WO2006111337A1 - Oberflächenbehandlungsanlage - Google Patents
Oberflächenbehandlungsanlage Download PDFInfo
- Publication number
- WO2006111337A1 WO2006111337A1 PCT/EP2006/003496 EP2006003496W WO2006111337A1 WO 2006111337 A1 WO2006111337 A1 WO 2006111337A1 EP 2006003496 W EP2006003496 W EP 2006003496W WO 2006111337 A1 WO2006111337 A1 WO 2006111337A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- surface treatment
- treatment plant
- plant according
- station
- liquid
- 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.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
- A61L2/02—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using physical processes
- A61L2/03—Electric current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
- A61L2/02—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using physical processes
-
- 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
- C02F1/4608—Treatment of water, waste water, or sewage by electrochemical methods using electrical discharges
-
- 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
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/043—Treatment of partial or bypass streams
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Definitions
- the invention relates to a surface treatment plant, in particular for painting, coating, drying and related preparation of metallic or non-metallic objects, with a circuit in which a liquid is circulated.
- Such surface treatment plants are generally known in the art. They serve to provide surfaces of objects in different ways, e.g. by applying paints and other coatings. In general, such plants contain several individual treatment stations for different treatment steps, e.g. Prepare, varnish and dry.
- the objects to be treated which may be metallic but also non-metallic objects, are conveyed for this purpose by means of a conveyor system from treatment station to treatment station.
- liquids are used, for example, for cleaning the stations, for degreasing or rinsing the articles or as a carrier for pigments.
- these liquids are generally not disposed of after their initial use, but circulated in a cycle and thereby fed to a reprocessing device.
- mechanical and chemical-physical cleaning generally takes place before the liquid is reused. In this way, a once provided liquid must not be completely replaced. A replacement generally takes place only in such a way that continuously or at regular intervals smaller amounts of liquid are supplied, the liquid losses, for example due to a discharge of the liquid by the objects or by evaporation, compensate.
- germs Because of the long residence time of the liquids in the circuits, microorganisms may multiply in the liquid.
- the germs multiply particularly rapidly when the liquid is warm, as frequently occurs, for example. cataphoretic dip painting is the case.
- germs are understood as meaning not only bacteria and other unicellulars but also fungi and algae.
- germs can easily pass over when spraying liquids into the air, as is the case for example with the cleaning of spray booths. Furthermore, there is a risk that the germs collect on surfaces and so enforce filters or tubes with small diameters. If the germs settle on the surfaces of the objects to be treated, can also affect the technical result, such as paint damage occur. Since the germs are transferred in the promotion of the objects from station to station, there is also the danger that germs are registered in areas in which an increase in itself is unlikely due to unfavorable chemical or thermal conditions. If, for example, the contents of a paint dip tank are contaminated by germs, this may require a very expensive replacement of the liquid contained therein.
- the liquids used for sterilization are mixed with biocides, by which is meant bactericides and fungicides.
- biocides by which is meant bactericides and fungicides.
- bioconcentrations can be kept relatively low due to the bioactive toxic substances, the costs for this type of disinfection are high.
- the biocides are additives that may also affect the technical result of the treatment and make the biological treatment of effluents more difficult.
- Another problem with the use of chemical-biological agents is the ability of many germs to develop resistant strains that - if at all - only with new and des- can be effectively controlled because of very expensive means.
- this object is achieved in that, for the purpose of sterilizing the liquid, a device for mechanically opening cell membranes in the circuit is integrated.
- the germs are thus not killed chemically-biological, but mechanically claimed so that the cell membranes open irreversibly. As a result, the cytoplasm escapes from the cells, which leads to their death.
- This type of sterilization has the advantage that - apart from the killed biological material - no residues remain in the liquid, as is the case with the treatment with biocides. Furthermore, let such mechanical destruction of the germs comparatively inexpensive and efficient perform. Another advantage of this approach is that the germs can not elude the production of resistant strains of the ultimate mechanical sterilization, as is the case with the chemical-biological sterilization using biocides. Finally works the mechanical opening of cell membranes for the purpose of sterilization even if the liquid is turbid or contains highly absorbing pigments. This is a significant advantage over the irradiation with short-wave electromagnetic radiation, eg UV light, which has also been used for sterilization.
- the device for the mechanical opening of cell membranes may, for example, be an electroporation device.
- electroporation refers to a process in which the cells are briefly exposed to strong electric fields. Finest pores, which are already present in the cell membrane, are widened under the influence of the electric field in such a way that they do not close again even after the electric field has subsided. The only prerequisite for this is that the electric field has a sufficient field strength and exists over a certain minimum duration.
