Life cycle carbon accounting method and system for express package wastes of different consumer groups

Abstract

The invention provides a carbon accounting method and system for life cycles of express packaging wastes of different consumer groups, and provides a carbon accounting system for yield and life cycle stages of express packaging wastes of three consumer groups including college students, residents and white-collar workers based on typical case cities. The express packaging waste yield of different consumer groups is calculated through the per capita waste yield based on unit time, and the carbon emission of the express packaging waste in the full life cycle stage is calculated according to the express packaging waste yield and the carbon emission factor in each stage. And the function of accurately accounting the carbon emission of express packaging wastes generated by different consumer groups is realized. On the basis of accurately accounting the carbon emission of the express packaging waste generated by different consumer groups, the carbon emission reduction of the express packaging waste in the full life cycle stage is calculated in stages, and a method and empirical data reference about the yield and carbon accounting of the carbon emission of the express packaging waste are provided for different consumer groups.

Description

Technical Field

[0001] The present invention belongs to the technical field of carbon emission accounting of solid waste, and specifically relates to a method and system for life cycle carbon accounting of express packaging waste from different consumer groups. Background Art

[0002] In recent years, with the rapid development of the Internet and e-commerce industries, the way of life and work has changed rapidly, and the express delivery industry has also developed rapidly. At present, the types of express packaging waste can be mainly divided into corrugated boxes, plastic bags, envelope bags, bubble bags, foam boxes and woven bags. Since a large number of corrugated boxes and foam boxes need to be sealed with tape, tape has also become an important component of express packaging waste that cannot be ignored.

[0003] According to relevant literature research, most of the recycled plastics used in the production of express packaging plastic bags in my country come from recycled polyethylene films in the agricultural sector. These recycled materials may transfer a large amount of pesticide residues to the express industry during the process of remaking plastic bags, and eventually enter the soil through landfill, causing serious pollution to surface water and groundwater. Due to the corrosion resistance and chemical stability of plastics, most plastic fragments are non-degradable or difficult to degrade, such as polyvinyl chloride (PVC), polyethylene (PE), expanded polystyrene (EPS), polyethylene terephthalate (PET), etc. These microplastic particles are chemically hazardous due to their potential toxicity or easy absorption of other pollutants, and may also leak into the marine environment to deteriorate the marine ecosystem.

[0004] At present, except for most of the corrugated boxes and a small amount of recyclable plastic bags, which are recycled at the end, most of the express packaging waste is mixed into the urban domestic waste channel, mainly for landfill and incineration. The landfill process of domestic waste not only occupies a large amount of land resources, but also brings negative environmental impacts, such as the production of a large amount of greenhouse gases (carbon dioxide and methane). A large amount of carbon dioxide greenhouse gas and dioxins are also produced during the incineration of domestic waste, causing air pollution and serious harm to human health. In previous studies, for the carbon emissions of express packaging materials in the life cycle stage, Su et al. calculated that the total carbon emissions in the raw material stage, production stage, and waste treatment and disposal stage reached 1320 Kt CO2e; Kang et al. calculated that the total carbon emissions of express logistics transportation in 2018 were about 1370 KtCO2e; therefore, it is urgent to achieve carbon emission reduction of express packaging.

[0005] In order to mitigate global warming caused by the greenhouse effect, my country has proposed a "dual carbon" emission reduction target in response to the World Climate Change Conference. In order to reduce carbon emissions in the life cycle of express packaging waste, government departments have successively implemented a series of policy measures since 2016 to actively promote the reduction of express packaging materials at the source (limiting excessive packaging and packaging recycling) and the terminal resource utilization of express packaging waste.

[0006] National policies clearly require achieving significant results in reducing the amount of express materials at the source, and strive to ensure that more than 80% of e-commerce express parcels are no longer repackaged; require the practice of a green lifestyle, promote the resource utilization of domestic waste, strengthen the recycling of express packaging, encourage express outlets in campuses, communities and other places to carry out centralized recycling of express packaging cartons, and moderately increase the reuse ratio; standardize the classification, delivery and transportation disposal of express packaging waste, promote the classification and disposal of express packaging waste, and increase the resource and energy utilization ratio.

