JP2006336955A - Method for treating medical waste and facility thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for treating medical waste and facility thereof capable of treating the medical waste safely in an energy-efficient manner. <P>SOLUTION: In the method for treating the medical waste and the facility thereof, a process to accept the medical waste and conduct sterilizing treatment, a process to temporarily store and hold the sterilized medical waste before charging it into a gasification melting facility and a process to mix the stored and held medical waste with other waste and charge them to the gasification melting facility are provided at an installation site of the gasification melting facility at the same time. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

 The present invention relates to a medical waste processing method and a processing facility for the medical waste capable of processing medical waste safely and efficiently.

  Since medical waste generated from hospitals contains infectious substances such as bacteria, it is stored in a closed container (generally called a biohazard case) such as a dedicated container and burned by an incinerator. Often done. However, medical waste contains many metal medical instruments that are difficult to melt in normal waste incinerators such as scalpels and injection needles. In the incineration ash, it remained in a needle shape and was dangerous.

  In addition, the ring waste production No. 040316001 (March 16, 2004) “Appropriate treatment of infectious waste” (http://www.env.go.jp/press/file_view.php3?serial=5741&hou_id= 4791) “4.6 In-facility treatment”, the injection needle after sterilization even in sterilization such as high-pressure steam sterilization, boiling, dry heat sterilization, chemical disinfection performed in medical institutions such as hospitals There was a risk of injury during transport because of the sharpness of the metal such as the knife.

In recent years, management of harmful substances such as dioxin in generated gas in incineration has become a problem, and waste incineration equipment capable of decomposing harmful substances in a high-temperature oxidizing atmosphere has been developed. A gasification and melting facility can be given as a typical example of a waste incineration facility that treats waste in such a high-temperature oxidizing atmosphere.
Based on FIG. 2, the gasification melting equipment 1 having the high temperature reactor 5 will be described.

  The waste 2 received from the outside is once deposited in the pit 3 and then sequentially transferred from the pit 3 to the entrance of the tunnel-type heating furnace 4 by the waste transfer equipment 3a such as a crane. 4 is charged. Then, the waste charged in the tunnel-type heating furnace 4 is compressed while preheating to about 600 ° C., dried, pyrolyzed, and carbonized. The carbonized product produced by the carbonization treatment and the gas components generated by the thermal decomposition in the waste containing mineral and metal are charged and blown into the high temperature reactor 5.

  The inside of the high-temperature reactor 5 is maintained at 1000 ° C. or higher, and the combustible component, which is a carbonized product generated by carbonization, is burned by oxygen and gasified. At this time, the gas generated by adjusting the amount of oxygen blown in the high-temperature reactor 5 can be recovered as a fuel gas containing carbon monoxide and hydrogen. In addition, in the waste containing minerals and metals, a residue portion that cannot be carbonized is melted in the high-temperature reactor 5 to be a residue 6 made of slag and metal and recovered from the lower portion of the high-temperature reactor 5. . On the other hand, the recovered gas is rapidly cooled with a large amount of water in the rapid water cooling facility 7 to prevent the formation of dioxins and the like, and the gas purification facility 10 removes acid, sulfur, etc. in the gas, and is used in gas boilers and gas engines. Use as fuel gas. In such a gasification and melting facility 1, fuel gas is used, high pressure steam is generated in the gas boiler of the power generation facility 11, and power is generated by rotating the generator. Alternatively, fuel gas is burned by the gas engine of the power generation facility 11, and the generator is rotated to generate power.

  In the gasification and melting equipment 1 having such a configuration, power generation is usually performed by recovering a combustible gas from a carbonizable substance in a waste containing minerals and metals. At that time, dust, water-soluble components and the like in the gas removed in the rapid water cooling facility 7 are removed in the water treatment facility 12, and the treated water is reused in the gasification and melting facility 1. Further, in the gasification and melting equipment having such a configuration, in the waste containing minerals and metals, the residual portion that cannot be carbonized is melted in the high temperature reactor 5 and recovered from the lower part of the high temperature reactor 5. .

  Therefore, it can be expected to increase the energy efficiency of gasification and melting equipment by using high-calorie carbonized materials such as absorbent cotton, bandages, and paper diapers as raw materials. Metal medical devices such as injection needles and scalpels that cannot be carbonized are melted in the high-temperature reactor 5 and can be recovered as metal, and thus are considered promising as a treatment for medical waste. (Patent Document 1).

