CS202546B2 - Chromates containing waste water treatment - Google Patents
Chromates containing waste water treatment Download PDFInfo
- Publication number
- CS202546B2 CS202546B2 CS753094A CS309475A CS202546B2 CS 202546 B2 CS202546 B2 CS 202546B2 CS 753094 A CS753094 A CS 753094A CS 309475 A CS309475 A CS 309475A CS 202546 B2 CS202546 B2 CS 202546B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- iron
- reduction zone
- waters
- waste water
- electropositive
- Prior art date
Links
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 title claims abstract description 6
- 238000004065 wastewater treatment Methods 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 51
- 229910052742 iron Inorganic materials 0.000 claims abstract description 21
- 239000003643 water by type Substances 0.000 claims abstract description 5
- 238000000746 purification Methods 0.000 claims abstract description 4
- 239000008187 granular material Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000002351 wastewater Substances 0.000 claims description 6
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 claims description 3
- 229910001430 chromium ion Inorganic materials 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract description 2
- 238000006722 reduction reaction Methods 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 239000011324 bead Substances 0.000 abstract 1
- 229910001385 heavy metal Inorganic materials 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 150000002736 metal compounds Chemical class 0.000 abstract 1
- 239000011651 chromium Substances 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910000510 noble metal Inorganic materials 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000008371 chromenes Chemical class 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002730 mercury Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
- C02F1/705—Reduction by metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/467—Foam spreading or levelling devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
- B29C44/588—Moulds with means for venting, e.g. releasing foaming gas
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/006—Degassing moulding material or draining off gas during moulding
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Removal Of Specific Substances (AREA)
- Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT22396/74A IT1010486B (it) | 1974-05-08 | 1974-05-08 | Procedimento per la depurazione delle acque di scarico |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS202546B2 true CS202546B2 (en) | 1981-01-30 |
Family
ID=11195718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS753094A CS202546B2 (en) | 1974-05-08 | 1975-05-05 | Chromates containing waste water treatment |
Country Status (23)
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2613128C2 (de) * | 1976-03-27 | 1982-03-04 | Hoechst Ag, 6000 Frankfurt | Verfahren zur Verminderung des Quecksilbergehaltes von Betriebsabwässern |
| DE3321451A1 (de) * | 1982-06-16 | 1983-12-22 | Occidental Chemical Corp., 48089 Warren, Mich. | Vorrichtung und verfahren zum entfernen von kupferionen aus waessrigen loesungen |
| DE3411228C1 (de) * | 1984-03-27 | 1985-05-30 | Du Pont de Nemours (Deutschland) GmbH, 4000 Düsseldorf | Verfahren zur umweltfreundlichen Reinigung von photographischem Waschwasser aus Filmverarbeitungsmaschinen und Vorrichtung zur Durchführung des Verfahrens |
| DE4217987A1 (de) * | 1992-05-30 | 1993-12-02 | Battelle Institut E V | Verfahren zur Abtrennung von Schwermetallen, insbesondere in Form von Quecksilber, Nickel und Kobalt sowie Verbindungen hiervon aus dem Erdreich, Schlämmen und Wässern |
| WO1994006717A1 (en) * | 1992-09-18 | 1994-03-31 | I. Krüger Systems As | Method for the purification of metal-containing aqueous media and method of preparing an adsorbent |
| DE102007045337B4 (de) * | 2007-09-22 | 2021-01-07 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zum Schutz vor Chrom(VI)-haltigem Staub |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2177656B1 (enrdf_load_stackoverflow) * | 1972-03-31 | 1979-02-16 | Lewandowski Raymond |
-
1974
- 1974-05-08 IT IT22396/74A patent/IT1010486B/it active
-
1975
- 1975-04-11 IL IL47073A patent/IL47073A/xx unknown
- 1975-04-17 FI FI751142A patent/FI751142A7/fi not_active Application Discontinuation
- 1975-04-23 YU YU01039/75A patent/YU103975A/xx unknown
- 1975-04-25 GB GB1736975A patent/GB1474145A/en not_active Expired
- 1975-04-28 IE IE946/75A patent/IE41336B1/xx unknown
- 1975-04-28 CH CH541075A patent/CH617642A5/it not_active IP Right Cessation
- 1975-04-29 TR TR19213A patent/TR19213A/xx unknown
- 1975-04-29 BE BE155938A patent/BE828570A/xx unknown
- 1975-05-05 CS CS753094A patent/CS202546B2/cs unknown
- 1975-05-05 PL PL1975180173A patent/PL111038B1/pl unknown
- 1975-05-05 DK DK196775A patent/DK196775A/da unknown
- 1975-05-05 RO RO7582142A patent/RO69366A/ro unknown
- 1975-05-06 NO NO751626A patent/NO751626L/no unknown
- 1975-05-06 DD DD185871A patent/DD118051A5/xx unknown
- 1975-05-06 SE SE7505290A patent/SE7505290L/xx unknown
- 1975-05-06 FR FR7514128A patent/FR2270209B1/fr not_active Expired
- 1975-05-07 LU LU72427A patent/LU72427A1/xx unknown
- 1975-05-07 ES ES437875A patent/ES437875A1/es not_active Expired
- 1975-05-07 AT AT351775A patent/AT346253B/de not_active IP Right Cessation
- 1975-05-07 DE DE19752520531 patent/DE2520531A1/de active Pending
- 1975-05-08 JP JP50054324A patent/JPS50152557A/ja active Pending
- 1975-05-09 NL NL7505514A patent/NL7505514A/xx not_active Application Discontinuation
-
1976
- 1976-05-28 AT AT390876A patent/AT351775B/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| LU72427A1 (enrdf_load_stackoverflow) | 1975-08-26 |
| GB1474145A (en) | 1977-05-18 |
| IE41336L (en) | 1975-11-08 |
| FR2270209B1 (enrdf_load_stackoverflow) | 1980-04-18 |
| RO69366A (ro) | 1981-07-30 |
| AU8013875A (en) | 1976-10-21 |
| YU103975A (en) | 1982-02-28 |
| AT351775B (de) | 1978-02-15 |
| NO751626L (enrdf_load_stackoverflow) | 1975-11-11 |
| IL47073A (en) | 1978-07-31 |
| IT1010486B (it) | 1977-01-10 |
| BE828570A (fr) | 1975-08-18 |
| JPS50152557A (enrdf_load_stackoverflow) | 1975-12-08 |
| TR19213A (tr) | 1978-06-07 |
| DE2520531A1 (de) | 1975-11-13 |
| ATA390876A (de) | 1979-01-15 |
| CH617642A5 (en) | 1980-06-13 |
| DD118051A5 (enrdf_load_stackoverflow) | 1976-02-12 |
| IL47073A0 (en) | 1975-06-25 |
| DK196775A (da) | 1975-11-09 |
| ATA351775A (de) | 1978-02-15 |
| FI751142A7 (enrdf_load_stackoverflow) | 1975-11-09 |
| SE7505290L (sv) | 1975-11-10 |
| NL7505514A (nl) | 1975-11-11 |
| FR2270209A1 (enrdf_load_stackoverflow) | 1975-12-05 |
| PL111038B1 (en) | 1980-08-30 |
| IE41336B1 (en) | 1979-12-05 |
| AT346253B (de) | 1978-11-10 |
| ES437875A1 (es) | 1977-01-01 |
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