Medical waste disposal method and medical waste disposal shelter equipment

Abstract

The invention discloses a medical waste disposal method and medical waste disposal square cabin equipment, and the disposal method comprises the following steps: feeding medical wastes into a high-temperature steam sterilization cabin, and executing a high-temperature steam sterilization process: pre-vacuumizing the high-temperature steam sterilization cabin, filling steam to raise the temperature to a set temperature, starting sterilization and lasting for a set time; after the sterilization is completed, exhausting steam and draining water by vacuumizing, and then filling dry air for drying treatment; after the high-temperature steam sterilization process is finished, waste, waste water and waste gas in the high-temperature steam sterilization cabin are respectively subjected to a waste treatment process, a waste gas treatment process and a waste water treatment process and then are discharged; through the arrangement, the effect of sterilizing medical wastes by using high-temperature steam is achieved, and the sterilized medical wastes, waste water and waste gas are treated and discharged respectively, so that the waste treatment efficiency is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical waste treatment, and particularly relates to a medical waste disposal method and a medical waste disposal cabin device. Background Art

[0002] Medical waste generally refers to waste generated by various medical and health institutions in medical treatment, prevention, health care, teaching, scientific research, and other related activities, which has direct or indirect infectivity, toxicity, and other hazards. According to the "Regulations on the Administration of Medical Waste", there are five categories of medical waste, which are generally divided into infectious waste, pathological waste, sharp waste, pharmaceutical waste, and chemical waste. The existing medical waste treatment methods generally first perform pre-classification treatment according to categories such as utensils, cotton yarn, living food, and experimental organisms, and then disinfect and subject some glassware or steel products to high-temperature treatment and crushing treatment, and other medical waste is buried or incinerated. This treatment process is very cumbersome and requires a lot of manpower. Some incompletely classified waste is likely to cause secondary pollution, and the treated waste cannot be reused.

[0003] In view of this, the present invention is specifically proposed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a medical waste disposal method and a medical waste disposal cabin device to achieve the purpose of efficiently sterilizing medical waste and respectively treating three-state waste in a targeted manner.

[0005] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] The present invention provides a medical waste disposal method, which is characterized by including the following steps:

[0007] Sending the medical waste into a high-temperature steam sterilization chamber and performing a high-temperature steam sterilization process: the high-temperature steam sterilization chamber performs pre-vacuum pumping, fills steam to raise the temperature to a set temperature and raises the pressure to a set pressure, starts sterilization and lasts for a set time. After sterilization is completed, exhaust steam and drain water are carried out by vacuum pumping, and then dry air is filled for drying treatment;

[0008] After the high-temperature steam sterilization process is completed, the waste, waste water, and waste gas in the high-temperature steam sterilization chamber are respectively subjected to a waste treatment process, a waste gas treatment process, and a waste water treatment process and then discharged outside.

[0009] Furthermore,

[0010] The high-temperature steam sterilization process includes:

[0011] (1) Pulse vacuum stage:

[0012] Medical waste enters the high-temperature steam sterilization chamber. After closing the door, the air inside the high-temperature steam sterilization chamber is evacuated until the set vacuum degree is reached;

[0013] High-pressure steam is filled into the high-temperature steam sterilization chamber, and the dryness value of the steam should not be lower than the set dryness value.

[0014] (2) Heating stage:

[0015] Steam is continuously filled into the high-temperature steam sterilization chamber until the temperature inside the high-temperature steam sterilization chamber rises to the set temperature and the pressure rises to the set pressure;

[0016] (3) Sterilization stage:

[0017] Sterilization timing starts. During this period, the high-temperature steam sterilization chamber remains at the set temperature and set pressure to thoroughly sterilize the medical waste;

[0018] Until the sterilization timing reaches the set time, the program transfers to the exhaust stage;

[0019] (4) Exhaust stage:

[0020] The exhaust port of the high-temperature steam sterilization chamber is opened, and the steam inside the high-temperature steam sterilization chamber is discharged under the action of the internal and external pressure difference; after the air pressure inside the high-temperature steam sterilization chamber drops to the set value, the program transfers to the drying stage;

[0021] (5) Drying stage:

[0022] The gas inside the high-temperature steam sterilization chamber is evacuated, and the vacuum degree inside the high-temperature steam sterilization chamber drops to the set vacuum degree and is maintained for the set time, and the drying stage ends;

[0023] (6) Finally, air flows into the high-temperature steam sterilization chamber, and the high-temperature steam sterilization process is completed.

[0024] Furthermore,

[0025] During the evacuation of the high-temperature steam sterilization chamber in the high-temperature steam sterilization process,

[0026] Steam flows through the jet vacuum pump. When the steam flows through the constricted pipe section of the jet vacuum pump, negative pressure is generated at the negative pressure suction port by using the Venturi effect;

[0027] The negative pressure suction port is connected to the high-temperature steam sterilization chamber, so that the negative pressure pumps out the gas inside the high-temperature steam sterilization chamber and realizes the effect of evacuating it.

[0028] Furthermore,

[0029] The waste treatment process includes:

[0030] After the high-temperature steam sterilization chamber door is opened, the medical waste sterilized by high-temperature steam is poured into the crusher for crushing.

