IE36316B1 - A process for the purification of waste waters - Google Patents
A process for the purification of waste watersInfo
- Publication number
- IE36316B1 IE36316B1 IE532/72A IE53272A IE36316B1 IE 36316 B1 IE36316 B1 IE 36316B1 IE 532/72 A IE532/72 A IE 532/72A IE 53272 A IE53272 A IE 53272A IE 36316 B1 IE36316 B1 IE 36316B1
- Authority
- IE
- Ireland
- Prior art keywords
- liquor
- liquors
- metal
- april
- bed
- Prior art date
Links
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
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46176—Galvanic cells
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Removal Of Specific Substances (AREA)
- Water Treatment By Sorption (AREA)
Abstract
1376998 Treating waste liquors SNAM PROGETTI SpA 21 April 1972 [23 April 1971 7 May 1971] 18740/72 Heading C1C [Also in Division C7] A process for purifying aqueous waste liquor containing ions comprising metal in a first valency state which metal is capable of reduction to a second and lower valency state comprises contacting the liquor at an acid pH with an electrode couple comprising anode material which is electropositive with respect to hydrogen and a cathode material which is less electropositive than the anode material or electronegative with respect to hydrogen, the materials being in contact in the liquor or being electrically connected inside or outside the liquor. The liquor may be passed through a bed of contacting grains or small bodies of the electrode materials or treated in a vessel containing electrodes (e.g. plates, bars or rods) separated by a porous membrane. The cathode may be C, Hg, Cu amalgam or C impregnated with Hg; the anode, Fe, Zn, Ni, Sn, Pb or Cr. The purifying process may comprise a precipitating or flocculating step in which alkali is used. Ethylenediaminetetracetic acid may be used in the process. In the treatment of mercury salt liquors, the liquor after treatment with the electrode couple may be passed through a bed of Cu turnings. The metal may be removed from the liquor in its elementary state or in the form of an insoluble product. The process may be used to treat chromate liquors from steel anodizing and chromium plating processes, mercuric chloride and sulphate liquors obtained in chemical making processes and copper sulphate liquors.
[GB1376998A]
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2354971 | 1971-04-23 | ||
| IT2420571 | 1971-05-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE36316L IE36316L (en) | 1972-10-23 |
| IE36316B1 true IE36316B1 (en) | 1976-10-13 |
Family
ID=26328395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE532/72A IE36316B1 (en) | 1971-04-23 | 1972-04-21 | A process for the purification of waste waters |
Country Status (24)
| Country | Link |
|---|---|
| JP (1) | JPS5235945B1 (en) |
| AT (1) | AT324969B (en) |
| BE (1) | BE782358A (en) |
| CA (1) | CA1028278A (en) |
| CH (1) | CH539001A (en) |
| CS (1) | CS178869B2 (en) |
| DD (1) | DD96694A5 (en) |
| DE (1) | DE2219095A1 (en) |
| DK (1) | DK142049C (en) |
| ES (1) | ES402789A1 (en) |
| FI (1) | FI62810C (en) |
| FR (1) | FR2133922B1 (en) |
| GB (1) | GB1376998A (en) |
| HU (1) | HU164830B (en) |
| IE (1) | IE36316B1 (en) |
| IL (1) | IL39131A (en) |
| LU (1) | LU65207A1 (en) |
| NL (1) | NL153829B (en) |
| NO (1) | NO139679C (en) |
| PL (1) | PL83655B1 (en) |
| RO (1) | RO63778A (en) |
| SE (1) | SE386153B (en) |
| TR (1) | TR17282A (en) |
| YU (1) | YU36674B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2430848C2 (en) * | 1974-06-27 | 1986-02-27 | Levrini, Valter, Castellarano | Process for the chemical purification of waste water |
