Method for determining target emission reduction list and computer program product

Abstract

The invention relates to a target emission reduction list determination method and a computer program product, and relates to the technical field of air pollution control. Comprises: determining a first emission reduction improvement amount; updating the emission amount of the first precursor in the second total emission list according to the first emission reduction improvement amount to obtain a third total emission list; determining a second emission reduction improvement amount; according to the second emission reduction improvement amount, the emission amount of the second precursor in the third total emission list is updated, and a fourth total emission list is obtained; obtaining a target emission reduction list according to the first total emission list and the fourth total emission list; the target emission reduction list indicates the emission reduction amount of the pollution source in the target area. By using the target emission reduction list determination method provided by the invention, the target emission reduction list with a relatively good emission reduction effect can be obtained while the adjustment cost is reduced.

Description

Technical Field

[0001] This disclosure relates to the field of air pollution control technology, and more specifically, to a method for determining a target emission reduction inventory and a computer program product. Background Technology

[0002] To reduce pollutant concentrations in cities, emission reduction lists can be issued when air pollution occurs. These lists include emission reduction measures that each pollution source must implement. Pollution sources in the city must reduce their pollutant emissions according to the emission reduction ratios indicated by these measures, thereby reducing pollutant emissions and improving the city's air quality.

[0003] In related technologies, the emission reduction list is adjusted all at once, which incurs additional adjustment costs. Summary of the Invention

[0004] The purpose of this disclosure is to provide a method and computer program product for determining a target emission reduction inventory, so as to reduce the adjustment cost of the emission reduction inventory.

[0005] To achieve the above objectives, a first aspect of this disclosure provides a method for determining a target emission reduction inventory, comprising: obtaining a first emission reduction improvement amount for a first precursor emitted by a pollution source in the target area based on a first total emission inventory, a first industry inventory, and a first background inventory before emission reduction in the target area, and a second total emission inventory, a second industry inventory, and a second background inventory after emission reduction in the target area; the first industry inventory and the second industry inventory both contain the emission amount of a first precursor among a plurality of precursors emitted by pollution sources in the target area, and the first background inventory and the second background inventory both contain the emission amount of non-first precursors among the plurality of precursors, wherein the plurality of precursors are precursors of pollutants; the first emission reduction improvement amount indicates the degree of reduction in the contribution of the first precursor emitted by the pollution source in the target area to the pollutants; updating the emission amount of the first precursor in the second total emission inventory based on the first emission reduction improvement amount to obtain a third total emission inventory; and obtaining a third total emission inventory based on the emission reduction amount before emission reduction in the target area. The first total emission inventory, the third industry inventory, and the third background inventory, along with the third total emission inventory, the fourth industry inventory, and the fourth background inventory after emission reduction in the target area, yield a second emission reduction improvement amount for the second precursors emitted by pollution sources in the target area. Both the third and fourth industry inventories include the emission amounts of the second precursors among the plurality of precursors, and both the third and fourth background inventories include the emission amounts of non-second precursors among the plurality of precursors. The second emission reduction improvement amount indicates the degree of reduction in the contribution of the second precursors emitted by pollution sources in the target area to the pollutants. The second precursors include precursors with a non-linear relationship with the pollutants. The emission amounts of the second precursors in the third total emission inventory are updated based on the second emission reduction improvement amount to obtain a fourth total emission inventory. A target emission reduction inventory is obtained based on the first and fourth total emission inventories. The target emission reduction inventory indicates the emission reduction amount of pollution sources in the target area.

[0006] To achieve the above objectives, a second aspect of the present disclosure provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the method for determining the target emission reduction list proposed in the first aspect of the present disclosure.

[0007] The above technical solution involves updating the second total emission inventory step-by-step. First, the emissions of the first precursor in the second total emission inventory are updated to obtain the third total emission inventory using the first emission reduction improvement brought about by the reduction of the first precursor from pollution sources. Then, the emissions of the second precursor in the third total emission inventory are updated to obtain the fourth total emission inventory using the second emission reduction improvement brought about by the second precursor. By adjusting the emissions of the first precursor first, the direct impact of the first precursor on pollutant concentrations can be eliminated. Therefore, after controlling the emissions of the first precursor, the impact of the emissions of the second precursor on pollutant concentrations can be more clearly determined, allowing for better control of the second precursor emissions to reduce pollutant concentrations. This step-by-step updating method provides a high degree of directional adjustment, reduces the randomness of adjustments, and minimizes the costs associated with adjustments.

[0008] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0009] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a flowchart of the steps of a method for determining a target emission reduction inventory according to an exemplary embodiment.

[0010] Figure 2 This is a schematic diagram of a total emissions inventory proposed according to an exemplary embodiment.

[0011] Figure 3 This is a schematic diagram illustrating the sensitivity of a pollutant to precursor emissions in different regions, according to an exemplary embodiment.

[0012] Figure 4 This is a schematic diagram illustrating a method for obtaining a total grid emission inventory based on a total emission inventory, according to an exemplary embodiment.

[0013] Figure 5 This is a schematic diagram illustrating how to obtain a list of various grid industries and a list of grid backgrounds, according to an exemplary embodiment.

[0014] Figure 6 This is a schematic diagram of a first target grid region containing multiple pollution sources, according to an exemplary embodiment.

[0015] Figure 7 This is a schematic diagram of a second target grid region containing multiple pollution sources, according to an exemplary embodiment.

[0016] Figure 8This is a schematic diagram illustrating the first and second contribution amounts obtained from an air quality model simulation based on an exemplary embodiment.

[0017] Figure 9 This is a schematic diagram illustrating the third and fourth contribution quantities obtained from an air quality model simulation based on an exemplary embodiment. Detailed Implementation

[0018] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0019] Before explaining the following text, we will first explain the technical terms related to this disclosure so that the reader can understand this solution.

[0020] (1) Emission reduction list. The emission reduction list includes the emission reduction ratio of the target area, basic information of each pollution source, production process of the pollution source, emission reduction measures, emission reduction level, etc. This emission reduction list can be an emergency emission reduction list, such as a list for emission reduction prepared for various air-related institutions in the face of an emergency pollution process.

[0021] The target area refers to the region of interest for which emission reductions are to be implemented.

[0022] The emission reduction ratio is the ratio between the total reduction in precursor emissions in the target area and the original precursor emissions. For example, if the precursor emissions in the target area before emission reduction were 100t and the precursor emissions after emission reduction were 60t, then the total reduction in precursor emissions in the target area is 40t, and the emission reduction ratio is 40%.

[0023] Basic information about pollution sources includes their name, address, industry, and production scale. A pollution source is a location or facility that emits pollutants or precursors within a target area. These sources can be mobile sources (e.g., motor vehicles), dust sources, biomass combustion sources, stationary combustion sources, industrial sources (e.g., various enterprises or factories), and secondary sources. Precursors are the main substances that form pollutants; they react chemically in the atmosphere to generate pollutants. Taking ozone as an example, ozone precursors include NO... x (Nitrogen oxides) and VOCs s (Volatile organic compounds), NO x With VOCs s The main sources are combustion processes, such as vehicle exhaust from mobile sources, industrial emissions, and coal-fired emissions. In the atmosphere, NO... x With VOCs sUnder ultraviolet radiation, a series of complex photochemical reactions occur, resulting in the formation of ozone. These reactions include, on the one hand, the photolysis of NO2 to produce NO and oxygen atoms, and the reaction of the oxygen atoms with oxygen gas to form ozone; on the other hand, VOCs... s During the reaction, hydroxyl radicals are generated. These hydroxyl radicals then react with NO to produce NO2. NO2 is then photolyzed to produce NO and oxygen atoms. The oxygen atoms react with oxygen to form more ozone. This process is called the catalytic cycle of ozone.

[0024] The production process of a pollution source includes its production flow, main discharge points, and pollutant discharge status.

[0025] Emission reduction measures include emission reduction measures for various pollution sources at different emission reduction levels. For example, emission reduction measures such as limiting production, shutting down production, and using low-emission raw materials can be used to control the emission of precursors from pollution sources and thus reduce the concentration of pollutants.

[0026] Emission reduction levels include red, orange, and yellow alert levels. The pollution levels corresponding to red, orange, and yellow alert levels gradually decrease, and the corresponding emission reduction ratios indicated in the emission reduction inventory also gradually decrease. For example, under the red alert level, VOCs... s and NO x Emission reductions must be no less than 30%; VOCs under orange alert level s and NO x Emission reductions must be no less than 20%; VOCs under yellow alert level. s and NO x Emission reductions must be no less than 10%.

