Waste anesthetic treatment method

Abstract

The invention relates to the field of waste medicine treatment, and discloses a waste anesthetic treatment method which comprises the following steps: firstly, contacting waste anesthetic with an adsorbent to adsorb and remove volatile waste anesthetic; the method comprises the following steps: carrying out a screening and filtering step and a first adsorption process on waste anesthetic to remove suspended matters and floating matters so as to obtain first waste anesthetic liquid; carrying out oxidation reaction and precipitation on the first anesthesia waste liquid to obtain a bottom precipitate and a supernatant liquid; carrying out gravity concentration on the bottom layer precipitate and then discharging; performing hydrolytic acidification on the supernatant liquid, and adjusting the pH value after the hydrolytic acidification step to obtain second anesthesia waste liquid; putting a sterilizing agent, purifying the second anesthesia waste liquid by using a permeable membrane to obtain a purified liquid, and discharging the purified liquid to complete the anesthesia waste medicine treatment process; the problems that in the prior art, medical staff cannot systematically treat waste anesthetic, so that the environment is polluted, and the body health is easily affected due to long-term contact with the waste anesthetic are solved.

Description

Technical Field

[0001] The invention relates to the field of waste medicine treatment, and in particular to a method for treating waste anesthetic medicine. Background Art

[0002] Medical waste now refers to waste that is directly or indirectly infectious, toxic or otherwise hazardous, generated by medical institutions in the course of medical treatment, prevention, health care and other related activities. Different types of medical waste are treated in different ways, but there is still no good way to deal with waste narcotic drugs, which leads to direct discarding, which can easily cause workers who come into contact with the trash cans to come into contact with the waste drugs, causing human harm.

[0003] At present, the traditional method of treating anesthetic waste is through manual classification. This method requires high workload for the workers, and long-term exposure to anesthetic waste can easily affect their health. Anesthetic waste that has not undergone complex reactions and is directly discharged into nature will also cause environmental pollution. Therefore, a systematic and environmentally friendly method for treating anesthetic waste is now necessary. Summary of the invention

[0004] The present invention aims to provide a method for treating waste anesthetic drugs, which solves the problem in the prior art that medical personnel are unable to systematically treat waste anesthetic drugs, resulting in environmental pollution and long-term exposure to waste anesthetic drugs that easily affects physical health.

[0005] In order to achieve the above object, the present invention provides the following method: The present invention provides a method for treating waste anesthetic drugs: S1: contacting the anesthetic waste drugs with an adsorbent to adsorb and remove volatile anesthetic waste drugs in the anesthetic waste drugs; S2: subjecting the anesthetic waste drug after contact with the adsorbent to a screening and filtering step and a first adsorption process to remove suspended matter and floating matter to obtain a first anesthetic waste liquid; S3: subjecting the first anesthetic waste liquid to an oxidation reaction, and subjecting the first anesthetic waste liquid to precipitation to obtain a bottom precipitate and a supernatant; S4: discharging the bottom sediment after gravity concentration; S5: hydrolyzing and acidifying the supernatant, and adjusting the pH value after the hydrolysis and acidification step to obtain a second anesthetic waste liquid; S6: Add a sterilant to the second anesthetic waste liquid, use an osmotic membrane to purify the second anesthetic waste liquid to obtain a purified liquid, discharge the purified liquid, and complete the anesthetic waste drug treatment process.

[0006] Preferably, the adsorbent is at least one of activated carbon, zeolite, silica, mesoporous silica and alumina.

[0007] Preferably, the step of contacting the waste anesthetic drugs with an adsorbent to adsorb and remove volatile waste anesthetic drugs in the waste anesthetic drugs comprises: contacting the waste anesthetic drugs with an adsorbent to adsorb and remove volatile waste anesthetic drugs in the waste anesthetic drugs, and contacting a gas containing nitrous oxide with a catalyst for decomposing the nitrous oxide to decompose the nitrous oxide.

[0008] Preferably, the step of screening and filtering the waste anesthetic drugs after contacting with the adsorbent comprises: passing the waste anesthetic drugs after contacting with the adsorbent through a filter layer, wherein the filter pore size of the filter layer is 700 to 800 meshes.

[0009] Preferably, the first adsorption process is: adding activated carbon to the anesthetic waste drugs undergoing the screening and filtration step to adsorb suspended matter and floating matter in the anesthetic waste drugs to obtain a first anesthetic waste liquid.