[0007] The industry standard clearly states the requirement of "avoiding excessive packaging". Courier companies should follow the principles of environmental protection and conservation, and carry out packaging operations in a reasonable manner according to the nature, size and weight of the items in mail and express mail, prevent excessive packaging, and avoid excessive wrapping of tape, and minimize the number of packaging layers, voids and fillers. It is required that a comprehensive express green packaging standard system be established, that the phenomenon of excessive packaging of express delivery by large brand e-commerce companies be significantly improved, and that a group of typical examples of e-commerce express delivery reduction be cultivated and selected in the e-commerce industry; that the proportion of recyclable express packaging used by intra-city express delivery reach 10%, that the scale of reuse of old cartons be further expanded, and that express packaging basically achieve green transformation.

[0008] Express packaging waste is of great significance to the reduction of pollution and carbon emissions in the field of solid waste. At present, the relevant research on carbon emission accounting of express packaging waste is mainly concentrated at the national level, and there is a lack of systematic research reports on the life cycle stage of (urban) consumer types at the regional level. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide a method and system for carbon accounting of the life cycle of express packaging waste from different consumer groups, which is used to accurately calculate the carbon emissions of express packaging waste generated by different consumer groups.

[0010] The technical solution adopted by the present invention to solve the above technical problems is: a carbon accounting method for the life cycle of express packaging waste for different consumer groups, comprising the following steps: S1: Calculate the output of express packaging waste for different consumer groups based on the per capita waste output per unit time; S2: Calculate the carbon emissions of express packaging waste in the entire life cycle based on the output and carbon emission factors of express packaging waste at each stage; S3: Calculate the carbon emission reduction of express packaging waste during the entire life cycle.

[0011] According to the above scheme, in step S1, the specific steps are: S11: Calculate the number of packages received or returned per capita by different consumer groups within a period of time based on statistical data; S12: Calculate the total amount of express packaging waste based on the number of packages received, the number of returned packages, and the number of returned packages using secondary packaging by different consumer groups within a period of time; S13: Research locations based on different consumer groups over a period of time i、 Courier company delivery and receiving outlets j Types of express packaging materials x Corresponding specifications y The number of express packaging materials produced by different consumer groups over a period of time is calculated by taking into account the total amount of express packaging materials produced at the corresponding time and place. S14: Calculate the per capita waste generation of express packaging waste by different consumer groups over a period of time; S15: Calculate the total generation of express packaging waste from different consumer groups.

[0012] Furthermore, in step S14, the specific steps are: S141: Calculate the per capita waste generation of express packaging waste according to the weight of different types of packaging waste generated by different consumer groups within a period of time, the total amount of packages of express packaging waste obtained in step S12, and the ratio of express packaging materials generated by different consumer groups within a period of time obtained in step S13; S142: Calculate the per capita waste amount of tape consumed by different consumer groups for express packaging waste over a period of time based on the weight of tape per unit area, the average area of ​​the corresponding dimension of the specification corresponding to the type of express packaging waste, the tape consumption rate per unit area of ​​express packaging waste of the corresponding type and specification, and the total number of packages of express packaging waste; S143: Based on the per capita waste generation of express packaging waste obtained in step S141 and the per capita waste generation of adhesive tape consumed by different consumer groups for express packaging waste in a period of time obtained in step S142, calculate the per capita waste generation of express packaging waste by different consumer groups in a period of time.

[0013] Furthermore, in step S15, the specific steps are: The total amount of express packaging waste for different consumer groups is calculated based on the per capita waste generation of express packaging waste by different consumer groups over a period of time obtained in S143, the number of time periods and the total number of consumer groups.

[0014] According to the above scheme, in step S2, the specific steps are: S21: Calculate the carbon emissions of express packaging waste in the upstream stage; the upstream stage includes the raw material stage and the production and manufacturing stage; S22: Calculate the carbon emissions of express packaging waste in the midstream stage; the midstream stage is the transportation stage; S23: Calculate the carbon emissions in the downstream stage of express packaging waste; the downstream stage includes the waste transportation stage and the treatment and disposal stage.

[0015] Furthermore, in step S21, the specific steps are: S211: Calculate the carbon emissions of express packaging at the raw material stage according to the total amount of express packaging waste of different consumer groups obtained in step S15 and the carbon emission factor of the corresponding express packaging material type at a certain material stage; S212: Calculate the carbon emissions of express packaging in the production and manufacturing stage based on the total amount of express packaging waste of different consumer groups and the carbon emission factors of corresponding express packaging material types in the production and manufacturing stage obtained in step S15.