[0031] The crushed medical waste is transported to a compression baler. After baling, the waste is transported to the shelter garbage transport vehicle and carried out by the waste transport vehicle to the landfill for landfill.

[0032] Furthermore,

[0033] The waste gas treatment process includes:

[0034] The waste gas generated during the high-temperature steam sterilization process first passes through a spray tower. Using the circulating spray water on the spray tower, the ammonia and hydrogen sulfide in the waste gas are absorbed and settled, and at the same time, the high-temperature waste gas is cooled.

[0035] Then the waste gas passes through a gas-liquid separator for gas-liquid separation.

[0036] Then the waste gas passes through a biological filter. The high-efficiency filter membrane installed in the biological filter thoroughly filters the microorganisms not inactivated in the waste gas.

[0037] Finally, the waste gas flows through a high-efficiency adsorber, and the substances with smaller molecular sizes in the waste gas are adsorbed by the activated carbon in the high-efficiency adsorber.

[0038] Furthermore,

[0039] The waste gas treatment process also includes:

[0040] The waste gas overflowing from the high-temperature steam sterilization chamber and the crusher is absorbed by a waste gas absorption device.

[0041] The absorbed waste gas is adsorbed by a high-efficiency adsorber.

[0042] Furthermore,

[0043] There is circulating spray water flowing from top to bottom in the spray tower.

[0044] A liquid collection tank is provided at the bottom of the spray tower for collecting the spray water.

[0045] The liquid outlet of the liquid collection tank is connected to the liquid inlet at the top of the spray tower through a pipeline equipped with a circulation pump, so that the collected spray water flows back to the top of the spray tower and then sprays downward to form a circulating flow.

[0046] The waste gas enters from the bottom air inlet of the spray tower and flows out from the top air outlet of the spray tower. The waste gas flows upward in the spray tower and contacts the spray water during the flow process, so that the ammonia and hydrogen sulfide in the waste gas are absorbed into the spray water, and the waste gas is cooled.

[0047] Furthermore,

[0048] The wastewater treatment process includes:

[0049] The drainage of the high-temperature steam sterilization chamber, the drainage of the spray tower, the condensate water of the gas-liquid separator, the condensate water of the muffler, and the condensate water of the biological filter are all connected through pipelines and aggregated to the front pipeline of the ultraviolet disinfection lamp;

[0050] When the above water flows out, it is disinfected by the ultraviolet disinfection lamp before being discharged.

[0051] Furthermore, the high-temperature steam sterilization process, the waste treatment process, the wastewater treatment process, and the waste gas treatment process are all processed in the same cabin;

[0052] The air outlet of the high-efficiency adsorber is connected to the atmosphere outside the cabin through an exhaust pipe with a fan, for discharging the treated gas meeting the emission standards to the atmosphere.

[0053] The present invention also provides a medical waste disposal cabin device, which is characterized in that it adopts the medical waste treatment method described in the above technical solution.

[0054] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0055] 1. It isolates the infectious medical waste from contacting users before treatment.

[0056] 2. It greatly reduces the possibility and probability of secondary infection of medical waste.

[0057] 3. It greatly simplifies the manual operation steps, without the need for detailed classification to reduce the probability of being infected.

[0058] 4. It is simple to operate, works automatically, improves safety, and enhances convenience.

[0059] At the same time, the present invention has a simple structure, a concise method, and remarkable effects, and is suitable for popularization and use.

[0060] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings. Description of the Drawings

[0061] The accompanying drawings, as a part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts. In the drawings:

[0062] Figure 1 is a schematic structural diagram of the medical waste treatment cabin device in the embodiment of the present invention;

[0063] Figure 2 It is a flowchart of medical waste treatment in an embodiment of the present invention.

[0064] Description of main components in the figure:

[0065] 1. Mobile cabin; 2 - Water source; 3. High-temperature steam sterilization area; 31. High-temperature steam sterilization chamber; 32. Steam supply device; 321. Steam generator; 322. Soft water processor; 33. Air extraction device; 331. Jet vacuum pump; 4. Waste treatment area; 41. Waste treatment device; 411. Crusher; 42. Wastewater treatment device; 421. Ultraviolet disinfection lamp; 43. Exhaust gas treatment device; 431. Spray tower; 432. High-efficiency adsorber; 433. Biological filter; 434 - Gas-liquid separator; 44 - Exhaust gas absorption device; 441 - Suction hood; 5. Silencer; 6. Fan; 7. Cooler.

[0066] It should be noted that these drawings and textual descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0067] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0068] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0069] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] Such as Figure 1As shown in the figure, in the embodiment of the present invention, a medical waste treatment cabin is introduced, which includes a square cabin body. A one-way openable and closable cabin door is provided on the side of the cabin body for personnel and items to enter and exit the cabin 1. The cabin 1 is divided into two areas, namely a high-temperature steam sterilization area 3 and a waste treatment area 4. A sterilization trolley is provided in the cabin 1 and is movably arranged in the cabin 1 for carrying medical waste. The sterilization trolley can move between the high-temperature steam sterilization area 3 and the waste treatment area 4. The high-temperature steam sterilization area 3 is used for performing high-temperature steam sterilization treatment on the medical waste carried on the entering sterilization trolley. The waste treatment area 4 is used for receiving the waste, wastewater, and waste gas generated by the high-temperature steam sterilization treatment area 3 and performing sewage treatment.