[0010] Preferably, the step of subjecting the first anesthetic waste liquid to an oxidation reaction, precipitating the first anesthetic waste liquid that has undergone the oxidation reaction, and obtaining a bottom precipitate and an upper clear liquid comprises: discharging the first anesthetic waste liquid into an oxidation tank for aerobic treatment, intermittently adding aerobic degrading bacteria to the first anesthetic waste liquid, and the amount added is 0.01% to 0.02% of the volume of the first anesthetic waste liquid; after the first anesthetic waste liquid has undergone an oxidation reaction, allowing the first anesthetic waste liquid to stand and precipitate to obtain a bottom precipitate and an upper clear liquid.

[0011] Preferably, hydrolysis and acidification bacteria are added to the supernatant to carry out the hydrolysis and acidification step, and the reaction temperature of the hydrolysis and acidification is 20 o C~25 o C.

[0012] Preferably, the supernatant is hydrolyzed and acidified, and after the hydrolysis and acidification step, the pH value of the solution is adjusted to 6.5-7.5.

[0013] Preferably, the sterilizer includes: one or more of tea tree essential oil, clove leaf oil, forsythia oil, and one of chitosan, eugenol and biloba lactone.

[0014] Preferably, the permeable membrane is a polysulfone base membrane and an aromatic polyamide membrane.

[0015] The beneficial effects of the present invention are as follows: the present invention brings anesthetic waste drugs into contact with an adsorbent, adsorbs anesthetic gas, and uniformly treats anesthetic drugs, thereby saving more resources for treating anesthetic waste drugs. Then, the present invention successively undergoes screening and filtration and the first adsorption process, so that new drugs produced by anesthetic drugs due to expiration or mixing with other drugs can also be uniformly treated, and the intervention of other drugs will not affect the anesthetic drug treatment process. Then, an oxidation reaction is performed to separate the bottom precipitate and the upper clear liquid. The lower precipitate is gravity concentrated to reduce the volume of natural space occupied. The upper clear liquid is hydrolyzed and acidified to adjust the pH value to prevent the waste liquid from corroding soil and plants due to the acidic effect. Then, a sterilizer is added for purification, and the liquid is finally treated and then discharged. The complete system and stable anesthetic waste discharge process are beneficial to environmental protection and maintaining the healthy cycle of natural resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0017] Figure 1 A schematic flow chart of a method for treating waste anesthetic drugs provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the technical personnel in the technical field better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in combination with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, device, product or end including a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units inherent to these processes, methods, products or ends.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] At present, the traditional method of treating anesthetic waste is through manual classification. This method requires high workload for the workers, and long-term exposure to anesthetic waste can easily affect their health. Anesthetic waste that has not undergone complex reactions and is directly discharged into nature will also cause environmental pollution. Therefore, a systematic and environmentally friendly method for treating anesthetic waste is now necessary.

[0022] The present invention aims to provide a method for treating waste anesthetic drugs, which solves the problem in the prior art that medical personnel are unable to systematically treat waste anesthetic drugs, resulting in environmental pollution and long-term exposure to waste anesthetic drugs that easily affects physical health.

[0023] like Figure 1 As shown, a specific embodiment of the present invention provides a method for treating waste anesthetic drugs, comprising the following steps: S1: contacting the anesthetic waste drugs with the adsorbent to adsorb and remove the volatile anesthetic waste drugs in the anesthetic waste drugs.

[0024] In an embodiment of the present invention, the adsorbent is: at least one of activated carbon, zeolite, silica, mesoporous silica and alumina; the anesthetic waste is brought into contact with the adsorbent to adsorb and remove volatile anesthetic waste in the anesthetic waste, and the gas containing nitrous oxide is brought into contact with a catalyst for decomposing nitrous oxide to decompose nitrous oxide.

[0025] S2: The anesthetic waste drugs that have come into contact with the adsorbent are subjected to a screening and filtering step and a first adsorption process to remove suspended matter and floating matter to obtain a first anesthetic waste liquid.

[0026] In an embodiment of the present invention, the anesthetic waste drugs after contact with the adsorbent are passed through a filter layer, and the filter pore size of the filter layer is 700-800 meshes; activated carbon is added to the anesthetic waste drugs undergoing the screening and filtering step to adsorb suspended matter and floating matter in the anesthetic waste drugs to obtain a first anesthetic waste liquid, wherein the suspended matter and floating matter are the suspended matter and floating matter produced by the mixed reaction of the anesthetic and the remaining liquid medicines, the impurities dropped into the anesthetic during the storage of the anesthetic, and the anesthetic liquid that has deteriorated due to the storage time of the anesthetic exceeding the shelf life of the liquid medicine.