[0016] Furthermore, in step S22, the specific steps are: Based on the total amount of express packaging waste of different consumer groups obtained in step S15, the proportion and transportation distance of the corresponding transportation mode in the corresponding transportation stage, and the carbon emission factors of the energy types corresponding to different transportation modes, the carbon emissions generated by the express packaging materials consumed by different consumer groups in the package transportation stage are calculated.

[0017] Furthermore, in step S23, the specific steps are: S231: Calculate the carbon emissions of express packaging waste in the transportation stage according to the total amount of express packaging waste of different consumer groups, the proportion of different treatment and disposal methods, the transportation distance of different treatment and disposal methods in the waste transportation stage, and the carbon emission factor in the waste transportation stage obtained in step S15; S232: Calculate the carbon emissions of express packaging waste in the treatment and disposal stage based on the total amount of express packaging waste of different consumer groups, the proportion of treatment and disposal methods of different types of packaging waste, and the carbon emission factors of treatment and disposal methods of different types of waste obtained in step S15.

[0018] Furthermore, in step S3, the specific steps are: S31: Calculate the carbon emissions of the entire life cycle based on the carbon emissions of express packaging waste in the upstream, midstream and downstream stages; S32: Calculate the carbon reduction in the entire life cycle based on the carbon emissions generated by the express packaging materials consumed by different consumer groups during the package transportation stage and the proportion of source reduction obtained in step S22, as well as the total amount of express packaging waste for different consumer groups, the carbon emission factors of the treatment and disposal methods of different types of waste and the proportion of changes in different treatment or disposal methods at the end obtained in step S15.

[0019] Carbon accounting system for the life cycle of express packaging waste for different consumer groups, The waste generation calculation submodule is used to calculate the waste generation of express packaging of different consumer groups based on the per capita waste generation per unit time; The carbon emission calculation submodule is used to calculate the carbon emissions of express packaging waste in the entire life cycle according to the output and carbon emission factor of express packaging waste in each stage; The carbon emission reduction calculation submodule is used to calculate the carbon emission reduction of express packaging waste during the entire life cycle.

[0020] The beneficial effects of the present invention are: 1. The method and system for carbon accounting of express packaging waste in the life cycle for different consumer groups of the present invention, based on typical case cities, proposes a carbon accounting system for the production and life cycle stages of express packaging waste for three consumer groups including college students, residents and white-collar workers. The production of express packaging waste for different consumer groups is calculated based on the per capita waste production per unit time, and the carbon emissions of express packaging waste in the whole life cycle are calculated according to the production and carbon emission factors of express packaging waste in each stage, thereby realizing the function of accurately calculating the carbon emissions of express packaging waste generated by different consumer groups.

[0021] 2. Based on the accurate calculation of the carbon emissions of express packaging waste generated by different consumer groups, the present invention calculates the carbon emission reduction of express packaging waste in the whole life cycle in stages, and provides different consumer groups with methods and empirical data references on the production and carbon accounting of carbon emissions of express packaging waste.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1is a flow chart of an embodiment of the present invention.

[0025] Figure 2 It is a technical roadmap of an embodiment of the present invention.

[0026] Figure 3 It is a system boundary diagram of the carbon emission accounting system in the life cycle stage of an embodiment of the present invention.

[0027] Figure 4 The questionnaire survey analysis of the case city research object of the embodiment of the present invention Figure 1 .

[0028] Figure 5 The questionnaire survey analysis of the case city research object of the embodiment of the present invention Figure 2 .

[0029] Figure 6 This is a characteristic diagram of the output of express packaging waste in holiday months and non-holiday months for the case city research object in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] Example 1 See also Figure 1 , the carbon accounting method of the life cycle of express packaging waste for different consumer groups includes the following steps: S1: Calculate the output of express packaging waste for different consumer groups based on the per capita waste output per unit time; S2: Calculate the carbon emissions of express packaging waste in the entire life cycle based on the output and carbon emission factors of express packaging waste at each stage; S3: Calculate the carbon emission reduction of express packaging waste during the entire life cycle.

[0032] Furthermore, in step S1, the specific steps are: S11: Calculate the number of packages received or returned per capita by different consumer groups within a period of time based on statistical data; S12: Calculate the total amount of express packaging waste based on the number of packages received, the number of returned packages, and the number of returned packages using secondary packaging by different consumer groups within a period of time; S13: Research locations based on different consumer groups over a period of time i、 Courier company delivery and receiving outlets j Types of express packaging materials x Corresponding specifications yThe number of express packaging materials produced by different consumer groups over a period of time is calculated by taking into account the total amount of express packaging materials produced at the corresponding time and place. S14: Calculate the per capita waste generation of express packaging waste by different consumer groups over a period of time; S15: Calculate the total generation of express packaging waste from different consumer groups.

