CN110466088B

CN110466088B - Cleaning, treating and recycling process of medical non-contraband waste plastics

Info

Publication number: CN110466088B
Application number: CN201910788730.5A
Authority: CN
Inventors: 花世军; 刘忠军
Original assignee: NANTONG PRATT MACHINERY CO Ltd
Current assignee: NANTONG PRATT MACHINERY CO Ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2021-04-13
Anticipated expiration: 2039-08-26
Also published as: CN110466088A

Abstract

The invention discloses a cleaning treatment and recovery process of medical non-contraband waste plastics, which can realize comprehensive treatment of recyclable medical non-contraband waste plastics, introduces a novel disinfection process and is divided into a first stage of crushing disinfection and a second stage of cleaning disinfection, wherein the crushing disinfection realizes rapid solid-liquid separation through an unstable separation device, is convenient to recycle disinfectant, and simultaneously obviously reduces the subsequent cleaning pressure, adopts a mode of co-working of micron-sized bubbles and a silver ion hydrogen peroxide disinfectant in the cleaning disinfection process to mutually promote the sterilization and disinfection effects of the medical non-contraband waste plastics, simultaneously, the existence of the micron-sized bubbles can be mutually matched with ultrasonic waves, further improves the sterilization effect of the micron-sized bubbles and the cleaning effect of the ultrasonic waves, thereby realizing the harmless treatment of the medical non-contraband waste plastics, obtaining the recyclable plastic resource.

Description

Cleaning, treating and recycling process of medical non-contraband waste plastics

Technical Field

The invention relates to the technical field of medical waste treatment, in particular to a cleaning treatment and recovery process of medical non-forbidden waste plastics.

Background

Medical waste refers to waste products generated by medical and health institutions in medical, preventive, health care and other related activities, and having direct or indirect infectivity, toxicity and other harmfulness. Medical wastes are classified into five categories (infectious, pathological, traumatic, medicinal and chemical) and listed in the national records of dangerous wastes. The medical waste may contain a large amount of pathogenic microorganisms and harmful chemical substances, even radioactive and damaging substances, and therefore, the method has important significance for the treatment of the medical waste.

The currently used biomedical waste treatment methods are mainly divided into three categories: incineration, heat sterilization, and chemical sterilization. The incineration method is to directly incinerate the biomedical wastes at high temperature, and the method is relatively thorough in disinfection, but can generate toxic gases such as dioxin and the like, seriously pollutes air and environment and is relatively high in energy consumption; the common heat sterilization technology is generally steam sterilization, namely, the waste is heated to 121-140 ℃ by introducing steam under high pressure; steam sterilization is a simple and effective method for treating biological waste, but consumes a large amount of energy, and may not be effective in sterilizing a closed space in the waste, and has significant limitations in re-pulverizing the waste after heating; in addition, steam sterilization often produces unpleasant odors. Other heat disinfection techniques are dry heat disinfection, which also generates toxic gases such as dioxins and is very energy intensive.

Although most of the medical wastes are harmful, a small part of recyclable medical wastes still exist, such as medical non-prohibited waste plastics, which are disposable plastic devices (including plastic infusion bags, infusion bottles, but not including infusion tubes, syringes, etc.) that are not polluted by patient blood, body fluid, and excrement, and the medical wastes have good recycling value, and the plastic devices can generate a large amount of dioxin during incineration, which seriously harms the environment and human health, but because the prior art lacks a comprehensive treatment technology for the medical non-prohibited waste plastics, especially the effect in the cleaning and disinfection process is very small, the medical wastes are difficult to recycle, not only cause resource waste, but also cause an increase in treatment cost, according to statistics of relevant parts, the quantity of medical non-contraband waste plastics generated in China every year is as much as 130 million tons, and the medical non-contraband waste plastics have great recycling value, however, at present, most of medical non-contraband waste plastics are directly treated with other medical wastes, or are simply treated by illegal personnel and then are directly taken to sell, so that the threat of spreading or diffusing infectious diseases is caused, and therefore, a comprehensive treatment technology aiming at the medical non-contraband waste plastics is urgently needed to realize recycling.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a cleaning treatment and recovery process of medical non-contraband waste plastics, which can realize comprehensive treatment of the recyclable medical non-contraband waste plastics, and introduces a novel disinfection process, and comprises a first stage of crushing and disinfection and a second stage of cleaning and disinfection, wherein the crushing and disinfection realizes rapid solid-liquid separation through an unstable separation device, so that a disinfectant is convenient to recycle, the subsequent cleaning pressure is obviously reduced, the sterilization effect of the medical non-contraband waste plastics is mutually promoted by adopting a mode of co-operation of micron-sized bubbles and a silver ion hydrogen peroxide disinfectant in the cleaning and disinfection process, and the existence of the micron-sized bubbles can be mutually matched with ultrasonic waves, so that the sterilization effect of the micron-sized bubbles and the cleaning effect of the ultrasonic waves are further improved, thereby realizing the harmless treatment of medical non-contraband waste plastics and obtaining recyclable plastic resources.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A cleaning treatment and recovery process of medical non-contraband waste plastics comprises the following steps:

