A method for calculating carbon emission reduction of low-value recyclable waste classification of household community life garbage

Abstract

The application discloses a kind of resident community life garbage low-value recyclable waste classification carbon emission reduction calculation method, belong to carbon emission reduction technical field, this method includes the following steps: low-value recyclable waste is handled to obtain the carbon emission of baseline scenario under baseline scenario;Low-value recyclable waste is handled to obtain the carbon emission of project scenario under project scenario;Based on the carbon emission under baseline scenario and the carbon emission under project scenario, obtain the carbon emission reduction of resident community low-value recyclable waste classification project.The method can evaluate the carbon emission reduction of resident life garbage community low-value recyclable waste classification, and provide guidance for promoting life garbage fine classification.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of carbon emission reduction, and particularly relates to a carbon emission reduction calculation method for low-value recyclable waste classification of residential community household garbage. BACKGROUND

[0002] The low-value recyclable waste classification of residential community household garbage is a behavior dominated by ecological and social benefits. Through the scaled and intensive processing of low-value recyclable waste classification, the government can be further assisted to promote the remodeling of the low-value recyclable waste classification and recycling and resource utilization system, to help improve the reduction and resource utilization of urban household garbage, and to guide the public to establish a low-carbon consciousness, which has obvious social benefits. However, there is still a lack of carbon emission reduction capacity quantification method for low-value recyclable waste classification behavior, and the carbon emission reduction capacity of low-value recyclable waste classification of residential community cannot be objectively, accurately and comprehensively evaluated. SUMMARY

[0003] To solve the above technical problems, the application provides a carbon emission reduction calculation method for low-value recyclable waste classification of residential community household garbage to solve the problems existing in the prior art.

[0004] To achieve the above purpose, the application provides a carbon emission reduction calculation method for low-value recyclable waste classification of residential community household garbage, which comprises the following steps:

[0005] The low-value recyclable waste is processed according to a baseline scenario to obtain the carbon emission amount in the baseline scenario;

[0006] The low-value recyclable waste is processed according to a project scenario to obtain the carbon emission amount in the project scenario;

[0007] The carbon emission reduction amount of the low-value recyclable waste classification project of the residential community is obtained based on the carbon emission amount in the baseline scenario and the carbon emission amount in the project scenario.

[0008] Optionally, the processing mode of the baseline scenario comprises landfill treatment and incineration treatment.

[0009] The carbon emission amount calculation formula based on the baseline scenario is:

[0010]

[0011] The carbon emission amount in the baseline scenario for the yth year is tCO2; E LF,y The carbon emission amount of the low-value recyclable waste based on the landfill treatment for the yth year is tCO2; E INC,y The carbon emission amount of the low-value recyclable waste based on the incineration treatment for the yth year is tCO2.

[0012] Optionally, the carbon emission calculation formula of landfill treatment is:

[0013]

[0014] In the formula, is the carbon emission of landfill methane leakage in the low-value recyclables participating in landfill in the yth year, with the unit of tCO2; E LF,IN,y is the carbon emission of external input of substances and energy in the low-value recyclables participating in landfill treatment in the yth year, with the unit of tCO2; E LF,FL,y is the carbon emission of landfill flare combustion in the low-value recyclables participating in landfill in the yth year, with the unit of tCO2; E LF,WW,y is the carbon emission of landfill leachate treatment in the low-value recyclables participating in landfill in the yth year, with the unit of tCO2; E LF,EC,y is the carbon emission reduction of landfill gas power generation replacing power grid power generation in the low-value recyclables participating in landfill in the yth year, with the unit of tCO2; E LF,HS,y is the carbon emission reduction of landfill heat supply replacing heat supply network heat generation in the low-value recyclables participating in landfill in the yth year, with the unit of tCO2.

[0015] Optionally, the carbon emission calculation formula of landfill methane leakage in landfill treatment is:

[0016]

[0017] The carbon emission calculation formula of external input of substances and energy in landfill treatment is:

[0018] E LF,IN,y = M LF,IN,y × EF LF,IN

[0019] The carbon emission calculation formula of landfill flare combustion in landfill treatment is:

[0020]

[0021] The carbon emission calculation formula of leachate treatment in landfill treatment is:

[0022]

[0023] In the formula, W LF,y is the mass of the low-value recyclables participating in landfill treatment in the yth year, with the unit of t; L 0,y is the methane production potential of each type of landfill in the yth year; R y is the methane recovery amount in the yth year; OX is the oxidation factor; is the global warming potential of methane; M LF,IN,yThe amount of material input to the landfill in the yth year; EF LF,IN The emission factor of the input material; V FL,LFG,y The amount of landfill gas input to the flare in the yth year, in m 3 ; F is the proportion of methane in landfill gas, in %; The density of methane, in kg / m 3 ; η FL The flare combustion efficiency; a LVR,y The proportion of the total amount of low-value recyclables in the yth year to the total amount of household waste treatment, in %; The amount of methane emissions; The amount of nitrous oxide emissions.

