WO1998001165A1 - Procede et dispositif pour la sterilisation de matieres contaminees - Google Patents

Procede et dispositif pour la sterilisation de matieres contaminees Download PDF

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Publication number
WO1998001165A1
WO1998001165A1 PCT/EP1997/003502 EP9703502W WO9801165A1 WO 1998001165 A1 WO1998001165 A1 WO 1998001165A1 EP 9703502 W EP9703502 W EP 9703502W WO 9801165 A1 WO9801165 A1 WO 9801165A1
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WO
WIPO (PCT)
Prior art keywords
chamber
treatment
lock
treatment chamber
waste
Prior art date
Application number
PCT/EP1997/003502
Other languages
German (de)
English (en)
Inventor
Norbert Stauder
Peter Ott
Arno Endress
Original Assignee
Elastomere Technology Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Elastomere Technology Gmbh filed Critical Elastomere Technology Gmbh
Priority to AU34427/97A priority Critical patent/AU3442797A/en
Publication of WO1998001165A1 publication Critical patent/WO1998001165A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material
    • 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
    • A61L11/00—Methods specially adapted for refuse
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material
    • H05B6/784—Arrangements for continuous movement of material wherein the material is moved using a tubular transport line, e.g. screw transport systems
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/04—Heating using microwaves
    • H05B2206/045—Microwave disinfection, sterilization, destruction of waste...