step one, carrying out manual sorting on medical non-contraband waste plastics, and storing the medical non-contraband waste plastics in a classified manner for waiting for treatment;

step two, crushing the sorted medical non-contraband waste plastics and sterilizing the crushed medical non-contraband waste plastics in a first stage;

step three, collecting the mixed liquid of the residual medicament and the disinfectant in the crushed medical non-contraband waste plastics after flowing out for waiting for treatment;

the second step and the third step are simultaneously carried out in an unstable separation device which comprises a crusher, the lower end of the pulverizer is fixedly connected with a variant separation inner bag, the outer end of the variant separation inner bag is sleeved with an outer liquid guide bag, the lower end of the variant separation inner bag is provided with a plurality of evenly distributed weep holes, the lower end of the crusher is provided with a sealing type mounting cover, the inner deformable separating bag and the outer liquid guide bag are both positioned in the sealed mounting cover, the left side and the right side of the outer liquid guide bag are both provided with transmission shafts, the inner end of the sealed mounting cover is provided with a pair of driving motors, the output ends of the driving motors are connected with the transmission shaft through a coupling, the outer end of the transmission shaft is fixedly connected with a plurality of windmill-shaped striking columns distributed in an annular array mode, the lower end of the sealed mounting cover is fixedly connected with a liquid accumulating box, and the lower end of the liquid accumulating box is communicated with a liquid outlet pipe;

step four, performing multi-stage cleaning on the crushed medical non-contraband waste plastics, wherein a second stage of disinfection is inserted in the process;

fifthly, respectively separating the pp bag mouth and the pe composite film of the bag body and separating the rubber and plastic materials from the cleaned medical non-contraband waste plastics;

and step six, respectively dehydrating and drying the separated medical non-contraband waste plastics, and collecting and packaging the waste plastics.

Further, in the second step, the first stage of sterilization adopts a hydrogen peroxide disinfectant with the mass fraction concentration of 0.1-0.5%, and the hydrogen peroxide disinfectant is sterilized in a spraying mode, the contact area between the hydrogen peroxide disinfectant and the crushed medical non-contraband waste plastics is increased in the spraying mode, the sterilization effect is improved, meanwhile, the hydrogen peroxide disinfectant contains viscous substance polysaccharide, effective sterilization components are adhered to the crushed medical non-contraband waste plastics particles, and the medical non-contraband waste plastics particles are adhered together to form a polymer; keeping the sterilizing effect continuous and simultaneously preventing the separation of the materials during the transportation process.

Furthermore, the inner variant separation bag and the outer liquid guide bag are both made of flexible waterproof fabrics, the inner surfaces of the inner variant separation bag and the outer liquid guide bag are coated with a nano corrosion-resistant layer, the inner variant separation bag is hemispherical, the hemispherical inner variant separation bag can furthest realize the rotation of medical non-contraband waste plastic particles under the stirring action of a windmill type impact column, and the falling speed of liquid is improved.

