Optimization method of domestic waste treatment system considering the influence of waste components

Abstract

The present invention provides a method for optimizing a domestic waste treatment system considering the influence of waste components, and relates to the technical field of waste treatment. The method comprises: obtaining an initial component vector of domestic waste in a target area, determining an incineration waste component vector based on the initial component vector of domestic waste and a first influencing factor, wherein the first influencing factor reflects the situation of waste classification in the domestic waste treatment system; determining the unit greenhouse gas generation and unit electric energy recovery of incineration waste based on the incineration waste component vector, and updating the life cycle inventory of domestic waste treatment; obtaining the environmental impact value and economic impact value of each process in the life cycle of domestic waste based on the updated life cycle inventory and waste treatment influencing factor; determining key influencing factors based on the environmental impact value and the economic impact value, and generating optimization suggestions for the domestic waste treatment system based on the key influencing factors. The present invention can improve the accuracy of the optimization results of the domestic waste treatment system.

Description

Technical Field

[0001] The present invention relates to the technical field of garbage disposal, and in particular to a method for optimizing a domestic garbage disposal system taking into account the influence of garbage components. Background Art

[0002] With the advancement of urbanization and industrialization, the amount of domestic waste is increasing. How to effectively deal with this domestic waste is one of the key challenges for sustainable urban development. Common methods of domestic waste treatment include landfill, incineration and composting.

[0003] In the evaluation and optimization process of existing domestic waste treatment system solutions, it is usually assumed that the composition of waste entering different treatment processes remains constant. However, in the actual waste distribution and treatment process, the waste composition will change due to various factors. Although assuming that the waste composition is constant simplifies the model analysis, it ignores the dynamic changes of waste composition in actual operation, resulting in the evaluation results of the existing domestic waste treatment system not being able to truly reflect the actual state of the waste treatment system, and thus making the optimization results of the domestic waste treatment system low in accuracy. Summary of the invention

[0004] The present invention provides a method for optimizing a domestic waste treatment system taking into account the influence of waste components, so as to solve the defect of low accuracy of optimization results of the domestic waste treatment system in the prior art and improve the accuracy of the optimization results of the domestic waste treatment system.

[0005] The present invention provides a method for optimizing a domestic waste treatment system taking into account the influence of waste components, the method comprising:

[0006] Obtaining an initial component vector of domestic waste in a target area, wherein the initial component vector of domestic waste includes the proportion of each component, and determining an incineration waste component vector based on the initial component vector of domestic waste and a first influencing factor among waste treatment influencing factors in a domestic waste treatment system, wherein the first influencing factor reflects the waste classification situation in the domestic waste treatment system;

[0007] Determine the unit greenhouse gas generation and unit electric energy recovery of the incineration treatment of the garbage based on the incineration garbage component vector, and update the life cycle inventory of domestic garbage treatment based on the unit greenhouse gas generation and unit electric energy recovery of the incineration treatment of the garbage;

[0008] Based on the updated life cycle inventory and the waste treatment impact factor, the environmental impact value and the economic impact value of each process in the life cycle of domestic waste are obtained, wherein the environmental impact value reflects the environmental impact generated by the domestic waste treatment process, and the economic impact value reflects the economic impact generated by the domestic waste treatment process;

[0009] Based on the environmental impact value and the economic impact value, key impact factors are determined in the waste treatment impact factors, and optimization suggestions for the domestic waste treatment system are generated based on the key impact factors.

[0010] According to a method for optimizing a domestic waste treatment system taking into account the influence of waste components provided by the present invention, the first influencing factors include the amount of domestic waste generated, the amount of recyclable waste, the amount of food waste, the amount of other waste, and the proportion of anaerobic digestion treatment of food waste.

[0011] According to a method for optimizing a domestic waste treatment system taking into account the influence of waste components provided by the present invention, the unit greenhouse gas generation and unit electric energy recovery of the incinerated waste are determined based on the incinerated waste component vector, including:

[0012] Determining the carbon content and lower heating value of the incinerated garbage according to the incinerated garbage component vector and the preset characteristic values ​​of each component, wherein the characteristic values ​​of the components include carbon content, fossil carbon content and moisture content;

[0013] Based on the carbon content and lower heating value of the incinerated garbage, the unit greenhouse gas generation and unit electric energy recovery of the incinerated garbage are obtained by a first preset formula, and the first preset formula is:

[0014] ;

[0015] ;

[0016] in, Indicates the amount of greenhouse gas produced per unit, in units of , Indicates the carbon content of incinerated waste, in units of , , represents the incineration waste component vector, is the number of components in the incineration waste component vector, , and Respectively represent the moisture content, carbon content and fossil carbon content of the nth component in the incineration waste component vector;

[0017] Indicates the unit electric energy recovery amount, in units of , represents the energy recovery rate of the incineration facility, Indicates the lower calorific value of incinerated garbage, in units of , , The heat of evaporation of water, represents the leachate collection rate of the incineration facility, Represents the lower heating value of the nth component in the incinerated garbage component vector.