Definitions

  • the invention relates to a method for sterilizing contaminated material, in particular infectious hospital waste.
  • the invention also relates to a device for sterilizing contaminated material with a treatment chamber.
  • Infectious waste is generated everywhere in the hospital where there are pathogens of communicable diseases that require reporting.
  • the patient with an infectious disease e.g. Typhoid
  • excretes infectious stool which in this case can represent the transmission route. All waste contaminated with stool therefore belongs to this waste category.
  • Hospital laboratories that examine samples from viral hepatitis patients must declare and dispose of the blood or serum residues as infectious waste.
  • Infectious diseases include, for example, brucellosis, cholera, anthrax or scarlet fever.
  • Infectious waste from the hospital sector is therefore, for example, syringes, cannulas, scalpels, infection kits, infusion bottles, wound dressings, diapers, disposable laundry or disposable items such as Disposable gloves.
  • infectious and unsanitary waste from other facilities such as Blood and serum residues, test samples and scientific test material. In order to make disposal of this waste as domestic waste possible, this waste must be sterile.
  • Sterilization means according to "Practice of Sterilization, Disinfection - Preservation" by Karl-Heinz Wallhäuser, Georg-Thieme- Verlag, 1988, p. 213 "the elimination (separation, killing) of all microorganisms and the inactivation of all viruses that are in or on a product or object". Sterilization therefore goes beyond simply disinfecting hospital waste.
  • DE 3800821 C2 discloses a disinfection system for contaminated hospital waste that works with water vapor.
  • the hospital waste to be treated is first fed to a cutting unit, where water vapor is already being sprayed. From there, the shredded hospital waste goes into a heated screw conveyor, which is also subjected to superheated steam, so that the disinfection of the shredded waste is completed there. Afterwards, the waste treated in this way should be able to be disposed of as normal household waste, which is not possible in all cases, however, because not all microorganisms have been killed.
  • This method has the further disadvantage that, due to the high temperatures, Plastic objects are heated above their softening temperature, so that pollutants are released, which must be filtered out of the steam.
  • DE 2842407 C2 discloses a device for the surface treatment of workpieces by discharging ionized gases and a method for operating this device.
  • the ceramic fiber material or the silicate fibers arranged on the chamber wall have the effect of heat insulation of the chamber, so that comparatively high temperatures can be reached due to the gas discharge, which favor the ionization of the gas. This method is therefore only suitable for the treatment of heat-stable materials. An application for the treatment and sterilization of hospital waste has not yet been considered.
  • the object of the invention is to provide a method and a device with which a complete sterilization of contaminated Material is guaranteed in a short time without additional pollutants arising during the treatment.
  • a base voltage U B is applied between the cathode and the anode, which is in the range of preferably 10 to 200 volts.
  • the tension is preferably laid out between the wall of the treatment chamber and the support, for example a table, on which the material to be treated rests. It is advantageously carried out in the area of the falling voltage current characteristic, so that high currents occur at relatively low voltages. As a result of the increased ionization, short treatment times can be achieved.
  • This short-term polarity reversal caused by the high-frequency voltage leads to the ions move omnidirectionally in the room so that a turbulent plasma is created which surrounds the material to be treated like a mist.
  • the high-frequency voltage obviously supports the destruction of the molecular bonds and thus the molecular structures, voltage peaks in the kilovolt range, in particular between 2 kVolt and 3 kVolt, being particularly advantageous.
  • the high-frequency voltage is preferably applied briefly. Pulse lengths in the microsecond range, which are separated by equally long pulse pauses, are advantageous. As a result, there are only slight increases in temperature, which can be limited to a maximum of 40 ° C by selecting the pulse length and the pulse pause.
  • the treatment is preferably carried out at a pressure of 0.1 mbar - 1000 mbar, which depends on the material to be treated. If e.g. "Soft" materials such as diapers, gauze bandages, laundry items or gloves are to be sterilized, a slight negative pressure in the treatment chamber of e.g. 900 - 980 mbar because, due to the high humidity in these wastes, no greater vacuum can be achieved. If, on the other hand, metallic parts such as scalpels or the like, glass, plastic and ceramic parts or implants and medical device parts are to be sterilized, work is preferably carried out at pressures between 0.5 and 3 mbar.
  • the treatment is preferably carried out at room temperature, which, depending on the type of material to be treated, can heat up during the treatment. In this case, however, temperatures of up to a maximum of 60 ° C. are reached, so that the plastic materials usually used in hospitals do not release any pollutants.
  • the material to be treated is comminuted before the treatment. In hospital waste, this results in a compaction of around a factor of four.
  • the device has a plasma chamber as the treatment chamber, which is equipped with the usual additional devices, such as vacuum devices and voltage supply devices.
  • the voltage supply device is preferably designed such that, on the one hand, a predetermined base voltage can be applied to the cathode and anode and, on the other hand, a high-frequency voltage can be superimposed on this base voltage.
  • the walls of the treatment chamber serve as the anode, and a table in the treatment chamber is preferably provided as the cathode, on which the material to be treated is placed.