[0071] Through the above settings, the medical waste can move freely between the sterilization treatment area and the waste treatment area by using the trolley, greatly improving the transmission efficiency of waste treatment and effectively enhancing the treatment efficiency of medical waste. At the same time, through the above settings, the effect of sterilizing medical waste with high-temperature steam can be achieved, and the classified discharge treatment of the medical waste after sterilization treatment is carried out, greatly improving the waste treatment efficiency. This equipment avoids the pollution of the sterilization cabin by medical waste, greatly reducing the cleaning difficulty of the sterilization cabin.

[0072] In the embodiment of the present invention, the sterilization trolley is movably installed in the cabin 1 for carrying medical waste. Behind the cabin door of the cabin body of the cabin 1, a transfer platform is provided on the open side of the cabin door of the high-temperature steam sterilization cabin 31. The top of the transfer platform is set as a smooth square platform for placing the sterilization trolley and for the position conversion of the sterilization trolley between the high-temperature steam sterilization cabin 31 and the crusher 411. The horizontal position of the square platform of the transfer platform is slightly higher than the lowest position inside the high-temperature steam sterilization cabin 31, so that when the sterilization trolley is placed on the square platform, the sterilization trolley can be pulled out or pushed into the high-temperature steam sterilization cabin 31.

[0073] In the embodiment of the present invention, the sterilization trolley is made of stainless steel. Fixed-direction pulleys are provided at the four corners of the bottom of the sterilization trolley, and the fixed-direction pulleys face the direction of entry and exit of the high-temperature steam sterilization cabin 31. The width, height, and diagonal length of the sterilization trolley are all smaller than the inner cavity diameter length of the high-temperature steam sterilization cabin 31, and the length of the sterilization trolley is less than half of the length of the high-temperature steam sterilization cabin 31, so that at least two sterilization trolleys can be accommodated simultaneously inside the high-temperature steam sterilization cabin 31, increasing the one-time treatment space and facilitating pushing, pulling, and handling, and reducing the operation difficulty.

[0074] In the embodiment of the present invention, the high-temperature steam sterilization cabin 31 is a hollow and controllably sealable sterilization cabin. The side of the high-temperature steam sterilization cabin 31 facing the cabin door of the cabin body is set as an openable opening, and a corresponding sealed sterilization cabin door is provided at the opening for sealing the high-temperature steam sterilization cabin.

[0075] In an embodiment of the present invention, the high-temperature steam sterilization chamber 31 is controllably connected to a steam control system and a vacuum pumping system. After the medical waste to be processed is placed in the high-temperature steam sterilization chamber 31, the user starts the working procedure. The steam control system and the vacuum pumping system perform a vacuum pumping process on the inside of the high-temperature steam sterilization chamber 31. After the inside of the high-temperature steam sterilization chamber 31 is in a vacuum state, the steam control system raises the temperature and supplies high-temperature steam into the high-temperature steam sterilization chamber 31, thereby achieving the purpose of high-temperature sterilization.

[0076] In an embodiment of the present invention, the high-temperature steam sterilization area 3 includes a high-temperature steam sterilization chamber 31, which has an enclosed space for the sterilization trolley to enter and exit; a steam supply device 32, whose steam outlet is connected to the inside of the high-temperature steam sterilization chamber 31 and is used to supply saturated steam with adjustable temperature and pressure into the high-temperature steam sterilization chamber 31; an air extraction device 33, whose vacuum extraction port is connected to the high-temperature steam sterilization chamber 31 and is used to perform air extraction on the inside of the high-temperature steam sterilization chamber 31 and adjust the vacuum degree inside the high-temperature steam sterilization chamber 31.

[0077] In an embodiment of the present invention, the steam supply device 32 includes

[0078] a steam generator 321, whose water inlet is connected to a water source through a water softening processor 322 and is used to supply the water flow into the steam generation cavity of the steam generator 321 after soft water treatment; a heater is provided in the steam generation cavity, and the heater heats the water in the cavity to generate steam; the steam generation cavity is connected to the steam outlet through a pipeline and is used to output the generated steam to the outside; a pressure regulating valve is provided on the pipeline connected to the steam outlet and is used to regulate the air pressure of the output steam; at the same time, a temperature regulator is also provided on the pipeline connected to the steam outlet and is used to regulate the temperature of the output steam; moreover, a control valve is also provided on the pipeline connected to the steam outlet and is used to control the on-off of the output steam.

[0079] In an embodiment of the present invention, the high-temperature steam sterilization chamber 31 is also provided with an exhaust port and a drain port, and the exhaust port and the drain port are respectively connected to an exhaust gas treatment device 43 and a wastewater treatment device 42, so that the exhaust gas and wastewater in the high-temperature steam sterilization chamber 31 are discharged to the outside after being treated by the exhaust gas and wastewater treatment devices.