In Patent Document 1, using a gasification melting facility, batchwise pressurizing and compressing waste including medical waste, and charging the obtained compression molding into a tunnel-type heating furnace, A waste treatment facility having a process of drying, pyrolysis and carbonization, and a process of charging the obtained carbonized product into a high-temperature reactor and combusting to melt non-combustible components is disclosed. The medical waste treatment technology described in Patent Document 1 employs a method of charging medical waste into the tunnel heating furnace of a gasification and melting facility for each biohazard case.
Japanese Patent Laid-Open No. 11-218313

  However, in the method for treating medical waste described in Patent Document 1, the biohazard case, which is a sealed container containing medical waste, is inserted into a tunnel-type heating furnace, so that the outside of the gas in the furnace In order to avoid scattering, it is necessary to prepare a charging device with a two-stage seal valve and use this charging device to load the containers one by one into the tunnel furnace. In addition, in order to perform reliable sealing, it is necessary to make the sealing valve structure of the charging device firm, so there is a problem that the equipment cost and the maintenance cost become high. Therefore, the current situation is that the conventional gasification melting equipment is not remodeled to the processing process disclosed in Patent Document 1.

  On the other hand, before charging medical waste into gasification and melting equipment, medical institutions such as hospitals dispersed in various places sterilize medical waste, and then sterilize the medical waste. If the waste is transported to the gasification and melting equipment, the special equipment as in Patent Document 1 is not necessary, and the conventional gasification and melting equipment may be applied as it is. However, in order to do so, it is necessary to provide a medical waste sterilization facility called an autoclave for each medical institution such as a hospital distributed in various places. The energy efficiency of heating and sterilization is not required for each medical institution, so the energy efficiency is very poor. FIG. 3 shows a processing flow of the conventional medical waste 20.

  The conventional treatment process of medical waste 20 is performed for each medical institution 40 such as a hospital by performing a sterilization process in the sterilization equipment 15, and after storing the sterilized medical waste 20 in a biohazard case, It is set as the process of collect | recovering together with the general waste 30 by the collection | recovery process 50, and charging with a waste disposal facility after that. In such a conventional treatment process for medical waste 20, since the medical waste 20 was stored in a plastic or metal biohazard case and was loaded into a waste treatment facility, it was collected. The amount of heat generated by the fuel gas may fluctuate greatly. For this reason, in order to process medical waste, the waste processing amount of the whole furnace fell. Moreover, when a high calorie biohazard case was processed, there existed problems, such as refractory being damaged.

Furthermore, in the conventional treatment process of medical waste 20, after the use of sterilization treatment that occurs when sterilization treatment is performed in the sterilization equipment 15 for each medical institution 40 such as a hospital dispersed in various places. Since it is also necessary to treat water, there is a problem that water treatment energy and water treatment equipment for treating water after use of this sterilization treatment are newly required.
The present invention provides a medical waste treatment method and facility that solves the above-described problems and enables safe and energy-efficient treatment of medical waste.

The present invention is as follows.
1. A method of treating medical waste using a waste gasification and melting facility, the step of receiving and sterilizing the medical waste, and installing the sterilized medical waste into the gasification and melting facility. A step of temporarily storing and holding before entering, and a step of mixing the stored medical waste with other waste and charging it into the gasification and melting equipment at the installation location of the gasification and melting equipment. A method for treating medical waste, characterized in that it has at the same time.

2. In the step of charging into the gasification and melting equipment, the medical waste is processed in the gasification and melting equipment by adjusting the charging rate of the medical waste according to the calorific value of the recovered fuel gas. 1 characterized by the above. A method for treating medical waste as described in 1. above.
3. The medical waste is sterilized using a part of the energy generated in the gasification and melting equipment, and the medical waste is processed in the gasification and melting equipment. The above 1. Or 2. A method for treating medical waste as described in 1. above.

4). The medical waste is configured to be sterilized by steam, and the water after use of the sterilization generated by condensation of the steam is treated by the water treatment facility of the gasification melting facility. Characteristic 1. ~ 3. A method for treating medical waste according to any one of the above.
5. The medical waste is treated in the gasification and melting equipment by mutually complementing the step of receiving and sterilizing the medical waste and the step of charging into the gasification and melting equipment. Above 1. ~ 4. A method for treating medical waste according to any one of the above.