Furthermore, the lower end of the outer liquid guide bag is fixedly connected with a plurality of uniformly distributed counterweight balls, and the lower end of the outer liquid guide bag is open and exceeds the lower end of the variant separation inner bag by 5-10cm, so that the outer liquid guide bag can always play a role in protecting the variant separation inner bag, and the splashing phenomenon when liquid in the variant separation inner bag falls is prevented.

Further, the multistage cleaning process in the fourth step comprises the following specific processes:

flow 1, microbubble disinfection: soaking medical non-contraband waste plastics to be cleaned in water, introducing a large amount of micron-sized bubbles from the bottom in advance, continuing for 2-3min, adding a proper amount of silver ion hydrogen peroxide disinfectant, and continuing to introduce the bubbles and maintaining for 30-60 min;

and (2) ultrasonic cleaning: when the bubbles do not disappear, starting the ultrasonic generator, maintaining the frequency at 25-30kHz and the time at 5-10 min;

flow 3, flow elution: and leaching the medical non-contraband waste plastics cleaned by ultrasonic waves with pure water, and sampling, detecting and analyzing the leacheate in real time.

The mode through letting in micron order bubble not only can help silver ion hydrogen peroxide disinfectant to spread in aqueous, improve the area of contact with medical non-banned class waste plastics, the characteristic of micron order bubble and silver ion hydrogen peroxide disinfectant is cooperateed each other and is improved the disinfection and sterilization effect simultaneously, and under the effect of ultrasonic wave, the micron order bubble can release huge energy, and utilize the peculiar crushing effect, can ionize out super oxide and active hydroxyl, and then realize that the micron order bubble promotes ultrasonic cleaning performance, ultrasonic wave improves the disinfection and sterilization effect of micron order bubble, and the mobile washing plays clear purpose as last cleaning process, including impurity, the foreign matter, rubbish, harmful substance and disinfectant.

Furthermore, the silver ion hydrogen peroxide disinfectant comprises hydrogen peroxide and colloidal particle silver ions, which can penetrate and destroy cell walls and cell membranes of microorganisms, enter the cells to necrose key functional components of the microorganisms, so that the cells die, oxygen molecules released by the hydrogen peroxide oxidize enzyme systems of the microorganisms, colloidal silver ions obstruct basic metabolic functions of bacteria (enzymes) or influence membrane structures (microactivities) of the bacteria (enzymes), and the colloidal silver ions can play a role of a stabilizer and a catalyst for the hydrogen peroxide, so that the defects of the hydrogen peroxide are removed, the advantages of the hydrogen peroxide are enhanced, the effect of 1+1 & gt 2 is generated, and the effects of more rapid and more lasting sterilization and disinfection are achieved.

Further, the diameter of the bubble is 10 to 25 μm, and the gas in the bubble is nitrogen, the rising speed of the micro bubble with the diameter of 50 μm or less in the reaction solution is slow, the rising speed of the bubble with the diameter of 10 μm in the water is 3mm/min, the micro bubble can stay in the water for enough time to fully exert the function, the bubble diameter is in a negative potential peak when 10 to 30 μm, the potential is reduced when the bubble diameter is reduced continuously, the silver ion around is attracted by the charge on the surface of the dispersion particle to improve the catalytic activity, and theoretically, the bubble forming consumption capacity depends on the interface area, the interface area is determined by the surface tension of the bubble, the micro bubble with the diameter of less than 25 μm has strong surface rigidity, is similar to a high pressure balloon and is not easy to break, and in conclusion, the micro bubble with the diameter of 10 to 25 μm can exist stably, meanwhile, the promotion effect on the catalytic activity and the sterilization effect of silver ions can be fully exerted, and meanwhile, the micro bubbles are vacuum negative pressure bubbles and can release huge energy; has special crushing effect, can ionize superoxide and active hydroxyl, is consistent with the sterilization mechanism of hydrogen peroxide, and has cooperative action under the coordination with silver ions.

Furthermore, the sorting process in the fifth step adopts a negative pressure airflow sorting machine and a high-voltage electric field material sorting machine.