[0080] In an embodiment of the present invention, the air extraction device 33 can be any existing structure, such as a suction pump, a negative pressure pump, etc.; in this embodiment, the air extraction device 33 adopted includes a jet vacuum pump 331. The jet vacuum pump 331 is connected to the steam generator 321 through a pipeline, and the steam flow passing through the jet vacuum pump 331 generates negative pressure at the negative pressure suction port of the jet vacuum pump 331; the negative pressure suction port is connected to the high-temperature steam sterilization chamber 31, so that the negative pressure pumps out the gas inside the high-temperature steam sterilization chamber 31 to adjust the vacuum degree inside the high-temperature steam sterilization chamber 31.

[0081] The medical waste disposal method includes the following steps:

[0082] Send the medical waste into the high-temperature steam sterilization chamber 31 and perform the high-temperature steam sterilization process: The high-temperature steam sterilization chamber 31 performs pre-vacuum pumping, fills with steam to raise the temperature to the set temperature and the pressure to the set pressure, starts sterilization and lasts for the set time. After sterilization is completed, exhaust steam and drain water are carried out by vacuum pumping, and then dry air is filled for drying treatment;

[0083] After the high-temperature steam sterilization process ends, the waste, waste water, and waste gas in the high-temperature steam sterilization chamber 31 are respectively subjected to waste treatment process, waste gas treatment process, and waste water treatment process and then discharged externally.

[0084] Specifically, the packaged medical waste is transported into the high-temperature steam sterilization chamber 31 by the sterilization trolley. The high-temperature steam sterilization chamber 31 performs pre-vacuum pumping to extract the air in the high-temperature steam sterilization chamber 31. When reaching the set temperature, the range of the set vacuum degree is between -0.1 MPa and -0.05 MPa. Preferably, the vacuum pumping pressure reaches the set vacuum degree of -0.09 MPa. Then steam is filled to raise the temperature to the set temperature. The range of the set temperature is 120°C - 140°C. Preferably, the set temperature is 135°C, and the pressure is maintained at the set pressure. The range of the set pressure is 0.1 MPa - 0.3 MPa. Preferably, the set pressure is 0.22 MPa. Start timing for sterilization and last for the set time. The range of the set time is 45 min - 60 min. Preferably, the set time is 45 min. After sterilization is completed, exhaust steam and drain water are carried out to make the pressure reach the set pressure. The range of the set pressure is 20 kPa - 50 kPa. Preferably, the set pressure is 30 kPa. After this process is completed, vacuum pumping is carried out again for the drying treatment stage to make the pressure reach the set pressure. The range of the set pressure is between -0.1 MPa and -0.04 MPa. Preferably, the set pressure is -0.05 MPa. After drying is completed, air is introduced to break the vacuum, and the sterilization treatment process is completed.

[0085] After the sterilization treatment ends, the sealed door is opened, the sterilization trolley is pulled out, and the sterilization trolley is transported to the elevator. The elevator pours the medical waste in the sterilization trolley into the crusher 411 to perform crushing treatment on the medical waste, and at the same time realizes the volume reduction function. The processed medical waste is collected and packaged; the waste water generated during the treatment process is disinfected by the ultraviolet disinfection device and then discharged. Among them, the ultraviolet disinfection device can be the ultraviolet disinfection lamp 421, etc.; the waste gas is absorbed and settled by the ammonia and hydrogen sulfide, particulate matter, etc. in the waste gas through the spray tower 431, and at the same time, the high-temperature waste gas is cooled down, and then gas-liquid separation is carried out through the gas-liquid separator; then the possible remaining microorganisms in the waste gas are secondarily filtered through the biological filter 433, and finally the odor and particulate matter are adsorbed by the high-efficiency adsorber 432, and after the treatment is completed, it is discharged through the exhaust pipe; among them, the high-efficiency adsorber 432 can be an activated carbon adsorption tower, etc.

[0086] Among them, the high-temperature steam sterilization process includes:

[0087] (1) Pre-vacuum stage:

[0088] Medical waste enters the high-temperature steam sterilization chamber 31. After closing the door, the air inside the high-temperature steam sterilization chamber 31 is pumped out to reach the set vacuum degree;

[0089] High-pressure steam is filled into the high-temperature steam sterilization chamber 31, and the dryness value of the steam should not be lower than the set dryness value.

[0090] Among them, this embodiment provides two vacuum pumping modes. Mode one is the pulsating vacuum mode. When the pulsating vacuum mode is adopted, the vacuum pumping procedure needs to be repeated three to four times; Mode two is the pre-vacuum mode. When the pre-vacuum mode is adopted, only one vacuum pumping procedure is required.

[0091] Specifically, when medical waste enters the inner cavity of the high-temperature steam sterilization chamber 31 and the door is closed and the airtight door is automatically inflated, it enters the pulsating vacuum stage. Since the sterilization medium is set as saturated steam, it is necessary to exclude the interference of non-condensable gases such as air. First, most of the air is pumped out to reach a certain vacuum degree, and then high-pressure steam is filled. In order to completely discharge more than 99% of the air in the inner cavity, that is, all local sealed areas in the inner cavity, such as medical waste packaging bags, etc. reach the damaged state, the vacuum pumping should be repeated three to four times to ensure that the non-condensable gas does not exceed 3.5%, the overheating does not exceed 5°C, and the dryness value of the steam should not be lower than 0.95. In this way, it is ensured that the high-pressure steam is more likely to penetrate into the material interior, making the material and the steam contact more fully, and finally ensuring the sterilization effect. The gas discharged in the pulsating vacuum stage needs to be filtered and adsorbed for harmless treatment before being discharged. In this way, it is ensured that the discharged gas can meet the corresponding standards both in terms of medical and health and environmental protection.