[0027] S3: subjecting the first anesthetic waste liquid to an oxidation reaction, and subjecting the first anesthetic waste liquid to precipitation to obtain a bottom precipitate and an upper clear liquid.

[0028] In an embodiment of the present invention, the first anesthetic waste liquid is discharged into an oxidation tank for aerobic treatment, and aerobic degradation bacteria are intermittently added to the first anesthetic waste liquid, and the amount added is 0.01% to 0.02% of the volume of the first anesthetic waste liquid; after the first anesthetic waste liquid undergoes an oxidation reaction, the first anesthetic waste liquid is allowed to settle to obtain a bottom precipitate and an upper clear liquid, and the first anesthetic waste liquid is stirred during the oxidation reaction, and aerobic degradation bacteria are added to the first anesthetic waste liquid while stirring, and after all the aerobic degradation bacteria have been added, stirring is continued for 5-10 minutes, and after the clear liquid and the precipitate are stabilized, the oxidation reaction process is completed.

[0029] S4: The bottom sediment is concentrated by gravity and then discharged.

[0030] In the embodiment of the present invention, the clear liquid is extracted by extraction and filtration to achieve separation of the bottom sediment and the upper clear liquid; the bottom sediment is concentrated into a fixed shape by gravity through a press and then discharged into nature for natural landfill.

[0031] S5: The supernatant is hydrolyzed and acidified, and after the hydrolysis and acidification step, the pH value is adjusted to obtain a second anesthetic waste liquid.

[0032] In the embodiment of the present invention, hydrolysis acidification bacteria are added to the supernatant to carry out the hydrolysis acidification step, and the reaction temperature of the hydrolysis acidification is 20 o C~25 o C; The supernatant is hydrolyzed and acidified. After the hydrolysis and acidification step, the pH value of the solution is adjusted to 6.5~7.5; Hydrolysis refers to the biochemical reaction that takes place outside the microbial cell before the organic matter enters the microbial cell. Microorganisms complete biocatalytic reactions by releasing extracellular free enzymes or fixed enzymes attached to the outer wall of the cell; Acidification is a typical fermentation process, and the metabolites of microorganisms are mainly various organic acids; Mechanistically, hydrolysis and acidification are two stages of the anaerobic digestion process, but the treatment purposes of hydrolysis and acidification in different processes are different; The purpose of hydrolysis in the aerobic biological treatment process of hydrolysis and acidification is mainly to convert the insoluble organic matter in the original waste liquid into soluble organic matter, mainly to convert the difficult-to-biodegrade organic matter into easily biodegradable organic matter, to improve the biodegradability of anesthetic wastewater, so as to facilitate subsequent aerobic treatment. Hydrolysis is mainly used for the pretreatment of low-concentration difficult-to-degrade wastewater.

[0033] S6: Add a sterilant to the second anesthetic waste liquid, use an osmotic membrane to purify the second anesthetic waste liquid to obtain a purified liquid, discharge the purified liquid, and complete the anesthetic waste drug treatment process.

[0034] In an embodiment of the present invention, the sterilizer includes: one or more of tea tree essential oil, clove leaf oil, forsythia oil, and also includes one of chitosan, styrax and biloba lactone; it is mainly a chemical disinfection and sterilization method, and the principle of chemical disinfection is: first, to denature proteins, phenols, alcohols, aldehydes and heavy metals, etc., can coagulate or denature proteins, so that the growth and reproduction of viruses are inhibited and die; second, to interfere with the enzyme system, heavy metal salts can combine with the sulfhydryl enzymes of microorganisms, reduce or eliminate their activity, thereby affecting the metabolism of pathogens; oxidants and halogens can also oxidize certain enzyme systems in microorganisms; third, to increase the permeability of the cell plasma membrane, detergents can reduce the surface tension of the pathogen cell membrane, increase the permeability of the cell membrane, and cause the leakage of substances in the bacteria, causing death; the permeable membrane is a polysulfone base membrane and an aromatic polyamide membrane.

