DE1442437B2 - Process for separating mineral oils from oil in water emulsions, suspensions and dispersions by adsorption on surface-active substances - Google Patents
Process for separating mineral oils from oil in water emulsions, suspensions and dispersions by adsorption on surface-active substancesInfo
- Publication number
- DE1442437B2 DE1442437B2 DE19651442437 DE1442437A DE1442437B2 DE 1442437 B2 DE1442437 B2 DE 1442437B2 DE 19651442437 DE19651442437 DE 19651442437 DE 1442437 A DE1442437 A DE 1442437A DE 1442437 B2 DE1442437 B2 DE 1442437B2
- Authority
- DE
- Germany
- Prior art keywords
- oil
- suspensions
- adsorption
- active substances
- water emulsions
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/04—Breaking emulsions
- B01D17/047—Breaking emulsions with separation aids
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Colloid Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
- Water Treatment By Sorption (AREA)
Description
Die Erfindung betrifft Verfahren zur Trennung von Mineralölen aus Öl-in-Wasser-Emulsionen, -Suspensionen, -Dispersionen durch Adsorption an oberflächenaktiven Stoffen, insbesondere dispersen Metallsalz-, vorzugsweise Eisen(III)-hydroxidausflokkungen. The invention relates to methods for separating mineral oils from oil-in-water emulsions, -Suspensions, -dispersions due to adsorption on surface-active substances, especially disperse ones Metal salt, preferably iron (III) hydroxide flocculation.
Es ist bekannt, flüssig/flüssig-Trennungen durch Zugabe disperser, in den Mischungsbestandteilen nicht löslicher und oberflächenaktiver Stoffe durchzuführen und zu begünstigen, etwa durch Agglomeration von Öl/Wasser-Emulsionen durch Einführung von Metallpulver u. ä. Weiter hat man die Mischung zu verfeinern gesucht, indem man sie durch Filterschichten aus Sand, Sägemehl, Holzwolle, Diatomeenerde durchleitete bzw. -preßte. Zur Ölabscheidung aus den Betriebsmitteln von Kühlmaschinen benutzte man Kupfer- und Stahlwolleschichten. Eine besonders verstärkte Zusammenballung von öl erreichte man durch Behandlung vonIt is known to perform liquid / liquid separations Addition of dispersed, surface-active substances that are not soluble in the mixture components and to promote them, for example by agglomeration of oil / water emulsions through introduction of metal powder and the like. Attempts have also been made to refine the mixture by passing it through Filter layers made of sand, sawdust, wood wool, diatomaceous earth passed through or pressed. For oil separation Copper and steel wool layers were used from the equipment of cooling machines. A particularly increased agglomeration of oil was achieved by treating
S Öl-in-Wasser-Emulsionen mit Metall-, in Sonderheit Eisen(III)-hydroxiden.S Oil-in-water emulsions with metal hydroxides, especially iron (III) hydroxides.
Praktische Erfahrungen haben inzwischen gezeigt, daß in vielen Emulsionen, wie sie in Form industrieller Abwasser auftreten, der ölgehalt verhältnismäßigPractical experience has now shown that in many emulsions, such as those in the form of industrial Wastewater occur, the oil content is proportionate
ίο niedrig ist, so daß die Notwendigkeit auftritt, vor allem aus synthetischen ölen gebildete Emulsionen zu brechen. Das geschieht durch mehr oder weniger starke Ansäuerung, etwa mit Eisen(III)-chlorid. Bei einer angeschlossenen Neutralisierung mit Natronlauge entsteht das Eisen(III)-hydroxid mit der oben dargestellten Wirkung. Ist nun der ölgehalt der Emulsion klein, so kann nur ein verhältnismäßig kleiner Teil der erzeugten Hydroxide infolge des oleophilen und hydrophoben Charakters der Ver-ίο is low so the need arises before especially to break emulsions formed from synthetic oils. That happens through more or less strong acidification, for example with iron (III) chloride. With a connected neutralization with caustic soda the iron (III) hydroxide is created with the effect shown above. Is now the oil content of the Emulsion is small, so only a relatively small part of the generated hydroxides as a result of the oleophilic and hydrophobic character of the
ao bindung das Öl adsorbieren. Der Rest bleibt im Gemisch und sedimentiert infolge seines höheren spezifischen Gewichtes. Das bedeutet, daß keine klare Phasentrennung eintritt, welche die optimale Entölung erleichtern würde.ao binding adsorb the oil. The rest remains in the mixture and sediments due to its higher specificity Weight. This means that there is no clear phase separation, which would lead to optimal oil removal would facilitate.
as Diese somit noch offene Aufgabe ist jedoch zu lösen, wenn man erfindungsgemäß vorgeht.However, this still open problem can be solved if one proceeds according to the invention.