[0092] (2) Heating stage:

[0093] Steam is continuously filled into the high-temperature steam sterilization chamber until the temperature inside the high-temperature steam sterilization chamber 31 rises to the set temperature;

[0094] Specifically, after the vacuum pumping is repeated three to four times, steam is continuously filled until the temperature rises to 134°C and enters the sterilization stage.

[0095] (3) Sterilization stage:

[0096] Sterilization timing starts. During this period, the temperature inside the high-temperature steam sterilization chamber is maintained at the set temperature to thoroughly sterilize the medical waste;

[0097] Until the sterilization timing reaches the set time, the program transfers to the exhaust stage;

[0098] Specifically, start the sterilization timing. During this period, the steam regulating valve is jointly controlled by temperature and pressure to ensure that the inner chamber maintains a certain temperature range for sterilizing the waste. When the temperature is lower than 135°C, continue to fill with steam. When the temperature is higher than 135°C, stop filling with steam. After the sterilization timing reaches 45 minutes, the program switches to the exhaust stage.

[0099] (4) Exhaust stage:

[0100] The exhaust port of the high-temperature steam sterilization chamber 31 is opened, and the steam inside the high-temperature steam sterilization chamber 31 is discharged under the action of the internal and external pressure difference; after the air pressure inside the high-temperature steam sterilization chamber 31 drops to the set value, the program switches to the drying stage;

[0101] Specifically, the pneumatic butterfly valve at the exhaust port is opened, and the steam is discharged under the action of the internal and external pressure difference; after the pressure drops to the set value, the program switches to the drying stage.

[0102] (5) Drying stage:

[0103] Extract the gas inside the high-temperature steam sterilization chamber 31, and the vacuum degree inside the high-temperature steam sterilization chamber 31 drops to the set vacuum degree and maintains for the set time, and the drying stage ends;

[0104] Specifically, evacuate to enter the drying stage. Through strong evacuation, maintain for 5 minutes at a certain vacuum degree. Then fill with air to complete drying. All the above processes are automatically controlled by the program and do not require manual intervention. After the entire process ends, there will be an audible, visual, and electrical alarm to indicate the end of sterilization. The main control system consists of control components such as a pressure transmitter, a pressure controller, and a temperature transmitter, which are used to transmit signals to the PLC, and then the PLC sends signals to control the actions of the control valves, the switches of the vacuum pump and the pipeline pump, etc., so as to realize the automatic operation of the program.

[0105] (6) Finally, air flows into the high-temperature steam sterilization chamber, and the high-temperature steam sterilization process is completed.

[0106] In the embodiment of the present invention, the medical waste treatment shelter also has a waste treatment area 4; in the waste treatment area 4, there are waste, waste gas, and waste water treatment devices 41, 43, 42 to respectively treat the solid waste, gaseous waste gas, and liquid waste water after being treated in the high-temperature steam sterilization area 3, and discharge the treated waste in different forms respectively, so as to achieve the effect of thoroughly sterilizing and disinfecting medical waste.

[0107] In the embodiment of the present invention, the waste treatment area 4 includes,

[0108] The waste treatment device 41 has a space for the sterilization trolley to dump the medical waste after high-temperature steam sterilization treatment, and is used for crushing the dumped waste;

[0109] An exhaust gas treatment device 43 is connected to the exhaust port of the high-temperature steam sterilization chamber 31 and is used for sterilizing and disinfecting the exhaust gas discharged from the high-temperature steam sterilization chamber 31.

[0110] A wastewater treatment device 42 is connected to the drain port of the high-temperature steam sterilization chamber 31 and is used for sterilizing and disinfecting the wastewater discharged from the high-temperature steam sterilization chamber 31.

[0111] In the embodiment of the present invention, the waste treatment device 41 has a crusher 411 and a transmission structure. The transmission structure extends from the high-temperature steam sterilization chamber 31 to the crusher 411 and is used to drive the sterilization trolley from the high-temperature steam sterilization chamber 31 to the crusher 411. When the medical waste to be treated is sterilized at high temperature in the high-temperature steam sterilization chamber 31, the high-temperature steam sterilization chamber 31 is opened, the sterilization trolley is pulled out, and the sterilization trolley is sent to the transmission structure. The transmission structure lifts the sterilization trolley to the crusher 411; then the waste inside the sterilization trolley is poured into the crusher 411, and the crusher crushes the medical waste after high-temperature sterilization to achieve the volume reduction function of the medical waste.

[0112] The waste treatment process includes:

[0113] After the high-temperature steam sterilization chamber 31 is opened, the medical waste after high-temperature sterilization is poured into the crusher 411 for crushing treatment;

[0114] The medical waste after crushing treatment is transported to a compression baler, and after being baled, the waste is transported to a shelter garbage transport vehicle and transported out by the waste transport vehicle to a landfill for landfill.