- the inventors have discovered that the difficulties described in the electroporation of biological wastewater do not occur or only to a limited extent in surface treatment plants. This is for example due to the fact that in the surface stations from the outside only relatively small amounts of biological material are registered. Above all, however, the liquids are circulated relatively frequently, so that even comparatively small sterilization rates are sufficient to keep the germ concentration at a very low level.
- cavitation is understood to mean the formation of gas-filled cavities in liquids in underpressure regions, such as occur, for example, when the instantaneous local pressure falls below the vapor pressure of the liquid.
- cavitation is understood to mean the formation of gas-filled cavities in liquids in underpressure regions, such as occur, for example, when the instantaneous local pressure falls below the vapor pressure of the liquid.
- the static pressure of the liquid must be lowered. This can be achieved by accelerating the liquid, as occurs, for example, when the liquid passes through a constriction. Acceleration can also be achieved by contact with fast moving parts, e.g. a rotor of a pump can be achieved.
- the circuit may be a part of a reprocessing device for reprocessing the liquid.
- the reprocessing device can in turn be assigned to one or more processing stations.
- pretreatment stations e.g. a degreasing station or a spray or
- Immersion rinsing station is often worked with warm rinsing fluids in which germs find good conditions for propagation. Also in the pretreatment downstream dipping or spray painting stations reprocessing facilities are generally provided for the regeneration of circulated liquids, both of paints and Lackauswaschwtreurn. In a bath for cataphoretic dip painting, for example, there is also a higher temperature, and microbial contamination of the bath is particularly critical, since replacement of paints causes considerable costs.
- FIG. 1 is a block diagram of a pretreatment area of a paint line
- FIG. 2 shows a dip-degreasing station of the pretreatment area shown in FIG. 1 in a schematic longitudinal section;
- FIG. 3 shows a spray rinsing station of the pretreatment area shown in FIG. 1 in a schematic longitudinal section
- Figure 4 shows a simplified cross section through a
- Electroporation device in which a coronary discharge is generated.
- FIG. 1 shows, in the form of a block diagram, a pretreatment area, generally designated 10, of a painting line, in which body shells for motor vehicles are painted. It is assumed that the preassembled bodies are conveyed from station to station in the order indicated by arrows, with the aid of an unillustrated conveyor system, and are treated there in different ways. Since the sheet metal parts from which the green bodies are manufactured are lubricated before the press-drawing, the green bodies are coated with a thin film of grease when they enter the pre-treatment area 10. To degrease the body shells three stations 12, 14 and 16 are provided, in which a surge degreasing, a spray-degreasing or a dip-degreasing is carried out in a conventional manner.
- the two degreasing stations 12, 14, 16 are followed by two rinsing stations 17, 18.
- a dipping activation or a zinc phosphating takes place.
- a cataphoretic dip painting takes place. There, the body shell is immersed in a paint bath and coated in an electric field.
- the painting station 30 is adjoined by two ultrafiltration rinsing stations 32, 34 and a spray rinse station 36, in which the crude body is again cleaned with demineralized water.
- FIG. 2 shows the dip-degreasing station 16 in a schematic longitudinal section.
- the dipping-degreasing station 16 includes a dip tank 38 filled with heated water 40.
- the water 40 is accompanied by detergents which help to remove the traces of grease from an immersed body shell 42.
- the water 40 is continuously circulated by means of a pump 50, as indicated by arrows.
- the water 40 passes through a heating device 52 which heats the water 40.
- the circuit 44 still other units can be integrated. For this purpose, for example, come filter elements or feeders with which a detergent or water can be added, which replaced by the body shells 42 from the dip tank 38 discharged water.
- the germs can clog small openings in filters or pipes with a small cross-section and thus cause malfunctions. Furthermore, there is a risk that the germs deposit on the body shell 42 and affect the treatment result. After treatment in the dip tank 38, the body shell 42 is lifted out of the water 40. In this case, the body shell 42 comes into contact with the surrounding air. Germs, which are located on the body shell 42, can go in this way in the air and lead to health problems for the operating personnel. Particularly dangerous pathogens, such as Legionella, may even require a shutdown of the entire painting line.
- an electroporation device 54 is integrated into the circuit 44 for the purpose of disinfecting the water 40.
- the electroporation device 54 is located between the pump 50 and the heater 52. Die
- electroporation device 54 may be used elsewhere, e.g. be arranged in the flow direction in front of the pump 50, behind the heater 52 or in a (possibly specially provided for this purpose) bypass line.
- Suitable electroporation devices for this purpose are known per se from the prior art. In this context, reference is made to the article by H. Bluhm et al. and to DE 101 44 486 C1 referenced.
- the parameters which can be selected during electroporation such as pulse amplitude, pulse duration, pulse frequency and pulse shape, influence the efficiency of germ killing and must be adapted to the respective conditions. Because the water 40 is continuously circulated in the circuit 44, it is possible to change one or more of these parameters during the service life of the painting line. As a result, even very different germs can be killed.