[0033] Furthermore, in step S14, the specific steps are: S141: Calculate the per capita waste generation of express packaging waste according to the weight of different types of packaging waste generated by different consumer groups within a period of time, the total amount of packages of express packaging waste obtained in step S12, and the ratio of express packaging materials generated by different consumer groups within a period of time obtained in step S13; S142: Calculate the per capita waste amount of tape consumed by different consumer groups for express packaging waste over a period of time based on the weight of tape per unit area, the average area of ​​the corresponding dimension of the specification corresponding to the type of express packaging waste, the tape consumption rate per unit area of ​​express packaging waste of the corresponding type and specification, and the total number of packages of express packaging waste; S143: Based on the per capita waste generation of express packaging waste obtained in step S141 and the per capita waste generation of adhesive tape consumed by different consumer groups for express packaging waste in a period of time obtained in step S142, calculate the per capita waste generation of express packaging waste by different consumer groups in a period of time.

[0034] Furthermore, in step S15, the specific steps are: The total amount of express packaging waste for different consumer groups is calculated based on the per capita waste generation of express packaging waste by different consumer groups over a period of time obtained in S143, the number of time periods and the total number of consumer groups.

[0035] In step S2, the specific steps are: S21: Calculate the carbon emissions of express packaging waste in the upstream stage; the upstream stage includes the raw material stage and the production and manufacturing stage; S22: Calculate the carbon emissions of express packaging waste in the midstream stage; the midstream stage is the transportation stage; S23: Calculate the carbon emissions in the downstream stage of express packaging waste; the downstream stage includes the waste transportation stage and the treatment and disposal stage.

[0036] Furthermore, in step S21, the specific steps are: S211: Calculate the carbon emissions of express packaging at the raw material stage according to the total amount of express packaging waste of different consumer groups obtained in step S15 and the carbon emission factor of the corresponding express packaging material type at a certain material stage; S212: Calculate the carbon emissions of express packaging in the production and manufacturing stage based on the total amount of express packaging waste of different consumer groups and the carbon emission factors of corresponding express packaging material types in the production and manufacturing stage obtained in step S15.

[0037] Furthermore, in step S22, the specific steps are: Based on the total amount of express packaging waste of different consumer groups obtained in step S15, the proportion and transportation distance of the corresponding transportation mode in the corresponding transportation stage, and the carbon emission factors of the energy types corresponding to different transportation modes, the carbon emissions generated by the express packaging materials consumed by different consumer groups in the package transportation stage are calculated.

[0038] Furthermore, in step S23, the specific steps are: S231: Calculate the carbon emissions of express packaging waste in the transportation stage according to the total amount of express packaging waste of different consumer groups, the proportion of different treatment and disposal methods, the transportation distance of different treatment and disposal methods in the waste transportation stage, and the carbon emission factor in the waste transportation stage obtained in step S15; S232: Calculate the carbon emissions of express packaging waste in the treatment and disposal stage based on the total amount of express packaging waste of different consumer groups, the proportion of treatment and disposal methods of different types of packaging waste, and the carbon emission factors of treatment and disposal methods of different types of waste obtained in step S15.

[0039] Furthermore, in step S3, the specific steps are: S31: Calculate the carbon emissions of the entire life cycle based on the carbon emissions of express packaging waste in the upstream, midstream and downstream stages; S32: Calculate the carbon reduction in the entire life cycle based on the carbon emissions generated by the express packaging materials consumed by different consumer groups during the package transportation stage and the proportion of source reduction obtained in step S22, as well as the total amount of express packaging waste for different consumer groups, the carbon emission factors of the treatment and disposal methods of different types of waste and the proportion of changes in different treatment or disposal methods at the end obtained in step S15.

[0040] This embodiment is based on a typical case city and proposes a carbon accounting system for the production and life cycle stages of express packaging waste for three consumer groups, including college students, residents, and white-collar workers. The production of express packaging waste for different consumer groups is calculated based on the per capita waste production per unit time. The carbon emissions of express packaging waste in the entire life cycle are calculated according to the production and carbon emission factors of express packaging waste in each stage. This realizes the function of accurately calculating the carbon emissions of express packaging waste generated by different consumer groups.