[0024] Alternatively, the carbon emission reduction amount calculation formula for landfill gas power generation in landfill treatment to replace power grid power generation is:

[0025] E LF,EC,y = EC LF,y × EF EC × a LVR,y

[0026] The carbon emission reduction amount calculation formula for landfill heat supply in landfill treatment to replace heat supply from the heat network is:

[0027] E LF,HS,y = HS LF,y × EF HS,y × a LVR,y

[0028] In the formula, EC LF,y is the amount of power supplied by the landfill to the power grid in the yth year, in MWh; EF EC is the power emission factor, in tCO2 / MWh; HS LF,y is the amount of heat supplied by the landfill to the heat network in the yth year, in GJ; EF HS is the heat emission factor, in tCO2 / GJ.

[0029] Alternatively, the carbon emission amount calculation formula for incineration treatment is:

[0030]

[0031] In the formula, is the amount of carbon dioxide emitted by fossil origin in the yth year of waste incineration process, in tCO2; E INC,WW,y is the carbon emission amount generated by organic wastewater treatment in the yth year of the incineration plant, in tCO2; E INC,FS,y is the carbon emission amount generated by fly ash treatment in the yth year, in tCO2; is the carbon emission of the methane and nitrous oxide in the waste incineration process in the yth year, with the unit of tCO2; E INC,IN,y is the carbon emission of the external input of substances and energy in the incineration process in the yth year, with the unit of tCO2; E INC,EC,y is the emission reduction of the low-value recyclables in the yth year by replacing the power grid with the waste incineration power generation, with the unit of tCO2; E INC,HS,y is the emission reduction of the low-value recyclables in the yth year by replacing the heat supply network with the waste incineration plant heat supply, with the unit of tCO2; E INC,BM,y is the emission reduction of the slag in the yth year by making building materials, with the unit of tCO2.

[0032] Optionally, the calculation formula of the fossil origin emission of carbon dioxide in the incineration process is:

[0033]

[0034] The calculation formula of the carbon emission of the organic waste water treatment in the waste incineration plant in the incineration process is:

[0035]

[0036] The calculation formula of the carbon emission of the fly ash treatment in the incineration process is:

[0037] E INC,FA,y = M INS,FA,y × EF INS,FA × 10 -3 × a LVR,y

[0038] The calculation formula of the methane and nitrous oxide emission in the incineration process is:

[0039]

[0040] The calculation formula of the carbon emission of the external input of substances and energy in the incineration process is:

[0041] E INC,IN,y = M INC,IN,y × EF INC,IN × a LVR,y

[0042] In the formula, W INC,i,y is the mass of component i in the low-value recyclables treated by the incineration process in the yth year, with the unit of t; dm i is the dry matter content of component i; C i is the total carbon content proportion of the dry matter of component i in the low-value recyclables treated by the incineration process, with the unit of %; F i is the mineral carbon proportion of the total carbon of the dry matter of component i in the low-value recyclables treated by the incineration process, with the unit of %; E is the incinerator incineration efficiency; Indicates methane emissions; Indicates nitrous oxide emissions; M INS,FA,y The amount of fly ash produced by incineration in year y is expressed in tons (t); EF INS,FA The carbon emission factor for fly ash treatment is expressed in kgCO2 / t; W LVR,INS,y The total mass of low-value recyclables incinerated in year y, in tons; The methane emission factor from waste incineration is expressed in tCH4 / t. The nitrogen oxide emission factor for waste incineration is expressed in tN2O / t; M INC,IN,y For the materials and energy input into the incinerator in year y; EF INC,IN The emission factor for the input substance.

[0043] Optionally, the formula for calculating the carbon emission reduction generated by incineration power generation replacing grid power generation is as follows:

[0044] E INC,EC,y =EC INC,y ×EF EC ×α LVR,y

[0045] The formula for calculating the carbon emission reduction when the heat supply from the incineration plant replaces the heating network in the incineration process is as follows:

[0046] E INC,HS,y =HS INC,y ×EF HS ×α LVR,y

[0047] The formula for calculating the carbon emission reduction from building materials made from slag during incineration is as follows:

[0048] E INC,BM,y =W INS,BM ×EF INS,BM ×10 -3 ×α LVR,y

[0049] In the formula, EC INC,y The electricity supplied by the municipal solid waste incineration plant to the grid in year y is expressed in MWh; HS INC,y The amount of heat supplied by the incinerator to the heating network in year y, expressed in GJ; W INS,BM The amount of ash produced by waste incineration furnaces, in tons (t); EF INS,BM The emission reduction factor for slag utilization is expressed in kgCO2 / t.

[0050] Optionally, the project scenario handling includes sorting and recycling of low-value recyclables and resource utilization of low-value recyclables;

[0051] The calculation formula of the carbon emission in the project scenario of the low-value recyclable material is obtained by performing project scenario processing on the low-value recyclable material.

[0052]

[0053] In the formula, E y is the carbon emission in the project scenario of the yth year, in tCO2; E sorting,y E y is the carbon emission in the project scenario of the yth year, in tCO2; E recycled,y E y is the carbon emission in the project scenario of the yth year, in tCO2.

[0054] Optionally, the calculation formula of the carbon emission reduction of the low-value recyclable material classification project of the residential community is obtained based on the carbon emission in the baseline scenario and the carbon emission in the project scenario.