[0018] According to a method for optimizing a domestic waste treatment system taking into account the influence of waste components provided by the present invention, determining key influencing factors in the waste treatment influencing factors based on the environmental impact value and the economic impact value includes:

[0019] Conducting sensitivity analysis on the environmental impact value and the garbage disposal impact factor to determine a first sensitive impact factor;

[0020] Conducting sensitivity analysis on the economic impact value and the waste treatment impact factor to determine a second sensitive impact factor;

[0021] The key influencing factor is determined based on the first sensitive influencing factor and the second sensitive influencing factor.

[0022] According to a method for optimizing a domestic waste treatment system taking into account the influence of waste components provided by the present invention, the environmental impact value comprises a first environmental impact value, a second environmental impact value, and a third environmental impact value;

[0023] The first environmental impact value reflects the greenhouse gas emissions generated by the material and energy consumption in the process of domestic waste treatment;

[0024] The second environmental impact value reflects the greenhouse gases generated by direct discharge of waste during the treatment of domestic waste;

[0025] The third environmental impact value reflects that the by-products generated during the treatment of domestic waste are used to offset the impact of raw material production.

[0026] According to a method for optimizing a domestic waste treatment system taking into account the influence of waste components provided by the present invention, the economic impact value comprises a first economic impact value, a second economic impact value, a third economic impact value and a fourth economic impact value;

[0027] The first economic impact value reflects the purchase cost of materials and energy in the process of domestic waste treatment;

[0028] The second economic impact value reflects the cost of treating directly discharged waste during the domestic waste treatment process;

[0029] The third economic impact value reflects the economic benefits generated by the sale of by-products produced during the treatment of domestic waste;

[0030] The fourth economic impact value reflects the cost generated by manpower and equipment consumption in the process of domestic waste treatment.

[0031] The present invention also provides a device for optimizing a domestic waste treatment system taking into account the influence of waste components, the device comprising:

[0032] A component change determination module is used to obtain an initial component vector of domestic waste in a target area, wherein the initial component vector of domestic waste includes the proportion of each component, and determine an incineration waste component vector based on the initial component vector of domestic waste and a first influencing factor among waste treatment influencing factors in a domestic waste treatment system, wherein the first influencing factor reflects the waste classification situation in the domestic waste treatment system;

[0033] An inventory updating module, used to determine the unit greenhouse gas generation and unit electric energy recovery of the incineration treatment of the garbage based on the incineration garbage component vector, and update the life cycle inventory of domestic waste treatment based on the unit greenhouse gas generation and unit electric energy recovery of the incineration treatment of the garbage;

[0034] An impact assessment module, for obtaining an environmental impact value and an economic impact value of each process in the life cycle of domestic waste based on the updated life cycle inventory and the waste treatment impact factor, wherein the environmental impact value reflects the environmental impact generated by the domestic waste treatment process, and the economic impact value reflects the economic impact generated by the domestic waste treatment process;

[0035] The optimization suggestion module is used to determine the key impact factors among the waste treatment impact factors based on the environmental impact value and the economic impact value, and generate optimization suggestions for the domestic waste treatment system based on the key impact factors.

[0036] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, it implements any of the above-described methods for optimizing a domestic waste treatment system taking into account the influence of waste components.

[0037] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for optimizing a domestic waste treatment system that takes into account the influence of waste components as described in any of the above.

[0038] The present invention also provides a computer program product, comprising a computer program, which, when executed by a processor, implements any of the above-mentioned methods for optimizing a domestic waste treatment system taking into account the influence of waste components.

[0039] The method for optimizing a domestic waste treatment system taking into account the influence of waste components provided by the present invention obtains an initial component vector of domestic waste in a target area including the proportion of each component, determines an incineration waste component vector based on the initial component vector of domestic waste and a first influencing factor reflecting the situation of waste classification in the domestic waste treatment system, and then determines the unit greenhouse gas generation and unit electric energy recovery of the incineration waste based on the incineration waste component vector, updates the life cycle inventory of domestic waste treatment, obtains the environmental impact value and economic impact value of each process in the life cycle of domestic waste based on the updated life cycle inventory and the waste treatment influencing factor of the domestic waste treatment system, determines the key influencing factors based on the environmental impact value and the economic impact value, and generates optimization suggestions for the domestic waste treatment system. The composition of garbage has a great influence on the results of incineration treatment. In the method provided by the present invention, the composition of garbage entering the incineration process is determined according to the influencing factors that affect garbage classification in the domestic waste treatment system, so as to obtain the unit greenhouse gas generation and unit electric energy recovery generated by the incineration process, and realize the corresponding update of the life cycle inventory of domestic waste treatment based on the actual composition changes of the garbage, so that the calculation results of the environmental impact value and the economic impact value in the process of domestic waste treatment are more consistent with the actual situation. The domestic waste treatment system is optimized based on more accurate environmental impact values ​​and economic impact values, which can achieve the effect of improving the accuracy of the optimization results of the domestic waste treatment system. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the present invention or 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.

