CA2136269A1 - Bio-hazardous waste treatment process and machine - Google Patents
Bio-hazardous waste treatment process and machineInfo
- Publication number
- CA2136269A1 CA2136269A1 CA002136269A CA2136269A CA2136269A1 CA 2136269 A1 CA2136269 A1 CA 2136269A1 CA 002136269 A CA002136269 A CA 002136269A CA 2136269 A CA2136269 A CA 2136269A CA 2136269 A1 CA2136269 A1 CA 2136269A1
- Authority
- CA
- Canada
- Prior art keywords
- waste
- machine
- disinfection chamber
- intermediate container
- disinfection
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000008569 process Effects 0.000 title claims abstract description 11
- 239000010832 regulated medical waste Substances 0.000 title abstract description 3
- 239000002699 waste material Substances 0.000 claims abstract description 63
- 239000002906 medical waste Substances 0.000 claims abstract description 14
- 238000004659 sterilization and disinfection Methods 0.000 claims description 37
- 238000012545 processing Methods 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 3
- 230000005484 gravity Effects 0.000 claims 2
- 238000012546 transfer Methods 0.000 claims 2
- 238000001914 filtration Methods 0.000 claims 1
- 238000002156 mixing Methods 0.000 claims 1
- 239000012780 transparent material Substances 0.000 claims 1
- 230000000249 desinfective effect Effects 0.000 abstract description 5
- 239000002920 hazardous waste Substances 0.000 abstract description 4
- 230000036541 health Effects 0.000 abstract description 3
- 230000003466 anti-cipated effect Effects 0.000 abstract description 2
- 239000010836 blood and blood product Substances 0.000 abstract description 2
- 239000012678 infectious agent Substances 0.000 abstract description 2
- 239000010825 pathological waste Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 238000012432 intermediate storage Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 244000062645 predators Species 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 108700012359 toxins Proteins 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/0056—Other disintegrating devices or methods specially adapted for specific materials not otherwise provided for
- B02C19/0075—Other disintegrating devices or methods specially adapted for specific materials not otherwise provided for specially adapted for disintegrating medical waste
-
- 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
-
- 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—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/04—Heat
-
- 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—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/04—Heat
- A61L2/06—Hot gas
- A61L2/07—Steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
- B09B3/45—Steam treatment, e.g. supercritical water gasification or oxidation
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Food Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
This invention comprises of a machine and a process for treating and disinfecting biomedical hazardous waste.
The subject of waste disposal has become of paramount importance in allthe industrial countries in recent years. Very few members of the general public are aware of the huge quantities of medical waste produced by hospitals, laboratories, clinics and physicians offices. In Ontario for example , more than 10 000 tonnes of regulated medical waste is generated annually by the health care community. This includes blood and blood products, cultures and stocks of infectious agents "sharps" (needles, razors etc.), as well as pathological wastes. Due to the increase in the use of disposable surgical products, it is anticipated that the amount of such waste will grow significantly by the end of the decade.
The subject of waste disposal has become of paramount importance in allthe industrial countries in recent years. Very few members of the general public are aware of the huge quantities of medical waste produced by hospitals, laboratories, clinics and physicians offices. In Ontario for example , more than 10 000 tonnes of regulated medical waste is generated annually by the health care community. This includes blood and blood products, cultures and stocks of infectious agents "sharps" (needles, razors etc.), as well as pathological wastes. Due to the increase in the use of disposable surgical products, it is anticipated that the amount of such waste will grow significantly by the end of the decade.
Description
21~626!~
MACHINERY AND PROCESS FOR TREATING AND DISINFECTING
BIOMEDICAL HAZARDOUS WASTES
This invention comprises of a machine and a process for treating and disinfecting biomedical hazardous waste.
The subject of waste disposal has become of paramount importance in allthe industrial countries in recent years. Very few members of the general public are aware of the huge quantities of medical waste produced by hospitals, laboratories, clinics and physicians offices. In Ontario for example , more than 10 000 tonnes of regulated medical waste is generated annually by the health care community. This includes blood and blood products, cultures and stocks of infectious agents "sharps" (needles, razors etc.), as well as pathological wastes. Due to the increase in the use of disposable surgical products, it is anticipated that the amount of such waste will grow significantly by the end of the decade.
The main problem with biomedical waste is that its contents, if not processed properly are potentially contagious. There are serious health risks in disposing of improperly treated biomedical waste directly into landfill sites and by continuing to do so run the risk of public infection. This may take the form of landfill predators which have been in contact with untreated biomedical waste or by the infiltration of toxins into the groundwater.