[0055]

[0056] In the formula, ER y E y is the carbon emission in the project scenario of the yth year, in tCO2; E

[0057] Compared with the prior art, the present application has the following advantages and technical effects:

[0058] The present application obtains the carbon emission in the baseline scenario by performing baseline scenario processing on the low-value recyclable material, obtains the carbon emission in the project scenario by performing project scenario processing on the low-value recyclable material, and obtains the carbon emission reduction of the low-value recyclable material classification project of the residential community based on the carbon emission in the baseline scenario and the carbon emission in the project scenario. The method can evaluate the carbon emission reduction of the low-value recyclable material classification of the residential household garbage, and provides guidance for promoting the fine classification of household garbage.

[0059] The present application can quantify and evaluate the emission reduction effect of the low-value recyclable material classification, and provides a scientific basis for promoting the voluntary carbon emission reduction transaction of the low-value recyclable material classification project. DETAILED DESCRIPTION

[0060] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments of the application illustrated in the drawings and their description are presented and are included in the application to provide a thorough and enabling disclosure of the application, and are included in and constitute a part of this application. In the drawings:

[0061] Figure 1 The flow chart of the carbon emission reduction calculation method of the low-value recyclable material classification of the residential community household garbage according to the embodiment of the present application is shown in FIG. 1;

[0062] Figure 2 The landfill carbon emission accounting boundary according to the embodiment of the present application is shown in FIG. 2.

[0063] Figure 3 The incineration plant carbon emission accounting boundary of the embodiment of the present application. DETAILED DESCRIPTION

[0064] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0065] It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in an order different from that shown.

[0066] Embodiment one

[0067] As shown in the embodiment, a carbon emission reduction calculation method for low-value recyclable waste classification of residential community household garbage is provided, comprising the following steps: Figure 1 The low-value recyclable waste is subjected to baseline scenario processing to obtain the carbon emission amount under the baseline scenario, and is subjected to project scenario processing to obtain the carbon emission amount under the project scenario; and the carbon emission reduction amount of the low-value recyclable waste classification project of the residential community is obtained based on the carbon emission amount under the baseline scenario and the carbon emission amount under the project scenario.

[0068] The present application specifies an accounting method for the greenhouse gas emission reduction amount generated by the low-value recyclable waste classification behavior of household garbage. The accounting process and method for the greenhouse gas emission reduction amount generated by the low-value recyclable waste classification and accurate delivery behavior are focused.

[0069] The present application is applicable to the accounting of the carbon emission reduction amount generated by the low-value recyclable waste classification behavior of the residential community, and the specific application conditions include: (1) from the low-value recyclable waste classification of the residential community; (2) the amount of low-value recyclable waste generated by the residential community under the baseline scenario is included in the amount of other garbage generated by the residential community; (3) there are greenhouse gas recycling or utilization measures or facilities under the baseline scenario; (4) the carbon emission calculation is performed after the low-value recyclable waste is utilized and processed.

[0070]

[0071] ​The normative documents referred to in the process of calculating carbon emissions in the present application include: ISO 14064-1:2018 Greenhouse gases Part 1: Specification and guidance for quantification and reporting of greenhouse gas emission and removal at organization level; ISO 14064-2:2019 Greenhouse gases Part 2: Specification and guidance for quantification, monitoring and reporting of greenhouse gas emission reductions and removal increases at project level; IPCC Guidelines for National Greenhouse Gas Inventories, 2006; Guidelines for Provincial Greenhouse Gas Inventory (Trial); MRV model for greenhouse gas emission reduction of municipal solid waste management; CM-072-V01 Multi-choice waste disposal mode; CM-077-V01 Landfill gas project; CDM tool: Emission calculation tool for torch combustion; CMS-076-V01 Methane recovery in sewage treatment.

[0072] The definitions of relevant terms in the present embodiment include: low-value recyclable material classification: refers to a series of activities of classified putting, collecting, transporting and disposing of low-value recyclable materials according to the standard of Living Waste Classification Mark (GB / T 19095-2019) and the Xiamen City Living Waste Low-Value Recyclable Material Guidance Catalogue, so as to transform into public resources. Greenhouse gas emission: refers to the release of greenhouse gases into the atmosphere within a certain period of time. The types of greenhouse gases involved in the present methodology are carbon dioxide, methane and nitrous oxide. Baseline scenario: refers to the scenario of landfilling / incineration of low-value recyclable materials as other waste without low-value recyclable material classification. Baseline emission: refers to the emission of carbon dioxide occurring in the baseline scenario. Emission reduction: after the implementation of the project activity, the emission of each link after the classification and resource treatment of low-value recyclable materials by the residents' community is reduced compared to the case without the project activity, and the reduced emission is the emission reduction. Recyclable material: refers to living waste suitable for recycling according to the standard of Living Waste Classification Mark (GB / T 19095-2019), including paper, plastic, metal, glass, ceramic, textile, etc. Low-value recyclable material: refers to various waste that has recyclability from the perspective of the object itself, but requires high cost for recycling and utilization, resulting in poor economic efficiency, and is difficult to be effectively recycled by relying on market forces alone. According to the Xiamen City Living Waste Low-Value Recyclable Material Guidance Catalogue, it can be divided into waste glass, ceramic, waste plastic, waste paper and waste textile clothing. Other waste: refers to living waste other than recyclable materials, hazardous waste and kitchen waste according to the standard of Living Waste Classification Mark (GB / T 19095-2019). Community: refers to the jurisdictional scope of each community residents' committee under the jurisdiction of the urban street office, which is an important foundation of urban grassroots power, including residential areas, unit compound, community service agencies, etc.