[0041] Figure 1 It is a schematic flow chart of a method for optimizing a domestic waste treatment system taking into account the influence of waste components provided by the present invention.

[0042] Figure 2 It is a schematic diagram of the process of changes in domestic waste components in the domestic waste treatment system optimization method considering the influence of waste components provided by the present invention.

[0043] Figure 3 It is a structural schematic diagram of a domestic waste treatment system optimization device provided by the present invention that takes into account the influence of waste components.

[0044] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Combine the following Figure 1-2 The present invention describes a method for optimizing a domestic waste treatment system that takes into account the influence of waste components. Figure 1 As shown, the method for optimizing a domestic waste treatment system taking into account the influence of waste components provided by the present invention comprises the following steps:

[0047] S110, obtaining an initial component vector of domestic waste in the target area, the initial component vector of domestic waste including the proportion of each component, and determining an incineration waste component vector based on the initial component vector of domestic waste and a first influencing factor among waste treatment influencing factors in the domestic waste treatment system, wherein the first influencing factor reflects the waste classification situation in the domestic waste treatment system;

[0048] S120, determining the unit greenhouse gas generation and unit electric energy recovery of the incineration of the garbage based on the incineration component vector, and updating the life cycle inventory of domestic garbage treatment based on the unit greenhouse gas generation and unit electric energy recovery of the incineration of the garbage;

[0049] S130. Based on the updated life cycle inventory and waste treatment impact factors, obtain the environmental impact value and economic impact value of each process in the life cycle of domestic waste, where the environmental impact value reflects the environmental impact of the domestic waste treatment process, and the economic impact value reflects the economic impact of the domestic waste treatment process;

[0050] S140. Determine key influencing factors among waste treatment influencing factors based on environmental impact values ​​and economic impact values, and generate optimization suggestions for the domestic waste treatment system based on the key influencing factors.

[0051] The waste treatment influencing factors in the domestic waste system are variable factors that will affect the environmental and economic performance of the waste treatment results, such as the amount of waste generated, incineration conversion rate, local collection and transportation costs, energy structure composition, etc. It can be understood that different values ​​of waste treatment influencing factors are equivalent to different domestic waste treatment plans. The method provided by the present invention can realize the evaluation of domestic waste treatment plans through the environmental impact values ​​and economic impact values ​​corresponding to the values ​​of waste treatment influencing factors. By determining the key influencing factors among multiple waste treatment influencing factors, and then generating optimization suggestions for the domestic waste treatment system based on the key influencing factors (such as adjusting the values ​​of the key influencing factors), the accuracy of the optimization results of the domestic waste treatment system can be improved, thereby assisting decision makers in deciding a better domestic waste treatment plan.

[0052] The initial component vector of domestic waste in the target area can be obtained based on the statistics of historical data. The initial component vector of domestic waste includes the proportion of each component. The first influencing factor in the waste treatment influencing factor in the domestic waste treatment system reflects the waste classification in the domestic waste treatment system. Specifically, the first influencing factor includes the amount of domestic waste generated, the amount of recyclable waste, the amount of food waste, the amount of other waste, and the proportion of anaerobic digestion of food waste. Through the first influencing factor, the amount and components of domestic waste entering the incineration treatment can be obtained. That is to say, different setting values ​​of the first influencing factor will cause changes in the amount of waste entering the incineration treatment and the composition of the waste. Changes in the amount of waste entering the incineration treatment and the composition of the waste will affect the environmental and economic performance of the incineration treatment process. Therefore, the method provided by the present invention simulates the changes in the components of the waste entering the incineration treatment in the life cycle model of domestic waste treatment to determine the accuracy of the environmental performance and economic performance evaluation results of the domestic waste treatment system.

[0053] Specifically, the present invention constructs a quality and component vector The waste flow of the entire disposal system is simulated. Taking the domestic waste disposal system in Shenzhen as an example, the initial domestic waste entering the system is divided into of household waste tons, which are classified into recyclable waste , kitchen waste and other garbage: (Components are ) Entering the waste recovery system after recycling and not included in the system boundary; (Components are ) is allocated according to the resource utilization rate of kitchen waste, among which of the food waste enters the anaerobic digestion facility, and the remaining The food waste is re-mixed with mixed waste for disposal. ; Other garbage directly enters the mixed garbage. After the above distribution, the mixed garbage is , enter the incineration facility for disposal; the remaining recyclable components that cannot be recycled , sludge produced after anaerobic digestion and fly ash from incineration Entering landfill facilities, landfill waste is The entire system boundary and allocation process are as follows Figure 2 shown.

[0054] Based on the above description, it can be concluded that in the domestic waste treatment system, the amount of mixed waste entering the incineration process is .