- the seeding density of the water 40 supplied by the pump 50 can be reduced by several orders of magnitude.
- the continuous circulation can thus keep the germ density at such a low value that neither adverse effects on the technical result nor health hazards are to be expected.
- a cavitation device may also be provided, in which the water 40, e.g. in the area of a line narrowing or with the help of an impeller o.a. is greatly accelerated.
- gas bubbles are created in the water 40, which in turn generate strong pressure surges when condensing.
- These pressure surges open at least partially the cell membranes of the germs, whereby a similar effect is achieved as in the electroporation device.
- FIG. 3 shows, as representative of these further stations, the spray rinse station 36 in a highly schematic longitudinal section, in which the vehicle bodies are sprayed with desalinated water 140 after the ultrafiltration rinsing in the stations 32, 34.
- the water 140 collects at the bottom of the station 36 and is recycled in a cycle 144.
- the water 144 passes through a pump 150, a filtering and desalination device 156 and an electroporation device 154, before it is sprayed onto the body shells 42 again.
- FIG. 4 shows a cross section through essential parts of an electroporation device with which coronary discharges can additionally be generated.
- a first tube 260 with diameter di coaxially a second tube 262 with diameter d 2 ⁇ di is arranged.
- the two tubes 260, 262 form the electrodes of the electroporation device 254.
- the tubes 260, 262 are connected to a pulse generator 264, with which high-voltage pulses can be generated.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Fertilizers (AREA)
- Pretreatment Of Seeds And Plants (AREA)
- Physical Water Treatments (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06724367A EP1871428B1 (de) | 2005-04-22 | 2006-04-15 | Oberflächenbehandlungsanlage |
| DE502006003098T DE502006003098D1 (de) | 2005-04-22 | 2006-04-15 | Oberflächenbehandlungsanlage |
| US11/918,758 US20090308311A1 (en) | 2005-04-22 | 2006-04-15 | Surface treatment system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005019700.0 | 2005-04-22 | ||
| DE102005019700A DE102005019700A1 (de) | 2005-04-22 | 2005-04-22 | Oberflächenbehandlungsanlage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006111337A1 true WO2006111337A1 (de) | 2006-10-26 |
Family
ID=36480811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2006/003496 Ceased WO2006111337A1 (de) | 2005-04-22 | 2006-04-15 | Oberflächenbehandlungsanlage |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20090308311A1 (de) |
| EP (1) | EP1871428B1 (de) |
| CN (1) | CN101163509A (de) |
| AT (1) | ATE424849T1 (de) |
| DE (2) | DE102005019700A1 (de) |
| WO (1) | WO2006111337A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007025438A1 (de) | 2007-05-31 | 2008-12-04 | Bejotec Gmbh | Verfahren zur Entkeimung einer Tauchbadflüssigkeit |
| JP5873634B2 (ja) * | 2011-01-11 | 2016-03-01 | 富士重工業株式会社 | 電着塗装装置及び電着塗装方法 |
| DE102011014329B3 (de) * | 2011-03-18 | 2012-07-05 | Eisenmann Ag | Verfahren und Anlage zum Entkeimen einer Flüssigkeit |
| DE102011114061A1 (de) | 2011-09-22 | 2012-04-12 | Daimler Ag | Anlage zur Behandlung von Oberflächen, insbesondere zur kathodischen Tauchlackierung |
| WO2015089827A1 (zh) * | 2013-12-20 | 2015-06-25 | 邓志刚 | 气弹簧棒芯外管上漆方法及系统 |
| CN110434009B (zh) * | 2018-05-04 | 2024-05-14 | 宁波方太厨具有限公司 | 一种叶轮的浸涂用设备及工艺 |
| DE102019130510A1 (de) * | 2019-11-12 | 2021-05-12 | Karlsruher Institut für Technologie | Verfahren zur mikrobiellen Desinfektion wasserbasierter Dispersion mit flüssigen und/oder festen Inhaltsstoffen mittels Hochspannungsimpulsen |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5611993A (en) * | 1995-08-25 | 1997-03-18 | Areopag Usa, Inc. | Ultrasonic method of treating a continuous flow of fluid |
| US20020144957A1 (en) * | 1995-11-02 | 2002-10-10 | Jeffry Held | Method of treating waste-activated sludge using electroporation |
