WO1992002459A1 - Reinigung von öl- und fettbeladenem abwasser - Google Patents
Reinigung von öl- und fettbeladenem abwasser Download PDFInfo
- Publication number
- WO1992002459A1 WO1992002459A1 PCT/AT1991/000089 AT9100089W WO9202459A1 WO 1992002459 A1 WO1992002459 A1 WO 1992002459A1 AT 9100089 W AT9100089 W AT 9100089W WO 9202459 A1 WO9202459 A1 WO 9202459A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- waste water
- talc
- oil
- grease
- cleaning waste
- Prior art date
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
- B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
Definitions
- the invention relates to the use of talc as an agent for cleaning oil and grease-laden wastewater.
- Flocculation is understood as a comprehensive term for all those processes in which emulsified or suspended substances are separated off, whereas the precipitation relates to the removal of dissolved substances.
- Flocculants are substances which, after dissolving in water, are converted into voluminous precipitates and well destabilize suspensions or emulsions. However, this creates an additional volume of sludge, which must be treated further.
- Flotation is understood to mean the floating of a substance in a liquid, due to the introduction of the smallest possible gas bubbles. After the flotate has accumulated on the surface of the liquid, it can be removed from the system by means of surface clearers.
- Another option for cleaning oily wastewater is to use specially adapted natural microorganisms. Due to the biological metabolism, this is a real disposal in which the pollutants are actually broken down and not just relocated. The However, the rate of degradation is strongly dependent on the temperature and the nutrient supply and can also take several years.
- Adsorption methods are also frequently used for wastewater treatment, the hydrocarbons being bound to activated carbon or to adsorber resins.
- the adsorption on mica materials (DE-OS 1 167 278) or on an organophilic clay (DE-OS 37 19 929) has also already been investigated.
- US Pat. No. 4,332,693 proposes a chemical agent for the treatment of oily emulsions in industrial waste water, which consists of a multicomponent mixture with a predominant proportion of acid-activated bentonite, untreated bentonite, lime and aluminum sulfate as well as small amounts of adipic acid, talc and flocculant.
- the subsequent disposal of the loaded materials is usually carried out by incineration or by regeneration of the adsorbent using a stripper.
- talc with a certain grain size is an excellent means of separating oils and fats from wastewater loaded with them.
- talc according to the invention as an adsorbent can expediently be carried out in all companies which produce large amounts of waste water which is contaminated with high oil and fat loads.
- the contaminated waste water from leather factories, slaughterhouses, refineries, large paint shops and the like are particularly suitable for the waste water treatment according to the invention.
- Practical tests have shown that the use of talc as an adsorbent gives good results for both animal and mineral fats; both types are well bound to the talc.
- the amount of finely divided talc used will primarily depend on the concentration of the contaminant to be removed in the wastewater. This amount of talc can be of the order of magnitude be about 100 mg per 1 liter of waste water.