[0027] (2) Total Emission Inventory, which includes the emissions of various precursors from each pollution source in the target area. For example... Figure 2 As shown, it illustrates an example of a total emissions inventory that includes CO (carbon monoxide) and NO emissions from pollution sources such as fossil fuel stationary combustion sources, process sources, mobile sources, and solvent use sources. x (Nitrogen oxides), SO2 (sulfur dioxide), NH3 (ammonia), VOCs (volatile organic compounds), PM 2.5 (fine particulate matter), PM 10 Emissions of precursors to inhalable particulate matter, BC (black carbon), and other precursors.

[0028] (3) Industry list: Pollution sources can be classified into different industries. For example, mobile sources can be classified into road mobile sources and non-road mobile sources. Therefore, the same industry list includes the emission of precursors emitted by the same industry. In this embodiment of the disclosure, the proposed pollution source can be different air-polluting institutions such as enterprises or factories. Air-polluting institutions are institutions that emit waste gas. The corresponding industry list is different from the definition of the traditional industry list. The traditional different industry lists include the emission of precursors emitted by different industries, and the same industry list includes the emission of precursors emitted by the same industry. However, in this embodiment of the disclosure, different industry lists include the emission of precursors emitted by different air-polluting institutions, and the same industry list also includes the emission of precursors emitted by different air-polluting institutions. This embodiment of the disclosure uses different industry lists to mark different air-polluting institutions.

[0029] (3) Background Inventory: The background inventory is a list of non-preset precursors in the total emission inventory, excluding the pre-set precursors. This background inventory includes the emission amounts of precursors of non-preset precursors from each pollution source, with the pre-set precursor being NO. x For example, this background list could be the emissions of NO from various pollution sources. x The emission of precursors for all non-pre-defined precursors.

[0030] (4) Contribution amount: The contribution amount refers to the amount of pollutant concentration contributed by precursors emitted from the pollution source. It refers to the pollutant concentration contributed by precursors to the pollutant concentration. For example, if the pollutant concentration is 10 μg / m³... 3 If the precursor VOC S The contribution to pollutants is 2 μg / m³. 3 This represents 10ug / m 3 The concentration of the precursor VOC in the pollutant S Contributed 2ug / m 3 Other non-VOC S Contributed 8ug / m 3 .

[0031] The current emissions reduction inventory mainly targets particulate matter, such as PM2.5, during the autumn and winter seasons. 2.5 PM 10 The emission reduction list is proposed for particulate matter pollution weather. Primary particulate matter and particulate matter precursors are both precursors of particulate matter. When a pollution warning is activated, there is a good linear relationship between particulate matter and primary particulate matter and particulate matter precursors. When the emission of primary particulate matter and particulate matter precursors from pollution sources is reduced according to the emission reduction ratio in the emission reduction list, the concentration of particulate matter pollutants will also decrease, thereby significantly improving air quality in autumn and winter.

[0032] However, there are few emission reduction lists specifically for summer pollution episodes. This is mainly because ozone and its precursors exhibit a strong non-linear relationship during summer pollution. Different emission reduction ratios in the emission reduction lists and the jurisdictions of ozone precursors vary significantly across regions. If ozone precursors are reduced according to an unreasonable emission reduction list, it will not only fail to reduce ozone concentrations but may even lead to an increase, thus negating the intended emission reduction effect. For example, ozone precursors are NO... x With VOCs s For example, if a city belongs to VOC s Control zone (VOCs control zone is an area where priority is given to reducing emissions of VOCs precursors), in which case NO emissions are reduced x Not only will it not decrease ozone concentration, it will actually increase it. Of course, continuing to target NO... x After emission reduction, when NO x When emissions are reduced to a certain percentage, VOCs s The control area will be converted to NO. x Continue to reduce NO emissions in the controlled area. x This can reduce the ozone concentration in the area.

[0033] Please see Figure 3 As shown, different sub-regions within the same target area may belong to different control areas. During a pollution event, a negative value represents negative sensitivity, indicating that reducing emissions of a precursor in a sub-region with a negative value will lead to an increase in ozone concentration. A positive value represents positive sensitivity, indicating that reducing emissions of a precursor in a sub-region with a positive value will lead to a decrease in ozone concentration. It can be seen that for some sub-regions with negative values, even reducing precursor emissions will lead to an increase in ozone concentration.

[0034] Furthermore, even if different air-polluting entities implement the same emission reduction measures, the ozone concentration after emission reduction will still vary significantly, with some entities causing a decrease in ozone concentration while others cause an increase.

[0035] Based on this, this disclosure proposes a method for determining the target emission reduction inventory. Please refer to [link / reference needed]. Figure 1 As shown, the method for determining this target emission reduction list includes the following steps: In step S10, the first emission reduction improvement amount of the first precursor of the pollution source in the target area is obtained based on the first total emission list, the first industry list and the first background list before emission reduction in the target area, and the second total emission list, the second industry list and the second background list after emission reduction in the target area.

[0036] Both the first and second total emission inventories include the emissions of multiple precursors from pollution sources in the target area. The first total emission inventory contains the emissions of multiple precursors from pollution sources in the target area before the implementation of emission reduction measures, while the second total emission inventory contains the emissions of multiple precursors from pollution sources in the target area after the implementation of emission reduction measures.

[0037] For example, taking an air-polluting institution as the source of pollution, the first total emission inventory includes the CO and NO emissions of each air-polluting institution in the target area before implementing emission reduction measures. x SO2, NH3, VOC S PM 2.5 PM 10 Emissions of precursors such as CO and NO; the second total emissions inventory includes the emissions of CO and NO from each air-polluting facility in the target area after implementing emission reduction measures. x SO2, NH3, VOC S PM 2.5 PM 10 Emissions of precursors such as BC.

[0038] A second total emissions inventory can be derived from the first total emissions inventory and the original emissions reduction inventory. For example, the latest first total emissions inventory for the target area can be obtained, and then the first total emissions inventory can be adjusted based on the original emissions reduction inventory to obtain the second total emissions inventory.

[0039] For example, the previous body was NO. x For example, if pollution source A included in the first total emissions inventory emitted NO before implementing emission reduction measures... x The emission volume is 100t, and the estimated NO level to be reached after pollution source A implements the emission reduction measures indicated in the emission reduction inventory is [not specified]. x If the emission volume is 80t, then the NO emitted by pollution source A in the first total emission inventory will be... x The emissions were adjusted from 100t to 80t to obtain a second total emissions inventory.

[0040] Both the first and second industry lists include the emissions of the first precursor among multiple precursors emitted by pollution sources in the target area. The first industry list includes the emissions of the first precursor emitted by pollution sources in the target area before the implementation of emission reduction measures, while the second industry list includes the emissions of the first precursor emitted by pollution sources in the target area after the implementation of emission reduction measures.

[0041] For example, if the pollution source is an air-polluting facility, and the primary precursor is NO. x For example, the first industry list includes NO emissions from air-polluting entities in the target area before they implemented emission reduction measures. x The second industry list includes NO emissions from air-polluting entities in the target area after implementing emission reduction measures.x The emissions.

[0042] Both the first and second background inventories include emissions of non-first precursors from multiple precursors, which are precursors to pollutants. The first background inventory includes emissions of non-first precursors from pollution sources in the target area before they implement emission reduction measures, while the second background inventory includes emissions of non-first precursors from pollution sources in the target area after they implement emission reduction measures.

[0043] For example, if the pollution source is an air-polluting facility and the primary precursor is NOx, the first background inventory includes VOCs emitted by the air-polluting facility in the target area before implementing emission reduction measures. S The second background list includes VOC emissions from air-polluting entities in the target area after implementing emission reduction measures. S The emissions.

[0044] Understandably, the first industry inventory indicates the emissions of primary precursors from pollution sources in the target area, while the first background inventory indicates the emissions of non-primary precursors from pollution sources in the target area. Therefore, the first industry inventory and the first background inventory together form the first total emissions inventory. Similarly, the second industry inventory and the second background inventory together form the second total emissions inventory.

[0045] The first contribution of the first precursor emitted by pollution sources in the target area before emission reduction to pollutants can be obtained based on the first total emission inventory, the first industry inventory, and the first background inventory. The first contribution is the contribution of the emission amount of the first precursor emitted before emission reduction to the pollutant concentration. The second contribution of the first precursor emitted after emission reduction to pollutants in the target area can be obtained based on the second total emission inventory, the second industry inventory, and the second background inventory. Then, the first emission reduction improvement amount can be obtained based on the first contribution and the second contribution. The second contribution is the contribution of the emission amount of the first precursor emitted after emission reduction to the pollutant concentration.

[0046] The first emission reduction improvement amount indicates the degree of reduction in the contribution of the first precursor emitted by pollution sources in the target area to pollutant concentration. The larger the first emission reduction improvement amount, the greater the reduction in the contribution of the first precursor emitted by pollution sources in the target area to pollutant concentration, indicating that the pollutant concentration is reduced more after reducing the emission of the first precursor from that pollution source.