[0115] This equipment selects the process sequence of sterilization first and then crushing, which can not only avoid the diffusion of bacteria in medical waste before treatment, but also meet the requirements of changes in the treatment volume of medical waste; the process of sterilization first and then crushing is widely used, the process technology is mature, the treatment process is safe, the treatment effect is guaranteed, and there is no risk of infection; the system has high reliability and can ensure long-term stable operation; it does not require high operating skills, and the operation, maintenance and maintenance are relatively simple; it is recommended by standards and is the mainstream treatment process.

[0116] In the embodiment of the present invention, the exhaust gas treatment device 43 includes,

[0117] A spray tower 431 is connected to the exhaust port of the high-temperature steam sterilization chamber 31. There is a coolant spraying and flowing downward in the spray tower 431. The exhaust gas discharged from the high-temperature steam sterilization chamber 31 flows upward through the spray tower 431 and exchanges with the coolant to adsorb and remove large-particle gases such as hydrogen sulfide and ammonia in the exhaust gas.

[0118] A gas-liquid separator 434, the intake port of which is connected to the top outlet of the spray tower 431, is used for gas-liquid separation of the exhaust gas.

[0119] The biofilter 433 has its inlet connected to the top outlet of the spray tower 431, and uses a biofilter membrane to filter the residual viruses in the waste gas.

[0120] The high-efficiency adsorber 432 has its inlet connected to the outlet of the biofilter 433, and its outlet is connected to the outside atmosphere. It uses an activated carbon filter element to adsorb and remove hydrogen sulfide and ammonia gas in the waste gas and then exhausts it to the atmosphere.

[0121] The spray tower 431 has a tower body for the coolant to spray and flow downward. The waste gas generated during the vacuum exhaust, post-sterilization exhaust, and drying vacuum exhaust in the high-temperature steam sterilization process is discharged into the spray tower 431. Through the circulating spray water washing of the spray tower 431, substances such as ammonia and hydrogen sulfide in the waste gas can be effectively intercepted. At the same time, the waste gas can be cooled, the temperature of the waste gas can be reduced, water vapor can be removed, and the volume of the discharged waste gas can be reduced. At the same time, for a small amount of small-particle gas that cannot be intercepted, activated carbon is used for adsorption treatment. Such molecules have a small volume, and the adsorption effect of activated carbon is obvious. In addition, in order to effectively dispose of the potentially un-inactivated microorganisms in the discharged waste gas, a high-efficiency filter membrane is used to filter the waste gas to thoroughly treat pathogenic microorganisms.

[0122] A liquid collection tank is provided at the bottom of the tower body of the spray tower 431 to collect the coolant flowing downward from the tower body. A circulation pipeline has one end connected to the liquid collection tank and the other end connected to the top of the tower body. A circulation pump is provided on the circulation pipeline to circulate the coolant between the tower body and the liquid collection tank. At the same time, the coolant flowing through the above-mentioned spray tower 431 adopts any form of liquid. In this embodiment, in order to reduce costs, water is preferably directly used as the coolant.

[0123] A drain port is provided at the bottom of the spray tower for the actual drainage of the spray tower, and an overflow port is provided on the side of the spray tower for the overflow drainage of the spray tower.

[0124] A part of the actual drainage of the spray tower 431 is disinfected, and the other part is reused by the spray tower 431 after heat exchange through a cooler.

[0125] The waste treatment area 4 further includes:

[0126] The waste gas absorption device 44 includes two suction hoods 441 respectively arranged above the high-temperature steam sterilization chamber 31 and the crusher 411. The suction ports of the suction hoods 441 are suspended in the shelter 1 and are used to absorb the waste gas overflowing from the high-temperature steam sterilization chamber 31 and the crusher 411.

[0127] The outlets of the two suction hoods 441 are connected to the pipeline between the biofilter 433 and the high-efficiency adsorber 432.

[0128] The waste gas treatment process includes:

[0129] During the high-temperature steam sterilization process, the exhaust gas first passes through the spray tower 431. By using the circulating spray water on the spray tower 431, ammonia and hydrogen sulfide in the exhaust gas are absorbed and settled, and at the same time, the high-temperature exhaust gas is cooled down.

[0130] Then the exhaust gas is subjected to gas-liquid separation through the gas-liquid separator 434.

[0131] Then the exhaust gas passes through the biological filter 433, and the high-efficiency filter membrane installed in the biological filter 433 thoroughly filters the microorganisms not inactivated in the exhaust gas.

[0132] Finally, the exhaust gas flows through the high-efficiency adsorber 432, and substances with smaller molecular volumes in the exhaust gas are adsorbed by the activated carbon in the high-efficiency adsorber 432.

[0133] The exhaust gas treatment process also includes:

[0134] Absorbing the exhaust gas overflowing from the high-temperature steam sterilization chamber 31 and the crusher 411 through the exhaust gas absorption device 44;

[0135] The absorbed exhaust gas is adsorbed by the high-efficiency adsorber 432.

[0136] Furthermore, spray water that sprays downward in a circulating flow is flowing inside the spray tower 431;

[0137] A liquid collection tank is provided at the bottom of the spray tower for collecting the spray water;

[0138] The liquid outlet of the liquid collection tank is connected to the top liquid inlet of the spray tower 431 through a pipeline provided with a circulation pump, so that the collected spray water flows back to the top of the spray tower and then sprays downward to form a circulating flow;

[0139] The exhaust gas enters from the bottom air inlet of the spray tower 431 and flows out from the top air outlet of the spray tower 431. The exhaust gas flows upward in the spray tower 431 and contacts the spray water during the flow process, so that ammonia and hydrogen sulfide in the exhaust gas are absorbed into the spray water, and the exhaust gas is cooled down.

