MD2305C2 - Procedeu de separare consecutivă a metalelor grele din apele reziduale - Google Patents
Procedeu de separare consecutivă a metalelor grele din apele reziduale Download PDFInfo
- 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
- 238000000926 separation method Methods 0.000 title abstract 5
- 239000010865 sewage Substances 0.000 title abstract 5
- 239000002184 metal Substances 0.000 title abstract 4
- 229910052751 metal Inorganic materials 0.000 title abstract 4
- 150000002739 metals Chemical class 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 239000012670 alkaline solution Substances 0.000 abstract 2
- -1 Fe (III) ions Chemical class 0.000 abstract 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 abstract 1
- 230000001143 conditioned effect Effects 0.000 abstract 1
- 150000004679 hydroxides Chemical class 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- 239000013049 sediment Substances 0.000 abstract 1
- 238000006467 substitution reaction Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
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 |
|---|---|
| MD20010260A (ro) | 2003-03-31 |
| MD2305B2 (ro) | 2003-11-30 |
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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 |