MD2305C2 - Procedeu de separare consecutivă a metalelor grele din apele reziduale - Google Patents
Procedeu de separare consecutivă a metalelor grele din apele rezidualeInfo
- Publication number
- MD2305C2 MD2305C2 MDA20010260A MD20010260A MD2305C2 MD 2305 C2 MD2305 C2 MD 2305C2 MD A20010260 A MDA20010260 A MD A20010260A MD 20010260 A MD20010260 A MD 20010260A MD 2305 C2 MD2305 C2 MD 2305C2
- Authority
- MD
- Moldova
- Prior art keywords
- sewage
- separation
- hard metals
- iii
- ions
- Prior art date
Links
Landscapes
- Removal Of Specific Substances (AREA)
Abstract
Invenţia se referă la o tehnologie de separare a metalelor grele din apele reziduale, utilizând deşeurile producţiilor galvanice.Esenţa invenţiei constă în aceea că se propune un procedeu de separare a metalelor grele din apele reziduale, care include adăugarea unei soluţii alcaline şi precipitarea metalelor grele sub formă de hidroxizi la pH 4,8...5,4, înlăturarea sedimentului format, unde înainte de adăugarea soluţiei alcaline în apele reziduale se introduce fier metalic într-o cantitate de 5...10 ori mai mare decât cantitatea stoechiometrică necesară pentru substituirea Cu din apele reziduale, asigurând într-un singur proces separarea completă a ionilor de Cu, precum şi a ionilor de Al(III) şi Fe(III), separarea celor din urmă fiind condiţionată de oxidarea prealabilă a Fe(II) în Fe(III).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDA20010260A MD2305C2 (ro) | 2001-08-13 | 2001-08-13 | Procedeu de separare consecutivă a metalelor grele din apele reziduale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDA20010260A MD2305C2 (ro) | 2001-08-13 | 2001-08-13 | Procedeu de separare consecutivă a metalelor grele din apele reziduale |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| MD20010260A MD20010260A (ro) | 2003-03-31 |
| MD2305B2 MD2305B2 (ro) | 2003-11-30 |
| MD2305C2 true MD2305C2 (ro) | 2004-05-31 |
Family
ID=19739929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MDA20010260A MD2305C2 (ro) | 2001-08-13 | 2001-08-13 | Procedeu de separare consecutivă a metalelor grele din apele reziduale |
Country Status (1)
| Country | Link |
|---|---|
| MD (1) | MD2305C2 (ro) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5128047A (en) * | 1990-04-20 | 1992-07-07 | Rhone-Poulenc Inc. | Sequential separation of metals by controlled pH precipitation |
| SU1794059A3 (ru) * | 1990-07-17 | 1993-02-07 | Дheпpoпetpobckий Xиmиko-Texhoлoгичeckий Иhctиtуt | Cпocoб oчиctkи ctoчhыx boд |
-
2001
- 2001-08-13 MD MDA20010260A patent/MD2305C2/ro not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5128047A (en) * | 1990-04-20 | 1992-07-07 | Rhone-Poulenc Inc. | Sequential separation of metals by controlled pH precipitation |
| SU1794059A3 (ru) * | 1990-07-17 | 1993-02-07 | Дheпpoпetpobckий Xиmиko-Texhoлoгичeckий Иhctиtуt | Cпocoб oчиctkи ctoчhыx boд |
Also Published As
| Publication number | Publication date |
|---|---|
| MD2305B2 (ro) | 2003-11-30 |
| MD20010260A (ro) | 2003-03-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| KA4A | Patent for invention lapsed due to non-payment of fees (with right of restoration) | ||
| MM4A | Patent for invention definitely lapsed due to non-payment of fees |