6). A metal medical instrument is included in the medical waste, the metal waste of the metal medical instrument is melted and recovered as metal, and the medical waste is processed in the gasification melting facility. 1 above. ~ 5. A method for treating medical waste according to any one of the above.
7). A medical waste processing apparatus using a waste gasification and melting equipment, wherein the gasification and melting equipment includes a sterilization equipment for sterilizing received medical waste, and sterilization by the sterilization equipment. Prior to charging the treated medical waste into the sterilization facility, the pit is temporarily stored and held, and the medical waste stored and held in the pit is mixed with other waste and stored as mixed waste. A pit and a waste transport facility for charging the mixed waste into the gasification and melting facility are arranged close to each other, and the sterilization facility uses a part of the energy generated in the gasification and melting facility. A treatment facility for medical waste, wherein the treatment facility is connected to a power generation facility of the gasification and melting facility so that the medical waste can be sterilized.

  8). The sterilization equipment is connected to a gas boiler that generates steam used in the power generation equipment of the gasification and melting equipment and a steam pipe, and transports water after use of the sterilization processing and the water treatment equipment of the gasification and melting equipment. 6. It is connected with a drain pipe. Medical waste treatment facility as described in 1.

  According to the present invention, it is not necessary to install a sterilization treatment facility for each medical institution such as a hospital dispersed in various places, and the treatment amount according to stabilization of the calories of waste can be used at a full rating. Waste can be used as gas fuel, the heat load on the furnace body is reduced, and the life of refractories can be extended. In addition, since the energy used in the sterilization facility can be supplied from the gasification and melting facility, medical waste can be treated safely and efficiently.

FIG. 1 shows the configuration of a medical waste treatment facility according to an embodiment of the present invention.
FIG. 1 is a schematic diagram showing a configuration of a medical waste treatment facility according to an embodiment of the present invention. In FIG. 1, the same components as those of the conventional gasification and melting equipment 1 already described in FIG. 2 are denoted by the same reference numerals, and the description of the gasification and melting equipment 1 is omitted.
There are various methods for sterilizing the received medical waste 20, but here, a steam sterilization autoclave sterilization facility 15 is installed close to the gasification and melting facility 1. This will be described as an example. Also, in the pit 3, before the sterilized medical waste 20 is charged into the gasification and melting facility 1, the pit that temporarily stores and holds the medical waste 20 that has been stored and held in the other general waste 30. And a pit to be stored and retained as mixed waste 30A.

  That is, as shown in FIG. 1, the structure of the pit 3 is made up of three tanks separated by a partition wall, and the general waste 30 in which the tank closest to the inlet of the tunnel-type heating furnace 4 is conventionally stored is stored. The pit to hold, the tank farthest from the inlet of the tunnel-type heating furnace 4 is the pit that temporarily stores and holds the medical waste 20 sterilized by the sterilization equipment 15, and the tank in the middle is sterilized. This is a pit that is mixed with other general waste 30 and stored as mixed waste 30A before charging the medical waste 20 into the gasification and melting facility 1. Here, in the pit for temporarily storing and holding the sterilized medical waste 20 and the pit for storing and holding the mixed waste 30A, a stirrer is installed to transfer the medical waste 20 to the gasification and melting facility 1. It is preferable to stir before charging since the calorie can be made more uniform. Moreover, the reason why the sterilized medical waste 20 is once stored and held before charging into the gasification and melting equipment 1 is that the calorie of the medical waste 20 stored for each biohazard case is different. Take out the received medical waste 20 from the biohazard case, store and hold the sterilized medical waste 20 in the pit, and insert it into the gasification and melting facility 1 before the medical waste 20 This is to make the calories uniform.

  When the medical waste 20 is processed in the gasification and melting facility 1, the waste transport facility 3a such as a crane lifts a predetermined amount of the mixed waste 30A from which the calories are uniformed from the pit 3 and tunnel type. It conveys to the upper part of the inlet of the heating furnace 4, and is inserted into the inlet of the tunnel heating furnace 4 at that position. In this way, the waste charged in the gasification and melting facility 1 is compressed in the tunnel heating furnace 4 while preheating to 100 to 600 ° C., and dried, pyrolyzed, and carbonized. Among wastes containing minerals and metals, carbonized products produced by carbonization and gas components generated by thermal decomposition thereof are charged and blown into the high-temperature reactor 5 according to the conventional waste treatment process. It is the same.