Presently, one of the chief methods of biomedical waste disposal is incineration. However, the use of incineration creates its own set of problems including the expense of new incinerators to replace outdated ones, emission of pollutants into the atmosphere, the creation of ash by-products that are toxic and the irreversibility of the incineration process in implementing recycling programs.
Consequently, there is mounting public concern with the present methods for treatment of biomedical waste that necessitates the exploration of alternative treatment solutions.
Patent application no. 2,051,445 based on PCT-90/12602 filed April 16, 1990 describes a continuous process for disinfecting biomedical waste in which the conduction of biomedical is directed via a conveying device, then passed through a series of microwave generators as a possible heat source that heat the waste to a minimum temperature that is required for disinfection of biomedical waste. The apparatus consists of a shredding device, a conveying mechanism, a spray mechanism required to moisten the waste and a microwave heat source. The operation of the aforementioned system is as follows: Hazardous waste is deposited in the 213626~
shredding mechanism to shred the waste, it is then fed through a commuting device where the waste is then moistened and then passed through a microwave field to heat the waste for a specific period of time and then the waste is ejected. Given the amount of waste this machine can process as indicated by the patent application (100-300 kg/h), it is found to be restrictive and not economical with respect to processing time and energy consumed.
The purpose of this invention is to provide a safe, effective and more economical process for disinfection of biomedical waste. This can be achieved by using reliable technology on a larger scale to allow for more waste to be disinfected per processing period. This will allow for the sharing of the processing/disinfecting facilities by a large number of waste generators. In addition, this will increase the affordability of waste treatmentby economies of scale. The reduction in the cost of construction of each machine can be accentuated by the use of various industry specific parts and components already in production to minimize the expense of custom fabrication. The minimization of the working parts and quantity of components in the system would increase the effficiency by requiring less maintenance and repair costs. This can be achieved by use of the machine set forth in this patent application.
The disinfection of biomedical waste by this process would adhere to the following guidelines:
The waste to be treated is fed into the unit through a hopper (1 ), which may be controlled by means of an automated lifting and tipping device or fed through the unit manually. The hopper (2) is fitted with a sealed hydraulic cover and a filter system (3) which removes air/aerosol from the hopper before opening and during waste input, thus preventing contaminants from being vented into the atmosphere.
During loading, the shredder (4) is not in operation. After closing the hopper, the waste is fed down into the shredder by a power arm . Shredding serves a dual purpose: it reduces the waste volume to an unrecognizable mass and facilitates steam penetration into the waste by breaking down larger components of the waste.
The shredded waste is then guided into a temporary internal storage bin (5) (intermediate container) large enough to contain the entire volume of waste to be treated in one cycle (approx. 1 metric tonne of waste per cycle). The function of the intermediate container is to increase the efficiency of the system by reducing the batch loading time. By allowing for one complete cycle of waste to be ready for processing, this eliminates the time required for shredding of waste while the disinfection chamber is idle. This waste is -then fed into the heated disinfection chamber using a feed screw or exit hatch mechanism (6).
While the waste is in the disinfection chamber (7) ,live steam or heated water is then added via a steam generator (9) to obtain a controlled humidity and to allow better heat conduction of the waste particles. In the disinfection chamber, the waste is constantly agitated or mixed to ensure even allocation of heat. The disinfection chamber maybe jacketed and heated by oil with the use of an oil heater (10) and/or steam with a use of a steam generator (9) to ensure a minimum interior chamber temperature. The temperature of the waste reaches over 100 C and is held at that temperature for a predetermined length of time sufficient to render inactive any dangerous microorganisms. The advantage of the disinfection chamber being a batch processor allows for specific attention to be given to different batches of waste. Depending upon the source of waste, some waste need more or less treatment time for disinfection. It is understood that general biomedical waste would require a minimum set exposure time at minimum temperatures. However, highly contaminated and contagious biomedical waste may require exposure to higher levels of temperature and/or time.
While the waste is being treated, another batch of waste is shredded and stored in the intermediate container (5) ready to be processed. After the cycle is completed, the waste is then directed out of the disinfection chamber via a feed screw or an exit hatch (8).
The waste in the intermediate container is then directed to the disinfection chamber whereby the batch process begins again.