[0055] The components in the initial component vector of domestic waste can be determined based on common components of domestic waste. For example, the initial component vector of domestic waste can be expressed as:

[0056] ;

[0057] That is to say, the components included in the initial component vector of domestic waste are: food waste, paper, plastic, fabric, glass, metal, wood, and others.

[0058] After garbage classification, the garbage components entering the waste recycling system can be divided into:

[0059] .

[0060] and , thus further obtaining the incineration garbage component vector of the mixed garbage entering incineration treatment: ;

[0061] Based on the incineration waste component vector, the unit greenhouse gas generation and unit electricity recovery of incineration waste are determined, including:

[0062] Determine the carbon content and lower heating value of the incinerated garbage according to the incinerated garbage component vector and the preset characteristic values ​​of each component, wherein the characteristic values ​​of the components include carbon content, fossil carbon content and moisture content;

[0063] Based on the carbon content and lower heating value of the incinerated garbage, the unit greenhouse gas generation and unit electric energy recovery of the incinerated garbage are obtained by a first preset formula. The first preset formula is:

[0064] ;

[0065] ;

[0066] in, Indicates the amount of greenhouse gas produced per unit, in units of (kg / ton), Indicates the carbon content of incinerated waste, in units of (kg carbon / ton), , represents the vector of incinerated garbage components, is the number of components in the incineration waste component vector, , and They represent the moisture content, carbon content and fossil carbon content of the nth component in the incinerated waste component vector respectively;

[0067] Indicates the unit electric energy recovery, in units of (kWh / ton), represents the energy recovery rate of the incineration facility, Indicates the lower calorific value of incinerated garbage, in units of (kJ / kg), , The heat of evaporation of water, represents the leachate collection rate of the incineration facility, Represents the lower heating value of the nth component in the incineration garbage component vector, The unit is (MJ / kWh).

[0068] That is, according to the mixed waste entering the incineration process The composition characteristics , the fossil carbon content of mixed waste is calculated based on the characteristic value data of domestic waste components in Table 1 , low calorific value , the CO2 emissions and electricity recovery generated by the incineration process are further calculated according to the following formula: , the data value of the corresponding item in the life cycle inventory can be updated:

[0069]

[0070]

[0071]

[0072]

[0073]

[0074] .

[0075] The relevant symbols and definitions in the above formulas are shown in Table 2.

[0076] Table 1

[0077]

[0078] Table 2

[0079]

[0080] The method provided by the present invention performs a life cycle inventory analysis on domestic waste in advance, and constructs a corresponding process framework for different waste treatment processes (such as incineration, composting, landfill, etc.) in the whole process of domestic waste. These process frameworks are analyzed respectively by LCA (life cycle assessment) and LCC (life cycle cost analysis) methods, aiming to find out the key characteristics of each waste treatment process in terms of environmental and economic performance. LCA can evaluate various impacts involved in the life cycle. Since greenhouse gas emissions are currently the most concerned environmental issue in the world, the method provided by the present invention is explained by taking the global warming potential (GWP) as an example.

[0081] The method provided by the present invention takes into account the impact of changes in garbage components under different disposal schemes on system performance when constructing a life cycle assessment model, so that the environmental and economic performance of the incineration process in the model changes with the resource treatment rate of kitchen waste. Dynamic changes can reflect the systematic impact of separate resource disposal of food waste in actual production, making the evaluation results more real and effective.

[0082] The life cycle emission inventory of the domestic waste disposal system can be obtained according to the data release of different cities. Taking S city as an example, the greenhouse gas emissions and economic cost data of the life cycle inventory for the disposal of 1 ton of domestic waste are provided in combination with literature research and Ecoinvent 3.0 database. In the method provided by the present invention, according to the main analysis list of LCA and LCC, combined with the environmental and economic input and output lists involved in the domestic waste treatment process, it is classified from the system level according to four categories: material and energy consumption impact (Consumption), direct emission impact (Emission), interval offset impact (Substitution) and other impacts (Others). Through the environmental and economic input and output lists involved in the domestic waste treatment process, the environmental impact value and economic impact value of each process in the domestic waste life cycle can be calculated under different values ​​of waste treatment impact factors.

[0083] The method provided by the present invention integrates life cycle assessment (LCA) and life cycle cost (LCC) analysis in an analytical framework. It is not limited to the optimization of a single technology, but starts from the system level to optimize the combination and synergy of different waste disposal technologies to improve the overall benefits.

[0084] The environmental impact values ​​and economic impact values ​​under these four frameworks are explained in detail below. The relevant symbols and interpretations in the formulas listed later are shown in Table 3.