Further, the dehydration and drying process in the sixth step is to perform high-temperature drying after the rotary extrusion dehydration, wherein the temperature is kept between 60 and 80 ℃, and the drying is performed until the water content is lower than 3 percent.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme can realize carrying out the integrated processing to the medical non-contraband class waste plastics that can retrieve, and introduce neotype disinfection technology, the crushing disinfection who divide into the first stage and the cleaning and disinfecting of second stage, wherein smash the disinfection and realize quick solid-liquid separation through unsteady separator, make things convenient for recycle antiseptic solution, show simultaneously and reduce subsequent cleaning pressure, adopt the mode of micron order bubble and the cooperation of silver ion hydrogen peroxide disinfectant jointly in the cleaning and disinfecting process, the mutual promotion is to the virus killing and sterilization effect of medical non-contraband class waste plastics, simultaneously the existence of micron order bubble can also mutually support with the ultrasonic wave, the bactericidal effect and the ultrasonic cleaning effect of micron order bubble further improve, thereby realize the innocent treatment to medical non-contraband class waste plastics, obtain the plastic resources that can recycle.

(2) The silver ion hydrogen peroxide disinfectant is crushed in the low-concentration peroxide disinfectant, and then the silver ion hydrogen peroxide disinfectant is used for enhancement treatment during cleaning and disinfection, so that the treatment result which is higher in speed and more efficient than that of the existing treatment method is achieved.

Drawings

FIG. 1 is a schematic flow chart of the present invention;

FIG. 2 is a schematic structural view of an unstable separation apparatus according to the present invention;

FIG. 3 is a schematic view of a multi-stage cleaning structure according to the present invention;

FIG. 4 is a schematic view of the main flow of the multi-stage cleaning section of the present invention.

The reference numbers in the figures illustrate:

the device comprises a crusher 1, a variant separation inner bag 2, an outer liquid guide bag 3, a liquid leakage hole 4, a sealing type mounting cover 5, a liquid accumulation box 6, a liquid outlet pipe 7, a transmission shaft 8 and a windmill type impact column 9.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used in a broad sense, and for example, "connected" may be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements.

Example 1:

referring to fig. 1, a cleaning, treating and recycling process for medical non-contraband waste plastics comprises the following steps:

fifthly, respectively separating the pp bag mouth and the pe composite film of the bag body and separating rubber and plastic materials of the cleaned medical non-contraband waste plastics by adopting a negative pressure airflow separator and a high-voltage electric field material separator;

and step six, respectively dehydrating and drying the separated medical non-contraband waste plastics, specifically, drying at high temperature after rotary extrusion dehydration, keeping the temperature at 80 ℃, drying until the water content is lower than 3%, and collecting and packaging.

In the second step, hydrogen peroxide disinfectant with the mass fraction concentration of 0.5% is adopted for disinfection in a spraying mode, the contact area between the hydrogen peroxide disinfectant and the crushed medical non-contraband waste plastics is increased in the spraying mode, the disinfection and sterilization effects are improved, meanwhile, the hydrogen peroxide disinfectant contains viscous substance polysaccharide, effective disinfection components are adhered to the crushed medical non-contraband waste plastics particles, and the medical non-contraband waste plastics particles are adhered together to form a polymer; keeping the sterilizing effect continuous and simultaneously preventing the separation of the materials during the transportation process.

Referring to fig. 2, the second step and the third step are performed simultaneously in an unstable separation device, the unstable separation device includes a pulverizer 1, a variant separation inner bag 2 is fixedly connected to the lower end of the pulverizer 1, an outer liquid guide bag 3 is sleeved at the outer end of the variant separation inner bag 2, a plurality of uniformly distributed weep holes 4 are drilled at the lower end of the variant separation inner bag 2, a sealing type mounting cover 5 is installed at the lower end of the pulverizer 1, the variant separation inner bag 2 and the outer liquid guide bag 3 are both located in the sealing type mounting cover 5, transmission shafts 8 are respectively arranged at the left side and the right side of the outer liquid guide bag 3, a pair of driving motors are installed at the inner end of the sealing type mounting cover 5, the output ends of the driving motors are connected with the transmission shafts 8 through couplings, a plurality of windmill-type hitting posts 9 distributed in an annular array are fixedly connected to the outer end of the transmission shafts 8, the windmill-type hitting, make it all the time in motion state, accelerate the liquid whereabouts on it, 5 lower extremes fixedly connected with hydrops case 6 of canned type installation cover, hydrops case 6 lower extreme intercommunication has drain pipe 7, and step two, three carry out simultaneously and can show and shorten the processing time, utilize unsteady separator to come initiative acceleration simultaneously and realize solid-liquid separation, can retrieve the antiseptic solution on the one hand and handle and remain the medicament, be difficult for the polluted environment when the transportation, on the other hand the pressure of follow-up cleaning process of greatly reduced.