[0041] Example 2 This embodiment proposes a carbon reduction accounting system for express packaging waste production and life cycle for different consumer groups based on typical case cities. The technical route is as follows: Figure 2 This embodiment proposes a carbon accounting system for the output and life cycle stages of express packaging waste for three consumer groups (college students, residents, and white-collar workers). The types and specifications of express packaging waste are shown in Table 1: Table 1 Detailed list of types and specifications of seven types of express packaging waste

[0042] The life cycle stage mainly includes the raw material stage, the manufacturing stage, the express package transportation stage, the express packaging waste transportation stage, and the treatment and disposal stage. The system boundaries of the carbon emission accounting system in the life cycle stage are as follows: Figure 3 shown.

[0043] The steps of this embodiment are the same as those of embodiment 1, except that each step is applied to a specific example. Specifically, the following steps are included: S1: Calculate the output of express packaging waste from different consumer groups; The output of express packaging waste for different consumer groups is calculated based on the per capita waste output per unit order. The survey period includes holiday months and non-holiday months; the holiday months surveyed are June, November and December. Therefore, the estimation of express packaging waste output includes the following steps: S11: The average number of packages received or returned by different consumer groups during the survey month N y for: (1) Where: N y The number of packages received or returned per capita by different consumer groups in the survey month (holiday month / non-holiday month), in units of pieces / (month·person). Consumer groups include college students, white-collar workers and residents; a x The mean of the number of parcels received or returned in the survey month in different survey scopes, in units of pieces / (month·person); x is the numerical range of received or returned packages, where the numerical range of received packages is 0-20 (including 0, 1-5, 5-10, 10-15, 15-20) and ≥20 (taking 20 as the value), and the numerical range of returned packages is 0-10 (including 0, 1-3, 3-5, 5-7, 7-10) and ≥10 (taking 10 as the value); η xCorresponding numerical range for received or returned packages x The relevant empirical data of this embodiment survey is shown in Figure 4 , 5 .

[0044] S12: Total amount of express packaging waste V for: (2) Where: are the number of packages received and returned by different consumer groups in the survey month, in pieces / (month·person); represents the proportion of returned packages using secondary packaging. This value can refer to the empirical value obtained based on the survey in this embodiment (see Figure 4 , 5 ).

[0045] S13: Generation rate of express packaging materials (excluding tape) by different consumer groups in the survey month P for: (3) Where: E is the sample size of express packaging materials, in pieces; i The sample size of the survey site for different consumer groups, in pieces; j The number of receiving and sending outlets of different express delivery companies, in pieces; T i，j For research location i、 Courier company delivery and receiving outlets j The total amount of express packaging materials in the survey month, in pieces; E i,j,x,y The type of express packaging materials corresponding to the corresponding delivery and receiving outlets x Corresponding specifications y The number of units is pieces. The reference data in this embodiment are obtained based on the case cities. See Table 1 and Figure 6 .

[0046] S14: Calculate the per capita generation of packaging waste by different consumer groups in the survey month; S141: Per capita generation of express packaging waste (excluding tape) W for: (4) Where: WThe per capita waste generation of packaging waste by different consumer groups in the survey month, excluding tape, in kg / (person-month); w x,y is the weight of different types of packaging waste in the survey month for different consumer groups, in kilograms. The other parameters in the formula are the same as those in formula (3).

[0047] S142: Per capita waste generation of adhesive tape for express packaging waste by different consumer groups during the survey month T for: (5) Where: T Survey the monthly per capita production of tape waste for different consumer groups, in kg / (person-month); u is the unit area (1 m ×1 m ) The weight of the tape, in kilograms per square meter; S x,y,a,b,c Types of express packaging waste x Corresponding specifications y The corresponding dimension ( a,b,c ; length, width, height) in square meters; σ x,y,a,b,c is the tape consumption rate per unit area of ​​express packaging waste of corresponding types and specifications (%), V The meaning of is the same as that of formula (2).

[0048] S143: The per capita waste generation G of express packaging waste by different consumer groups in the survey month is: (6) Where: G Survey the monthly per capita waste generation of express packaging waste for different consumer groups, in kg / (person-month); W and T The definitions of are the same as those in formula (4) and formula (5).