[0085] Table 3

[0086]

[0087] Among them, the impact of material and energy consumption refers to the impact caused by energy (Energy) and material (Material) consumption in the process of various types of garbage treatment, such as electricity, diesel consumption, and the use of water, chemical reagents, etc. The environmental list includes greenhouse gas emissions generated by the consumption of various types of materials and energy, and the economic list includes the costs of purchasing various types of materials and energy. In other words, the environmental impact value includes the first environmental impact value, which reflects the greenhouse gas emissions generated by the consumption of materials and energy in the process of domestic garbage treatment, and the economic impact value includes the first economic impact value, which reflects the purchase cost of materials and energy in the process of domestic garbage treatment. The first environmental impact value and the first economic impact value can be expressed by the general formula:

[0088] + ;

[0089] + ;

[0090] Substance j can be calcium hydroxide, polyacrylamide (PAM), bacteria, high-density polyethylene (HDPE), water, etc., and energy k can be electricity, diesel, etc.

[0091] Direct emission impact refers to the impact of direct emissions from various types of waste treatment processes on the system, such as the overflow of carbon dioxide, carbon monoxide, and nitrogen oxides from cogeneration equipment during anaerobic digestion, the overflow of incinerator gas during incineration, and the overflow of leachate and landfill gas during landfilling. The environmental list includes the greenhouse gas impacts generated by the above-mentioned waste emissions, and the economic list includes the costs of treating the above-mentioned waste emissions during various types of waste treatment. That is, the environmental impact value includes the second environmental impact value, and the second environmental impact value reflects the greenhouse gases generated by direct waste emissions in the process of domestic waste treatment. The economic impact value includes the second economic impact value, and the second economic impact value reflects the cost of treating direct waste emissions in the process of domestic waste treatment. The second environmental impact value and the second economic impact value can be expressed by the general formula:

[0092] ; ;

[0093] Directly discharged waste m can be fly ash, leachate, flue gas, sludge, etc.

[0094] It is understandable that based on the unit greenhouse gas generation of incineration of garbage calculated in the previous article, the incineration process in the life inventory can be to update.

[0095] Indirect offsetting impacts refer to the by-products generated by various types of waste treatment processes that can be used to offset the impact of raw material production, such as the electricity generated by anaerobic digestion, incineration and landfill gas utilization to replace grid electricity, and the effect of compost products replacing the corresponding nutrients of traditional fertilizers. The environmental list includes various by-products that offset the greenhouse gas emissions offset by the traditional raw material preparation process, and the economic list includes the economic benefits generated by the sale of by-products of various waste disposal processes in the market. That is, the environmental impact value includes the third environmental impact value, and the third environmental impact value reflects the use of by-products generated in the process of domestic waste treatment to offset the impact of raw material production. The economic impact value includes the third economic impact value, and the third economic impact value reflects the economic benefits generated by the sale of by-products generated in the process of domestic waste treatment. The third environmental impact value and the third economic impact value can be expressed by the general formula:

[0096] ; ;

[0097] Among them, the by-product n can be steam, electricity, organic fertilizer, etc.

[0098] It is understandable that based on the unit electricity recovery of incineration of garbage calculated in the previous article, the energy recovery of incineration in the life list can be calculated. to update.

[0099] Other impacts refer to the impact of other factors in the process of various types of waste disposal, such as waste collection and transportation, labor consumption, equipment investment, and maintenance consumption. These factors are usually ignored in environmental impact assessment and are only included as cost factors. That is, the economic impact value includes the fourth economic impact value, which reflects the cost of labor and equipment consumption in the process of domestic waste treatment. The fourth economic impact value can be expressed by a general formula:

[0100] ;

[0101] ;

[0102] .

[0103] Combining the above four frameworks, the greenhouse gas emissions GWP (total environmental impact value) and life cycle cost LCC (total economic impact value) generated by the domestic waste disposal system can be obtained as follows:

[0104]

[0105]

[0106] Waste disposal processes include incineration, landfill, anaerobic digestion, composting, etc.

[0107] Through the above process, the actual environmental and economic impacts of the domestic waste treatment system can be simulated more accurately, so that the waste treatment influencing factors in the domestic waste treatment system can be optimized based on the obtained environmental impact values ​​and economic impact values, thereby achieving the optimization of the domestic waste treatment plan.

[0108] In the process of domestic waste treatment, there are many waste treatment influencing factors that affect the treatment results. In the method provided by the present invention, key influencing factors are determined among the numerous waste treatment influencing factors to improve the efficiency of optimizing the domestic waste treatment system.

[0109] Specifically, the key influencing factors are determined among the waste treatment influencing factors based on the environmental impact value and the economic impact value, including:

[0110] Conduct sensitivity analysis on environmental impact values ​​and waste treatment impact factors to determine the first sensitive impact factor;

[0111] Conduct sensitivity analysis on economic impact value and waste treatment impact factor and determine the second sensitive impact factor;

[0112] The key influencing factor is determined based on the first sensitive influencing factor and the second sensitive influencing factor.