The medical waste processing facility according to the embodiment of the present invention includes a steam sterilization autoclave sterilization facility 15 that includes a gas boiler and a steam pipe 16 that generate steam used in the power generation facility 11 of the gasification and melting facility 1. In addition to being connected, it is connected to the water treatment facility 12 of the gasification and melting facility 1 by a drain pipe 17 that carries water after sterilization treatment.
That is, the medical waste processing facility according to the embodiment of the present invention is a sterilization processing facility 15 for sterilizing the received medical waste 20 with respect to the conventional gasification melting facility 1 (see FIG. 2). Before the medical waste 20 sterilized by the sterilization processing facility 15 is charged into the gasification melting furnace 1, the pit once stored and held, and the medical waste 20 stored and held in the pit by other general A pit that is mixed with the waste 30 and stored and retained as a mixed waste 30A, and a waste transport facility 3a that charges the mixed waste 30A into the gasification and melting facility are arranged close to each other, and the sterilization processing facility 15 is provided. The medical waste 20 is sterilized by using a part of the energy generated in the gasification melting facility 1. For this reason, when the medical waste 20 is treated, a part of the energy of the power generation equipment 11 that generates power using steam can be used in the sterilization equipment 15, and the sterilization equipment 15 of the steam sterilization autoclave system is used. Since the water treatment equipment 12 of the gasification and melting equipment 1 is connected to the drainage pipe 17, the water after sterilization treatment can be transported through the drainage pipe 17 and processed by the water treatment equipment 12.
In the medical waste processing method using the gasification and melting equipment 1, the medical waste 20 can be processed with respect to the received medical waste 20 as follows.

  In the steam sterilization autoclave-type sterilization equipment 15, after a predetermined amount of medical waste 20 is put into the autoclave, the air in the autoclave is discharged to reduce the pressure, and pressurized steam exceeding 130 ° C is contained therein. Sterilization is performed by feeding. At that time, all of the high-temperature steam used in the sterilization facility 15 is supplied from the high-pressure steam generated in the gas boiler of the power generation facility 11 via the steam pipe 16. After that, the steam in the autoclave is evacuated, and the sterilized waste is dried to some extent using the energy supplied from the gas boiler. Then, the autoclave is opened, and the sterilized medical waste 20 is taken out for one cycle. The sterilization process is completed. At that time, the exhausted steam is condensed again into water by a condenser, and the water after sterilization treatment is transported through the drain pipe 17 to be supplied to the water treatment facility 12, and is supplied to the rapid water cooling facility 7 of the gasification melting facility 1. The sterilized water used in the water treatment facility 12 together with the cooling water to be used is effectively used in the rapid water cooling facility 7 of the gasification and melting facility 1 or the like. Needless to say, high-temperature, high-pressure steam used in the steam sterilization autoclave sterilization equipment 15 is a high-calorie carbonized material such as absorbent cotton, bandages, paper diapers, etc. in medical waste. As a raw material, dioxins are prevented from being generated by quenching a gas containing carbon monoxide and hydrogen generated by adjusting the amount of oxygen blown in the high-temperature reactor 5 with a large amount of water in the rapid water-cooling facility 7. On the other hand, it is a part of the steam generated by burning the fuel gas recovered by removing the acid, sulfur, etc. in the gas with the gas purification facility 10 in the gas boiler of the power generation facility 11.

  As described above, the medical waste processing method using the gasification and melting equipment 1 includes the step of receiving the medical waste 20 and sterilizing, and the sterilized medical waste 20 to the gasification and melting equipment 1. The installation location of the gasification and melting equipment 1 includes the step of temporarily storing and holding before charging, and the step of mixing the stored medical waste 20 with other waste and charging it into the gasification and melting equipment 1. And a sterilization treatment of the medical waste 20 using a part of the energy generated in the gasification melting facility 1.

  Therefore, according to the medical waste processing apparatus and processing method according to the embodiment of the present invention, for each medical institution such as a hospital distributed in various places, sterilization processing equipment and water processing equipment after use of sterilization processing The medical waste can be treated safely and energy-efficiently. In addition, according to the medical waste processing method using the waste gasification and melting facility 1, energy efficiency can be achieved even as a total waste processing system.

  By the way, as the sterilization processing equipment 15, in addition to the steam sterilization autoclave method using high-temperature and high-pressure steam, the heat sterilization method may be a microwave sterilization method using microwaves or a dry heat sterilization method using hot air heating. Needless to say. In that case, as the energy used for the sterilization treatment of the received medical waste 20, the electric energy obtained by the power generation facility 11 of the gasification melting facility 1 is used. For this reason, in the case of a sterilization treatment facility using electrical energy as a heat sterilization method, instead of connecting the sterilization treatment facility and the power generation facility 11 with the steam pipe 16, the power generation facility 11 and the sterilization treatment facility are connected. Connect with the power cable. In the case of a sterilization treatment facility using a microwave or a dry heat sterilization method using hot air heating, the water after sterilization use as shown in FIG. It is not necessary to provide the drain pipe 17 for supplying.