[0047] In step S20, the emissions of the first precursor in the second total emission inventory are updated according to the first emission reduction improvement amount to obtain the third total emission inventory.

[0048] Please see Figure 5As shown, the second total emission inventory is obtained by adjusting the first total emission inventory based on the original emission reduction inventory. The original emission reduction inventory can be obtained by subtracting the first total emission inventory from the second total emission inventory. After the second total emission inventory is updated by the first emission reduction improvement, a new emission reduction inventory will be formed between the updated third total emission inventory and the first total emission inventory. Therefore, updating the second total emission inventory can also be regarded as updating the original emission reduction inventory.

[0049] When updating the emissions of the first precursor in the second total emissions inventory based on the first emission reduction improvement, the emissions of the first precursor in the second total emissions inventory can be updated according to the magnitude of the first emission reduction improvement to obtain the third total emissions inventory.

[0050] If the first emission reduction improvement of the first precursor emitted by the first pollution source in the second total emission inventory is less than the first preset value, the emission amount of the first precursor emitted by the first pollution source in the second total emission inventory is increased to obtain the third total emission inventory.

[0051] For a first pollution source whose first emission reduction improvement is less than the first preset value, it is considered a pollution source with a small first emission reduction improvement. This indicates that the reduction in pollutant concentration brought about by the first pollution source reducing the emission of the first precursor is small, and even if the first pollution source reduces the emission of the first precursor, it will not bring significant improvement to air quality. Therefore, the emission of the first precursor from the first pollution source can be increased in the simulated second total emission inventory to obtain the third total emission inventory. This reduces the difference between the emission of the first precursor from the first pollution source before emission reduction in the first total emission inventory and the emission of the first precursor from the first pollution source after emission reduction in the third total emission inventory (this difference is the amount of first precursor emission reduced by the first pollution source). In other words, the emission reduction of the first precursor from the first pollution source is appropriately reduced. If it is determined that even if the first pollution source implements excessive emission reduction measures, it will not achieve a good emission reduction effect and the improvement to air quality will be small, the emission of the first precursor from the first pollution source in the estimated second total emission inventory can be appropriately increased to appropriately reduce the emission reduction of the first pollution source, thereby ensuring the product output of the first pollution source.

[0052] When increasing the emission amount of the first precursor from the first pollution source, the emission amount of the first precursor in the third total emission inventory can be obtained by increasing a first value based on the emission amount of the first precursor indicated in the second total emission inventory. The first value can be the product of the emission amount of the first precursor from the first pollution source indicated in the first total emission inventory and a first preset ratio.

[0053] If the first emission reduction improvement of the first precursor emitted by the second pollution source in the second total emission inventory is greater than the second preset value, the emission of the first precursor emitted by the second pollution source in the second total emission inventory is reduced to obtain the third total emission inventory. The second preset value is greater than or equal to the first preset value.

[0054] For a pollution source whose first emission reduction improvement is greater than the second preset value, it is a pollution source with a large first emission reduction improvement. This indicates that the reduction in pollutant concentration caused by the second pollution source reducing the emission of the first precursor is significant. Even with a relatively small reduction in the emission of the first precursor, the second pollution source can still bring about a good improvement in air quality. Therefore, the emission of the second precursor from the second pollution source can be reduced in the simulated second total emission inventory to obtain the third total emission inventory. This increases the difference between the emission of the first precursor from the second pollution source before emission reduction in the first total emission inventory and the emission of the first precursor from the second pollution source after emission reduction in the third total emission inventory (this difference represents the amount of first precursor emission reduced by the second pollution source). In other words, the emission reduction of the second pollution source should be appropriately increased. If it is determined that even a relatively weak emission reduction measure for the second pollution source can achieve a good emission reduction effect and a significant improvement in air quality, the estimated emission of the first precursor from the second pollution source in the second total emission inventory can be appropriately reduced to appropriately increase the emission reduction of the second pollution source, thereby obtaining a better emission reduction effect.

[0055] When reducing the emission of the first precursor from the second pollution source, the emission of the first precursor in the third total emission inventory can be obtained by reducing a second value based on the emission of the first precursor indicated in the second total emission inventory. This second value can be the product of the emission of the first precursor from the second pollution source indicated in the first total emission inventory and a second preset ratio.

[0056] It is understandable that in the process of increasing the emissions of the first precursors from the first pollution source in the second total emission inventory to control the first pollution source to appropriately reduce emission reductions, and decreasing the emissions of the first precursors from the second pollution source in the second total emission inventory to control the second pollution source to appropriately increase emission reductions, it is necessary to ensure that the total emission reduction of all pollution sources in the target area remains unchanged, so as to avoid changes in the emission reduction ratio corresponding to the reduced total emission reduction in the target area.

[0057] As can be seen from step S20, when updating the second total emission inventory based on the first emission reduction improvement, the emission amount of the first precursor in the second total emission inventory can be updated to obtain the third total emission inventory with the goal of increasing the first emission reduction improvement. The magnitude of the pollutant concentration reduction resulting from the implementation of emission reduction measures by the pollution source can be determined based on the first emission reduction improvement, and then the emission amount of the first precursor emitted by that pollution source in the second total emission inventory can be adjusted. If the first emission reduction improvement is large, the pollutant concentration reduction is large, and the emission amount of the first precursor indicated in the second total emission inventory can be reduced, allowing the pollution source to increase its emission reduction of the first precursor; if the first emission reduction improvement is small, the pollutant concentration reduction is small, and the emission amount of the first precursor indicated in the second total emission inventory can be increased, allowing the pollution source to decrease its emission reduction of the first precursor.

[0058] In step S30, based on the first total emission inventory, the third industry inventory, and the third background inventory before emission reduction in the target area, and the third total emission inventory, the fourth industry inventory, and the fourth background inventory after emission reduction in the target area, the second emission reduction improvement amount of the second precursors emitted by the pollution sources in the target area is obtained.

[0059] The third total emissions inventory is the emissions of multiple precursors emitted after the implementation of emission reduction measures in the target area. It is a total emissions inventory obtained by adjusting the second total emissions inventory based on the first emission reduction improvement.

[0060] Both the third and fourth industry lists include emissions of secondary precursors from multiple precursors. The third industry list includes emissions of secondary precursors from pollution sources in the target area before they implemented emission reduction measures, while the fourth industry list includes emissions of secondary precursors from pollution sources in the target area after they implemented emission reduction measures.

[0061] Both the third and fourth background lists include emissions of non-secondary precursors from multiple precursors. The third background list includes emissions of non-secondary precursors from pollution sources in the target area before they implemented emission reduction measures, while the fourth background list includes emissions of non-secondary precursors from pollution sources in the target area after they implemented emission reduction measures.

[0062] Understandably, the third sector inventory indicates the emissions of secondary precursors from pollution sources in the target area, while the third background inventory indicates the emissions of non-secondary precursors from pollution sources in the target area. Therefore, the combination of the third sector inventory and the third background inventory forms the first total emissions inventory. Similarly, the combination of the fourth sector inventory and the fourth background inventory can also form the third total emissions inventory.

[0063] The third contribution of the second precursors emitted before emission reduction in the target area to pollutants can be obtained from the first total emission inventory, the third industry inventory, and the third background inventory. The third contribution is the contribution of the emission amount of the second precursors emitted before emission reduction in the target area to the pollutant concentration. The fourth contribution of the second precursors emitted after emission reduction in the target area to pollutants can be obtained from the third total emission inventory, the fourth industry inventory, and the fourth background inventory. The second emission reduction improvement amount can then be obtained from the third and fourth contributions. The fourth contribution is the contribution of the emission amount of the second precursors emitted after emission reduction in the target area to the pollutant concentration.

[0064] The second emission reduction improvement amount indicates the degree of reduction in the contribution of second precursors emitted by pollution sources in the target area to pollutant concentrations. The larger the second emission reduction improvement amount, the greater the reduction in the contribution of second precursors emitted by pollution sources in the target area to pollutant concentrations, indicating that the pollutant concentrations are reduced more after reducing the emissions of second precursors from that pollution source.

[0065] In step S40, the emissions of the second precursor in the third total emission inventory are updated according to the second emission reduction improvement amount to obtain the fourth total emission inventory.

[0066] Subtracting the first total emission list from the fourth total emission list yields the updated emission reduction list. After the third total emission list is updated by the second emission reduction improvement, the updated fourth total emission list and the first total emission list will form a new emission reduction list. Therefore, updating the third total emission list can also be regarded as a second update of the emission reduction list based on the first update of the emission reduction list in step S20.