[0113] The method provided by the present invention performs sensitivity analysis on the calculation results of the environmental impact value and the economic impact value respectively, and obtains factors that have a greater impact on environmental performance and economic performance, namely, the first sensitive impact factor and the second sensitive impact factor. Then, the key impact factor is determined based on the first sensitive impact factor and the second sensitive impact factor. The key impact factor may include the intersection between the first sensitive impact factor and the second sensitive impact factor, that is, the impact factor that has a greater impact on both environmental performance and economic performance. The key impact factor may also include a factor whose sensitivity to environmental performance or economic performance is higher than the average level, that is, an impact factor that has a great impact on environmental performance or a great impact on economic performance, respectively.

[0114] Sensitivity can be determined based on sensitivity analysis, and the sensitivity of different influencing factors can be quantitatively characterized by calculating the sensitivity ratio (SR) according to the following formula:

[0115] ; ;

[0116] in, Indicates the sensitivity of waste treatment influencing factors to environmental impact, Indicates the sensitivity of waste disposal influencing factors to economic impact. and Indicates the benchmark values ​​of the environmental impact value and economic impact value. The benchmark value of the waste treatment impact factor corresponding to the benchmark values ​​of the environmental impact value and the economic impact value, It represents the garbage disposal impact factor after changing the garbage disposal impact factor baseline value. and They respectively represent the environmental impact value and economic impact value corresponding to the garbage disposal impact factor after being changed on the basis of the benchmark value of the garbage disposal impact factor.

[0117] Based on the common parameters in the processes of incineration, composting and landfilling in domestic waste treatment systems, the possible key influencing factors were obtained through experiments as shown in Table 4.

[0118] Table 4

[0119]

[0120] For these key influencing factors, the changes in LCA and LCC results when adjusted to +20% and -20% are calculated, and the corresponding optimization range is given. On this basis, the environmental and economic benefits of different waste disposal schemes are comprehensively evaluated, and valuable reference suggestions are provided for decision makers for the above key influencing factors.

[0121] This method disassembles the waste disposal process through a detailed analysis of the life cycle inventory (LCI) data, identifies and quantifies the technical parameters and key factors that have a significant impact on the environment and economic benefits, and screens out the key factors that affect both environmental and economic performance through sensitivity analysis, providing more accurate improvement plans in comprehensive optimization.

[0122] The following is a description of the domestic waste treatment system optimization device considering the influence of waste components provided by the present invention. The domestic waste treatment system optimization device considering the influence of waste components described below and the domestic waste treatment system optimization method considering the influence of waste components described above can be referred to each other. Figure 3As shown, the domestic waste treatment system optimization device considering the influence of waste components provided by the present invention includes the following modules:

[0123] The component change determination module 310 is used to obtain the initial component vector of domestic waste in the target area, the initial component vector of domestic waste includes the proportion of each component, and determine the incineration waste component vector based on the initial component vector of domestic waste and the first influencing factor of the waste treatment influencing factor in the domestic waste treatment system, the first influencing factor reflects the waste classification in the domestic waste treatment system;

[0124] An inventory updating module 320 is used to determine the unit greenhouse gas generation and unit electric energy recovery of the incineration of the garbage based on the incineration component vector, and update the life cycle inventory of the domestic garbage treatment based on the unit greenhouse gas generation and unit electric energy recovery of the incineration of the garbage;

[0125] The impact assessment module 330 is used to obtain the environmental impact value and economic impact value of each process in the life cycle of domestic waste based on the updated life cycle inventory and waste treatment impact factor, wherein the environmental impact value reflects the environmental impact generated by the domestic waste treatment process, and the economic impact value reflects the economic impact generated by the domestic waste treatment process;

[0126] The optimization suggestion module 340 is used to determine key impact factors among the waste treatment impact factors based on the environmental impact value and the economic impact value, and generate optimization suggestions for the domestic waste treatment system based on the key impact factors.

[0127] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4As shown, the electronic device may include: a processor (processor) 410 , a communication interface (Communications Interface) 420 , a memory (memory) 430 and a communication bus 440 , wherein the processor 410 , the communication interface 420 , and the memory 430 communicate with each other through the communication bus 440 . The processor 410 can call the logic instructions in the memory 430 to execute a method for optimizing a domestic waste treatment system that takes into account the influence of waste components, the method comprising: obtaining an initial component vector of domestic waste in a target area, the initial component vector of domestic waste including the proportion of each component, determining an incineration waste component vector based on the initial component vector of domestic waste and a first influencing factor in the waste treatment influencing factor in the domestic waste treatment system, the first influencing factor reflecting the waste classification in the domestic waste treatment system; determining a unit greenhouse gas generation and a unit electric energy recovery of incineration waste based on the incineration waste component vector, and updating a life cycle inventory of domestic waste treatment based on the unit greenhouse gas generation and the unit electric energy recovery of incineration waste; obtaining an environmental impact value and an economic impact value of each process in the life cycle of domestic waste based on the updated life cycle inventory and the waste treatment influencing factor, the environmental impact value reflecting the environmental impact generated by the domestic waste treatment process, and the economic impact value reflecting the economic impact generated by the domestic waste treatment process; determining key influencing factors in the waste treatment influencing factors based on the environmental impact value and the economic impact value, and generating optimization suggestions for the domestic waste treatment system based on the key influencing factors.