The inner bag 2 is separated to the variant and outer drain bag 3 all adopts flexible waterproof surface fabric to make, and the internal surface coating has nanometer corrosion resistant layer, the inner bag 2 is the hemisphere is separated to the variant, hemispherical variant separation inner bag 2 can realize to the at utmost that medical treatment is not prohibited class waste plastics granule and hit the rotation under the post 9 stirring effect is hit to the windmill type, improve the speed that liquid falls, a plurality of evenly distributed's of outer drain bag 3 lower extreme fixedly connected with counter weight ball, and the lower extreme surpasss 2 lower extremes 10cm of variant separation inner bag simultaneously for uncovered, can make outer drain bag 3 play the guard action to the inner bag 2 is separated to the variant all the time, the phenomenon of splashing when preventing the interior liquid of variant separation inner bag 2 from falling.

Referring to fig. 3-4, the multi-stage cleaning process in step four includes the following specific steps:

flow 1, microbubble disinfection: soaking medical non-contraband waste plastics to be cleaned in water, introducing a large amount of micron-sized bubbles from the bottom in advance, adding a proper amount of silver ion hydrogen peroxide disinfectant after lasting for 3min, and continuously introducing the bubbles and maintaining for 60 min;

and (2) ultrasonic cleaning: when the bubbles do not disappear, starting the ultrasonic generator, maintaining the frequency at 30kHz and the time at 10 min;

The silver ion hydrogen peroxide disinfectant comprises hydrogen peroxide (571g/L) and colloidal particle silver ions (0.36g/L), can penetrate and destroy cell walls and cell membranes of microorganisms, enter the interior of cells to necrotize key functional components (such as DNA and enzyme), thereby causing cell death, oxidizing enzyme systems of microorganisms by oxygen molecules (nascent oxygen) released by hydrogen peroxide, preventing basic metabolism functions of bacteria (enzymes) or influencing membrane structures (microactivity) of the bacteria (enzymes) by colloidal silver ions, and playing a role of a stabilizer and a catalyst for the hydrogen peroxide, thereby removing the defects of the hydrogen peroxide (instability, almost no sterilization capability under the condition of being close to alkaline environment and the like), strengthening the advantages of the hydrogen peroxide, generating the effect of 1+1 > 2, and playing the effects of more rapid and more lasting sterilization and disinfection effects.

The diameter of the air bubble is 10-25 μm, and the gas in the air bubble is nitrogen gas, firstly the rising speed of the micro air bubble with the diameter less than 50 μm in the reaction liquid is slow, the rising speed of the air bubble with the diameter less than 10 μm in the water is 3mm/min, the air bubble can stay in the water for enough time to fully exert the function, the air bubble diameter is in a negative potential peak when 10-30 μm, the potential tends to decrease when the air bubble diameter continues to decrease, the silver ion around is attracted by the charge on the surface of the dispersion particle to improve the catalytic activity, in addition, the air bubble forming consumption capability depends on the interface area theoretically, the interface area is determined by the surface tension of the air bubble, the surface rigidity of the micro air bubble with the diameter less than 25 μm is strong, the micro air bubble is similar to a high pressure balloon and is not easy to break, in conclusion, the micro air bubble with the diameter of 10-25 μm can stably exist, and the promotion effect, meanwhile, the micro bubbles are vacuum negative pressure bubbles and can release huge energy; has special crushing effect, can ionize superoxide and active hydroxyl, is consistent with the sterilization mechanism of hydrogen peroxide, and has cooperative action under the coordination with silver ions.