  • a shredding device is preferably arranged in front of the treatment chamber, from which the shredded material is fed to the treatment chamber, for example via a screw conveyor.
  • the comminution device In order to achieve the highest possible throughput, the comminution device must be operated continuously.
  • the shredded material is therefore first fed to an intermediate chamber which is arranged between the shredding device and the treatment chamber and receives the next batch during the treatment period.
  • the volume of the intermediate chamber is therefore adapted to the receiving volume of the treatment chamber.
  • the intermediate chamber is advantageously arranged above the treatment chamber. To fill the treatment chamber, the material to be treated falls down into the treatment chamber from the intermediate chamber. However, it must be ensured that the walls of the treatment chamber do not become dirty, which would significantly impair the plasma.
  • a lock is preferably arranged between the intermediate chamber and the treatment chamber.
  • the first lock opening leading to the intermediate chamber has a smaller cross section than the second lock opening leading to the treatment chamber, so that the falling material can at most come into contact with the boundary of the first lock opening.
  • the lock openings are preferably closable with a pair of locking flaps, which are pivotally arranged for opening into the lock chamber, so that both the intermediate chamber and the treatment chamber are not affected by the locking means.
  • inflatable seals are advantageously provided, against which the closure means abut in the closed position.
  • the pressure medium can be drained off in the seals, so that, depending on the design, the movement of the closure means is not hindered.
  • Metallic or non-metallic inhibitors can also be arranged in the treatment chamber, which inhibit during the plasma treatment on the materials to be treated and develop an antibacterial effect there.
  • Gold is particularly suitable as a metallic inhibitor.
  • the entire device with comminution device, conveyor device, plasma chamber and supply devices can be installed on a truck, so that the sterilization can be carried out on site, for example at the hospitals.
  • FIG. 1 shows the schematic representation of a device for sterilizing hospital waste
  • Figure 2 is an enlarged view of the lock chamber in
  • Figure 3 is a partial sectional view of the lower lock gate
  • Figure 4 is a diagram of the voltage characteristic.
  • a device 1 for sterilizing hospital waste is shown schematically in FIG.
  • the contaminated material is usually collected in standard roll containers, which are first weighed on an electronic weighing device. When the process is started, the exact mass is recorded for billing and automatically documented.
  • the lifting and tipping device is connected to the closing cover 3 of the receiving funnel 2 by means of lifting rods.
  • the closure cover 3 is simultaneously in the up and down movement of the Lift-tilt device opened or closed.
  • the roller container is rotated by 180 ° at the apex of the lifting and tipping device above the receiving funnel 2, so that complete emptying is ensured. In this position, the roll container is cleaned with a steam boost to disinfect the roll container and also to put any waste that may still be in the hopper.
  • the receiving funnel When the lifting and tipping device is lowered, the receiving funnel is closed and hermetically locked with a hydraulic lock.
  • the closure cover 3 can only be opened after the process has ended and, in the event of a fault, after the emergency program has ended.
  • a comminution device 4 is located below the receiving funnel, the structure of which is known per se. After the closure cover 3 has been locked, saturated steam at a temperature of 140-160 ° C. and a pressure of 3.5-5 bar is injected via the steam nozzles located on the receiving funnel 2 and on the cutting device of the comminution device 4. This ensures that after opening the cover 3, a saturated steam cloud over the already pre-shredded, contaminated waste keeps the germs below and they are therefore not released into the environment.
  • the atmosphere in the receiving funnel is sucked off by means of a suction device in a special filter system and passed over a steam condenser. The extracted atmosphere is sterilized either with UV radiation or with ozone gas. The condensate in the steam generator is thus preheated and sterilized and fed again.
  • the cover 3 is only opened after the fresh saturated steam has been injected.
  • the atmosphere in the receiving funnel 2 is regulated and preferably at 105 ° C. and 150 mbar after the end of the treatment and during an accident by injecting saturated steam into a saturated steam atmosphere controlled by a parameter control of pressure and temperature.
  • the steam flow method is used to disinfect the entire system.
  • the cutting unit of the shredding device 4 starts and the material is pressed onto a feed arm by means of a depressing device, where the shredding of the waste begins.
  • the shredding takes place via a multi-stage cutting unit, whereby the first stage of the cutting unit is used to tear sacks and disposable containers with the help of standing ripping knives and a rotating feed arm.
  • the waste is pressed by the geometry into the rotation of the feed arm against the level knife and further crushed by means of the rotor knife, which is located on the same drive shaft as the feed arm.
  • the waste which has been comminuted in this way is pressed by the post-waste from the first stage by the level knife onto the spiral knife and is finally comminuted against the level knife by the rotation of the spiral knife, which is provided with several cutting edges.
  • the waste comminuted in this way is then brought into the first screw conveyor 6 by a passage reduction which is based on a plate pusher and serves to determine the size of the clippings.
  • the shredded material is transported above the screw conveyor 6 into an intermediate chamber 8, where the material is initially stored until the plasma chamber 25 underneath is ready to receive new material.