[0128] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0129] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the domestic waste treatment system optimization method considering the influence of garbage components provided by the above methods. The method includes: obtaining an initial component vector of domestic waste in a target area, wherein the initial component vector of domestic waste includes the proportion of each component, and determining an incineration waste component vector based on the initial component vector of domestic waste and a first influencing factor among the garbage treatment influencing factors in the domestic waste treatment system, wherein the first influencing factor reflects the situation of garbage classification in the domestic waste treatment system; based on The unit greenhouse gas generation and unit electric energy recovery of incineration treatment of garbage are determined based on the incineration garbage component vector, and the life cycle inventory of domestic waste treatment is updated based on the unit greenhouse gas generation and unit electric energy recovery of incineration treatment of garbage; based on the updated life cycle inventory and garbage treatment influencing factors, the environmental impact value and economic impact value of each process in the life cycle of domestic waste are obtained, the environmental impact value reflects the environmental impact of the domestic waste treatment process, and the economic impact value reflects the economic impact of the domestic waste treatment process; based on the environmental impact value and the economic impact value, the key influencing factors are determined in the garbage treatment influencing factors, and based on the key influencing factors, optimization suggestions for the domestic waste treatment system are generated.

[0130] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute a method for optimizing a domestic waste treatment system taking into account the influence of waste components provided by the above-mentioned methods, the method comprising: obtaining an initial component vector of domestic waste in a target area, the initial component vector of domestic waste including the proportion of each component, determining an incineration waste component vector based on the initial component vector of domestic waste and a first influencing factor in the waste treatment influencing factor in the domestic waste treatment system, the first influencing factor reflecting the waste classification situation in the domestic waste treatment system; determining a unit greenhouse gas generation and a unit electric energy recovery of incineration waste based on the incineration waste component vector, and updating a life cycle inventory of domestic waste treatment based on the unit greenhouse gas generation and the unit electric energy recovery of incineration waste; obtaining an environmental impact value and an economic impact value of each process in the life cycle of domestic waste based on the updated life cycle inventory and waste treatment influencing factors, the environmental impact value reflecting the environmental impact generated by the domestic waste treatment process, and the economic impact value reflecting the economic impact generated by the domestic waste treatment process; determining key influencing factors in the waste treatment influencing factors based on the environmental impact values ​​and the economic impact values, and generating optimization suggestions for the domestic waste treatment system based on the key influencing factors.

[0131] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0132] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for optimizing the domestic waste treatment system considering the influence of waste components. It is characterized in that The method comprises: Obtaining an initial component vector of domestic waste in a target area, wherein the initial component vector of domestic waste includes the proportion of each component, and determining an incineration waste component vector based on the initial component vector of domestic waste and a first influencing factor among waste treatment influencing factors in a domestic waste treatment system, wherein the first influencing factor reflects the waste classification situation in the domestic waste treatment system; Determine the unit greenhouse gas generation and unit electric energy recovery of the incineration treatment of the garbage based on the incineration garbage component vector, and update the life cycle inventory of domestic garbage treatment based on the unit greenhouse gas generation and unit electric energy recovery of the incineration treatment of the garbage; Based on the updated life cycle inventory and the waste treatment impact factor, the environmental impact value and the economic impact value of each process in the life cycle of domestic waste are obtained, wherein the environmental impact value reflects the environmental impact generated by the domestic waste treatment process, and the economic impact value reflects the economic impact generated by the domestic waste treatment process; Determining key influencing factors among the waste treatment influencing factors based on the environmental impact value and the economic impact value, and generating optimization suggestions for the domestic waste treatment system based on the key influencing factors; The determining of the unit greenhouse gas generation and unit electric energy recovery of the incinerated garbage based on the incinerated garbage component vector includes: Determining the carbon content and lower heating value of the incinerated garbage according to the incinerated garbage component vector and the preset characteristic values ​​of each component, wherein the characteristic values ​​of the components include carbon content, fossil carbon content and moisture content; Based on the carbon content and lower heating value of the incinerated garbage, the unit greenhouse gas generation and unit electric energy recovery of the incinerated garbage are obtained by a first preset formula, and the first preset formula is: ； ； in, Indicates the amount of greenhouse gas produced per unit, in units of , Indicates the carbon content of incinerated waste, in units of , , represents the incineration waste component vector, is the number of components in the incineration waste component vector, , and Respectively represent the moisture content, carbon content and fossil carbon content of the nth component in the incineration waste component vector; Indicates the unit electric energy recovery amount, in units of , represents the energy recovery rate of the incineration facility, Indicates the lower calorific value of incinerated garbage, in units of , , The heat of evaporation of water, represents the leachate collection rate of the incineration facility, Represents the lower heating value of the nth component in the incinerated garbage component vector.