[0049] S15: Calculate the total amount of express packaging waste at the city type level for different consumer groups: (7) (8) Where: Q g and QRepresenting consumer groups g and the total amount of express packaging waste at the level of all consumer cities, in kilograms; M Refers to the survey month e The number of (holiday month or non-holiday month), in pieces; H g Representative consumer group g Total number of people; The meanings of other parameters in the formula are the same as those in formula (5) and formula (6).

[0050] S2: Calculate the carbon emissions of express packaging waste during the life cycle at the regional level; The carbon emissions in the life cycle of express packaging waste include three stages: upstream, midstream and downstream. The carbon emissions in each stage are calculated by multiplying the output of the corresponding express packaging waste by the carbon emission factor of the corresponding stage.

[0051] S21: Calculate the carbon emissions in the upstream stage of express packaging waste; The upstream carbon emissions include the raw material stage and material production and manufacturing stage of express packaging. The material types and packaging product carbon emission factors are shown in Table 2: Table 2 Carbon emission factors of express packaging waste raw materials, production, processing and disposal stages

[0052] S211: Calculate the carbon emissions from the raw material stage of express packaging; (9) (10) Where: CE g,Raw and CE Raw Representing consumer groups g Carbon emissions from the raw material stage of express packaging materials consumed by all consumers, in tons of carbon dioxide equivalent, t·CO 2 eq ; CEF x Represents the corresponding express packaging material type x Carbon emission factor for the material stage. The meanings of other parameters in the formula are the same as those in formula (7) and formula (8).

[0053] S212: Calculate carbon emissions during the production and manufacturing stages of express packaging; (11) (12) Where: CE g,Mac and CE Mac Consumer groups g Carbon emissions generated by the express packaging materials consumed during the production and manufacturing stage, in units of t·CO 2 eq ; CEF x For the corresponding express packaging material type x Carbon emission factor for the manufacturing stage. The other parameters in the formula have the same meanings as formula (7) and formula (8).

[0054] S22: Calculate the carbon emissions of express packaging waste in the midstream stage; The midstream stage is the package transportation stage, and the corresponding transportation tool carbon emission factors are shown in Table 3: Table 3 Carbon emission factors of express parcel transportation stage and express packaging waste transportation stage

[0055] (13) (14) Where: CE g,Tra and CE Tra Consumer groups g Carbon emissions generated by express packaging materials consumed by all consumer groups during the package transportation stage, in units of t·CO 2 eq ; Pt,k For the corresponding transport stage k Mode of transport t The proportion of, unit is % Dt,k For the package transportation stage k Corresponding transportation methods t The transport distance in units of km ; CEF Different shipping methods for packages t (Air, rail, road) Carbon emission factor corresponding to the energy type. The meanings of other parameters in the formula are the same as those in formula (7) and formula (8).

[0056] S23: Calculate carbon emissions from the downstream stage of express packaging waste; The downstream stage includes the transportation stage, treatment and disposal stage of express packaging waste. The corresponding carbon emission factors of transportation tools and the carbon emission factors of different treatment and disposal methods are shown in Table 3 and Table 2.

[0057] S231: Calculate the carbon emissions during the transportation of express packaging waste; (15) (16) Where: CEg,Wtra and CEWtra Consumer groups g Carbon emissions from express packaging waste generated by all consumer groups during the waste transportation stage, in units of t·CO2 eq ; Pu For different treatment and disposal methods u Proportion of waste (%; landfill, incineration, resource utilization); DU Different treatment and disposal methods for waste transportation (road transportation by car) u Transportation distance; CE is the carbon emission factor of the waste transportation stage (road automobile transportation). The other parameters in the formula have the same meanings as formula (7) and formula (8).

[0058] S232: Calculate the carbon emissions during the treatment and disposal of express packaging waste; (17) (18) Where: CEg,Dis and CEDis For consumers g Carbon emissions generated by all consumers during the treatment and disposal stages, in units of t·CO2 eq ; Px,u Packaging waste for different types x Different treatment and disposal methods u The proportion of % ; CEFx,u For waste type x Treatment and disposal methods u The carbon emission factor of , the other parameters in the formula have the same meanings as formula (7) and formula (8).

[0059] S3: Calculate the carbon emission reduction of express packaging waste during the entire life cycle; S31: Calculate carbon emissions during the entire life cycle; (19) (20) Where: CEBAU, g and CEBAU Consumer groups g The carbon emissions generated by all consumers in their entire life cycle, in units of t·CO2 eq ; i For each life cycle stage, including upstream, midstream and downstream stages.