  • the volume of the intermediate chamber 8 is adapted to the receiving volume of the plasma chamber 25.
  • the first lock opening 12 facing the intermediate chamber 8 has a smaller cross section than that of the second facing the plasma chamber 25 Sluice opening 14.
  • the first sluice opening 12 facing the intermediate chamber 8 has a smaller cross-section than the second sluice opening 14 facing under the plasma chamber 25 Figure 2 are explained in more detail.
  • the hermetic seal is particularly important in the area of the second lock opening 14 because the treatment chamber 25 is operated at least at a low negative pressure.
  • the closure caps 11a, b in the second lock opening 14 are first opened and the two closure flaps are raised laterally in the lock chamber 10. Only then do the flaps 11a, b of the first lock opening 12 open. This guarantees that no material can adhere to the lock flaps of the second lock and thus no sufficient closure can take place.
  • the material located in the intermediate chamber 8 falls down through the openings, contact with the boundary of the second lock opening 14 being excluded due to the larger cross section. Since both lock openings 12 and 14 are arranged one above the other, the material to be treated falls down through the two openings onto a table 24 arranged in the plasma chamber 25 and forms a heap of material to be treated there.
  • the two lock openings 12 and 14 are then closed .
  • the lower lock opening 14 is arranged in the top wall 20 of the treatment chamber 25.
  • the sterilization treatment in the plasma chamber 25 is based on the discharge of ionized gas, here in particular ionized air.
  • the inside of the plasma chamber 25 is lined with a heat-insulating, fire-resistant, ceramic fiber material based on alumina-silicate fiber.
  • the chamber evacuated to approximately 900 mbar in the case of soft materials and to approximately 1 mbar in the case of metallic or "solid" materials by means of a high-performance vacuum pump.
  • the evacuated air is disinfected via an ion grid and fed to a filter system (not shown).
  • the chamber walls for ionization of the remaining air in the plasma chamber 25, the chamber walls, in particular the side walls 21 as an anode and the table 24 arranged on the bottom wall as a cathode, are connected to a voltage source which is accommodated in the supply and control unit denoted by 34.
  • a constant voltage is applied as the base voltage U B , to which a high-frequency AC voltage is superimposed.
  • Ionization plasma torch 36 emits externally generated ions 38 into the plasma chamber 25, which cause the air to be pre-ionized and thus intensify the gas discharge between the chamber side wall 21 and the materials 26 to be treated.
  • the superimposed high-frequency voltage leads to an area discharge with high discharge energy. In this way, a turbulent plasma is generated, which surrounds the crushed materials 26 to be treated from all sides, almost like an “ion mist”.
  • the ions break the molecular bonds in the microorganisms and thereby destroy them.
  • the decontaminated material is fed down through the third lock opening 23 in the bottom wall 22 to a second screw conveyor 28 and then discharged through a third screw conveyor 30 through the outlet opening 32.
  • This lower lock with the lock opening 23 is shown in FIG. 3 and is explained in more detail in connection with this figure.
  • the visual control releases, ie there is no more waste in the lock area, the lock opening 23 can be closed.
  • the upper lock openings 12, 14 are opened and the waste which has not yet been treated can now fall into the plasma chamber 25 and be treated after the upper lock system has been closed.
  • the lock opening 23 is opened after the treatment has ended, in that the two lock gates 25 are moved laterally by means of a hydraulic or electric drive (not shown) and the waste thus reaches the second screw conveyor 28.
  • the lock opening 23 remains open until the second screw conveyor 28 has discharged all waste. This is controlled by means of a level indicator or by means of a time interrogation in the plasma chamber 25.
  • the lock opening 23 is hermetically closed by moving the two lock gates 29 into one another (see FIG. 3).
  • the disinfected / sterilized "homogeneously" shredded waste is inserted into the third screw conveyor 30 after the second screw conveyor 28.
  • This screw conveyor 30 rises by approximately 70 °, as a result of which the waste pressed in the screw is dehumidified. This moisture collects in the container (not shown) attached under the screw and provided with a sieve. This condensate collected in this way can be fed into the municipal wastewater disposal system using a normal sewage pipe. This condensate no longer contains any infectious germs, since this condensate is removed from the screw conveyor 30 at the end of the sterilization chamber. A connection of the filter system to the head of the screw conveyor 30 enables the volatile condensates to be extracted. At the end of the third screw conveyor 30 there is a knife gate valve with which the entire system can be hermetically sealed in connection with the sealing cover 3.
  • the lock chamber 10 is shown enlarged in section.
  • the upper lock opening 12, which is adjacent to the intermediate chamber 8, has a smaller cross section than the lower lock opening 14, which adjoins the plasma chamber 25.
  • the lock openings 12 and 14 are delimited by boundary walls 12a and 14a.
  • Below the boundary wall 12a two closure flaps 11a and 11b are articulated in the articulation points 15a and 15b. Both flaps 11a and 11b are pivotable about a horizontal axis, so that when the flaps are opened, they are pivoted into the interior of the lock chamber 10, as is indicated by dashed lines.
  • the flaps In the closed position (solid lines of the flaps 11a, 11b), the flaps rest on the underside of the boundary wall 12a, in which seals, in particular inflatable seals 18a and 18b, are arranged. Furthermore, one of the two flaps 11a or 11b has a seal 19a which interacts with the respectively adjacent flap 11a, 11b in the closed position.