[0140] Specifically, the vacuum pumping, steam discharging, steam discharging after sterilization, and drying vacuum pumping and exhaust during the sterilization process are all discharged to the spray tower 431 through pneumatic butterfly valves and jet vacuum pumps. Through circulating spray water washing, ammonia, hydrogen sulfide and other substances in the exhaust gas can be effectively intercepted, and at the same time, water vapor can be cooled to reduce the volume of the discharged exhaust gas. For a small amount of gas that cannot be intercepted, activated carbon is used for adsorption treatment. Such molecules have a small volume, and the adsorption effect of activated carbon is obvious. In order to effectively dispose of the potentially existing non-inactivated microorganisms in the discharged exhaust gas, a high-efficiency filter membrane is used to filter the exhaust gas to thoroughly treat pathogenic microorganisms.

[0141] This project adopts a configuration combining the spray method, filtration method, and adsorption method as the main treatment process. When discharging waste gas, the spray tower 431 adopts the form of a packed tower. The gas enters from the lower part, and the liquid is sprayed down from the top to fully contact the gas flowing upward in the opposite direction. Then the gas is discharged from the top of the spray tower 431. A liquid collection tank is provided at the lower part of the tower, and the coolant is recycled and discharged regularly after being treated by ultraviolet disinfection to kill pathogenic microorganisms in the discharged water.

[0142] Steam enters the spray tower and combines with soluble substances in the liquid and waste gas, enabling the organic matter in the waste gas to enter the water tank, thereby achieving the purpose of removing the odor in the waste gas. The high-temperature waste gas passes through the biological filter 433 to filter pathogenic microorganisms. The filtration pore size of the filter membrane is 0.2rm, and the filtration efficiency reaches over 99.999%.

[0143] After being filtered, the waste gas is sent into the high-efficiency adsorber 432 by the induced draft fan. The hydrogen sulfide and ammonia gas in the waste gas are further removed through the adsorption and interception of activated carbon, and then discharged up to the standard.

[0144] In this embodiment, the wastewater treatment device 42 includes a wastewater disinfector, which is arranged on the wastewater drain pipe and has an ultraviolet disinfection lamp 421. The ultraviolet rays generated by the ultraviolet disinfection lamp 421 are used to irradiate and disinfect the wastewater flowing through. There is a sewage treatment station, and the outlet of the wastewater drain pipe is connected to the sewage treatment station to discharge the externally discharged wastewater to the sewage treatment station for sewage treatment after ultraviolet sterilization and disinfection.

[0145] In the embodiment of the present invention, in the wastewater treatment device 42, the drainage of the high-temperature steam sterilization chamber 3, the drainage of the spray tower 431, the condensate water of the gas-liquid separator 434, the condensate water of the silencer 5, and the condensate water of the biological filter 433 are all connected through pipelines and aggregated to the front pipeline of the ultraviolet disinfection lamp 421. When discharging externally, it is disinfected by the ultraviolet disinfection lamp 421 and then discharged, completely inactivating the microorganisms in the wastewater. The treated wastewater can be directly aggregated into the wastewater treatment pipeline for sewage discharge; a silencer 5 is connected in series in the pipeline, which can reduce the whistling sound generated during vacuum pumping; the silencer 5 is arranged between the gas-liquid separator 434 and the biological filter 433.

[0146] The drainage of the high-temperature steam sterilization chamber involves the drainage during the treatment process of the high-temperature steam sterilization chamber 31 and the drainage after sterilization; the drainage of the spray tower 431 involves the overflow drainage of the spray tower 431 and the actual drainage of the spray tower.

[0147] In the embodiment of the present invention, the air outlet of the high-efficiency adsorber 432 is communicated with the outside atmosphere through an exhaust pipe provided with a fan 6. The exhaust end of the exhaust pipe penetrates through the shelter 1, and is used to discharge the exhaust gas in the shelter 1 to the outside atmosphere after being treated to meet the emission standards.

[0148] The water source 2 of the present application can provide water for evaporation and water for spraying to the steam generator 321 and the spray tower 431.

[0149] The high-temperature steam sterilization process, waste treatment process, wastewater treatment process and waste gas treatment process of the present application are all processed in the same shelter;

[0150] The air outlet of the high-efficiency adsorber is communicated with the atmosphere outside the shelter through an exhaust pipe with a fan, and is used to discharge the treated gas that meets the emission standards to the atmosphere.

[0151] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications using the technical content prompted above into equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A method for disposing of medical waste, characterized in that: It includes the following steps, Put the medical waste into the high-temperature steam sterilization chamber and perform the high-temperature steam sterilization process: The high-temperature steam sterilization chamber performs pre-vacuum pumping, fills with steam and heats up to the set temperature, starts sterilization and lasts for the set time. After sterilization is completed, exhaust steam and drain water by vacuum pumping, and then fill with dry air for drying treatment; After the high-temperature steam sterilization process ends, the waste, wastewater, and waste gas in the high-temperature steam sterilization chamber are respectively subjected to waste treatment process, waste gas treatment process, and wastewater treatment process before being discharged.