[0067] When updating the third total emission inventory based on the second emission reduction improvement, the emissions of the second precursor in the third total emission inventory can be updated according to the magnitude of the second emission reduction improvement, or according to the positive or negative value of the second emission reduction improvement. Updating the emissions of the second precursor in the third total emission inventory based on the magnitude of the second emission reduction improvement can be referenced in step S20 above, where the emissions of the first precursor in the second total emission inventory were updated based on the first emission reduction improvement to obtain the third total emission inventory; this will not be repeated here. Updating the emissions of the second precursor in the third total emission inventory based on the positive or negative value of the second emission reduction improvement to obtain the fourth total emission inventory includes the following two examples.

[0068] If the emission of a second precursor from a third pollution source in the third total emission inventory increases the concentration of pollutants, the emission of the second precursor from the third pollution source in the third total emission inventory shall be increased.

[0069] When the second emission reduction improvement is negative, it indicates that reducing the emissions of the second precursor from the third pollution source in the third total emission inventory will increase the pollutant concentration. The more the third pollution source reduces the second precursor, the greater the increase in pollutant concentration, leading to a decline in air quality. Therefore, the emission of the second precursor from the third pollution source can be increased in the obtained third total emission inventory to obtain the fourth total emission inventory. This reduces the difference between the emission of the second precursor from the third pollution source before reduction in the first total emission inventory and the emission of the second precursor from the third pollution source after reduction in the fourth total emission inventory, thus allowing the third pollution source to appropriately reduce its emission reduction of the second precursor. If it is determined that excessive emission reduction measures by the third pollution source will lead to a worse emission reduction effect and a negative impact on air quality, the estimated emission of the second precursor from the third pollution source in the third total emission inventory can be appropriately increased to appropriately reduce the emission reduction of the third pollution source, thereby ensuring air quality.

[0070] If the emission of second precursors from the fourth pollution source in the third total emission inventory reduces the pollutant concentration, the emission of second precursors from the fourth pollution source in the third total emission inventory shall be reduced.

[0071] When the second emission reduction improvement is positive, it indicates that reducing the emissions of the second precursor from the fourth pollution source in the third total emission inventory will decrease the pollutant concentration. The more the fourth pollution source reduces its second precursor emissions, the greater the decrease in pollutant concentration, leading to improved air quality. Therefore, the emission of the second precursor from the fourth pollution source can be reduced in the obtained third total emission inventory to obtain the fourth total emission inventory. This increases the difference between the emission of the second precursor from the fourth pollution source before emission reduction in the first total emission inventory and the emission of the second precursor from the fourth pollution source after emission reduction in the fourth total emission inventory. In other words, the emission reduction of the fourth pollution source should be appropriately increased. If it is determined that implementing emission reduction measures for the fourth pollution source will improve the emission reduction effect and have a positive impact on air quality, the estimated emission of the second precursor from the fourth pollution source in the third total emission inventory can be appropriately reduced to appropriately increase the emission reduction of the fourth pollution source, thereby improving air quality.

[0072] As can be seen from step S40, the emissions of the second precursor in the third total emissions inventory can be updated with the goal of increasing the second emission reduction improvement amount to a positive value. When updating the third total emissions inventory based on the second emission reduction improvement amount, it can be determined whether the emission reduction measures implemented by the pollution source will lead to an increase in pollutant concentration. This allows for adjustment of the emissions of the second precursor emitted by that pollution source in the second total emissions inventory. If the second emission reduction improvement amount is positive, it is determined that the pollution source's reduction of the second precursor will lead to a decrease in pollutant concentration, and the emissions of the second precursor indicated in the third total emissions inventory can be reduced, allowing the pollution source to increase its emission reduction amount. Conversely, if the second emission reduction improvement amount is positive, it is determined that the pollution source's reduction of the second precursor will lead to an increase in pollutant concentration, and the emissions of the second precursor indicated in the third total emissions inventory can be increased, allowing the pollution source to decrease its emission reduction amount.

[0073] In step S50, a target emission reduction list is obtained based on the first total emission list and the fourth total emission list. The target emission reduction list indicates the emission reduction amount of pollution sources in the target area.

[0074] The fourth total emission inventory includes the precursor emissions of multiple precursors emitted by pollution sources in the target area after emission reduction. The third total emission inventory is obtained by updating the second total emission inventory with the first emission reduction improvement amount, and the fourth total emission inventory is obtained by updating the third total emission inventory with the second emission reduction improvement amount. The fourth total emission inventory is obtained on the basis of layer-by-layer updates.

[0075] In the example above, there may be a linear relationship between the first precursor and the pollutant, but there may not be a linear relationship between the second precursor and the pollutant.

[0076] For example, the first precursor is a first preset precursor, and the corresponding second precursor is both the first preset precursor and the second preset precursor. Let the first preset precursor be VOC. S The second presupposed precursor is NO. x For example, the first precursor can be a VOC. S The second precursor can be NO. x With VOCs S .

[0077] For example, the first precursor is a first preset precursor, and the corresponding second precursor is a second preset precursor. Let the first preset precursor be VOC. S The second presupposed precursor is NO. x For example, the first precursor can be a VOC. S The second precursor can be NO. x .

[0078] For example, the first precursor is a first preset precursor and a second preset precursor, and the corresponding second precursor is a second preset precursor. Let the first preset precursor be VOC. S The second presupposed precursor is NO. x For example, the first precursor can be NO. x With VOCs S The second precursor can be NO. x .

[0079] In the first scenario, if the first precursor is a VOC S The second precursor is NO. x With VOCs S The pollutant is ozone. This can be determined based on the first total emissions inventory before emission reductions in the target area, and its correlation with VOCs. S The relevant first industry list and related to VOCs S An irrelevant first background list is used to obtain the VOCs emitted by pollution sources in the target area before emission reduction. S Emissions contribute primarily to ozone concentration; based on the second total emissions inventory after emission reductions in the target area, and VOCs... S The relevant second industry list and related to VOCs S An irrelevant second background list is used to obtain the VOCs emitted by pollution sources in the target area after emission reduction. S The second contribution of emissions to ozone concentration; then, based on the first and second contributions, the VOC emission reduction targets for the target area are obtained. S The resulting first improvement in emissions reduction.

[0080] Then, based on the magnitude of the first emission reduction improvement, the VOC emissions from each pollution source in the second total emission inventory are... S Emissions were updated to obtain the third total emissions inventory. A significant improvement in the first emission reduction indicates a reduction in VOCs from pollution sources. S Emissions that increase the rate of ozone concentration decrease can be included in the second total emission inventory for VOCs emitted by this pollution source. S Reduced emissions, thereby increasing VOCs from the pollution source. S Emission reduction; the first emission reduction improvement amount indicates a reduction in VOCs from pollution sources. S If the emissions do not cause a significant decrease in ozone concentration, then the VOCs emitted by this pollution source in the second total emissions inventory can be included. S Increased emissions reduce VOCs from this pollution source. S Emission reduction.

[0081] Then, based on the first total emissions inventory before emission reduction in the target area, and NO x and VOCs S The relevant third industry list and NO xand VOCs S An irrelevant third background list was used to obtain the NO emissions from pollution sources in the target area before emission reduction. x and VOCs S The third contribution of emissions to ozone concentration; based on the third total emissions inventory after emission reductions in the target area, and NO x and VOCs S The relevant fourth industry list and NO x and VOCs S An irrelevant fourth background list yields NO emissions from pollution sources in the target area after reduction. x and VOCs S The fourth contribution of emissions to ozone concentration; then, based on the third and fourth contributions, the NO emission reduction from pollution sources in the target area is obtained. x and VOCs S The resulting second emission reduction improvement.

[0082] Then, based on the magnitude of the second emission reduction improvement, adjust the NO in the third total emission inventory. x and VOCs S The emissions were updated to obtain the fourth total emissions inventory. A significant improvement in the second emission reduction indicates a reduction in NO from pollution sources. x and VOCs S If the emissions result in a significant decrease in ozone concentration, then the NO emissions from this pollution source in the third total emissions inventory can be included. x and VOCs S Reduced emissions will increase NO from this pollution source. x and VOCs S Emission reduction; the second emission reduction improvement amount indicates that the pollution source has reduced NO. x and VOCs S If the emissions do not cause a greater decrease in ozone concentration, then the NO emissions from this pollution source in the third total emissions inventory can be included. x and VOCs S Increased emissions will reduce NO from this pollution source. x and VOCs S Emission reduction.

[0083] Finally, based on the first total emission inventory and the fourth total emission inventory, the fourth total emission inventory is subtracted from the first total emission inventory to obtain the target emission reduction inventory.