The invention can realize comprehensive treatment on recyclable medical non-contraband waste plastics, introduces a novel disinfection process, and is divided into crushing disinfection in a first stage and cleaning disinfection in a second stage, wherein the crushing disinfection realizes rapid solid-liquid separation through an unstable separation device, so that disinfectant can be conveniently recycled, and meanwhile, the subsequent cleaning pressure is obviously reduced.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. A cleaning treatment and recovery process of medical non-contraband waste plastics is characterized in that: the method comprises the following steps:

the second step and the third step are carried out simultaneously in an unstable separation device, the unstable separation device comprises a crusher (1), a variant separation inner bag (2) is fixedly connected to the lower end of the crusher (1), an outer liquid guide bag (3) is sleeved at the outer end of the variant separation inner bag (2), a plurality of liquid leakage holes (4) which are uniformly distributed are drilled at the lower end of the variant separation inner bag (2), a sealed installation cover (5) is installed at the lower end of the crusher (1), the variant separation inner bag (2) and the outer liquid guide bag (3) are both located in the sealed installation cover (5), transmission shafts (8) are arranged on the left side and the right side of the outer liquid guide bag (3), a pair of driving motors are installed at the inner ends of the sealed installation cover (5), the output ends of the driving motors are connected with transmission shafts (8) through couplers, a plurality of windmill type impact columns (9) which are distributed in an annular array are fixedly connected to the outer ends of the transmission, the lower end of the sealed mounting cover (5) is fixedly connected with a liquid accumulation box (6), and the lower end of the liquid accumulation box (6) is communicated with a liquid outlet pipe (7);

2. The cleaning, treating and recycling process of medical non-contraband waste plastics as claimed in claim 1, wherein the cleaning, treating and recycling process comprises the following steps: in the second step, the first stage of disinfection adopts 0.1-0.5% hydrogen peroxide disinfectant by mass fraction concentration, and adopts a spraying mode for disinfection.

3. The cleaning, treating and recycling process of medical non-contraband waste plastics as claimed in claim 1, wherein the cleaning, treating and recycling process comprises the following steps: the inner variant separation bag (2) and the outer liquid guide bag (3) are both made of flexible waterproof fabrics, a nano corrosion-resistant layer is coated on the inner surface of the inner variant separation bag, and the inner variant separation bag (2) is hemispherical.

4. The cleaning, treating and recycling process of medical non-contraband waste plastics as claimed in claim 1, wherein the cleaning, treating and recycling process comprises the following steps: the lower end of the outer liquid guide bag (3) is fixedly connected with a plurality of uniformly distributed counterweight balls, and the lower end of the outer liquid guide bag is open and exceeds the lower end of the inner variant separation bag (2) by 5-10 cm.

5. The cleaning, treating and recycling process of medical non-contraband waste plastics as claimed in claim 1, wherein the cleaning, treating and recycling process comprises the following steps: the multistage cleaning process in the fourth step comprises the following specific processes:

6. The cleaning, treating and recycling process of medical non-contraband waste plastics as claimed in claim 5, wherein the cleaning, treating and recycling process comprises the following steps: the silver ion hydrogen peroxide disinfectant comprises hydrogen peroxide (571g/L) and colloidal particle silver ions (0.36 g/L).

7. The cleaning, treating and recycling process of medical non-contraband waste plastics as claimed in claim 5, wherein the cleaning, treating and recycling process comprises the following steps: the diameter of the bubble is 10-25 μm, and the gas in the bubble is nitrogen.

8. The cleaning, treating and recycling process of medical non-contraband waste plastics as claimed in claim 1, wherein the cleaning, treating and recycling process comprises the following steps: and the sorting process in the fifth step adopts a negative pressure airflow sorting machine and a high-voltage electric field material sorting machine.

9. The cleaning, treating and recycling process of medical non-contraband waste plastics as claimed in claim 1, wherein the cleaning, treating and recycling process comprises the following steps: and the dehydration and drying process in the sixth step is to perform high-temperature drying after the rotary extrusion dehydration, wherein the temperature is kept at 60-80 ℃, and the drying is performed until the water content is lower than 3%.