FR2259147A2 - - Google Patents
Info
- Publication number
- FR2259147A2 FR2259147A2 FR7427338A FR7427338A FR2259147A2 FR 2259147 A2 FR2259147 A2 FR 2259147A2 FR 7427338 A FR7427338 A FR 7427338A FR 7427338 A FR7427338 A FR 7427338A FR 2259147 A2 FR2259147 A2 FR 2259147A2
- Authority
- FR
- France
- Prior art keywords
- wastewater
- separated
- fatty acids
- phase
- fat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B13/00—Recovery of fats, fatty oils or fatty acids from waste materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Fats And Perfumes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Impurities are removed from fat-containing wastewater in order to recover the fats in the form of fatty acids. This purification of the wastewater is economical and the fatty acids can be expediently extracted from the wastewater. In the process, the working steps conventionally used for the purification of wastewater are combined in a novel manner. By addition of aluminium ions or iron(III) ions at a pH beneath 5 and subsequent precipitation in the presence of alkaline earth metal ions and separating off the precipitated material by flotation, a flotation sludge is obtained. This separated-off flotation sludge is adjusted to a pH beneath 2, a lower aqueous phase and an upper concentrated fat sludge phase forming which is separated off and heated at a pH below 2 and this phase in turn separates into an upper phase composed of fatty acids which is separated off and a lower aqueous phase which contains the precipitation chemicals. This can, if required, be recycled in order to treat additional fat-containing wastewater.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO740247A NO740247L (en) | 1974-01-28 | 1974-01-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2259147A2 true FR2259147A2 (en) | 1975-08-22 |
| FR2259147B1 FR2259147B1 (en) | 1978-02-17 |
Family
ID=19881410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7427338A Expired FR2259147B1 (en) | 1974-01-28 | 1974-08-06 |
Country Status (20)
| Country | Link |
|---|---|
| JP (2) | JPS50103851A (en) |
| AR (1) | AR209423A1 (en) |
| AT (1) | AT343776B (en) |
| BE (1) | BE818384R (en) |
| BR (1) | BR7406552D0 (en) |
| CA (1) | CA1041233A (en) |
| CH (1) | CH614915A5 (en) |
| DE (1) | DE2436858C3 (en) |
| DK (1) | DK146071C (en) |
| ES (1) | ES429026A2 (en) |
| FI (1) | FI236674A (en) |
| FR (1) | FR2259147B1 (en) |
| GB (1) | GB1468092A (en) |
| IE (1) | IE42108B1 (en) |
| IT (1) | IT1045750B (en) |
| NL (1) | NL182655C (en) |
| NO (1) | NO740247L (en) |
| PL (1) | PL113547B3 (en) |
| SE (1) | SE414312B (en) |
| ZA (1) | ZA744804B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9108820U1 (en) * | 1991-07-18 | 1992-11-19 | Ex-Rohr Service Gmbh | |
| DE4212456C2 (en) * | 1992-04-14 | 1997-10-23 | Cc & C Bioservice Gmbh Abwasse | Process for recycling waste water containing water |
| FI97291C (en) * | 1993-06-17 | 1996-11-25 | Kemira Chemicals Oy | Method for recovering aluminum from a water treatment slurry |
| JP4891593B2 (en) * | 2005-10-31 | 2012-03-07 | ミヨシ油脂株式会社 | Treatment of tallow-containing wastewater |
| CN107312616A (en) * | 2017-07-31 | 2017-11-03 | 长沙湘资生物科技有限公司 | Utilize Chinese sumac seed high-efficiency cleaning liquefaction method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2328361A (en) * | 1939-08-23 | 1943-08-31 | Ind Patents Corp | Method of conditioning sludge |
| DE1517730C3 (en) * | 1964-06-30 | 1975-03-13 | Erhardt Dr. 6230 Frankfurt Baer | Process for purifying water |
| CH452449A (en) * | 1965-10-22 | 1968-05-31 | Heinrich Dr Phil Riemer | Process for the purification of industrial waste water |
| FR2107581A5 (en) * | 1970-09-16 | 1972-05-05 | Pont Brule | Purifying water contng proteins and opt lip- - ids |
-
1974
- 1974-01-28 NO NO740247A patent/NO740247L/no unknown
- 1974-07-15 DK DK378774A patent/DK146071C/en not_active IP Right Cessation
- 1974-07-26 ZA ZA00744804A patent/ZA744804B/en unknown
- 1974-07-31 CA CA206,081A patent/CA1041233A/en not_active Expired
- 1974-07-31 DE DE2436858A patent/DE2436858C3/en not_active Expired
- 1974-08-01 BE BE147197A patent/BE818384R/en active
- 1974-08-06 GB GB3467074A patent/GB1468092A/en not_active Expired
- 1974-08-06 AR AR25506874A patent/AR209423A1/en active
- 1974-08-06 FR FR7427338A patent/FR2259147B1/fr not_active Expired
- 1974-08-07 IT IT2610774A patent/IT1045750B/en active
- 1974-08-07 ES ES429026A patent/ES429026A2/en not_active Expired
- 1974-08-07 JP JP8992474A patent/JPS50103851A/ja active Pending
- 1974-08-07 AT AT644774A patent/AT343776B/en active
- 1974-08-07 IE IE1660/74A patent/IE42108B1/en unknown
- 1974-08-08 PL PL1974173336A patent/PL113547B3/en unknown
- 1974-08-08 BR BR655274A patent/BR7406552D0/en unknown
- 1974-08-08 SE SE7410168A patent/SE414312B/en not_active IP Right Cessation
- 1974-08-08 NL NL7410668A patent/NL182655C/en not_active IP Right Cessation
- 1974-08-08 FI FI236674A patent/FI236674A/fi unknown
- 1974-08-20 CH CH1137674A patent/CH614915A5/en not_active IP Right Cessation
-
1982
- 1982-05-12 JP JP57078495A patent/JPS5941798B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| SE7410168L (en) | 1975-07-29 |
| JPS57197087A (en) | 1982-12-03 |
| NL182655C (en) | 1988-04-18 |
| JPS50103851A (en) | 1975-08-16 |
| SE414312B (en) | 1980-07-21 |
| NL7410668A (en) | 1975-07-30 |
| AR209423A1 (en) | 1977-04-29 |
| DK146071C (en) | 1983-11-21 |
| IT1045750B (en) | 1980-06-10 |
| ATA644774A (en) | 1977-10-15 |
| JPS5941798B2 (en) | 1984-10-09 |
| CA1041233A (en) | 1978-10-24 |
| DK378774A (en) | 1975-09-29 |
| NO740247L (en) | 1975-08-25 |
| ZA744804B (en) | 1975-08-27 |
| DK146071B (en) | 1983-06-20 |
| FI236674A (en) | 1975-07-29 |
| BE818384R (en) | 1974-12-02 |
| CH614915A5 (en) | 1979-12-28 |
| DE2436858C3 (en) | 1981-11-19 |
| PL113547B3 (en) | 1980-12-31 |
| AT343776B (en) | 1978-06-12 |
| GB1468092A (en) | 1977-03-23 |
| IE42108B1 (en) | 1980-06-04 |
| DE2436858B2 (en) | 1981-01-08 |
| BR7406552D0 (en) | 1975-08-26 |
| IE42108L (en) | 1975-07-28 |
| FR2259147B1 (en) | 1978-02-17 |
| ES429026A2 (en) | 1977-03-16 |
| DE2436858A1 (en) | 1975-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |