MD1649G2 - Procedeu de purificare a apelor reziduale de ionii metalelor grele - Google Patents
Procedeu de purificare a apelor reziduale de ionii metalelor grele Download PDFInfo
- Publication number
- MD1649G2 MD1649G2 MD99-0123A MD990123A MD1649G2 MD 1649 G2 MD1649 G2 MD 1649G2 MD 990123 A MD990123 A MD 990123A MD 1649 G2 MD1649 G2 MD 1649G2
- Authority
- MD
- Moldova
- Prior art keywords
- purification
- heavy metals
- metals ions
- waste waters
- waste water
- Prior art date
Links
- 238000000746 purification Methods 0.000 title abstract 5
- 239000002351 wastewater Substances 0.000 title abstract 4
- 229910001385 heavy metal Inorganic materials 0.000 title abstract 3
- 150000002500 ions Chemical class 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
Invenţia se referă la procedeele de purificare a apelor reziduale de ionii metalelor grele.Esenţa invenţiei constă în aceea că se propune un procedeu de purificare a apelor reziduale de ionii metalelor grele, care include tratarea lor la pH 6…8 cu reagenţi reducători în următorul raport, mol/L:borhidrură de sodiu 0,05…0,06hipofosfit de sodiu 0,25…0,30aldehidă formică 0,60… 0,70hidrat de hidrazină 0,30… 0,40.Procedeul de purificare se efectuează în fluxul de ape reziduale la o viteză liniară a fluxului de apă de 0,2…0,3 m/min şi o densitate volumetrică a fluxului termic de 20…30 W/dm3 generat de câmpul electromagnetic cu frecvenţa 60…74 kHz pe suprafaţa catalizatorului. În calitate de catalizator se foloseşte aliajul Ni-Zn, care se obţine prin procesul electrochimic de sedimentare pe suprafaţa plasei de oţel cu mărimea celulei 0,5…2,0 mm. Dozarea reagenţilor reducători se realizează în raportul masic de (1,5…2,0) : 1 la conţinutul total de ioni ai metalelor grele.Rezultatul constă în sporirea gradului de purificare a apelor reziduale şi în micşorarea consumului de materiale şi energie pentru realizarea procesului de purificare.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MD99-0123A MD1649G2 (ro) | 1999-03-17 | 1999-03-17 | Procedeu de purificare a apelor reziduale de ionii metalelor grele |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MD99-0123A MD1649G2 (ro) | 1999-03-17 | 1999-03-17 | Procedeu de purificare a apelor reziduale de ionii metalelor grele |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| MD990123A MD990123A (ro) | 2000-11-30 |
| MD1649F2 MD1649F2 (ro) | 2001-04-30 |
| MD1649G2 true MD1649G2 (ro) | 2001-10-31 |
Family
ID=19739380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MD99-0123A MD1649G2 (ro) | 1999-03-17 | 1999-03-17 | Procedeu de purificare a apelor reziduale de ionii metalelor grele |
Country Status (1)
| Country | Link |
|---|---|
| MD (1) | MD1649G2 (ro) |
-
1999
- 1999-03-17 MD MD99-0123A patent/MD1649G2/ro unknown
Non-Patent Citations (2)
| Title |
|---|
| Пикага А.К., Жукаускайте А.А. Регенерация ценных компонентов из отработанных растворов химической металлизации и промывных вод и их обезвреживание. Mатериалы Республиканской Научно-технической конференции, 1985 г., с.120-121 * |
| Смирнов Д.Н., Генкин В.Е. Очистка сточных вод в процессах обработки металлов.М: Металлургия, 1980, 196 с. * |
Also Published As
| Publication number | Publication date |
|---|---|
| MD1649F2 (ro) | 2001-04-30 |
| MD990123A (ro) | 2000-11-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PD99 | Pending application |