PL151407B2 - Sewage treatment process - Google Patents
Sewage treatment processInfo
- Publication number
- PL151407B2 PL151407B2 PL27239288A PL27239288A PL151407B2 PL 151407 B2 PL151407 B2 PL 151407B2 PL 27239288 A PL27239288 A PL 27239288A PL 27239288 A PL27239288 A PL 27239288A PL 151407 B2 PL151407 B2 PL 151407B2
- Authority
- PL
- Poland
- Prior art keywords
- treatment process
- sewage treatment
- compounds
- hexavalent chromium
- solutions
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 7
- 239000010865 sewage Substances 0.000 title description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical class [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 5
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 125000000896 monocarboxylic acid group Chemical group 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 claims description 3
- 235000010262 sodium metabisulphite Nutrition 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004296 sodium metabisulphite Substances 0.000 claims description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims 1
- 239000004615 ingredient Substances 0.000 claims 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- TYNLGDBUJLVSMA-UHFFFAOYSA-N 4,5-diacetyloxy-9,10-dioxo-2-anthracenecarboxylic acid Chemical compound O=C1C2=CC(C(O)=O)=CC(OC(C)=O)=C2C(=O)C2=C1C=CC=C2OC(=O)C TYNLGDBUJLVSMA-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229940001584 sodium metabisulfite Drugs 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Description
RZECZPOSPOLITA OPIS PATENTOWY POLSKA PATENTU TYMCZASOWEGOREPUBLIC PATENT DESCRIPTION POLAND OF THE PROVISIONAL PATENT
Patent tymczasowy dodatkowy do patentu nr--Zgłoszono: 88 05 10 (P. 272392)Provisional patent additional to the patent No. - Pending: 88 05 10 (P. 272392)
151 407151 407
Int. Cl.5 C02F 1/52 C02F 1/62Int. Cl. 5 C02F 1/52 C02F 1/62
URZĄDOFFICE
PATENTOWYPATENT
RPRP
Pierwszeństwo--Zgłoszenie ogłoszono: 89 02 20Priority - Application announced: 89 02 20
Opis patentowy opublikowano: 1991 02 28Patent description published: 1991 02 28
Twórca wynalazku: Stefan GreflingInventor: Stefan Grefling
Uprawniony z patentu tymczasowego: Zakłady Radiowe „DIORA“ Ośrodek Projektowania i Wdrożeń Radiofonii Odbiorczej,Authorized by a temporary patent: Zakłady Radiowe "DIORA" Center for Design and Implementation of Radio Receiving,
Dzierżoniów (Polska)Dzierżoniów (Poland)
Sposób oczyszczania ściekówWastewater treatment method
Przedmiotem wynalazku jest sposób oczyszczania ścieków lub roztworów ze związków chromu sześciowartościowego.The subject of the invention is a method of purifying wastewater or solutions from hexavalent chromium compounds.
Znane sposoby oczyszczania ścieków lub roztworów, które zawierają związki chromu sześciowartościowego, charakteryzują się tym, że związki te neutralizuje się pirosiarczynem sodu Na2S2C>5. Sposób oczyszczania ścieków lub roztworów ze związków chromu sześciowartościowego, według wynalazku polega na tym, że związki te redukuje się roztworem, który sporządza się ze 100 g kwasu szczawiowego /COOH/2 i 33 g tiomocznika CS/NH2/2, rozpuszczając te składniki w 11 wody.Known methods of wastewater treatment or solutions containing hexavalent chromium compounds are characterized by the fact that these compounds are neutralized with sodium metabisulfite Na2S2C> 5. The method of treating wastewater or solutions from hexavalent chromium compounds, according to the invention, consists in reducing these compounds with a solution which is prepared from 100 g of oxalic acid / COOH / 2 and 33 g of CS / NH2 / 2 thiourea, dissolving these components in 11 water.
Zaletą opisanego powyżej sposobu oczyszczania ścieków lub roztworów ze związków chromu sześciowartościowego jest to, że czterokrotnie zmniejsza on ilość tworzących się siarczanów, które powstają przy stosowaniu pirosiarczynu sodu Na2S2Os i dzięki temu sposób ten zapewnia nieprzekraczanie dopuszczalnych ilości tych siarczanów w ściekach, których ogólne zasolenie zmniejsza się do wartości nieszkodliwych dla kanalizacyjnych urządzeń miejskich, co także wpływa na poprawę ochrony środowiska.The advantage of the above-described method of treating wastewater or solutions from hexavalent chromium compounds is that it reduces by a factor of four the amount of sulphates formed when sodium metabisulphite Na2S2Os is used, and thus this method ensures that the permissible amounts of these sulphates are not exceeded in the sewage, the total salinity of which is reduced to values that are harmless to municipal sewage systems, which also improves environmental protection.
Do zbiornika o pojemności 17m3 ścieków z zawartością chromu sześciowartościowego o stężeniu wynoszącym 330 mg/dm3 wlewa się 400 dm3 roztworu redukującego, który w 11 wody zawiera 100 g kwasu szczawiowego /COOH/2 oraz 33 g tiomocznika CS/NH2/2.400 dm 3 of reducing solution, which contains 100 g of oxalic acid / COOH / 2 and 33 g of CS / NH2 / 2 thiourea in 11 of water, is poured into a tank with a capacity of 17 m3 of wastewater with the content of hexavalent chromium at a concentration of 330 mg / dm 3 .
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL27239288A PL151407B2 (en) | 1988-05-10 | 1988-05-10 | Sewage treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL27239288A PL151407B2 (en) | 1988-05-10 | 1988-05-10 | Sewage treatment process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL272392A2 PL272392A2 (en) | 1989-02-20 |
| PL151407B2 true PL151407B2 (en) | 1990-08-31 |
Family
ID=20042103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL27239288A PL151407B2 (en) | 1988-05-10 | 1988-05-10 | Sewage treatment process |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL151407B2 (en) |
-
1988
- 1988-05-10 PL PL27239288A patent/PL151407B2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL272392A2 (en) | 1989-02-20 |
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