| CH649976A5 (en) * | 1981-03-05 | 1985-06-28 | Hans Lueber | DEVICE FOR LIMESTONE PREVENTION IN WATER TANKS. |
| US4525254A (en) * | 1982-10-07 | 1985-06-25 | Gosudarstvenny Nauchno-Issledovatelsky I Proektny Institut Po Obogascheniju Rud Tsvetnykh Metallov "Kazmekhanobr" | Process and apparatus for purifying effluents and liquors |
| DE10005681B4 (en) * | 2000-02-07 | 2005-06-16 | Atc Dr. Mann E.K. | Method and device for the decontamination of metal-containing waters |
| CN115418483B (en) * | 2022-08-30 | 2023-06-30 | 中南大学 | Method for preparing ferrochrome from chromium-containing waste liquid |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1459451A1 (en) * | 1962-05-29 | 1968-12-19 | Asendorf Dr Erich | Process for removing copper from sulfuric acid and nitric acid waste water with simultaneous destruction of water-insoluble copper compounds |
| AT240059B (en) * | 1963-08-02 | 1965-05-10 | Donau Chemie Ag | Process for the electrolytic deposition of sulfo-salt-forming metals |
| US3392102A (en) * | 1967-03-16 | 1968-07-09 | Koch Rudolf | Galvanic action water purifier |
-
1972
- 1972-04-03 IL IL39131A patent/IL39131A/en unknown
- 1972-04-19 NO NO1361/72A patent/NO139679C/en unknown
- 1972-04-19 YU YU1051/72A patent/YU36674B/en unknown
- 1972-04-19 DE DE19722219095 patent/DE2219095A1/en active Pending
- 1972-04-20 FR FR7213901A patent/FR2133922B1/fr not_active Expired
- 1972-04-20 BE BE782358A patent/BE782358A/en not_active IP Right Cessation
- 1972-04-21 LU LU65207D patent/LU65207A1/xx unknown
- 1972-04-21 IE IE532/72A patent/IE36316B1/en unknown
- 1972-04-21 CA CA140,318A patent/CA1028278A/en not_active Expired
- 1972-04-21 HU HUSA2348A patent/HU164830B/hu unknown
- 1972-04-21 FI FI1138/72A patent/FI62810C/en active
- 1972-04-21 GB GB1874072A patent/GB1376998A/en not_active Expired
- 1972-04-21 DK DK197372A patent/DK142049C/en not_active IP Right Cessation
- 1972-04-21 RO RO7200070638A patent/RO63778A/en unknown
- 1972-04-21 DD DD162482A patent/DD96694A5/xx unknown
- 1972-04-21 PL PL1972154899A patent/PL83655B1/pl unknown
- 1972-04-21 SE SE7205294A patent/SE386153B/en unknown
- 1972-04-21 CS CS7200002717A patent/CS178869B2/en unknown
- 1972-04-22 CH CH592572A patent/CH539001A/en not_active IP Right Cessation
- 1972-04-22 ES ES402789A patent/ES402789A1/en not_active Expired
- 1972-04-24 AT AT360072A patent/AT324969B/en not_active IP Right Cessation
- 1972-04-24 TR TR17282A patent/TR17282A/en unknown
- 1972-04-24 NL NL727205539A patent/NL153829B/en not_active IP Right Cessation
- 1972-04-24 JP JP47040486A patent/JPS5235945B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| TR17282A (en) | 1975-03-24 |
| RO63778A (en) | 1978-10-15 |
| SE386153B (en) | 1976-08-02 |
| IL39131A (en) | 1975-08-31 |
| BE782358A (en) | 1972-08-16 |
| NL7205539A (en) | 1972-10-25 |
| GB1376998A (en) | 1974-12-11 |
| NO139679B (en) | 1979-01-15 |
| NL153829B (en) | 1977-07-15 |
| CS178869B2 (en) | 1977-10-31 |
| CA1028278A (en) | 1978-03-21 |
| YU36674B (en) | 1984-08-31 |
| DK142049B (en) | 1980-08-18 |
| JPS5235945B1 (en) | 1977-09-12 |
| AT324969B (en) | 1975-09-25 |
| PL83655B1 (en) | 1975-12-31 |
| DD96694A5 (en) | 1973-04-05 |
| CH539001A (en) | 1973-07-15 |
| YU105172A (en) | 1982-02-25 |
| HU164830B (en) | 1974-04-11 |
| DE2219095A1 (en) | 1972-11-16 |
| FR2133922A1 (en) | 1972-12-01 |
| NO139679C (en) | 1979-04-25 |
| IE36316L (en) | 1972-10-23 |
| FI62810C (en) | 1983-03-10 |
| FR2133922B1 (en) | 1974-10-18 |
| LU65207A1 (en) | 1972-07-13 |
| FI62810B (en) | 1982-11-30 |
| ES402789A1 (en) | 1975-10-16 |
| DK142049C (en) | 1981-01-12 |
| IL39131A0 (en) | 1972-06-28 |
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