  • a corresponding embodiment is located in the area of the lower lock opening 14.
  • the two lower closing flaps 13a and 13b are also mounted about a horizontal axis in the articulation points 16a and 16b above the boundary wall 14a.
  • the two flaps 13a and 13b are set up in the lock chamber 10, as is also shown in broken lines. This ensures that there is no waste in the lock chamber 10 gets stuck, the lower flaps 13a, 13b are first set up and then the upper flaps 11a, 11b are pivoted downward so that they cover the lower flaps at the upper edge region. Under certain circumstances, a slight inclination of the upper flaps 11a, 11b can be advantageous in order to ensure that actually all of the waste falling from the intermediate chamber 8 falls within the cross section of the lower lock opening 14 into the treatment chamber 25.
  • the lower flaps 13a, 13b also bear against seals 18c, 18d in the boundary wall 14a in the closed position. These seals are also preferably inflatable seals.
  • One of the two lower closure flaps 13a, 13b also has a seal 19d on the flap edge, which cooperates with the adjacent closure flap 13a, 13b in the closed position.
  • the use of inflatable seals in the boundary walls 12a, 14a has the advantage that they can be inflated by means of the steam present. This inflation always occurs at the point in time when the two lock openings 12 and 14 are closed, so that the flaps 11a, 11b and 13a and 13b can rest against these seals. Because of the negative pressure prevailing in the plasma chamber 25, a hermetic seal is necessary, in particular in the area of the lower lock opening 14. Here, the flaps 13a, 13b are pressed against the inflatable seals 18c and 18d due to the negative pressure prevailing in the plasma chamber 25.
  • FIG. 3 the lower lock, which closes the lock opening 23, is shown enlarged in partial section.
  • a gate guide element 40 in which the lock gates 29, of which only one lock gate is shown in FIG. 3, are slidably mounted in the horizontal direction.
  • the side guide will guaranteed by balls 42 and springs 44 inside the lock gate 29. From above, balls 41 press over the spring and an inflatable seal 27 onto the lock gate 29.
  • the lock opening 23 is to be opened, the pressure is released from the inflatable seal 27, so that the lock gate 29 can be moved freely.
  • the seal 27 is inflated, the lock gate 29 additionally being pulled against the seal 27 due to the negative pressure prevailing in the plasma chamber.
  • the relationship between the current intensity I and the voltage U in the case of a gas discharge is plotted in the illustration in FIG.
  • the voltage U initially runs approximately constant in a region a of a dark discharge, temporarily rises to a higher value in a region b, the so-called Townsend discharge, and then drops again in a subsequent region c of a normal glow discharge to a value which is only slightly above that of area a. If a certain current strength is exceeded at the end of the range c, the range d for the abnormal glow discharge is reached, in which the voltage U rises sharply with increasing current strength I in order to drop sharply again within a range e after a maximum M has been reached.
  • the ionization process according to the invention runs in the range f between 10 and 200 V (falling current-voltage characteristic).
  • the base voltage U B is laid in this voltage range.
  • the electromagnetic waves generated during gas discharge are in the UV range.
  • the internal lining of the chamber prevents the formation of an arc.
  • the ceramic fibers form a variety of pointed needles, which are the starting and ending points of a current path. As a result, the entire electrical current flowing between the electrodes is divided into an extremely large number of paths.
  • the plasma chamber 25 is designed in such a way that about 1 m 3 of crushed hospital waste can be taken up and a treatment time of not more than 20 min is provided, a total of 3 m 3 of crushed hospital waste can be sterilized in one hour, which is about 12 m 3 of less crushed Waste or approx. 1.2 t of hospital waste.
  • the plasma chamber is designed for an output of approximately 10 kW for such batch quantities. This results from the values on which EN 552 is based, which however deals with the validation and routine monitoring of sterilization with ionizing radiation.
  • the sterilization dose given there for ⁇ -rays can also be transferred to the plasma process.
  • the sterilization dose is the absorbed energy dose per unit mass of material that is required to achieve a certain level of sterilization safety.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Processing Of Solid Wastes (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant d'effectuer rapidement une stérilisation complète de matières contaminées, sans que des subtances polluantes supplémentaires viennent à se former au cours du traitement. Selon ce procédé, les matières, en particulier les déchets infectieux en provenance d'hôpitaux sont exposés, dans une chambre de traitement, à un gaz ionisé. Comme chambre de traitement, on utilise une chambre à plasma (25). Au-dessus de la chambre à plama est disposée une chambre intermédiaire (8) dans laquelle sont entreposés provisoirement les déchets broyés, acheminés en continu, jusqu'à ce qu'ils soient amenés et traités dans la chambre de traitement (25). Le chargement de la chambre à plasma s'effectue par l'intermédiaire d'un sas muni de deux ouvertures (12, 14). A la partie inférieure de la chambre à plasma (25) est disposée une porte (23) par laquelle sont retirées les matières traitées (26).
PCT/EP1997/003502 1996-07-03 1997-07-03 Procede et dispositif pour la sterilisation de matieres contaminees WO1998001165A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU34427/97A AU3442797A (en) 1996-07-03 1997-07-03 Process and device for sterilisation of contaminated material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996126672 DE19626672A1 (de) 1996-07-03 1996-07-03 Verfahren und Vorrichtung zum Sterilisieren von kontaminiertem Material
DE19626672.6 1996-07-03