  Here, a steam sterilization autoclave sterilization equipment 15 is installed on the gasification and melting equipment 1 side, and the steam sterilization autoclave sterilization equipment 15 generates steam to be used in the power generation equipment 11 of the gasification and melting equipment 1. It is connected to the gas boiler and the steam pipe 16 to be used, and the medical waste treatment equipment is connected to the water treatment equipment 12 of the gasification and melting equipment 1 and the drainage pipe 17 for transporting the sterilized water after use. Is preferred.

  The reason for this is that a steam sterilization autoclave sterilization facility using high-temperature, high-pressure steam is installed on the machine side of the gasification melting facility 1 and a sterilization sterilization facility using electric energy is gasification melting facility. Compared with the case where it is installed on the machine 1 side, the energy cost of steam used in the power generation equipment 11 is lower than that of electricity generated by the power generation equipment 11, so the sterilization treatment of the medical waste 20 In which water is used for sterilization treatment, which is generated by condensation of steam, and is transported to the water treatment facility 12 of the gasification and melting facility 1 for treatment by the water treatment facility 12 This is because the utility cost is low.

  Further, in the process of charging the gasification and melting facility 1, the charging rate of the medical waste 20 is adjusted according to the heat generation amount of the recovered fuel gas, and the medical waste is discharged by the gasification and melting facility 1. It is preferable to process. The reason for this is that the medical waste 20 is carbonized with a high calorie and low ash content such as absorbent cotton, bandages, paper diapers, etc. The impossible is included. Therefore, by storing and holding the sterilized medical waste 20 once in the pit before charging into the gasification and melting facility 1, the calories that differ for each biohazard case are made uniform. The amount of fixed carbon present as a solid may be small compared to the amount of ash. It is necessary to adjust the total of fixed carbon and ash of general waste 30 other than medical waste 20, so when mixing stored medical waste 20 with other general waste 30, It is preferable to adjust the charging rate of the medical waste 20 according to the heat value of the recovered fuel gas.

In the medical waste treatment method using the gasification and melting equipment 1, the process of receiving the medical waste 20 and sterilizing and the process of charging the gasification and melting equipment 1 are performed in a complementary manner. Therefore, it is preferable to treat the medical waste in the gasification and melting equipment 1 because the calorific value of the recovered fuel gas can be made more uniform.
In addition, the medical waste 20 contains many used injection needles, scalpels, and the like. Therefore, in the method for treating medical waste using the gasification and melting equipment 1, the metal content in the medical waste is melted and recovered as metal, while the medical waste is collected in the gasification and melting equipment 1. It is preferable to treat the residue 6 because the residue 6 collected from the lower part of the high temperature reactor 5 can be easily treated. For this purpose, the temperature in the high-temperature reactor 5 of the gasification and melting equipment 1 is maintained at 1600 ° C. or higher, and metal components such as used needles and scalpels are melted in the high-temperature reactor 5 to obtain a high temperature as metal. It collect | recovers with slag from the reactor 5 lower part. Here, when the temperature in the high-temperature reactor 5 of the gasification melting equipment 1 is less than 1600 ° C., there is a case where the metal content in the medical waste cannot be melted, and the remaining injection needle that is not melted. This is because there is a risk of injury from a scalpel or the like, and it is difficult to process the residue 6 remaining together with the slag.

Here, an embodiment in which a steam sterilization autoclave type sterilization facility 15 is disposed close to the machine side of the gasification and melting facility 1 shown in FIG. explain. The gasification and melting facility 1 can process waste at 9 t / h, and can supply 10 t / h of fuel gas by supplying 6 t / h of oxygen in the high temperature reactor 5. The gas boiler using the fuel gas can generate high-pressure steam of 7 t / h and is used for power generation by the power generation facility 11. Moreover, the water treatment facility of the gasification and melting facility 1 can treat 4 t / h of ring water. In this example, the medical waste 20 is received, and the sterilization equipment 15 uses about 250 kg high-pressure steam per cycle, the sterilization temperature is 135 ° C., and 4 m ³ medical waste (about 1 to 2t) was sterilized in about 1 hour. At that time, the sterilization treatment of the medical waste 20 was performed using a part of the high-pressure steam generated in the gas boiler of the power generation facility 11 before charging the gasification melting facility 1. In addition, the sterilized water condensed from the high-pressure steam of approximately 250 kg / 1 cycle used for sterilization of medical waste 20 is transported to the water treatment facility 12 via the drainage pipe 17, By treating with the cooling water etc. which are circulated and used in the gasification melting equipment 1 in the processing equipment 12, it was reused for the cooling water etc. of the gasification melting equipment.