2. The medical waste disposal method according to claim 1, wherein: The high-temperature steam sterilization process includes: (1) Pre-vacuum stage: The medical waste enters the high-temperature steam sterilization chamber. After closing the door, the air in the high-temperature steam sterilization chamber is pumped out to reach the set vacuum degree; Fill the high-temperature steam sterilization chamber with high-pressure steam, and the dry value of the steam should not be lower than the set dry value. (2) Heating stage: Start continuously filling the high-temperature steam sterilization chamber with steam until the temperature in the high-temperature steam sterilization chamber rises to the set temperature and the pressure rises to the set pressure; (3) Sterilization stage: Start sterilization timing. During this period, the high-temperature steam sterilization chamber remains at the set temperature and set pressure to thoroughly sterilize the medical waste; Until the sterilization timing reaches the set time, the program transfers to the exhaust steam stage; (4) Exhaust steam stage: Open the exhaust port of the high-temperature steam sterilization chamber, and the steam in the high-temperature steam sterilization chamber is discharged under the action of the internal and external pressure difference; after the air pressure in the high-temperature steam sterilization chamber drops to the set value, the program transfers to the drying stage; (5) Drying stage: Pump out the gas in the high-temperature steam sterilization chamber, and the vacuum degree in the high-temperature steam sterilization chamber drops to the set vacuum degree and maintains for the set time, and the drying stage ends; (6) Finally, air flows into the high-temperature steam sterilization chamber, and the high-temperature steam sterilization process is completed.

3. The medical waste disposal method according to claim 2, wherein: During the vacuum pumping of the high-temperature steam sterilization chamber in the high-temperature steam sterilization process, The steam flows through the jet vacuum pump. When the steam flows through the constriction pipe section of the jet vacuum pump, the Venturi effect is used to generate negative pressure at the negative pressure suction port; The negative pressure suction port is connected to the high-temperature steam sterilization chamber, so that the negative pressure pumps out the gas in the high-temperature steam sterilization chamber and realizes the effect of vacuum pumping.

4. The medical waste disposal method according to claim 1, wherein: The waste treatment process includes: After opening the door of the high-temperature steam sterilization chamber, pour the medical waste after high-temperature steam sterilization into a crusher for crushing treatment; Transport the crushed medical waste to a compression baler, and after packing, the waste is transported to a shelter garbage transport vehicle and transported out by the waste transport vehicle to a landfill for landfill.

5. The medical waste disposal method according to claim 1, wherein: The waste gas treatment process includes: The waste gas generated during the high-temperature steam sterilization process first passes through a spray tower. Using the circulating spray water on the spray tower, ammonia and hydrogen sulfide in the waste gas are absorbed and settled, and at the same time, the high-temperature waste gas is cooled; Then the waste gas is subjected to gas-liquid separation through a gas-liquid separator; Then, the waste gas is passed through a biological filter, and the highly efficient filter membrane provided in the biological filter thoroughly filters the uninactivated microorganisms in the waste gas; Finally, the waste gas flows through a highly efficient adsorber, and substances with smaller molecular sizes in the waste gas are adsorbed by the activated carbon in the highly efficient adsorber.

6. The medical waste disposal method according to claim 5, wherein: The waste gas treatment process further includes: Absorbing the waste gas overflowing from the high-temperature steam sterilization chamber and the crusher through a waste gas absorption device; The absorbed waste gas is adsorbed by a highly efficient adsorber.

7. The medical waste disposal method according to claim 5, wherein: Spray water that sprays downward from top to bottom circulates in the spray tower; A liquid collection tank is provided at the bottom of the spray tower for collecting the spray water; The liquid outlet of the liquid collection tank is connected to the liquid inlet at the top of the spray tower through a pipeline provided with a circulation pump, so that the collected spray water flows back to the top of the spray tower and then sprays downward to form a circulating flow; The waste gas enters from the air inlet at the bottom of the spray tower and flows out from the air outlet at the top of the spray tower. The waste gas flows upward in the spray tower and contacts the spray water during the flow process, so that ammonia and hydrogen sulfide in the waste gas are absorbed into the spray water, and the waste gas is cooled down.

8. The medical waste disposal method according to claim 1, wherein: The wastewater treatment process includes: The drainage of the high-temperature steam sterilization chamber, the drainage of the spray tower, the condensate water of the gas-liquid separator, the condensate water of the muffler, and the condensate water of the biological filter are all connected through pipelines and aggregated to the front pipeline of the ultraviolet disinfection lamp; When the above-mentioned water flows out, it is disinfected by the ultraviolet disinfection lamp before being discharged.

9. The medical waste disposal method according to any one of claims 1-8, wherein The high-temperature steam sterilization process, the waste treatment process, the wastewater treatment process, and the waste gas treatment process are all processed in the same mobile cabin; The air outlet of the highly efficient adsorber is communicated with the atmosphere outside the mobile cabin through an exhaust pipe provided with a fan, for discharging the treated gas meeting the emission standards to the atmosphere.

10. A medical waste disposal cabin device, characterized in that, Adopt the medical waste treatment method according to any one of claims 1-9.

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