The entire process from start to finish maybe automated (ie. computer controlled) by the Central Processing Unit (11) to ensure proper operation and disinfection. The function of the Central Processing Unit would be to constantly monitor the efficiency of the treatment process by first, insuring that prior to the input of waste, the air filter is in operation and is functioning until the hatch of the hopper is closed, second, the shredder is operating while the waste is inputted, third, the power arm is functional, fourth, the monitoring of the volume of waste in the intermediate storage chamber and subsequent notification of when this chamber is at capacity at which time no more waste would be allowed to be shredded, fifth, that it constantly monitors the humidity and temperature via sensors in the disinfection chamber, and/or by monitoring the inflow and outflow temperatures of the thermal heating oils whereby any deficiency in humidity would signal the addition of steam or water into the waste mix, and any deficiency in temperature would signal the automatic increase in the temperature of the oil inflow, sixth that the feed screw (8) would operate only upon the successful completion of the disinfection cycle in the disinfection chamber, seventh, 21~6269 that once the treated waste has been removed from the disinfection chamber, the waste in the intermediate storage chamber would then be conducted into the disinfection chamber via feed screw ~6), and eighth, that the machine shut's down automatically in the event of sensor or system failure. Prior to any maintenance or repair of the equipment, the entire system is flushed with supersaturated steam to disinfect any internal components exposed to the infected waste material. Alternatively, the functions may be monitored manually.
The final outcome is a hygienic waste end-product which can be stored, transported and disposed of as innocuous domestic waste.
MACHINERY AND PROCESS FOR TREATING AND DISINFECTING
BIOMEDICAL HAZARDOUS WASTES
This invention comprises of a machine and a process for treating and disinfecting biomedical hazardous waste.
The subject of waste disposal has become of paramount importance in allthe industrial countries in recent years. Very few members of the general public are aware of the huge quantities of medical waste produced by hospitals, laboratories, clinics and physicians offices. In Ontario for example , more than 10 000 tonnes of regulated medical waste is generated annually by the health care community. This includes blood and blood products, cultures and stocks of infectious agents "sharps" (needles, razors etc.), as well as pathological wastes. Due to the increase in the use of disposable surgical products, it is anticipated that the amount of such waste will grow significantly by the end of the decade.
The main problem with biomedical waste is that its contents, if not processed properly are potentially contagious. There are serious health risks in disposing of improperly treated biomedical waste directly into landfill sites and by continuing to do so run the risk of public infection. This may take the form of landfill predators which have been in contact with untreated biomedical waste or by the infiltration of toxins into the groundwater.
Presently, one of the chief methods of biomedical waste disposal is incineration. However, the use of incineration creates its own set of problems including the expense of new incinerators to replace outdated ones, emission of pollutants into the atmosphere, the creation of ash by-products that are toxic and the irreversibility of the incineration process in implementing recycling programs.
Consequently, there is mounting public concern with the present methods for treatment of biomedical waste that necessitates the exploration of alternative treatment solutions.
Patent application no. 2,051,445 based on PCT-90/12602 filed April 16, 1990 describes a continuous process for disinfecting biomedical waste in which the conduction of biomedical is directed via a conveying device, then passed through a series of microwave generators as a possible heat source that heat the waste to a minimum temperature that is required for disinfection of biomedical waste. The apparatus consists of a shredding device, a conveying mechanism, a spray mechanism required to moisten the waste and a microwave heat source. The operation of the aforementioned system is as follows: Hazardous waste is deposited in the 213626~
shredding mechanism to shred the waste, it is then fed through a commuting device where the waste is then moistened and then passed through a microwave field to heat the waste for a specific period of time and then the waste is ejected. Given the amount of waste this machine can process as indicated by the patent application (100-300 kg/h), it is found to be restrictive and not economical with respect to processing time and energy consumed.
The purpose of this invention is to provide a safe, effective and more economical process for disinfection of biomedical waste. This can be achieved by using reliable technology on a larger scale to allow for more waste to be disinfected per processing period. This will allow for the sharing of the processing/disinfecting facilities by a large number of waste generators. In addition, this will increase the affordability of waste treatmentby economies of scale. The reduction in the cost of construction of each machine can be accentuated by the use of various industry specific parts and components already in production to minimize the expense of custom fabrication. The minimization of the working parts and quantity of components in the system would increase the effficiency by requiring less maintenance and repair costs. This can be achieved by use of the machine set forth in this patent application.