[0073] The spatial scope of the accounting project in this embodiment includes: (1) residential communities; (2) facilities for storing low-value recyclables in residential communities; (3) small-scale low-value recyclable sorting and processing facilities that may exist in residential communities, such as small-scale sorting or sorting facilities; and (4) low-value recyclable recycling facilities in residential communities, including recycling stations, renewable resource utilization centers, etc.

[0074] Table 1 shows the different scenarios for the post-sorting treatment and disposal of low-value recyclables in this embodiment:

[0075] Table 1

[0076]

[0077] To ensure the scientific calculation of carbon emission reductions from low-value recyclable waste sorting in residential communities, this embodiment also includes pre-determined and monitored parameters and data. Pre-determined parameters include those using default values ​​or historical data. This methodology provides parameter data and their sources; the data values ​​of these parameters remain unchanged throughout the project monitoring years or are updated accordingly based on the specific data source for each parameter. Monitored parameters are those that require actual measurement using measuring equipment.

[0078] The carbon reduction calculation process in this embodiment includes:

[0079] 1. Baseline Emissions

[0080] The baseline scenario for the methodology of low-value recyclable waste sorting in residential communities is: before the implementation of low-value recyclable waste sorting, low-value recyclable waste was treated as other waste and incinerated or disposed of in sanitary landfill. The baseline emissions are calculated as follows:

[0081] BE CO2,y =E LF,y +E INC,y (1)

[0082] Among them, BE CO2,y Let tCO2 be the carbon emissions under the baseline scenario in year y; E LF,y The carbon emissions (tCO2) of low-value recyclables disposed of in landfill in year y; E INC,y tCO2 represents the carbon emissions from low-value recyclables processed by incineration in year y.

[0083] 1.1 Carbon emissions from landfill disposal (E) LF,y

[0084] like Figure 2 As shown, carbon emissions from landfill disposal under the baseline scenario mainly include direct carbon emissions from landfills, carbon emissions from leachate, and carbon emissions from the disposal of sanitary landfill by-products. According to the IPCC methodology, the carbon emissions from landfill disposal, E...LF,y The calculation is as follows:

[0085]

[0086] Wherein, Carbon emissions of landfill methane leakage in low-value recyclables participating in landfill in the yth year, tCO2; E LF,IN,y Carbon emissions of external input of matter and energy in the process of low-value recyclables participating in landfill treatment in the yth year, tCO2; E LF,FL,y Carbon emissions of landfill gas torch combustion in low-value recyclables participating in landfill in the yth year, tCO2; E LF,WW,y Carbon emissions of landfill leachate treatment of low-value recyclables participating in landfill in the yth year, tCO2; E LF,EC,y Carbon emissions of landfill gas power generation in low-value recyclables participating in landfill in the yth year, tCO2; E LF,HS,y Carbon emissions of landfill heat supply in low-value recyclables participating in landfill in the yth year, tCO2.

[0087] 1.1.1 Carbon emissions of landfill methane leakage

[0088]

[0089] W LF,y = W LVR,y × α LF,y (4)

[0090]

[0091] DOC y = ∑ i (DOC i,y × W i,y ) (6)

[0092] Wherein: Carbon emissions of landfill methane leakage in low-value recyclables participating in landfill in the yth year, tCO2; W LF,y Mass of low-value recyclables participating in landfill treatment in the yth year, t; L 0,y Methane production potential of each type of landfill in the yth year; R y Methane recovery in the yth year, wherein, R y The data source of R is the project participant; OX is the oxidation factor, wherein, the data value of OX is 0.1 according to IPCC; Global warming potential of methane; W LVR,yW LVR,y is the quality of low-value recyclables in the yth year, in tons (t), wherein, W LF,y y is the proportion of the total amount of low-value recyclables treated by landfill in the yth year, (%), which can be calculated by referring to the data in the Xiamen City Solid Waste Pollution Environment Prevention Information Bulletin. The proportion of the total amount of household garbage treated by landfill in the yth year, (%), can be calculated by referring to the data in the Xiamen City Solid Waste Pollution Environment Prevention Information Bulletin. If the data for the current year is not available, the latest available data can be used for calculation; MCF is the methane correction factor, wherein the data of MCF is from IPCC, and the specific data value is shown in Table 2; DOC F,y is the fraction of degradable organic carbon in landfill garbage in the yth year; DOC F,y is the proportion of DOC actually decomposed in landfill garbage in the yth year, (%), wherein the data of DOC i,y is from IPCC, and the data value is 0.5-0.6; DOC i,y is the proportion of degradable organic carbon in the ith waste in the yth year, (%), wherein the data of DOC i,y is from IPCC and literature research, and the specific data value is shown in Table 3; F is the proportion of methane in landfill gas, (%), wherein the data of F is from IPCC, and the data value is 0.4-0.6; W i,y is the proportion of the ith waste in the yth year, (%), wherein the data of W LF,IN,y is from the project participants; 16 / 12 refers to the ratio of methane to carbon molecular weight.