2. The method for optimizing a domestic waste treatment system taking into account the influence of waste components according to claim 1, It is characterized in that The first influencing factors include the amount of domestic waste generated, the amount of recyclable waste, the amount of food waste, the amount of other waste and the proportion of anaerobic digestion treatment of food waste.

3. The method for optimizing a domestic waste treatment system taking into account the influence of waste components according to claim 1, It is characterized in that The determining of key impact factors in the waste treatment impact factors based on the environmental impact value and the economic impact value includes: Conducting sensitivity analysis on the environmental impact value and the garbage disposal impact factor to determine a first sensitive impact factor; Conducting sensitivity analysis on the economic impact value and the waste treatment impact factor to determine a second sensitive impact factor; The key influencing factor is determined based on the first sensitive influencing factor and the second sensitive influencing factor.

4. The method for optimizing a domestic waste treatment system taking into account the influence of waste components according to claim 1, It is characterized in that The environmental impact value includes a first environmental impact value, a second environmental impact value, and a third environmental impact value; The first environmental impact value reflects the greenhouse gas emissions generated by the material and energy consumption in the process of domestic waste treatment; The second environmental impact value reflects the greenhouse gases generated by direct discharge of waste during the treatment of domestic waste; The third environmental impact value reflects that the by-products generated during the treatment of domestic waste are used to offset the impact of raw material production.

5. The method for optimizing a domestic waste treatment system taking into account the influence of waste components according to claim 1, It is characterized in that The economic impact value includes a first economic impact value, a second economic impact value, a third economic impact value and a fourth economic impact value; The first economic impact value reflects the purchase cost of materials and energy in the process of domestic waste treatment; The second economic impact value reflects the cost of treating directly discharged waste during the domestic waste treatment process; The third economic impact value reflects the economic benefits generated by selling by-products generated during the treatment of domestic waste; The fourth economic impact value reflects the cost generated by manpower and equipment consumption in the process of domestic waste treatment.

6. A device for optimizing the domestic waste treatment system taking into account the influence of waste components, It is characterized in that The device comprises: A component change determination module is used to obtain an initial component vector of domestic waste in a target area, wherein the initial component vector of domestic waste includes the proportion of each component, and determine an incineration waste component vector based on the initial component vector of domestic waste and a first influencing factor among waste treatment influencing factors in a domestic waste treatment system, wherein the first influencing factor reflects the waste classification situation in the domestic waste treatment system; An inventory updating module, used to determine the unit greenhouse gas generation and unit electric energy recovery of the incineration treatment of the garbage based on the incineration garbage component vector, and update the life cycle inventory of domestic waste treatment based on the unit greenhouse gas generation and unit electric energy recovery of the incineration treatment of the garbage; An impact assessment module, for obtaining an environmental impact value and an economic impact value of each process in the life cycle of domestic waste based on the updated life cycle inventory and the waste treatment impact factor, wherein the environmental impact value reflects the environmental impact generated by the domestic waste treatment process, and the economic impact value reflects the economic impact generated by the domestic waste treatment process; An optimization suggestion module, used to determine key impact factors among the waste treatment impact factors based on the environmental impact value and the economic impact value, and generate optimization suggestions for the domestic waste treatment system based on the key impact factors; The determining of the unit greenhouse gas generation and unit electric energy recovery of the incinerated garbage based on the incinerated garbage component vector includes: Determining the carbon content and lower heating value of the incinerated garbage according to the incinerated garbage component vector and the preset characteristic values ​​of each component, wherein the characteristic values ​​of the components include carbon content, fossil carbon content and moisture content; Based on the carbon content and lower heating value of the incinerated garbage, the unit greenhouse gas generation and unit electric energy recovery of the incinerated garbage are obtained by a first preset formula, and the first preset formula is: ； ； in, Indicates the amount of greenhouse gas produced per unit, in units of , Indicates the carbon content of incinerated waste, in units of , , represents the incineration waste component vector, is the number of components in the incineration waste component vector, , and Respectively represent the moisture content, carbon content and fossil carbon content of the nth component in the incineration waste component vector; Indicates the unit electric energy recovery amount, in units of , represents the energy recovery rate of the incineration facility, Indicates the lower calorific value of incinerated garbage, in units of , , The heat of evaporation of water, represents the leachate collection rate of the incineration facility, Represents the lower heating value of the nth component in the incinerated garbage component vector.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, It is characterized in that When the processor executes the computer program, the method for optimizing a domestic waste treatment system taking into account the influence of waste components as described in any one of claims 1 to 5 is implemented.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, It is characterized in that When the computer program is executed by a processor, it implements the method for optimizing a domestic waste treatment system taking into account the influence of waste components as described in any one of claims 1 to 5.

9. A computer program product comprising a computer program, It is characterized in that When the computer program is executed by a processor, it implements the method for optimizing a domestic waste treatment system taking into account the influence of waste components as described in any one of claims 1 to 5.

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