[0084] In the second scenario, if the first precursor is NO x With VOCs S The second precursor can be NO. x The pollutant is ozone. This can be determined based on the first total emissions inventory before emission reductions in the target area, and its correlation with NO. x and VOCsS The relevant first industry list and NO x and VOCs S An irrelevant first background list is used to obtain the NOx and VOC emissions from pollution sources in the target area before emission reduction. S Emissions contribute primarily to ozone concentration; based on the second total emissions inventory after emission reductions in the target area, and NO... x and VOCs S The relevant second industry list and NO x and VOCs S An irrelevant second background list is used to obtain the NO emissions from pollution sources in the target area after emission reduction. x and VOCs S The second contribution of emissions to ozone concentration; then, based on the first and second contributions, the NO emission reduction targets for pollution sources in the target area are obtained. x and VOCs S The resulting first improvement in emissions reduction.

[0085] Then, based on the magnitude of the first emission reduction improvement, the NO emissions from each pollution source in the second total emission inventory are adjusted. x and VOCs S The emissions were updated to obtain the third total emissions inventory. A significant improvement in the first emission reduction indicates a reduction in NO from pollution sources. x and VOCs S If the emissions result in a significant decrease in ozone concentration, then the NO emissions from this pollution source in the second total emissions inventory can be included. x and VOCs S Reduced emissions will increase NO from this pollution source. x and VOCs S Emission reduction; the first emission reduction improvement amount indicates a reduction in NO from pollution sources. x and VOCs S If the emissions do not increase the magnitude of the ozone concentration decrease, then the NO emissions from this pollution source in the second total emissions inventory can be included. x and VOCs S Increased emissions will reduce NO from this pollution source. x and VOCs S Emission reduction.

[0086] Then, based on the first total emissions inventory before emission reduction in the target area, and NO x The relevant third industry list and NO x An irrelevant third background list was used to obtain the NO emissions from pollution sources in the target area before emission reduction. x The third contribution of emissions to ozone concentration; based on the third total emissions inventory after emission reductions in the target area, and NO x The relevant fourth industry list and NOx An irrelevant fourth background list yields NO emissions from pollution sources in the target area after reduction. x The fourth contribution of emissions to ozone concentration; then, based on the third and fourth contributions, the NO emission reduction from pollution sources in the target area is obtained. x The resulting second emission reduction improvement.

[0087] Then, based on the magnitude of the second emission reduction improvement, adjust the NO in the third total emission inventory. x The emissions were updated to obtain the fourth total emissions inventory. A significant improvement in the second emission reduction indicates a reduction in NO from pollution sources. x If the emissions result in a significant decrease in ozone concentration, then the NO emissions from this pollution source in the third total emissions inventory can be included. x Reduced emissions will increase NO from this pollution source. x Emission reduction; the second emission reduction improvement amount indicates that the pollution source has reduced NO. x If the emissions do not cause a greater decrease in ozone concentration, then the NO emissions from this pollution source in the third total emissions inventory can be included. x Increased emissions will reduce NO from this pollution source. x Emission reduction.

[0088] Finally, based on the first total emission inventory and the fourth total emission inventory, the fourth total emission inventory is subtracted from the first total emission inventory to obtain the target emission reduction inventory.

[0089] It is understandable that the first and second scenarios mentioned above can be combined to form new scenarios, for example, based on the VOCs emitted by the pollution source. S The emission reduction improvements are used to update the second total emission inventory, resulting in the first updated second total emission inventory; then, VOCs emitted from pollution sources are used... S with NO x The emission reduction improvement is used to update the second total emission inventory after the first update, resulting in the second updated total emission inventory; then, the NO emission from pollution sources is used. x The emission reduction improvements are used to update the second total emission inventory after the second update, resulting in the third updated second total emission inventory. Of course, the first and second scenarios mentioned above can also be considered as a single scenario, and this disclosure does not impose any restrictions on this.

[0090] Furthermore, pollution sources in the target area can be divided into three types: the first type is those that only emit VOCs. S The first source of pollution is VOC emissions. S with NO x The third type of pollution source is those that only emit NO. xThe emission reduction inventory obtained in this embodiment includes emission reduction measures for different types of pollution sources and different pollution sources of the same type. After implementing the respective emission reduction measures, the emission reduction ratio indicated in the emission reduction inventory can be achieved, and the emission amount of precursors of the emissions after emission reduction in the final fourth total emission inventory can be achieved, so as to achieve the expected emission reduction effect.

[0091] In the above scheme, the fourth total emission inventory is a simulated list of the expected emissions after each pollution source implements emission reduction measures. During the process of updating and adjusting the emissions of the first precursor in the second total emission inventory based on the first emission reduction improvement of the first precursor emitted by the pollution source, the goal is to reduce the pollutant concentration by adjusting the emissions of the first precursor in the second total emission inventory. The difference between the adjusted third total emission inventory and the original first total emission inventory, representing the emission reduction of the first precursor emitted by the pollution source, will lead to a decrease in pollutant concentration. Similarly, during the process of updating and adjusting the emissions of the second precursor in the third total emission inventory based on the second emission reduction improvement of the second precursor emitted by the pollution source, the goal is to reduce the pollutant concentration by adjusting the emissions of the second precursor in the third total emission inventory. The difference between the adjusted fourth total emission inventory and the original first total emission inventory, representing the emission reduction of the second precursor emitted by the pollution source, will further reduce pollutant concentration.

[0092] It is understood that, in any embodiment of this disclosure, the emission reduction measures implemented in the target area may be a scheme implemented under the emission reduction measures of the red alert level; or a scheme implemented under the emission reduction measures of the orange alert level; or a scheme implemented under the emission reduction measures of the yellow alert level. This disclosure does not limit this.

[0093] The emission reduction amounts of the pollution sources in the target emission reduction inventory obtained after performing the above steps S10 to S50 may not be very stable. In order to make the emission reduction amounts of the pollution sources in the target emission reduction inventory more stable and accurate, the following steps can be iterated repeatedly: (1) Determine the difference between the emission reduction amount of the pollution sources in the target emission reduction list obtained in the previous step S10~S50 and the target emission reduction list obtained in the next step S10~S50.

[0094] (2) If the difference value is greater than the preset difference value (e.g., 2%), then continue to execute step (1) until the difference value is less than the preset difference value; when the difference value is less than the preset difference value, then the next target emission reduction list obtained in the two adjacent target emission reduction lists obtained in this iteration process will be used as the final target emission reduction list. In this way, the emission reduction amount of each pollution source in the target emission reduction list will be a stable and accurate value.

[0095] The above technical solution allows for the following: First, the second total emission inventory is updated to a third total emission inventory based on the first emission reduction improvement resulting from the reduction of the first precursor emissions from pollution sources. Then, the third total emission inventory is updated to a fourth total emission inventory based on the second emission reduction improvement resulting from the reduction of the second precursor emissions from pollution sources. Finally, the target emission reduction inventory is obtained by combining the fourth total emission inventory with the first total emission inventory. This approach offers the following advantages: Firstly, because there is a non-linear relationship between some precursors and pollutants, while there is a linear relationship between other precursors and pollutants, if the pollution sources in the second total emission inventory are updated and adjusted all at once to obtain the fourth total emission inventory, some pollution sources will cause the pollutant concentration to increase after implementing emission reduction measures, while other pollution sources will cause the pollutant concentration to decrease. This unstable state of rising or falling pollutant concentrations will lead to an unclear direction of emission reduction, and the final pollutant concentration will not be reduced, resulting in poor emission reduction effect. Furthermore, if the total emission inventory is repeatedly adjusted to obtain an emission reduction inventory with a slightly better emission reduction effect, the repeated adjustments will bring significant adjustment costs.

[0096] For example, if adjustments are made to multiple precursors emitted by pollution sources in the second total emission inventory at once, while simultaneously controlling NO emissions from all pollution sources in the target area... x Emissions and VOCs S Emission reduction, for some VOC emissions S Regarding pollution sources, due to VOCs S There is a linear relationship between VOCs and ozone concentration, therefore, controlling VOCs... S Reducing emissions can lower ozone concentrations; however, it can also reduce NO emissions. x Regarding the sources of pollution, due to NO x There is a highly non-linear relationship between NO and ozone concentration, and controlling NO... xReducing emissions may lower or raise ozone concentrations. A one-off adjustment introduces uncertainty into the ozone concentration adjustment; it could decrease while simultaneously increasing, ultimately failing to lower the concentration. Therefore, a one-off adjustment causes the ozone concentrations from precursors emitted by various pollution sources to be coupled, resulting in an unclear adjustment direction. Following the emission reduction list corresponding to the adjusted total emission inventory will not achieve effective emission reduction.

[0097] In this embodiment, the second total emission inventory is updated step-by-step. After updating the emissions of the first precursor in the second total emission inventory to obtain the third total emission inventory using the first emission reduction improvement brought about by the reduction of the first precursor from the pollution source, the emissions of the second precursor in the third total emission inventory are then updated using the second emission reduction improvement brought about by the second precursor to obtain the fourth total emission inventory. Since the emissions of the second precursor, which have a highly non-linear relationship with the pollutants, are updated after the emissions of the first precursor, the updates are made after the pollutant concentration has been reduced by updating the emissions of the first precursor, thus updating the emissions of the second precursor, which have greater uncertainties. This step-by-step updating method can reflect a high degree of adjustment directionality and reduce the costs associated with adjustments.