[0093] Table 2

[0094] Type of landfill Default value of methane correction factor (MCF) Managed: A 1.0 Unmanaged - deep (>5m waste): B 0.8 Unmanaged - shallow (<5m waste): C 0.4 Unclassified: D 0.4

[0095] Table 3

[0096]

[0097] 1.1.2 Carbon emissions generated by external input of substances and energy in the landfill treatment process E LF,IN,y

[0098] The indirect emissions generated by the input of substances and energy in the landfill process of low-value recyclables are calculated as follows:

[0099] E LF,IN,y = M LF,IN × EF LF,IN,y (7)

[0100] wherein: M LF,IN,y is the input of substances and energy in the yth year, wherein the data of M LF,IN ​The emission factor of input substance (energy) is from literature research.

[0101] 1.1.3 Carbon emissions from landfill gas flaring E LF,FL,y

[0102] The emissions from landfill gas flaring are calculated as follows:

[0103]

[0104] Where: V FL,LFG,y is the amount of landfill gas flared by the landfill in year y, m 3 ; data from project participants; is the density of methane, kg / m 3 , data value is 0.67; η FL is the flaring efficiency, data from IPCC, data values are shown in Table 4; a LVR,y is the proportion of total amount of low-value recyclables in total amount of household waste treated in year y (%), data from project participants.

[0105] Table 4

[0106] Type of flare Combustion efficiency Closed flare 0.9 Open flare 0.5

[0107] 1.1.4 Carbon emissions from landfill leachate treatment E LF,WW,y

[0108] The emissions from landfill leachate treatment (E LF,WW,y ) include methane emissions and nitrous oxide emissions . The calculation process is shown as follows:

[0109]

[0110] The methane emissions are calculated as follows:

[0111]

[0112] The nitrous oxide emissions are calculated as follows:

[0113]

[0114] Where: T LF is the total amount of organic matter (in terms of COD), t, data from project participants; B0 is the maximum methane production capacity, tCH4 / tCOD, data from IPCC, data value is 0.25; M is the methane correction factor, data from IPCC, data value is 0.165; is the global warming potential of methane, data from IPCC, data value is 21; QLF,y Landfill waste treatment capacity in year y, m 3 Data source: project participants; N LF,in Influent total nitrogen concentration, mg / L, data source: project participants; N LF,out Effluent total nitrogen concentration, mg / L, data source: project participants; Nitrous oxide emission factor, tN2O / tN, data source: IPCC, data value 0.035; Global warming potential of nitrous oxide, data source: IPCC, data value 310.

[0115] 1.1.5 Carbon emission reduction amount E generated by landfill gas power generation replacing grid power generation LF,EC,y

[0116] Collect the emission reduction amount generated by landfill gas power generation replacing grid power generation for calculation:

[0117] E LF,EC,y = EC LF,y × EF EC × α LVR,y (12)

[0118] Wherein: EC LF,y Landfill power supply to the grid in year y, MWh, data source: project participants; EF EC Power emission factor, tCO2 / MWh, data source: Provincial Greenhouse Gas Inventory Compilation Guide, specific data value as shown in Table 5.

[0119] Table 5

[0120]

[0121] 1.1.6 Carbon emission reduction amount E generated by landfill heat supply replacing heat supply of heat network LF,HS,y

[0122] Collect the emission reduction amount generated by landfill heat replacing heat of heat network for calculation:

[0123] E LF,HS,y = HS LF,y × EF HS × α LVR,y (13)

[0124] Wherein: HS LF,y Landfill heat supply to the heat network in year y, GJ, data source: project participants; EF HS Heat emission factor, tCO2 / GJ, data source: IPCC and literature review, data value 0.11.

[0125] 1.2 Carbon emissions from incineration (E) INC,y

[0126] like Figure 3 As shown, carbon emissions treated by incineration under the baseline scenario mainly include direct carbon emissions from the incineration plant, carbon emissions from the disposal of incineration byproducts such as fly ash, slag, and leachate, and carbon reductions from power generation or heat supply by the incineration plant. According to the IPCC methodology, the carbon emissions treated by incineration, E... INC,y The calculation is as follows:

[0127]

[0128] in: For the fossil-derived carbon dioxide emissions during the waste incineration process in year y, tCO2; E INC,WW,y For the carbon emissions (tCO2) generated from the treatment of organic wastewater at the incineration plant in year y; E INC,FA,y The carbon emissions generated from fly ash treatment in year y are tCO2; For methane and nitrous oxide emissions during waste incineration in year y, tCO2; E INC,IN,y tCO2 represents the carbon emissions (tCO2) generated from externally input materials and energy during the incineration process in year y. INC,EC,y For year y, the emission reduction tCO2; E is generated by replacing grid power generation with waste-to-energy incineration of low-value recyclables. INC,HS,y For the emissions avoided in year y by replacing the heating network with heat supplied by the waste incineration plant, tCO2; E INC,BM,y The emission reduction tCO2 is generated in year y from the use of slag to produce building materials.