The disinfection of biomedical waste by this process would adhere to the following guidelines:
The waste to be treated is fed into the unit through a hopper (1 ), which may be controlled by means of an automated lifting and tipping device or fed through the unit manually. The hopper (2) is fitted with a sealed hydraulic cover and a filter system (3) which removes air/aerosol from the hopper before opening and during waste input, thus preventing contaminants from being vented into the atmosphere.
During loading, the shredder (4) is not in operation. After closing the hopper, the waste is fed down into the shredder by a power arm . Shredding serves a dual purpose: it reduces the waste volume to an unrecognizable mass and facilitates steam penetration into the waste by breaking down larger components of the waste.
The shredded waste is then guided into a temporary internal storage bin (5) (intermediate container) large enough to contain the entire volume of waste to be treated in one cycle (approx. 1 metric tonne of waste per cycle). The function of the intermediate container is to increase the efficiency of the system by reducing the batch loading time. By allowing for one complete cycle of waste to be ready for processing, this eliminates the time required for shredding of waste while the disinfection chamber is idle. This waste is -then fed into the heated disinfection chamber using a feed screw or exit hatch mechanism (6).
While the waste is in the disinfection chamber (7) ,live steam or heated water is then added via a steam generator (9) to obtain a controlled humidity and to allow better heat conduction of the waste particles. In the disinfection chamber, the waste is constantly agitated or mixed to ensure even allocation of heat. The disinfection chamber maybe jacketed and heated by oil with the use of an oil heater (10) and/or steam with a use of a steam generator (9) to ensure a minimum interior chamber temperature. The temperature of the waste reaches over 100 C and is held at that temperature for a predetermined length of time sufficient to render inactive any dangerous microorganisms. The advantage of the disinfection chamber being a batch processor allows for specific attention to be given to different batches of waste. Depending upon the source of waste, some waste need more or less treatment time for disinfection. It is understood that general biomedical waste would require a minimum set exposure time at minimum temperatures. However, highly contaminated and contagious biomedical waste may require exposure to higher levels of temperature and/or time.
While the waste is being treated, another batch of waste is shredded and stored in the intermediate container (5) ready to be processed. After the cycle is completed, the waste is then directed out of the disinfection chamber via a feed screw or an exit hatch (8).
The waste in the intermediate container is then directed to the disinfection chamber whereby the batch process begins again.
The entire process from start to finish maybe automated (ie. computer controlled) by the Central Processing Unit (11) to ensure proper operation and disinfection. The function of the Central Processing Unit would be to constantly monitor the efficiency of the treatment process by first, insuring that prior to the input of waste, the air filter is in operation and is functioning until the hatch of the hopper is closed, second, the shredder is operating while the waste is inputted, third, the power arm is functional, fourth, the monitoring of the volume of waste in the intermediate storage chamber and subsequent notification of when this chamber is at capacity at which time no more waste would be allowed to be shredded, fifth, that it constantly monitors the humidity and temperature via sensors in the disinfection chamber, and/or by monitoring the inflow and outflow temperatures of the thermal heating oils whereby any deficiency in humidity would signal the addition of steam or water into the waste mix, and any deficiency in temperature would signal the automatic increase in the temperature of the oil inflow, sixth that the feed screw (8) would operate only upon the successful completion of the disinfection cycle in the disinfection chamber, seventh, 21~6269 that once the treated waste has been removed from the disinfection chamber, the waste in the intermediate storage chamber would then be conducted into the disinfection chamber via feed screw ~6), and eighth, that the machine shut's down automatically in the event of sensor or system failure. Prior to any maintenance or repair of the equipment, the entire system is flushed with supersaturated steam to disinfect any internal components exposed to the infected waste material. Alternatively, the functions may be monitored manually.
The final outcome is a hygienic waste end-product which can be stored, transported and disposed of as innocuous domestic waste.
Claims (28)
1) A machine which disinfects biomedical waste and renders it innocuous through a batch moist heat thermal process comprising of a section for loading the waste, and whereby the waste is shredded by a shredding mechanism to an unrecognizable mass, and whereby the shredded waste enters a temporary storage chamber where it is stored until the disinfected waste of the prior cycle in the disinfection chamber is removed. after the disinfected waste in the disinfection chamber is removed. then the waste from the intermediate container is conducted into the disinfection chamber where moisture and heat is applied for a minimum residence time and where the waste is continually mixed and when the waste cycle is complete, there is an outlet to dispose of the waste.
2) The machine as in claim 1 where the waste may be inputted by either a manual or automated device.