[0060] S32: Calculate carbon reduction during the entire life cycle; (twenty one) Where: CERe Represents the amount of carbon emissions reduced in the life cycle due to different reduction paths or measures (such as source reduction and improving resource utilization in the treatment and disposal stage), in units of t·CO2 eq ; θ is the proportion of source reduction (reducing excessive packaging, recycling packaging, etc.). When the reduction path is recycling packaging, θ It can be a coefficient greater than 100%; βu Different treatment or disposal methods for the end u The proportion of change, when the disposal method is resource utilization, β It is the ratio of the increase in resource utilization level when the disposal method is domestic waste disposal; β is the proportion of landfill or incineration reduction. The other parameters in the formula have the same meanings as formula (13) and formula (14).

[0061] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0062] The environment in which this embodiment runs Example 3 This embodiment is used to implement the principle of the above method embodiment to build a carbon accounting system for the life cycle of express packaging waste for different consumer groups, including a waste production calculation submodule, a carbon emission calculation submodule, and a carbon emission reduction calculation submodule; The waste generation calculation submodule is used to calculate the waste generation of express packaging of different consumer groups based on the per capita waste generation per unit time; The carbon emission calculation submodule is used to calculate the carbon emissions of express packaging waste in the entire life cycle according to the output and carbon emission factor of express packaging waste in each stage; The carbon emission reduction calculation submodule is used to calculate the carbon emission reduction of express packaging waste during the entire life cycle.

[0063] Each sub-module is mainly used to implement each step of the method embodiment, which will not be described in detail here.

[0064] It should be pointed out that, according to the needs of implementation, the various steps / components described in this application can be split into more steps / components, and two or more steps / components or partial operations of steps / components can be combined into new steps / components to achieve the purpose of the present invention.

[0065] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware.

[0066] Moreover, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0067] The present application is described with reference to the flowchart of the method and computer program product according to Embodiment 1 of the present application. It should be understood that each process or box in the flowchart or block diagram, and the combination of processes or boxes in the flowchart or block diagram can be implemented by computer program instructions.

[0068] These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the process Figure 1 A process or multiple processes or boxes Figure 1 The life cycle carbon accounting system for express packaging waste for different consumer groups with functions specified in one or more boxes.

[0069] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes or boxes Figure 1 A function specified in one or more boxes.

[0070] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes or boxes Figure 1 The steps of the life cycle carbon accounting method for express packaging waste for different consumer groups specified in one or more boxes.

[0071] The above embodiments are only used to illustrate the design ideas and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The protection scope of the present invention is not limited to the above embodiments. Therefore, any equivalent changes or modifications made based on the principles and design ideas disclosed by the present invention are within the protection scope of the present invention.

Claims

1. The carbon accounting method of the life cycle of express packaging waste for different consumer groups is characterized by: The following steps are involved: S1: Calculate the output of express packaging waste for different consumer groups based on the per capita waste output per unit time; S2: Calculate the carbon emissions of express packaging waste in the entire life cycle based on the output and carbon emission factors of express packaging waste at each stage; S3: Calculate the carbon emission reduction of express packaging waste during the entire life cycle.

2. The method for calculating carbon emissions from express packaging waste life cycle for different consumer groups according to claim 1 is characterized by: In the step S1, the specific steps are: S11: Calculate the number of packages received or returned per capita by different consumer groups within a period of time based on statistical data; S12: Calculate the total amount of express packaging waste based on the number of packages received, the number of returned packages, and the number of returned packages using secondary packaging by different consumer groups within a period of time; S13: Research locations based on different consumer groups over a period of time i、 Courier company delivery and receiving outlets j Types of express packaging materials x Corresponding specifications y The number of express packaging materials produced by different consumer groups over a period of time is calculated by taking into account the total amount of express packaging materials produced at the corresponding time and place. S14: Calculate the per capita waste generation of express packaging waste by different consumer groups over a period of time; S15: Calculate the total generation of express packaging waste from different consumer groups.