Landscapes
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3512132A JPH06506390A (ja) | 1990-07-27 | 1991-07-24 | 油及び脂肪含有廃水の浄化 |
SK3493A SK3493A3 (en) | 1990-07-27 | 1991-07-24 | Cleaning waste water contaminated with oil and grease |
NO930260A NO930260D0 (no) | 1990-07-27 | 1993-01-26 | Rensing av avloepsvann som er forurenset med olje og fett |
CZ9387A CZ8793A3 (cs) | 1990-07-27 | 1993-01-27 | Čištění odpadních vod obsahujících oleje a tuky |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA1581/90 | 1990-07-27 | ||
AT158190A AT394030B (de) | 1990-07-27 | 1990-07-27 | Reinigung von oel- und fettbeladenem abwasser |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992002459A1 true WO1992002459A1 (de) | 1992-02-20 |
Family
ID=3516510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT1991/000089 WO1992002459A1 (de) | 1990-07-27 | 1991-07-24 | Reinigung von öl- und fettbeladenem abwasser |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0541586A1 (de) |
JP (1) | JPH06506390A (de) |
AT (1) | AT394030B (de) |
AU (1) | AU8099191A (de) |
CA (1) | CA2088142A1 (de) |
HU (1) | HUT67593A (de) |
PL (1) | PL297649A1 (de) |
SK (1) | SK3493A3 (de) |
WO (1) | WO1992002459A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SI0688303T1 (en) * | 1993-03-11 | 1997-10-31 | Naintsch Mineralwerke | Improved method for purifying waste water using activated sludge to increase purification yields |
AT401383B (de) * | 1993-03-11 | 1996-08-26 | Naintsch Mineralwerke | Verfahren zur verringerung des schlammvolumens in der biologischen abwasserreinigung und mittel hiefür |
AT139U1 (de) * | 1994-06-01 | 1995-03-27 | Naintsch Mineralwerke | Verfahren zur biologischen abwasserreinigung, mittel und vorrichtung hierfuer |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0117586A1 (de) * | 1983-02-23 | 1984-09-05 | Metallgesellschaft Ag | Verfahren zum Koagulieren und Abscheiden der Reste von High-Solids-Lacken |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2744451A1 (de) * | 1977-10-03 | 1979-04-12 | Dieter Knauer | Verschlusseinrichtung fuer fenster, tueren o.dgl. oeffnungen |
US4332693A (en) * | 1978-01-06 | 1982-06-01 | American Colloid Company | Agent for the purification of waste waters and process for its production |
DE3043480A1 (de) * | 1980-11-18 | 1982-07-08 | Justin Hüppe GmbH, 2900 Oldenburg | Rolladen |
-
1990
- 1990-07-27 AT AT158190A patent/AT394030B/de not_active IP Right Cessation
-
1991
- 1991-07-24 PL PL29764991A patent/PL297649A1/xx unknown
- 1991-07-24 EP EP19910912911 patent/EP0541586A1/de not_active Withdrawn
- 1991-07-24 HU HU20693A patent/HUT67593A/hu unknown
- 1991-07-24 AU AU80991/91A patent/AU8099191A/en not_active Abandoned
- 1991-07-24 CA CA 2088142 patent/CA2088142A1/en not_active Abandoned
- 1991-07-24 JP JP3512132A patent/JPH06506390A/ja active Pending
- 1991-07-24 SK SK3493A patent/SK3493A3/sk unknown
- 1991-07-24 WO PCT/AT1991/000089 patent/WO1992002459A1/de not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0117586A1 (de) * | 1983-02-23 | 1984-09-05 | Metallgesellschaft Ag | Verfahren zum Koagulieren und Abscheiden der Reste von High-Solids-Lacken |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 2, no. 36 (M-11)10. März 1978 & JP-A-52 70 307 (TEIJIN LTD. ) 13. Dezember 1977 & DATABASE WPI, accession nr. 78-08864A [05] Derwent Publications Ltd, GB. siehe das ganze Dokument * |
PATENT ABSTRACTS OF JAPAN vol. 4, no. 113 (C-21)13. August 1980 & JP-A-55 70 307 (MATSUSHITA ELECTRIC IND. ) 27. Mai 1980 & DATABASE WPI, accession nr. 80-48760C [28] Derwent Publications Ltd, GB. siehe das ganze Dokument * |
Also Published As
Publication number | Publication date |
---|---|
EP0541586A1 (de) | 1993-05-19 |
SK3493A3 (en) | 1993-10-06 |
JPH06506390A (ja) | 1994-07-21 |
PL297649A1 (de) | 1992-07-13 |
HUT67593A (en) | 1995-04-28 |
ATA158190A (de) | 1991-07-15 |
CA2088142A1 (en) | 1992-01-28 |
AT394030B (de) | 1992-01-27 |
AU8099191A (en) | 1992-03-02 |
HU9300206D0 (en) | 1993-09-28 |
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