| US20040226823A1 (en) * | 2002-08-01 | 2004-11-18 | Apostolos Katefidis | Installation for the cataphoretic dip coating of articles |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5227615B2 (de) * | 1971-12-24 | 1977-07-21 | ||
| IT1017643B (it) * | 1973-11-15 | 1977-08-10 | Ebara Udylite Kk | Metodo e apparecchio per tratta re soluzioni per il trattamento superficiale di metalli e liqui di di lavaggio |
| DE2408754A1 (de) * | 1974-02-23 | 1975-09-04 | Hans Otto Ernst Gazda | Vorrichtung zum entkeimen von fluessigkeiten |
| AU525294B2 (en) * | 1979-07-09 | 1982-10-28 | Mitsubishi Rayon Company Limited | Dip coating |
| DE3230660C1 (de) * | 1982-08-02 | 1984-01-26 | Basf Farben + Fasern Ag, 2000 Hamburg | Verfahren und Vorrichtung zur Durchfuehrung einer Elektrotauchlackierung sowie Anwendung |
| DE3833119A1 (de) * | 1988-09-29 | 1990-04-12 | Sep Tech Studien | Verfahren zur chromatierung und lackierung von metalloberflaechen mit wasserverduennbaren lacken |
| US5430078A (en) * | 1993-08-31 | 1995-07-04 | Basf Corporation | Electrodeposition coating composition comprising cellulose additive |
| US5399390A (en) * | 1994-01-27 | 1995-03-21 | Motorola, Inc. | Liquid crystal display with polymeric substrate |
| US5591317A (en) * | 1994-02-16 | 1997-01-07 | Pitts, Jr.; M. Michael | Electrostatic device for water treatment |
| US5466425A (en) * | 1994-07-08 | 1995-11-14 | Amphion International, Limited | Biological decontamination system |
| JPH08126886A (ja) * | 1994-10-28 | 1996-05-21 | Japan Organo Co Ltd | 超純水の製造方法及び装置 |
| BE1010407A4 (fr) * | 1996-07-04 | 1998-07-07 | Undatim Ultrasonics | Procede et installation de traitement des eaux. |
| DE29700475U1 (de) * | 1997-01-14 | 1998-05-14 | Industrie- und Schiffs-Service R. Gradewald oHG, 22880 Wedel | Gerät zur Reduzierung des Infektionspotentials von strömenden Flüssigstoffen |
| US6120732A (en) * | 1997-06-23 | 2000-09-19 | University Of Georgia Research Foundation, Inc. | Microbial inactivation by high-pressure throttling |
| FR2779449B1 (fr) * | 1998-06-04 | 2000-07-13 | Lorraine Laminage | Procede et installation de revetement d'une surface par electrophorese |
| EP1292372A4 (de) * | 1999-10-12 | 2003-05-14 | M Michael Pitts Jr | Elektrostatische verbesserung für trennvorrichtungen mit membranen |
| US6780306B2 (en) * | 2002-02-12 | 2004-08-24 | Bioelectromagnetics, Inc. | Electroionic water disinfection apparatus |
| US6746613B2 (en) * | 2002-11-04 | 2004-06-08 | Steris Inc. | Pulsed electric field system for treatment of a fluid medium |
| BRPI0512502A (pt) * | 2004-06-23 | 2008-03-11 | Ashland Licensing & Intellectu | aparelho para reduzir a presença de microorganismos vivos em um fluido de eletro-revestimento, e, método para tratar fluido de eletro-revestimento, aparelho |
-
2005
- 2005-04-22 DE DE102005019700A patent/DE102005019700A1/de not_active Withdrawn
-
2006
- 2006-04-15 CN CNA2006800134870A patent/CN101163509A/zh active Pending
- 2006-04-15 DE DE502006003098T patent/DE502006003098D1/de not_active Expired - Lifetime
- 2006-04-15 EP EP06724367A patent/EP1871428B1/de not_active Expired - Lifetime
- 2006-04-15 US US11/918,758 patent/US20090308311A1/en not_active Abandoned
- 2006-04-15 WO PCT/EP2006/003496 patent/WO2006111337A1/de not_active Ceased
- 2006-04-15 AT AT06724367T patent/ATE424849T1/de not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5611993A (en) * | 1995-08-25 | 1997-03-18 | Areopag Usa, Inc. | Ultrasonic method of treating a continuous flow of fluid |
| US20020144957A1 (en) * | 1995-11-02 | 2002-10-10 | Jeffry Held | Method of treating waste-activated sludge using electroporation |
| US20040226823A1 (en) * | 2002-08-01 | 2004-11-18 | Apostolos Katefidis | Installation for the cataphoretic dip coating of articles |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE424849T1 (de) | 2009-03-15 |
| CN101163509A (zh) | 2008-04-16 |
| EP1871428B1 (de) | 2009-03-11 |
| EP1871428A1 (de) | 2008-01-02 |
| DE502006003098D1 (de) | 2009-04-23 |
| DE102005019700A1 (de) | 2006-12-21 |
| US20090308311A1 (en) | 2009-12-17 |
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