Die Erfindung besteht, ausgehend von der Trennung von Mineralölen aus Öl-in-Wasser-Emulsionen, -Suspensionen, -Dispersionen durch Adsorption an oberflächenaktiven Stoffen, insbesondere dispersen Metallsalz-, vorzugsweise Eisen(III)-hydroxidausflokkungen, darin, daß das Behandlungsgut vor der Behandlung mit öl angereichert wird.The invention consists, based on the separation of mineral oils from oil-in-water emulsions, -Suspensions, -dispersions due to adsorption on surface-active substances, especially disperse ones Metal salt, preferably iron (III) hydroxide flocculation, in that the material to be treated before the treatment is enriched with oil.
Aus den oben dargelegten Gründen eignet sich das Verfahren besonders zur Entölung von Abwässern, vor allem von Industrieabwässern.For the reasons set out above, the process is particularly suitable for de-oiling wastewater, especially from industrial wastewater.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK0055593 | 1965-03-19 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE1442437A1 DE1442437A1 (en) | 1969-03-06 |
| DE1442437B2 true DE1442437B2 (en) | 1974-11-14 |
| DE1442437C3 DE1442437C3 (en) | 1975-07-24 |
Family
ID=7227518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19651442437 Expired DE1442437C3 (en) | 1965-03-19 | 1965-03-19 | Process for the separation of mineral oils from oil in water emulsions, suspensions, dispersions by adsorption on surface-active substances |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE678101A (en) |
| CH (1) | CH452486A (en) |
| DE (1) | DE1442437C3 (en) |
| GB (1) | GB1111647A (en) |
| LU (1) | LU50694A1 (en) |
| NL (1) | NL156060B (en) |
| SE (1) | SE314962B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2180500A1 (en) * | 1972-04-19 | 1973-11-30 | Etu Realisations Indles | Sepg liquid emulsions - by passing through fine filter to render emulsion unstable |
| WO1984001521A1 (en) * | 1982-10-18 | 1984-04-26 | Georg Ronge | Process for continuous separation of polluting matter from a carrier fluid |
| EP0105964A1 (en) * | 1982-10-18 | 1984-04-25 | Fischer, Jürgen L. | Process for continuous separation of polluting matter from a carrier fluid |
| GB2413337A (en) * | 2004-04-21 | 2005-10-26 | Hydrogen Solar Ltd | Electrodes with tungsten oxide films |
-
1965
- 1965-03-19 DE DE19651442437 patent/DE1442437C3/en not_active Expired
-
1966
- 1966-03-17 CH CH388266A patent/CH452486A/en unknown
- 1966-03-18 GB GB1193566A patent/GB1111647A/en not_active Expired
- 1966-03-18 NL NL6603540A patent/NL156060B/en not_active IP Right Cessation
- 1966-03-18 LU LU50694A patent/LU50694A1/xx unknown
- 1966-03-18 SE SE361266A patent/SE314962B/xx unknown
- 1966-03-28 BE BE678101D patent/BE678101A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6603540A (en) | 1966-09-20 |
| GB1111647A (en) | 1968-05-01 |
| LU50694A1 (en) | 1966-05-18 |
| DE1442437A1 (en) | 1969-03-06 |
| SE314962B (en) | 1969-09-22 |
| DE1442437C3 (en) | 1975-07-24 |
| NL156060B (en) | 1978-03-15 |
| CH452486A (en) | 1968-05-31 |
| BE678101A (en) | 1966-09-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| E77 | Valid patent as to the heymanns-index 1977 | ||
| OI | Miscellaneous see part 1 | ||
| 8339 | Ceased/non-payment of the annual fee |