed, rinsed, anodized in sulphuric acid, washed and rinsed. The alkaline solution from wash zone 11 is treated in zone 13 with sulphuric acid to reduce its pH to 6 or less and mixed with acidic solution from wash zone 27 and calcium hydroxide in zone 18. The resultant mixture containing precipitated aluminium hydroxide has a pH of at least 4À7. The mixture is heated by steam coil 33a. Precipitate is settled out in zone 34 and reconditioned liquid is returned to wash zones 11 and 27.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US817370A | 1970-02-03 | 1970-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1340505A true GB1340505A (en) | 1973-12-12 |
Family
ID=21730159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4494270A Expired GB1340505A (en) | 1970-02-03 | 1970-12-21 | Treatment of aluminium-containing waste solutions |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS51543B1 (en) |
| BR (1) | BR7100829D0 (en) |
| CH (1) | CH540352A (en) |
| DE (1) | DE2048445C3 (en) |
| FR (1) | FR2078223A5 (en) |
| GB (1) | GB1340505A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008063729A1 (en) | 2008-11-03 | 2010-05-06 | König, Thomas | Process for pickling workpiece made of aluminum or aluminum alloy that is subjected to a sting bath with an alkaline pickling solution, comprises continuous or sectional drawing-off a partial quantity of the pickling solution from the bath |
| WO2010060408A2 (en) | 2008-11-03 | 2010-06-03 | Koenig Thomas | Pickling method and pickling plant |
| DE102008062970A1 (en) | 2008-12-23 | 2010-07-01 | König, Thomas | Pickling process preparing aluminum components for anodizing, extracts pickling solution from pickling bath, separates solids, analyses permeate and adjusts it composition for recycling |
| IT202300015744A1 (en) * | 2023-07-26 | 2025-01-26 | Torino Politecnico | REGENERATION OF CHEMICAL BATHS USING REAGENTS AND PROCESSES WITH LOW ENVIRONMENTAL IMPACT |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5174842U (en) * | 1974-12-05 | 1976-06-12 | ||
| SU994445A1 (en) * | 1980-12-12 | 1983-02-07 | Управление Водопроводно-Канализационного Хозяйства "Водоканал" Ленгорисполкома | Method for treating effluent precipitates |
| JP5560094B2 (en) * | 2010-05-20 | 2014-07-23 | パナソニック株式会社 | Method for producing treatment agent for treating fluorine-containing water and method for treating fluorine-containing water using the same |
| DE102012108298B4 (en) * | 2012-05-23 | 2015-05-21 | Envirochemie Gmbh | Removal of aluminum from wash liquor |
| DE102013108375A1 (en) * | 2013-01-31 | 2014-07-31 | Thomas König | Process for the preparation of a pickling and / or anodizing bath and anodizing arrangement |
-
1970
- 1970-10-02 DE DE19702048445 patent/DE2048445C3/en not_active Expired
- 1970-12-03 JP JP45106356A patent/JPS51543B1/ja active Pending
- 1970-12-21 GB GB4494270A patent/GB1340505A/en not_active Expired
-
1971
- 1971-01-19 CH CH78871A patent/CH540352A/en not_active IP Right Cessation
- 1971-01-29 FR FR7103848A patent/FR2078223A5/fr not_active Expired
- 1971-02-03 BR BR82971A patent/BR7100829D0/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008063729A1 (en) | 2008-11-03 | 2010-05-06 | König, Thomas | Process for pickling workpiece made of aluminum or aluminum alloy that is subjected to a sting bath with an alkaline pickling solution, comprises continuous or sectional drawing-off a partial quantity of the pickling solution from the bath |
| WO2010060408A2 (en) | 2008-11-03 | 2010-06-03 | Koenig Thomas | Pickling method and pickling plant |
| DE102008062970A1 (en) | 2008-12-23 | 2010-07-01 | König, Thomas | Pickling process preparing aluminum components for anodizing, extracts pickling solution from pickling bath, separates solids, analyses permeate and adjusts it composition for recycling |
| IT202300015744A1 (en) * | 2023-07-26 | 2025-01-26 | Torino Politecnico | REGENERATION OF CHEMICAL BATHS USING REAGENTS AND PROCESSES WITH LOW ENVIRONMENTAL IMPACT |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2048445B2 (en) | 1978-07-13 |
| CH540352A (en) | 1973-08-15 |
| BR7100829D0 (en) | 1973-04-19 |
| DE2048445A1 (en) | 1971-08-12 |
| JPS51543B1 (en) | 1976-01-08 |
| DE2048445C3 (en) | 1979-03-22 |
| FR2078223A5 (en) | 1971-11-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PCNP | Patent ceased through non-payment of renewal fee |