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Publication Number Publication Date
WO1998001165A1 true WO1998001165A1 (fr) 1998-01-15

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DE (1) DE19626672A1 (fr)
WO (1) WO1998001165A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE19955920A1 (de) * 1999-11-20 2001-06-13 Up Umweltfreundliche Abfallwir Verfahren und Einrichtung zum Desinfizieren/Sterilisieren von kontaminierten Materialien in geschlossenen Behältern
DE102004059808A1 (de) * 2004-12-10 2006-06-14 Krones Ag Dekontamination von Flakes
CN102513331A (zh) * 2011-12-27 2012-06-27 南京工业大学 等离子体生活垃圾处理方法

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DE10158845A1 (de) * 2001-11-27 2003-06-05 Schleicher & Co Int Ag Zerkleinerungsvorrichtung für Kleingeräte und Verfahren zur Entsorgung von kontaminierten Kleingeräten
AUPR955001A0 (en) * 2001-12-11 2002-01-24 Medivac Technology Pty Limited Compact waste treatment apparatus
AUPR955101A0 (en) * 2001-12-11 2002-01-24 Medivac Technology Pty Limited Improved compact waste treatment apparatus

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US3948601A (en) * 1972-12-11 1976-04-06 The Boeing Company Sterilizing process and apparatus utilizing gas plasma
DE2842407A1 (de) * 1978-09-29 1980-04-03 Norbert Stauder Verfahren und vorrichtung zur oberflaechenbehandlung von werkstuecken in einer gasdichten kammer durch entladung ionisierter gase
EP0387022A2 (fr) * 1989-03-08 1990-09-12 Abtox, Inc. Stérilisateur à plasma gazeux et procédé
WO1993012821A1 (fr) * 1991-12-20 1993-07-08 Advanced Plasma Systems, Inc. Conteneur de plasma gazeux et procede
US5364589A (en) * 1991-04-01 1994-11-15 Sterile Systems, Inc. Method and apparatus for sterilizing biological waste

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US5413759A (en) * 1989-03-08 1995-05-09 Abtox, Inc. Plasma sterilizer and method
DE4028101C1 (fr) * 1990-09-05 1991-08-14 Vetco Sanitec Gmbh, 3101 Nienhagen, De

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Publication number Priority date Publication date Assignee Title
US3948601A (en) * 1972-12-11 1976-04-06 The Boeing Company Sterilizing process and apparatus utilizing gas plasma
DE2842407A1 (de) * 1978-09-29 1980-04-03 Norbert Stauder Verfahren und vorrichtung zur oberflaechenbehandlung von werkstuecken in einer gasdichten kammer durch entladung ionisierter gase
EP0387022A2 (fr) * 1989-03-08 1990-09-12 Abtox, Inc. Stérilisateur à plasma gazeux et procédé
US5364589A (en) * 1991-04-01 1994-11-15 Sterile Systems, Inc. Method and apparatus for sterilizing biological waste
WO1993012821A1 (fr) * 1991-12-20 1993-07-08 Advanced Plasma Systems, Inc. Conteneur de plasma gazeux et procede

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19955920A1 (de) * 1999-11-20 2001-06-13 Up Umweltfreundliche Abfallwir Verfahren und Einrichtung zum Desinfizieren/Sterilisieren von kontaminierten Materialien in geschlossenen Behältern
DE19955920C2 (de) * 1999-11-20 2003-06-05 Up Internat Ag Verfahren und Einrichtung zum Desinfizieren/Sterilisieren von kontaminierten Materialien in geschlossenen Behältern
DE102004059808A1 (de) * 2004-12-10 2006-06-14 Krones Ag Dekontamination von Flakes
CN102513331A (zh) * 2011-12-27 2012-06-27 南京工业大学 等离子体生活垃圾处理方法
CN102513331B (zh) * 2011-12-27 2013-03-27 南京工业大学 等离子体生活垃圾处理方法

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DE19626672A1 (de) 1998-01-08

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