  Among the sterilized medical waste 20, carbonized materials with high calories and low ash content such as absorbent cotton, bandages, paper diapers, etc. are part of the raw materials that are reacted with oxygen in the high temperature reactor 5 of the gasification melting equipment 1 In addition, low-calorie and high-ash non-carbonized materials such as dangerous needles and scalpels contained in medical waste 20 are 1600 ° C in the high-temperature reactor 5 of the gasification and melting facility 1 It was melted at the above high temperature, and was recovered from the bottom of the high temperature reactor 5 as a residue consisting of slag and metal in total of about 1 t / h. By the treatment of the above medical waste, it was possible to treat the medical waste safely and efficiently.

It is a schematic diagram which shows the structure of the treatment facility of the medical waste concerning embodiment of this invention. It is a schematic diagram of the conventional gasification melting equipment. It is a processing flowchart of the conventional medical waste.

Explanation of symbols

1 Gasification and melting equipment 2 Waste 3 Pit
3a Waste transport equipment 4 Tunnel-type heating furnace 5 High-temperature reactor 6 Residue 7 Rapid water cooling equipment
10 Gas purification equipment
11 Power generation equipment
12 Water treatment facility
15 Sterilization equipment (steam sterilization autoclave)
16 Steam piping
17 Drainage piping
20 Medical waste
30 General waste
30A mixed waste
40 Medical institutions such as hospitals
50 Recovery process

Claims (8)

  A method of treating medical waste using a waste gasification and melting facility, the step of receiving and sterilizing the medical waste, and installing the sterilized medical waste into the gasification and melting facility. A step of temporarily storing and holding before entering, and a step of mixing the stored medical waste with other waste and charging it into the gasification and melting equipment at the installation location of the gasification and melting equipment. A method for treating medical waste, characterized in that it has at the same time.  In the step of charging into the gasification and melting equipment, the medical waste is processed in the gasification and melting equipment by adjusting the charging rate of the medical waste according to the calorific value of the recovered fuel gas. The method for treating medical waste according to claim 1.   The medical waste is sterilized using a part of the energy generated in the gasification and melting equipment, and the medical waste is processed in the gasification and melting equipment. The method for treating medical waste according to claim 1 or 2.   The medical waste is configured to be sterilized by steam, and the water after use of the sterilization generated by condensation of the steam is treated by the water treatment facility of the gasification melting facility. The method for treating medical waste according to any one of claims 1 to 3.  The medical waste is treated in the gasification and melting equipment by mutually complementing the step of receiving and sterilizing the medical waste and the step of charging into the gasification and melting equipment. The processing method of the medical waste in any one of Claims 1-4.   A metal medical instrument is included in the medical waste, the metal waste of the metal medical instrument is melted and recovered as metal, and the medical waste is processed in the gasification melting facility. A method for treating medical waste according to any one of claims 1 to 5.   A medical waste processing apparatus using a waste gasification and melting equipment, wherein the gasification and melting equipment includes a sterilization equipment for sterilizing received medical waste, and sterilization by the sterilization equipment. Prior to charging the treated medical waste into the sterilization facility, the pit is temporarily stored and held, and the medical waste stored and held in the pit is mixed with other waste and stored as mixed waste. A pit and a waste transport facility for charging the mixed waste into the gasification and melting facility are arranged close to each other, and the sterilization facility uses a part of the energy generated in the gasification and melting facility. A treatment facility for medical waste, wherein the treatment facility is connected to a power generation facility of the gasification and melting facility so that the medical waste can be sterilized.   The sterilization equipment is connected to a gas boiler that generates steam used in the power generation equipment of the gasification and melting equipment and a steam pipe, and transports water after use of the sterilization processing and the water treatment equipment of the gasification and melting equipment. The treatment facility for medical waste according to claim 7, wherein the treatment facility is connected by a drain pipe.

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