3) The machine as in claim 1 where the shredding device may channel the waste by forces of gravity and/or by a mechanical pushing device.
4) The machine as in claim 1 where the intermediate container is an air tight vessel and may or may not be heated and the exterior of the intermediate container walls may or may not comprise of a jacketed layer as a heat transfer medium.
5) The apparatus as in claim 4 where the source of heat may or may not be electrical, thermal oil or supersaturated steam and/or thermally insulated.
6) The apparatus as in claim 4 where the intermediate container may or may not have a sensor to gauge the volume of waste contained and/or may comprise of a transparent material .
7) The machine as in claim 1 wherein the waste conducted from the intermediate container to the disinfection chamber may or may not be achieved by a feed screw or exit hatch
8) The apparatus as in claim 7 wherein the feed screw may or may not be powered by an independent motor.
9) The apparatus as in claim 7 wherein the feed screw may or may not be heated by electricity, thermal oil or supersaturated steam.
10) The apparatus as in claim 7 wherein the waste may be conducted from the intermediate container to the disinfection chamber via the feed screw or exit hatch by the force of gravity or an independent pushing device.
11) The machine as in claim 1 wherein the wherein the intermediate container may or may not be formed in the shape of a funnel.
12) The machine as in claim 1 wherein the disinfection chamber is an air tight vessel and may or may not be in the form of a jacketed layer as the indirect source of a heat transfer medium and/or may or maynot be vented through an independent air filtration system or may or maynot be vented through the input bin filter system.
13) The apparatus as in claim 12 wherein the jacketed layer may or may not be heated by electricity, thermal oil or supersaturated steam .
14) The machine as in claim 1 wherein the disinfection chamber may or may not have a steam and/or water input valve to moisten the waste.
15) The machine as in claim 1 wherein the disinfection chamber may or may not comprise of heat and moisture sensors.
16) The machine in claim 1 wherein the disinfection chamber may or may not be in the form of a commercial ribbon blender.
17) The machine in claim 1 wherein the disinfection chamber may or may not be in the form of any commercial blending device.
18) The machine in claim 1 wherein the disinfection chamber may or may not be cylindrical and/or U-shaped.
19) The apparatus in claim 17 wherein the disinfection chamber may or may not be insulated.
20) The machine in claim 1 wherein the disinfection chamber may or may not dispose of the waste by a feed screw or exit hatch.
21) The apparatus is claim 19 wherein the feed screw or exit hatch may or may not be heated by electricity, thermal oil or supersaturated steam.
22) The apparatus as in claim 19 wherein the feed screw may or may not be powered by an independent motor.
23) The apparatus as in claim 13 wherein there may or may not be heat sensors at the inflow and outflow junctions of the thermal oil conduction tubes and the disinfection chamber.
24) The machine as in claim 1 wherein there may or may not be a steam generating unit which may or may not be connected to each of the following: the hopper, the shredder blades, the intermediate container, the feed screws for the intermediate container and disinfection chambers, and the disinfection chamber to allow for the disinfection of parts for maintenance and repair and/or as a source of steam for maintaining constant humidity in the disinfection chamber.
25) The machine as in claim 1 wherein there may or may not be a central processing unit.
26) The apparatus as in claim 25 wherein the central processing unit may or may not automate all the functions of monitoring and executing of the disinfection of waste.
27) The machine in claim 1 wherein an air filter may or may not be present.
28) The apparatus in claim 27 wherein the air filter may or may not be connected to the hopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002136269A CA2136269A1 (en) | 1994-11-21 | 1994-11-21 | Bio-hazardous waste treatment process and machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002136269A CA2136269A1 (en) | 1994-11-21 | 1994-11-21 | Bio-hazardous waste treatment process and machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2136269A1 true CA2136269A1 (en) | 1996-05-22 |
Family
ID=4154708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002136269A Abandoned CA2136269A1 (en) | 1994-11-21 | 1994-11-21 | Bio-hazardous waste treatment process and machine |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2136269A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109105308A (en) * | 2018-08-22 | 2019-01-01 | 榕江县陆氏鱼莊 | A kind of rice field fish culture field fry sterilizing equipment decontaminating apparatus |
-
1994
- 1994-11-21 CA CA002136269A patent/CA2136269A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109105308A (en) * | 2018-08-22 | 2019-01-01 | 榕江县陆氏鱼莊 | A kind of rice field fish culture field fry sterilizing equipment decontaminating apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |