MD488G2 - Process of extraction of heavy metals from the drainage water precipitations - Google Patents
Process of extraction of heavy metals from the drainage water precipitationsInfo
- Publication number
- MD488G2 MD488G2 MD96-0033A MD960033A MD488G2 MD 488 G2 MD488 G2 MD 488G2 MD 960033 A MD960033 A MD 960033A MD 488 G2 MD488 G2 MD 488G2
- Authority
- MD
- Moldova
- Prior art keywords
- extraction
- heavy metals
- metals
- carried out
- reductants
- Prior art date
Links
- 238000000605 extraction Methods 0.000 title abstract 4
- 229910001385 heavy metal Inorganic materials 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 3
- 238000001556 precipitation Methods 0.000 title abstract 3
- 239000003657 drainage water Substances 0.000 title abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 4
- -1 anhydride sulfide Chemical class 0.000 abstract 2
- 239000003153 chemical reaction reagent Substances 0.000 abstract 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 238000004090 dissolution Methods 0.000 abstract 2
- 150000002506 iron compounds Chemical class 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 abstract 1
- HPYIMVBXZPJVBV-UHFFFAOYSA-N barium(2+);iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Ba+2] HPYIMVBXZPJVBV-UHFFFAOYSA-N 0.000 abstract 1
- MOOAHMCRPCTRLV-UHFFFAOYSA-N boron sodium Chemical compound [B].[Na] MOOAHMCRPCTRLV-UHFFFAOYSA-N 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 238000009877 rendering Methods 0.000 abstract 1
- 239000010865 sewage Substances 0.000 abstract 1
- 229910001379 sodium hypophosphite Inorganic materials 0.000 abstract 1
Landscapes
- Removal Of Specific Substances (AREA)
- Treatment Of Sludge (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to the technology of treatment and utilization of compound sludges comprising multicomponent hydroxide precipitation of heavy metals and may be used at industrial enterprises having galvanic productions.The summary of the invention consists in the fact that in the proposed process of extraction of heavy metals from the drainage water precipitations by dissolution thereof in the sulfuric acid and subsequent reagent extraction, the dissolution in the sulfuric acid is carried out with an additional treatment by means of gaseous anhydride sulfide taken in stoichiometric quantity to the quantitative content of iron compounds (III) and attainment of pH treated medium to 4,5-6,5, and as reagents for metals extraction is used a mixture of reductants: sodium hypophosphite and sodium borane at their rate (5-10):1 and the process is carried out in a canal having a linear rate of 0,05-0,1 m/min. for the superposition of r.f. current at specific power expenses of 1,5-2,0 kJ/dm3 and magneto-liquefaction of the treated medium carried out at the expense of the spherical bodies heavy traffic, sintered of barium hexaferrite and magnetized till saturation. For that the introduced quantity of reagent-reductants mixture to the summary content of ion metals into the solution consists of (1,5-2,0):1 from the reaction stoichiometry of restoration thereof.The technical result of the invention consists in rendering harmless of the sewage slime, comprising compounds of heavy metals by restoration thereof to the common state in a dispersed form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MD96-0033A MD488G2 (en) | 1996-02-21 | 1996-02-21 | Process of extraction of heavy metals from the drainage water precipitations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MD96-0033A MD488G2 (en) | 1996-02-21 | 1996-02-21 | Process of extraction of heavy metals from the drainage water precipitations |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MD488F1 MD488F1 (en) | 1996-10-31 |
| MD488G2 true MD488G2 (en) | 1997-05-31 |
Family
ID=19738791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MD96-0033A MD488G2 (en) | 1996-02-21 | 1996-02-21 | Process of extraction of heavy metals from the drainage water precipitations |
Country Status (1)
| Country | Link |
|---|---|
| MD (1) | MD488G2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD1173G2 (en) * | 1998-04-24 | 2000-02-29 | Государственный Университет Молд0 | Process for extraction of nonferrous metals from sewage sludges |
-
1996
- 1996-02-21 MD MD96-0033A patent/MD488G2/en active IP Right Grant
Non-Patent Citations (2)
| Title |
|---|
| Бунин В.И. и др. "Технология переработки шламов сложного состава гальванических и травильных производств" в сб. "Охрана окружающей среды от отходов гальванического производства", 1990 г., МДНТП, М., c.124-125. * |
| Степанчикова И.Г. "Создание региональных центров по переработке осадков от процессов очистки сточных вод гальванических производств" в сб. "Обработка и утилизация осадков от промышленных вод машиностроительных предприятий." 1992 г., Центр. Рос. дом знаний, М., c.51-53. * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD1173G2 (en) * | 1998-04-24 | 2000-02-29 | Государственный Университет Молд0 | Process for extraction of nonferrous metals from sewage sludges |
Also Published As
| Publication number | Publication date |
|---|---|
| MD488F1 (en) | 1996-10-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG3A | Granted patent for invention | ||
| IF99 | Valid patent on 19990615 |
Free format text: EXPIRES: 20160221 |