[0098] For example, VOC emissions can be used first. S The reduction of VOCs from pollution sources S The resulting emission reduction improvements will impact VOCs in the second total emission inventory. S The emissions data will be updated; VOC emissions will then be monitored. S with NO x VOC emissions reduced from pollution sources S with NO x The resulting emission reduction improvements will impact VOCs in the second total emission inventory. S with NO x The emissions were updated; finally, the NO emissions were adopted. x NO reduction from pollution sources x The resulting emission reduction improvements are related to the NO in the second total emission inventory. x Emissions are updated to obtain the fourth total emissions inventory. This method of gradually adjusting the emissions of different precursors, that is, controlling the emission reduction of different precursors from different pollution sources, allows for more directional adjustments to pollutant concentrations, thereby reducing the costs associated with such adjustments.

[0099] Secondly, by first adjusting the emissions of the first precursor in the second total emission inventory, which has a linear relationship with pollutant concentration, and then adjusting the emissions of the second precursor in the third total emission inventory, which has a non-linear relationship with pollutant concentration, the direct impact of the first precursor on pollutant concentration can be eliminated. Thus, after controlling the emissions of the first precursor, the impact of the emissions of the second precursor on pollutant concentration can be more clearly determined, thereby better controlling the emissions of the second precursor to reduce pollutant concentration.

[0100] For example, if the first precursor is VOC S The second precursor is NO. x For example, VOCs S There is a linear relationship between NO and pollutant concentration. x There is a non-linear relationship between VOC emissions and pollutant concentration; therefore, VOC emissions can be controlled first. S Reducing pollution sources lowers the overall pollutant concentration in the target area; further controlling NO emissions... x With VOCs S The reduction of pollution sources led to a further decrease in the overall pollutant concentration in the target area; finally, the control of NO, the most uncertain factor, was achieved. x Emissions reduction will be implemented to gradually lower the concentration of pollutants in the target area.

[0101] Thirdly, the scheme can propose different emission reduction amounts for each pollution source. The second total emission inventory contains multiple pollution sources. For pollution sources emitting the first precursor, the emission amount of the first precursor can be adjusted in the second total emission inventory first, thus obtaining the emission reduction amount between the initial emission amount and the first precursor emission amount. For pollution sources emitting the second precursor, the emission amount of the second precursor can be adjusted in the second total emission inventory later, thus obtaining the emission reduction amount between the initial emission amount and the second precursor emission amount.

[0102] Figure 6 and Figure 7 Exemplary schemes for obtaining a first industry list, a second industry list, a third industry list, and a fourth industry list are shown, including at least one of the following schemes.

[0103] (1) Based on the first total emission inventory, the multiple pollution sources in the first target grid are divided into multiple different industry lists to obtain the first industry list.

[0104] The first industry list consists of multiple different industry lists, and the first target grid is the grid where the pollution source emitting the first precursor is located among the multiple grids.

[0105] First, based on the original emission reduction inventory, identify the pollution sources that need emission reduction. Then, identify the first target grids from the pollution sources that need emission reduction, where the pollution sources emitting the first precursor are located. Next, mark the first target grids where the pollution sources emitting the first precursor are located with different identifiers, and mark the grids where the pollution sources that do not emit the first precursor are located with a unified identifier, thus obtaining a first grid marking file. The first grid marking file indicates the first target grids where different pollution sources are located, as well as the number of pollution sources contained in the different first target grids. Then, based on the first grid marking file, determine the first grid with the most pollution sources among the multiple first target grids, and obtain the number of pollution sources in that first grid. Finally, divide the pollution sources in different first grid areas into multiple different industry lists, where the maximum number of multiple different industry lists is the number of pollution sources in that first grid.

[0106] For example, please see Figure 6 As shown, the first precursor is VOC. S For example, we can first determine the VOC emissions based on the original emission reduction inventory. S The first target grid is where the pollution source is located; then, the VOC emissions are monitored. S The first target grid containing the pollution source is marked with three different identifiers: 2, 3, and 4. For areas that do not emit VOCs... S The first target grid containing the pollution source is marked with a unified identifier 1, thus obtaining the first grid marking file; then, based on the first grid marking file, the first grid 3 containing the most pollution sources among the multiple first target grids is determined, and the number of pollution sources contained in the first grid 3 is obtained. Figure 6 If the black dots in the grid represent pollution sources, and the value is 10, then the maximum number of different industry lists is also 10, corresponding to 10 industry lists. Therefore, the five pollution sources in the first target grid 2 can be assigned to the first 5 industry lists of the 10 industry lists, the ten pollution sources in the first grid 3 can be assigned to the 10 industry lists, and the two pollution sources in the first target grid 4 can be assigned to the first 2 industry lists of the 10 industry lists. This gives us the first industry list.

[0107] The first grid marking file can locate the first target grid where each pollution source emitting the first precursor is located. The first industry list can locate the industry where each pollution source emitting the first pollution source is located. It is also considered that the first industry list can distinguish and locate multiple pollution sources contained in the same first target grid. Therefore, the first grid marking file and the first industry list can uniquely locate the location of a pollution source emitting the first precursor in the target area and the emission amount of the pollution source.

[0108] (2) Based on the second total emission inventory, the multiple pollution sources in the first target grid are divided into multiple different industry inventories to obtain the second industry inventory.

[0109] The second industry list consists of several different industry lists. Scheme (2) can be referenced from Scheme (1) and will not be repeated here.

[0110] (3) Based on the first total emission inventory, the multiple pollution sources in the second target grid are divided into multiple different industry lists to obtain the third industry list.

[0111] The third industry list consists of multiple different industry lists, and the second target grid is the grid where the pollution source emitting the second precursor is located among the multiple grids.

[0112] First, based on the original emission reduction inventory, identify the pollution sources that need emission reduction. Then, from the pollution sources that need emission reduction, identify the second target grids where the pollution sources emitting the second precursor are located. Next, mark the second target grids where the pollution sources emitting the second precursor are located with different identifiers, and mark the grids where the pollution sources that do not emit the second precursor are located with a unified identifier, thereby obtaining a second grid marking file. The second grid marking file indicates the second target grids where different pollution sources are located, as well as the number of pollution sources contained in the different second target grids. Then, based on the second grid marking file, identify the second grid with the largest number of pollution sources among the multiple second target grids, and obtain the number of pollution sources in that second grid. Finally, divide the pollution sources in different second grid areas into multiple different industry lists, and the maximum number of multiple different industry lists is the number of pollution sources in that second grid.

[0113] For example, please see Figure 7 As shown, the second precursor is VOC. S with NO x For example, we can first determine the VOC emissions based on the original emission reduction inventory. S with NO x The second target grid is where the pollution source is located; then, the VOC emissions are monitored. S with NO x The second target grid containing the pollution source is marked with three different identifiers: 5, 6, and 7. For grids that do not emit VOCs... S with NO x The second target grid containing the pollution source is marked with a unified identifier 1, thus obtaining the second grid marking file; then, based on the second grid marking file, the second grid 7 containing the most pollution sources among the multiple second target grids is determined, and the number of pollution sources contained in the second grid 7 is obtained. Figure 7The black dots in the grid represent pollution sources. Since the number is 8, the maximum number of different industry lists is also 8, corresponding to 8 industry lists. Therefore, the five pollution sources in the second target grid 5 can be assigned to the first 5 industry lists of the 8 industry lists, the three pollution sources in the second grid 6 can be assigned to the first 3 industry lists of the 8 industry lists, and the eight pollution sources in the second target grid 7 can be assigned to the 8 industry lists. This gives us the second industry list.

[0114] The second grid marker file can locate the second target grid where each pollution source emitting the second precursor is located. The second industry list can locate the industry where each pollution source emitting the second precursor is located. It is also considered that the second industry list can distinguish and locate multiple pollution sources contained in the same second target grid. Therefore, the second grid marker file and the second industry list can uniquely locate the location of a pollution source emitting the second precursor in the target area and the emission amount of that pollution source.

[0115] (4) Based on the third total emission inventory, the multiple pollution sources in the second target grid are divided into multiple different industry lists to obtain the fourth industry list.

[0116] The fourth industry list consists of several different industry lists. Scheme (4) can be referred to Scheme (3) and will not be repeated here.

[0117] The above technical solution has several advantages. First, by using grid marking files and industry lists, the location of a pollution source in a target area and the amount of emissions from that source can be uniquely located, thereby enabling targeted emission reductions for each pollution source.