[0129] 1.2.1 Carbon dioxide emissions (E) from fossil origins during waste incineration INC,CO2,y

[0130] The carbon emissions from incineration are calculated according to the method given by the IPCC, as follows:

[0131]

[0132] W INC,i,y =W LVR,i,y ×α INC,y (16)

[0133] Among them: W INC,i,y Let t represent the mass of component i in the low-value recyclables in year y that are incinerated; W LVR,i,y Let t be the mass of component i in low-value recyclables in year y, and the data source be project participants; α INC,yTo calculate the percentage of low-value recyclables treated by incineration out of the total low-value recyclables, you can refer to the data in the "Xiamen Municipal Solid Waste Pollution Prevention and Control Information Bulletin" to determine the percentage of municipal solid waste treated by incineration out of the total municipal solid waste treated. If the data for the current year is unavailable, the latest available data can be used for calculation. i The dry matter content of component i (calculated from the moisture content of component i) is given by data from IPCC and literature review, and the data values ​​are shown in Table 6; C i The percentage of total dry matter carbon content (%) of component i in low-value recyclables treated by incineration is given. Data sources are from the IPCC and literature review, and the data values ​​are shown in Table 6. i The percentage of mineral carbon in the total dry matter carbon of component i in low-value recyclables treated by incineration is %, with data sourced from IPCC and literature review, and the data values ​​are shown in Table 6; E is the incinerator incineration efficiency, with data sourced from literature review, and the value is 95%; 44 / 12 is the conversion coefficient of carbon to carbon dioxide.

[0134] Table 6

[0135]

[0136] 1.2.2 Carbon emissions E from organic wastewater treatment at incineration plants INC,WW,y

[0137] Incineration plant leachate treatment and discharge (E INC,WW,y Including methane emissions and nitrous oxide emissions Two parts. The calculation process is as follows:

[0138]

[0139] Methane emissions are calculated using the following formula:

[0140]

[0141] Nitrous oxide emissions calculation:

[0142]

[0143] Wherein: T INC Total organic matter (in COD), t, data source: project participants; Q INC,y For the wastewater volume of the incinerator in year y, m 3 The data source is the project participants; N INC,in The total nitrogen concentration in the influent is mg / L; data source: project participants. INC,out The total nitrogen concentration in the effluent is expressed in mg / L, and the data is sourced from project participants.

[0144] 1.2.3 Carbon emissions E from fly ash treatment INC,FA,y

[0145] The carbon emissions from fly ash treatment are calculated as follows:

[0146] E INC,FA,y =M INS,FA,y ×EF INS,FA ×10 -3 ×α LVR,y (20)

[0147] Where: M INS,FA,y The amount of fly ash generated by incineration in year y, in tons, is provided by project participants; EF INS,FA The value is the carbon emission factor for fly ash treatment, kgCO2 / t, data source: IPCC, value: 42.8.

[0148] 1.2.4 Methane and nitrous oxide emissions during incineration

[0149] The emissions of methane and nitrous oxide during incineration are calculated as follows:

[0150]

[0151] in:

[0152] W LVR,INS,y The total mass of low-value recyclables incinerated in year y, in tons, is the data source of the project participants. The methane emission factor for waste incineration is tCH4 / t, data source: IPCC, value: 2.42 × 10⁻⁶. -7 ; The nitrous oxide emission factor from waste incineration is tN2O / t, data source: IPCC, value: 6.05 × 10⁻⁶. -5 .

[0153] 1.2.5 Carbon emissions E generated from externally input materials and energy during incineration INC,IN,y

[0154] The indirect emissions generated by the material and energy inputs during incineration are calculated as follows:

[0155] E INC,IN,y =M INC,IN,y ×EF INC,IN ×α LVR,y (twenty two)

[0156] Where: M INC,IN,y The data represents the materials and energy input to the incinerator in year y, sourced from project participants; EF INC,INThe emission factors of the input material (energy) are based on literature review, and the data values ​​are shown in Table 7.

[0157] Table 7

[0158] Recyclable species Carbon emission factor Diesel 3.25 tCO2 / t NaOH 1.1 tCO2 / t Electricity See Table 5

[0159] 1.2.6 Emission reductions E from replacing grid-connected power generation with incineration power generation INC,EC,y

[0160] The emission reductions resulting from municipal solid waste incineration power generation replacing grid power generation are calculated as follows:

[0161] E INC,EC,y =EC INC,y ×EF EC ×α LVR,y (twenty three)

[0162] Among them: EC INC,y The figure represents the electricity supplied by the municipal solid waste incineration plant to the grid in year y, in MWh. The data source is the project participants.

[0163] 1.2.7 Emission reduction E from replacing heating network heating with incineration plant heat supply INC,HS,y

[0164] Calculation of emission reductions from heat supply replacement of municipal solid waste incineration plants using alternative heating networks:

[0165] E INC,HS,y =HS INC,y ×EF HS ×α LVR,y (twenty four)

[0166] Among them: HS INC,y GJ represents the heat supplied by the incinerator to the heating network in year y, with data sourced from project participants.

[0167] 1.2.8 Emission reduction E generated from the use of slag to produce building materials INC,BM,y

[0168] Emission reductions from using slag to produce building materials:

[0169] E INC,BM,y =W INS,BM ×EF INS,BM ×10 -3 ×α LVR,y (25)

[0170] Among them: W INS,BM The figure represents the amount of waste incineration ash produced, in tons (t). Data source: Project participants; EF INS,BM The emission reduction factor for slag utilization is kgCO2 / t, and the data source is a literature review, with a value of 65.58.