3. The method for calculating carbon emissions from express packaging waste life cycle for different consumer groups according to claim 2 is characterized by: In the step S14, the specific steps are: S141: Calculate the per capita waste generation of express packaging waste according to the weight of different types of packaging waste generated by different consumer groups within a period of time, the total amount of packages of express packaging waste obtained in step S12, and the ratio of express packaging materials generated by different consumer groups within a period of time obtained in step S13; S142: Calculate the per capita waste amount of tape consumed by different consumer groups for express packaging waste over a period of time based on the weight of tape per unit area, the average area of ​​the corresponding dimension of the specification corresponding to the type of express packaging waste, the tape consumption rate per unit area of ​​express packaging waste of the corresponding type and specification, and the total number of packages of express packaging waste; S143: Based on the per capita waste generation of express packaging waste obtained in step S141 and the per capita waste generation of adhesive tape consumed by different consumer groups for express packaging waste in a period of time obtained in step S142, calculate the per capita waste generation of express packaging waste by different consumer groups in a period of time.

4. The method for calculating carbon emissions from express packaging waste life cycle for different consumer groups according to claim 3 is characterized by: In the step S15, the specific steps are: The total amount of express packaging waste for different consumer groups is calculated based on the per capita waste generation of express packaging waste by different consumer groups over a period of time obtained in S143, the number of time periods and the total number of consumer groups.

5. The method for calculating carbon emissions from express packaging waste life cycle for different consumer groups according to claim 1 is characterized by: In the step S2, the specific steps are: S21: Calculate the carbon emissions of express packaging waste in the upstream stage; the upstream stage includes the raw material stage and the production and manufacturing stage; S22: Calculate the carbon emissions of express packaging waste in the midstream stage; the midstream stage is the transportation stage; S23: Calculate the carbon emissions in the downstream stage of express packaging waste; the downstream stage includes the waste transportation stage and the treatment and disposal stage.

6. The method for calculating carbon emissions from express packaging waste life cycle for different consumer groups according to claim 5 is characterized by: In the step S21, the specific steps are: S211: Calculate the carbon emissions of express packaging at the raw material stage according to the total amount of express packaging waste of different consumer groups obtained in step S15 and the carbon emission factor of the corresponding express packaging material type at a certain material stage; S212: Calculate the carbon emissions of express packaging in the production and manufacturing stage based on the total amount of express packaging waste of different consumer groups and the carbon emission factors of corresponding express packaging material types in the production and manufacturing stage obtained in step S15.

7. The method for calculating carbon emissions from express packaging waste life cycle for different consumer groups according to claim 5 is characterized by: In the step S22, the specific steps are: Based on the total amount of express packaging waste of different consumer groups obtained in step S15, the proportion and transportation distance of the corresponding transportation mode in the corresponding transportation stage, and the carbon emission factors of the energy types corresponding to different transportation modes, the carbon emissions generated by the express packaging materials consumed by different consumer groups in the package transportation stage are calculated.

8. The method for calculating carbon emissions from express packaging waste life cycle for different consumer groups according to claim 5 is characterized by: In the step S23, the specific steps are: S231: Calculate the carbon emissions of express packaging waste in the transportation stage according to the total amount of express packaging waste of different consumer groups, the proportion of different treatment and disposal methods, the transportation distance of different treatment and disposal methods in the waste transportation stage, and the carbon emission factor in the waste transportation stage obtained in step S15; S232: Calculate the carbon emissions of express packaging waste in the treatment and disposal stage based on the total amount of express packaging waste of different consumer groups, the proportion of treatment and disposal methods of different types of packaging waste, and the carbon emission factors of treatment and disposal methods of different types of waste obtained in step S15.

9. The method for calculating carbon emissions from express packaging waste life cycle for different consumer groups according to claim 4 or 7, characterized in that: In the step S3, the specific steps are: S31: Calculate the carbon emissions of the entire life cycle based on the carbon emissions of express packaging waste in the upstream, midstream and downstream stages; S32: Calculate the carbon reduction in the entire life cycle based on the carbon emissions generated by the express packaging materials consumed by different consumer groups during the package transportation stage and the proportion of source reduction obtained in step S22, as well as the total amount of express packaging waste for different consumer groups, the carbon emission factors of the treatment and disposal methods of different types of waste and the proportion of changes in different treatment or disposal methods at the end obtained in step S15.

10. The carbon accounting system for the life cycle of express packaging waste for different consumer groups is characterized by: The waste generation calculation submodule is used to calculate the waste generation of express packaging of different consumer groups based on the per capita waste generation per unit time; The carbon emission calculation submodule is used to calculate the carbon emissions of express packaging waste in the entire life cycle according to the output and carbon emission factor of express packaging waste in each stage; The carbon emission reduction calculation submodule is used to calculate the carbon emission reduction of express packaging waste during the entire life cycle.

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