[0118] Secondly, in the process of classifying multiple pollution sources emitting the first precursor into different industry lists to obtain the first industry list, and classifying multiple pollution sources emitting the second precursor into different industry lists to obtain the second industry list, the number of industry lists can be unlimited. However, this would result in an excessive number of industry lists, which would lead to a slow running speed or even failure to run the model. In contrast, this disclosure controls the number of industry lists to be equal to the maximum number of pollution sources in the first or second target grid, which can reduce the number of industry lists and thus improve the running speed of the air quality model.

[0119] For example, if there are 100 pollution sources emitting the first precursor, then these 100 pollution sources need to be divided into 100 different industry lists. However, this would require configuring 100 industry lists, resulting in an excessive number of industry lists. In contrast, this disclosure only requires obtaining the number of pollution sources contained in the first grid and the second grid, which contain the most pollution sources. For example, if the maximum number of pollution sources contained in the first target grid that emits pollution sources containing the first precursor is 10, then the pollution sources in the different first target grids can be divided into 10 industry lists, instead of configuring 100 industry lists. This greatly reduces the number of industry lists that need to be configured, while still achieving the goal of locating the industry where the pollution source is located.

[0120] Figure 5 An exemplary scheme for obtaining a first background list, a second background list, a third background list and a fourth background list is shown, which includes at least one of the following schemes (1) to (3).

[0121] (1) Remove the first industry list from the first total emission list to obtain the first background list.

[0122] The first industry list indicates the amount of first precursors emitted by each pollution source emitting the first precursor in the target area before emission reduction. The first total emission list indicates the amount of multiple precursors emitted by all pollution sources in the target area before emission reduction. After removing the first industry list from the first total emission list, the amount of non-first precursors emitted by pollution sources that do not emit the first precursor in the target area before emission reduction can be obtained.

[0123] For example, if the first precursor is VOC S For example, if the first total emissions inventory includes VOC emissions... S VOCs emitted from multiple pollution sources S Emissions, VOC emissions S with NO x VOCs emitted from multiple pollution sources S with NO x Emissions, NO emissions x NO emitted from multiple pollution sources x Emissions, the first industry list includes VOC emissions S VOCs emitted from multiple pollution sources S Emissions, after removing the first industry list from the first total emissions list, the remaining first background list includes VOC emissions. S with NO x VOCs emitted from multiple pollution sources S with NO x Emissions, NO emissions xNO emitted from multiple pollution sources x A list of emissions.

[0124] (2) Remove the second industry list from the second total emission list to obtain the second background list.

[0125] Scheme (2) can refer to the example of Scheme (1), and will not be repeated here.

[0126] (3) Remove the third industry list from the first total emission list to obtain the third background list.

[0127] The third industry list indicates the amount of second precursors emitted by each pollution source emitting second precursors in the target area before emission reduction. The first total emission list indicates the amount of multiple precursors emitted by all pollution sources in the target area before emission reduction. After removing the third industry list from the first total emission list, the amount of non-second precursors emitted by pollution sources that do not emit second precursors in the target area before emission reduction can be obtained.

[0128] For example, the second precursor is VOC S with NO x For example, if the first total emissions inventory includes VOC emissions... S VOCs emitted from multiple pollution sources S Emissions, VOC emissions S with NO x VOCs emitted from multiple pollution sources S with NO x Emissions, NO emissions x NO emitted from multiple pollution sources x Emissions, the third industry list includes VOC emissions. S with NO x VOCs emitted from multiple pollution sources S with NO x Emissions, after removing the tertiary sector list from the tertiary total emissions list, the remaining tertiary background list includes VOC emissions. S VOCs emitted from multiple pollution sources S Emissions, NO emissions x NO emitted from multiple pollution sources x A list of emissions.

[0129] (4) Remove the fourth industry list from the third total emission list to obtain the fourth background list.

[0130] Scheme (4) can refer to the example of Scheme (3), and will not be repeated here.

[0131] The above technical solution can be used to obtain a background list for each stage, so that the emission reduction improvement of each precursor can be obtained based on the background list.

[0132] Figure 8 An exemplary scheme for obtaining the first emission reduction improvement in step S10 above is shown, which includes the following steps (1) to (3): (1) The first total emission list, the first industry list and the first background list are processed into a grid to obtain the first total grid emission list, the first grid industry list and the first grid background list, and the second total emission list, the second industry list and the second background list are processed into a grid to obtain the second total grid emission list, the second grid industry list and the second grid background list.

[0133] Please see Figure 4 As shown, pollution source treatment software can be used to perform grid processing on the first total emission inventory and the second total emission inventory to obtain the first total grid emission inventory and the second total grid emission inventory. The first total grid emission inventory includes the emission amount of precursors emitted by pollution sources in each grid in the target area before emission reduction, and the second total grid emission inventory includes the emission amount of precursors emitted by pollution sources in each grid in the target area after emission reduction.

[0134] Pollution source treatment software can be used to perform grid-based processing on the first industry list and the second industry list to obtain the first grid industry list and the second grid industry list. The first grid industry list contains the emissions of the first precursor of the pollutant emitted by the pollution source in the grid of the target area before emission reduction, and the second grid industry list contains the emissions of the first precursor of the pollutant emitted by the pollution source in the grid of the target area after emission reduction.

[0135] Pollution source treatment software can be used to perform grid processing on the first background list and the second background list to obtain the first grid background list and the second grid background list. The first grid background list and the second grid background list are the same, both of which contain the emission amount of non-first precursors emitted by pollution sources that emit non-first precursors in the grid of the target area.

[0136] The pollution source treatment software mentioned above can be SMOKE or other software, and this disclosure does not limit it.

[0137] (2) Input the first total grid emission list, the first grid industry list, the first grid background list, the second total grid emission list, the second grid industry list and the second grid background list into the air quality model to obtain the first contribution of the first precursor emitted before emission reduction and the second contribution of the first precursor emitted after emission reduction in the target area.

[0138] The air quality model can be any of the models in NAQPMS (Nested Air Quality Prediction Modeling System), CMAQ (Community Multiscale Air Quality), or CAMx (Comprehensive Air Quality Model with Extensions).

[0139] After inputting the first grid emission inventory, the first grid industry inventory, and the first grid background inventory into the air quality model, the air quality model can obtain the first contribution of the emission amount of the first precursor of each pollution source emitting the first precursor to the pollutant concentration in the target area before emission reduction.

[0140] The air quality model can locate the position of each pollution source emitting the first precursor in the target area and the emission amount of each pollution source before emission reduction based on the industry list of the first grid, thus uniquely locating the emission amount of the first precursor emitted by the pollution source before emission reduction; based on the background list of the first grid, the interaction relationship between the emission amount of the first precursor and other non-first precursors can be analyzed, thus obtaining a more accurate first contribution before emission reduction.

[0141] After inputting the second grid emission inventory, the second grid industry inventory, and the second grid background inventory into the air quality model, the air quality model can obtain the second contribution of the emission amount of the first precursor of each pollution source emitting the first precursor in the target area to the pollutant concentration after emission reduction.

[0142] The air quality model can locate the position of each pollution source emitting the first precursor in the target area and the emission amount of each pollution source after emission reduction based on the industry list of the second grid, thus uniquely locating the emission amount of the first precursor after emission reduction of the pollution source; based on the background list of the second grid, the interaction relationship between the emission amount of the first precursor and other non-first precursors can be analyzed, thus obtaining a more accurate first contribution after emission reduction.

[0143] In addition to inputting the above grid list into the air quality model, the first grid marker file and the meteorological background field of the target area can also be input into the air quality model to obtain the first and second contributions before and after emission reduction.

[0144] (3) Based on the first contribution and the second contribution, the first emission reduction improvement is obtained.

[0145] The difference between the first and second contributions can be used as the first emission reduction improvement. If the first contribution before emission reduction is greater than the second contribution after emission reduction, it means that reducing the emission of the first precursor from the pollution source will lead to a decrease in pollutant concentration and improve air quality; conversely, if the contribution before emission reduction is less than the second contribution after emission reduction, it means that reducing the emission of the first precursor from the pollution source will lead to an increase in pollutant concentration and reduce air quality.

[0146] Optionally, the first emission reduction contribution can be obtained by using the first contribution and the second contribution; and the first emission reduction improvement can be obtained by using the first emission reduction contribution and the emission reduction amount.

[0147] For example, the difference between the first contribution and the second contribution can be taken as the first emission reduction contribution; then the first emission reduction contribution can be divided by the emission reduction amount to obtain the first emission reduction improvement amount. The first emission reduction improvement amount is the contribution of the unit emission reduction amount of the pollution source to the pollutant concentration, and it is the unit improvement amount.