[0171] 2. Project emissions

[0172] The baseline emission scenario for the methodology of low-value recyclable waste sorting in residential communities is as follows: after implementing low-value recyclable waste sorting, the low-value recyclable waste will be utilized as a resource, and the carbon emissions generated during the sorting and recycling process will be considered. The project emission calculation formula is as follows (26):

[0173]

[0174] in: Let tCO2 be the carbon emissions under the project scenario in year y; E sorting,y Let tCO2 be the carbon emissions from the sorting and recovery of low-value recyclables under the project scenario in year y. recycled,y tCO2 represents the carbon emissions generated from the utilization of low-value recyclable resources under the project scenario in year y.

[0175] 2.1 Carbon emissions E from sorting and recycling low-value recyclables sorting,y

[0176] Low-value recyclables possess some recycling value, but their added value is low, making them difficult to process through market mechanisms. Large-scale, automated recycling and sorting processes are needed to increase their value and achieve sustainable recycling. After recycling, sorting, and screening, low-value recyclables are considered to have direct recyclable properties. The sorting process involves energy and material consumption; therefore, the carbon emissions from sorting and recycling are calculated as follows:

[0177] E sorting,y =LVR E,y ×EF EC +LVR M,y ×EF M (27)

[0178] Among them: LVR E,y LVR represents the energy consumption for sorting low-value recyclables in year y, in MWh, with data sourced from project participants. M,y Let t be the amount of material consumed in the sorting of low-value recyclables in year y; EF M tCO2 / t represents the carbon emission factor due to energy and material consumption during the sorting process.

[0179] 2.2 Carbon emission reduction E from the resource utilization of low-value recyclables i,recycled,y

[0180] According to the "Xiamen Special Economic Zone Domestic Waste Classification Management Measures" and the "Xiamen Municipal Domestic Waste Low Value Recyclable Material Guidance Catalog", the objects for calculating the carbon emission reduction of low value recyclable materials can be divided into five categories: waste glass, ceramics, waste plastics, waste paper and waste textiles and clothing. Therefore, the low value recyclable materials included in this standard are five categories.

[0181] Therefore, the carbon emission reduction from the recycling of low-value recyclables is calculated based on the carbon emission factor of the recycled products after sorting and screening. This factor represents the carbon emissions generated throughout the entire production and processing process, including extraction, refining, processing, transportation, and manufacturing, revealing the product's carbon emission lifecycle. The specific calculation process is shown below:

[0182] E i,recycled,y =W i,.collected,y ×EF i,recycled (28)

[0183] Among them: W i,.collected,y Let t represent the mass of low-value recyclables i in year y, with data sourced from project participants. EF i,recycled The carbon emission reduction factor of i in low-value recyclables is tCO2 / t. The data sources are IPCC and literature review, and the data values ​​are shown in Table 8.

[0184] Table 8

[0185] Recyclable species Carbon emission reduction factor (tCO2 / t) Paper 0.53 Plastic 1.82 Textile 3.66 Glass 0.32 Ceramic 0.85 Metal 3.58

[0186] 3. Project emission reductions

[0187] The carbon emission reduction from sorting low-value recyclables in residential communities is calculated as follows:

[0188]

[0189] Among them: ER y The carbon emission reduction tCO2 is the amount of low-value recyclable waste sorting project carried out in residential communities in year y. tCO2 represents the carbon emissions under the baseline scenario of low-value recyclable waste classification in residential communities in year y. tCO2 represents the carbon emissions under the scenario of the low-value recyclable waste sorting project in residential communities in year y.

[0190] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for calculating carbon emission reduction from the classification of low-value recyclable materials in residential waste, characterized in that, include: The carbon emissions under the baseline scenario are obtained by applying baseline scenario treatment to low-value recyclables. The carbon emissions under the project scenario are obtained by processing the low-value recyclables. The carbon emission reduction of the low-value recyclable waste sorting project in the residential community is obtained based on the carbon emission under the baseline scenario and the carbon emission under the project scenario. The baseline scenario can be handled through landfilling or incineration. The carbon emission calculation formula based on the baseline scenario is as follows: ； represents the carbon emissions under the baseline scenario in year y, expressed in tCO2. For year y, the carbon emissions of low-value recyclables disposed of in landfills are expressed in tCO2. For year y, the carbon emissions of low-value recyclables based on incineration are expressed in tCO2. The formula for calculating the carbon emissions from landfill treatment is as follows: ； In the formula, The carbon emissions from landfill methane leaks in low-value recyclables that are landfilled in year y are expressed in tCO2. The carbon emissions generated by externally input materials and energy during the landfill disposal of low-value recyclables in year y, expressed in tCO2. The carbon emissions generated by the flare combustion of low-value recyclables in landfills in year y are expressed in tCO2. The carbon emissions generated from the treatment of landfill leachate from low-value recyclables that are landfilled in year y, expressed in tCO2. The carbon emission reduction generated by replacing grid power generation with landfill gas collected from low-value recyclables in landfill in year y is expressed in tCO2. The carbon emission reduction generated by the replacement heating network for landfill heat supply in the low-value recyclables that participate in landfilling in year y is expressed in tCO2. The formula for calculating the carbon emissions from the incineration process is as follows: ； In the formula, The carbon dioxide emissions from fossil-derived sources during waste incineration in year y are expressed in tons of CO2 (tCO2). The carbon emissions generated from the treatment of organic wastewater at the incineration plant in year y are expressed in tons of CO2. The carbon emissions generated from fly ash treatment in year y are expressed in tCO2. The values ​​represent methane and nitrous oxide emissions during waste incineration in year y, expressed in tons of CO2 (tCO2). The carbon emissions generated by externally input materials and energy during the incineration process in year y are expressed in tCO2. The emission reduction in year y is the amount of low-value recyclables generated by replacing grid power generation with waste-to-energy incineration, expressed in tCO2. The emission amount avoided in year y by using heat supply from waste incineration plants to replace heating networks for low-value recyclables, expressed in tCO2. The emission reduction generated by using slag to produce building materials in year y is expressed in tCO2. Project scenario handling includes sorting and recycling of low-value recyclables and resource utilization of low-value recyclables; The formula for calculating carbon emissions under a project scenario by processing the low-value recyclables is as follows: ； In the formula, For the project scenario in year y, the carbon emissions are expressed in tCO2. The carbon emissions from sorting and recovering low-value recyclables under the project scenario in year y are expressed in tCO2. The carbon emissions generated from the utilization of low-value recyclable resources under the project scenario in year y are expressed in tCO2. The formula for calculating the carbon emission reduction of the residential community low-value recyclable waste sorting project, based on the carbon emissions under the baseline scenario and the carbon emissions under the project scenario, is as follows: ； In the formula, The carbon emission reduction for the residential community low-value recyclable waste sorting project in year y is expressed in tCO2.