[0035] The beneficial effects of the present invention are as follows: the present invention brings anesthetic waste drugs into contact with an adsorbent, adsorbs anesthetic gas, and uniformly treats anesthetic drugs, thereby saving more resources for treating anesthetic waste drugs. Then, the present invention successively undergoes screening and filtration and the first adsorption process, so that new drugs produced by anesthetic drugs due to expiration or mixing with other drugs can also be uniformly treated, and the intervention of other drugs will not affect the anesthetic drug treatment process. Then, an oxidation reaction is performed to separate the bottom precipitate and the upper clear liquid. The lower precipitate is gravity concentrated to reduce the volume of natural space occupied. The upper clear liquid is hydrolyzed and acidified to adjust the pH value to prevent the waste liquid from corroding soil and plants due to the acidic effect. Then, a sterilizer is added for purification, and the liquid is finally treated and then discharged. The complete system and stable anesthetic waste discharge process are beneficial to environmental protection and maintaining the healthy cycle of natural resources.

[0036] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical schemes or characteristics in the scheme is not described in detail here; it should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the scheme of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A method for treating waste anesthetic drugs, characterized in that: The method comprises: S1: contacting the anesthetic waste drugs with an adsorbent to adsorb and remove volatile anesthetic waste drugs in the anesthetic waste drugs; S2: subjecting the anesthetic waste drug after contact with the adsorbent to a screening and filtering step and a first adsorption process to remove suspended matter and floating matter to obtain a first anesthetic waste liquid; S3: subjecting the first anesthetic waste liquid to an oxidation reaction, and subjecting the first anesthetic waste liquid to precipitation to obtain a bottom precipitate and a supernatant; S4: discharging the bottom sediment after gravity concentration; S5: hydrolyzing and acidifying the supernatant, and adjusting the pH value after the hydrolysis and acidification step to obtain a second anesthetic waste liquid; S6: Add a sterilant to the second anesthetic waste liquid, use an osmotic membrane to purify the second anesthetic waste liquid to obtain a purified liquid, discharge the purified liquid, and complete the anesthetic waste drug treatment process.

2. A method for treating waste anesthetic drugs according to claim 1, characterized in that: The adsorbent is at least one of activated carbon, zeolite, silica, mesoporous silica and alumina.

3. A method for treating anesthetic waste according to claim 1, characterized in that: The step of contacting the waste anesthetic drugs with an adsorbent to remove volatile waste anesthetic drugs from the waste anesthetic drugs by adsorption comprises: The anesthetic waste is brought into contact with an adsorbent to remove volatile anesthetic waste in the anesthetic waste, and the gas containing nitrous oxide is brought into contact with a catalyst for decomposing the nitrous oxide to decompose the nitrous oxide.

4. A method for treating anesthetic waste according to claim 1, characterized in that: The step of screening and filtering the anesthetic waste drugs after contacting the adsorbent comprises: The anesthetic waste drugs after contacting the adsorbent pass through a filter layer, and the filter pore size of the filter layer is 700 to 800 meshes.

5. A method for treating anesthetic waste according to claim 4, characterized in that: The first adsorption process is: Activated carbon is added to the anesthetic waste medicine in the screening and filtering step to adsorb suspended matter and floating matter in the anesthetic waste medicine to obtain a first anesthetic waste liquid.

6. A method for treating anesthetic waste according to claim 1, characterized in that: The step of subjecting the first anesthetic waste liquid to an oxidation reaction, and precipitating the first anesthetic waste liquid subjected to the oxidation reaction to obtain a bottom precipitate and a supernatant comprises: Discharging the first anesthetic waste liquid into an oxidation tank for aerobic treatment, and intermittently adding aerobic degradation bacteria to the first anesthetic waste liquid in an amount of 0.01% to 0.02% of the volume of the first anesthetic waste liquid; After the first anesthetic waste liquid is subjected to oxidation reaction, the first anesthetic waste liquid is allowed to settle to obtain a bottom precipitate and an upper clear liquid.

7. A method for treating waste anesthetic drugs according to claim 6, characterized in that: Add hydrolysis acidification bacteria to the supernatant to carry out the hydrolysis acidification step, and the reaction temperature of the hydrolysis acidification is 20 o C~25 o C.

8. A method for treating waste anesthetic drugs according to claim 7, characterized in that: The supernatant is hydrolyzed and acidified, and after the hydrolysis and acidification step, the pH value of the solution is adjusted to 6.5-7.

5.

9. A method for treating waste anesthetic drugs according to claim 1, characterized in that: The sterilizer includes: one or more of tea tree essential oil, clove leaf oil, and forsythia oil, and also includes one of chitosan, eugenol and bilobalide.

10. The method for treating waste anesthetic drugs according to claim 1, characterized in that: The permeable membrane is a polysulfone bottom membrane and an aromatic polyamide membrane.

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