2. The method for calculating carbon emission reduction by classifying low-value recyclable materials of household waste in residential communities according to claim 1, characterized in that, The formula for calculating carbon emissions from methane leaks at landfills during landfill disposal is as follows: ； The formula for calculating carbon emissions from externally input materials and energy during landfill disposal is as follows: ； The formula for calculating carbon emissions from landfill flare combustion during landfill disposal is as follows: ； The formula for calculating carbon emissions from leachate treatment in landfill disposal is as follows: ； In the formula, The mass of low-value recyclables disposed of in landfill in year y, in tons; Methane generation potential for various types of landfills under different management systems in year y; y represents the methane recovery rate in year y; OX represents the oxidation factor. The global warming potential of methane; The material input into the landfill in year y; The emission factor for the input substance; This represents the volume of landfill gas fed into the landfill flare in year y, in cubic meters (m³). 3 F represents the proportion of methane in landfill gas, expressed as a percentage (%). The density of methane is expressed in kg / m³. 3 ; For torch combustion efficiency; The percentage of low-value recyclables in year y to the total amount of municipal solid waste treated, expressed in % %. Indicates methane emissions; This indicates the amount of nitrous oxide emissions.

3. The method for calculating carbon emission reduction by classifying low-value recyclable materials of household waste in residential communities according to claim 2, characterized in that, The formula for calculating the carbon emission reduction from landfill gas power generation replacing grid power generation in landfill disposal is as follows: ； The formula for calculating the carbon emission reduction generated by replacing the heating network with landfill heat supply in landfill disposal is as follows: ； In the formula, The amount of electricity supplied from the landfill to the power grid in year y is expressed in MWh. The figure represents the electricity emission factor, expressed in tCO2 / MWh. The heat supplied from the municipal solid waste landfill to the heating network in year y is expressed in GJ. Thermal emission factor, measured in tCO2 / GJ.

4. The method for calculating carbon emission reduction by classifying low-value recyclable materials of household waste in residential communities according to claim 1, characterized in that, The formula for calculating carbon dioxide emissions from fossil-derived fossil fuels during incineration is as follows: ； The formula for calculating carbon emissions from the treatment of organic wastewater in incineration plants is as follows: ； The formula for calculating carbon emissions from fly ash treatment during incineration is as follows: ； The formulas for calculating methane and nitrous oxide emissions during incineration are as follows: ； The formula for calculating carbon emissions from externally input materials and energy during incineration is as follows: ； In the formula, The mass of component i in the low-value recyclables treated by incineration in year y is expressed in tons. The dry matter content of component i; The percentage of total carbon content in dry matter of component i in low-value recyclables treated by incineration, expressed as % The percentage of mineral carbon in the total dry matter carbon of component i in low-value recyclables treated by incineration, expressed as % . E represents the incinerator's combustion efficiency; Indicates methane emissions; Indicates nitrous oxide emissions; The amount of fly ash produced by incineration in year y is expressed in tons. The carbon emission factor for fly ash treatment is expressed in kgCO2 / t. The total mass of low-value recyclables incinerated in year y, in tons; The methane emission factor from waste incineration is expressed in tCH4 / t. The nitrous oxide emission factor from waste incineration is expressed in tN2O / t; The materials and energy input into the incineration plant in year y; The emission factor for the input substance.

5. The method for calculating carbon emission reduction by classifying low-value recyclable materials of household waste in residential communities according to claim 4, characterized in that, The formula for calculating the carbon emission reduction from incineration power generation replacing grid power generation is as follows: ； The formula for calculating the carbon emission reduction when the heat supply from the incineration plant replaces the heating network in the incineration process is as follows: ； The formula for calculating the carbon emission reduction from building materials made from slag during incineration is as follows: ； In the formula, The electricity supplied by the municipal solid waste incineration plant to the grid in year y is expressed in MWh. The heat supplied by the incinerator to the heating network in year y is expressed in GJ. The amount of ash produced by waste incineration furnaces is expressed in tons (t). The emission reduction factor for slag utilization is expressed in kgCO2 / t.

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