[0148] Through the above technical solutions, the air quality model can simulate the first contribution of the emission amount of the first precursor of the pollutant emitted by the pollution source in the target area before emission reduction to the pollutant concentration, and the second contribution of the emission amount of the first precursor of the pollutant emitted by the pollution source in the target area after emission reduction to the pollutant concentration. This allows the model to obtain the first emission reduction improvement amount of each pollution source to the pollutant concentration under the current emission reduction scenario. Then, based on the magnitude of each first emission reduction improvement amount, the emission amount of the first precursor emitted by each pollution source is adjusted, thereby adjusting the emission reduction amount of the first precursor emitted by each pollution source to obtain the target emission reduction list that promotes the reduction of pollutant concentration.

[0149] Figure 9 An exemplary scheme for obtaining the second emission reduction improvement in step S30 above is shown, which includes the following steps (1) to (3): (1) The first total emission inventory, the third industry inventory and the third background inventory are processed into grids to obtain the first total grid emission inventory, the third grid industry inventory and the third grid background inventory. The third total emission inventory, the fourth industry inventory and the fourth background inventory are processed into grids to obtain the third total grid inventory, the fourth grid industry inventory and the fourth grid background inventory.

[0150] Pollution source treatment software can be used to perform grid processing on the first total emission inventory and the third total emission inventory to obtain the first total grid emission inventory and the third total grid inventory. The first total grid emission inventory contains the emission amount of precursors emitted by pollution sources in each grid of the target area before emission reduction, and the third total grid inventory contains the emission amount of precursors emitted by pollution sources in each grid of the target area after emission reduction.

[0151] Pollution source treatment software can be used to perform grid-based processing on the third and fourth industry lists to obtain the third grid industry list and the fourth grid industry list. The third grid industry list contains the emissions of second precursors emitted by pollution sources in the target area before emission reduction, and the fourth grid industry list contains the emissions of second precursors emitted by pollution sources in the target area after emission reduction.

[0152] Pollution source treatment software can be used to grid the third and fourth background lists to obtain the third grid background list and the fourth grid background list. The third grid background list and the fourth grid background list are the same, both of which contain the emission amounts of non-second precursors emitted by pollution sources that emit non-second precursors in the grid of the target area.

[0153] (2) Input the first total grid emission inventory, the third grid industry inventory, the third grid background inventory, the third total grid inventory, the fourth grid industry inventory and the fourth grid background inventory into the air quality model to obtain the third contribution of the second precursors emitted before emission reduction and the fourth contribution of the first precursors emitted after emission reduction in the target area.

[0154] After inputting the first grid emission inventory, the third grid industry inventory, and the third grid background inventory into the air quality model, the air quality model can obtain the third contribution of the emission amount of the second precursor of each pollution source emitting the second precursor to the pollutant concentration before emission reduction in the target area.

[0155] The air quality model can locate the position of each pollution source emitting second precursors in the target area and the emission amount of each pollution source before emission reduction based on the third grid industry list, thus uniquely locating the emission amount of second precursors emitted by the pollution source before emission reduction; based on the third grid background list, the interaction relationship between the emission amount of second precursors and other non-second precursors can be analyzed, thus obtaining a more accurate third contribution before emission reduction.

[0156] After inputting the third general grid list, the fourth grid industry list, and the fourth grid background list into the air quality model, the air quality model can obtain the fourth contribution of the emission amount of the second precursor of each pollution source emitting the second precursor to the pollutant concentration in the target area after emission reduction.

[0157] The air quality model can locate the position of each pollution source emitting second precursors in the target area and the emission amount of each pollution source after emission reduction based on the fourth grid industry list, thus uniquely locating the emission amount of second precursors emitted by the pollution source after emission reduction. Based on the fourth grid background list, the interaction relationship between the emission amount of second precursors and other non-second precursors can be analyzed, thus obtaining a more accurate fourth contribution amount after emission reduction.

[0158] In addition to inputting the above grid list into the air quality model, the second grid marker file and the meteorological background field of the target area can also be input into the air quality model to obtain the third and fourth contributions before and after emission reduction.

[0159] (3) Based on the third and fourth contribution amounts, the second emission reduction improvement amount is obtained.

[0160] The difference between the third and fourth contributions can be used as the second emission reduction improvement.

[0161] Optionally, the third and fourth contributions can be used as the second emission reduction contribution; and the second emission reduction improvement can be obtained based on the second emission reduction contribution and the emission reduction amount.

[0162] For example, the difference between the third and fourth contributions can be used as the second emission reduction contribution; then the second emission reduction contribution can be divided by the emission reduction amount to obtain the second emission reduction improvement amount. The second emission reduction improvement amount is the contribution of the unit emission reduction amount of the pollution source to the pollutant concentration, and it is the unit improvement amount.

[0163] Through the above technical solutions, the air quality model can simulate the third contribution of the emission amount of the second precursor of the pollutant to the pollutant concentration before emission reduction by the pollution source emitting the second precursor in the target area, and the fourth contribution of the emission amount of the second precursor of the pollutant to the pollutant concentration after emission reduction by the pollution source emitting the second precursor in the target area. Thus, the second emission reduction improvement amount of each pollution source to the pollutant concentration under the current emission reduction scenario is obtained. Then, based on the magnitude of each second emission reduction improvement amount, the emission amount of the second precursor emitted by each pollution source is adjusted, thereby adjusting the emission reduction amount of the second precursor emitted by each pollution source to obtain the target emission reduction list that promotes the reduction of pollutant concentration.

[0164] In one exemplary embodiment, this disclosure provides a computer program product comprising a computer program executable by a processor, which, when executed by the processor, implements the steps of the method for determining the target emission reduction inventory described above.

Claims

1. A method for determining a target emission reduction inventory, characterized in that, include: Based on the first total emission inventory, the first industry inventory, and the first background inventory of the target area before emission reduction, and the second total emission inventory, the second industry inventory, and the second background inventory of the target area after emission reduction, the first emission reduction improvement amount of the first precursor of the pollution source emissions in the target area is obtained; Both the first industry list and the second industry list include the emission amount of the first precursor among multiple precursors emitted by pollution sources in the target area, and both the first background list and the second background list include the emission amount of non-first precursors among the multiple precursors, wherein the multiple precursors are precursors of pollutants; The first emission reduction improvement indicates the degree of reduction in the contribution of the first precursor emitted by the pollution sources in the target area to the pollutants; The emissions of the first precursor in the second total emission inventory are updated based on the first emission reduction improvement amount to obtain the third total emission inventory; Based on the first total emission inventory, the third industry inventory, and the third background inventory before emission reduction in the target area, and the third total emission inventory, the fourth industry inventory, and the fourth background inventory after emission reduction in the target area, the second emission reduction improvement amount of the second precursors emitted by the pollution sources in the target area is obtained; Both the third industry list and the fourth industry list include the emissions of the second precursor among the plurality of precursors, and both the third background list and the fourth background list include the emissions of non-second precursors among the plurality of precursors; the second emission reduction improvement amount indicates the degree of reduction in the contribution of the second precursor emitted by the pollution sources in the target area to the pollutants; The second precursor includes precursors that have a non-linear relationship with the pollutant; The emissions of the second precursor in the third total emission inventory are updated based on the second emission reduction improvement amount to obtain the fourth total emission inventory; Based on the first total emission inventory and the fourth total emission inventory, a target emission reduction inventory is obtained; the target emission reduction inventory indicates the emission reduction amount of pollution sources in the target area.

2. The method according to claim 1, characterized in that, The first precursor and the second precursor have at least one of the following relationships: The first precursor is a first preset precursor, and the corresponding second precursor is the first preset precursor and the second preset precursor; The first precursor is the first preset precursor, and the corresponding second precursor is the second preset precursor; The first precursor is the first preset precursor and the second preset precursor, and the corresponding second precursor is the second preset precursor.

3. The method according to claim 1, characterized in that, The step of obtaining the first emission reduction improvement of the first precursor of pollution sources in the target area based on the first total emission inventory, the first industry inventory, and the first background inventory before emission reduction in the target area, and the second total emission inventory, the second industry inventory, and the second background inventory after emission reduction in the target area, includes: The first total emission inventory, the first industry inventory, and the first background inventory are processed into a grid to obtain a first total grid emission inventory, a first grid industry inventory, and a first grid background inventory. The second total emission inventory, the second industry inventory, and the second background inventory are processed into a grid to obtain a second total grid emission inventory, a second grid industry inventory, and a second grid background inventory. The first total grid emission inventory, the first grid industry inventory, the first grid background inventory, the second total grid emission inventory, the second grid industry inventory, and the second grid background inventory are input into the air quality model to obtain the first contribution of the first precursor emitted before emission reduction and the second contribution of the first precursor emitted after emission reduction in the target area. The first emission reduction improvement is obtained based on the first contribution and the second contribution.

4. The method according to claim 3, characterized in that, The step of obtaining the first emission reduction improvement based on the first contribution and the second contribution includes: The first emission reduction contribution is obtained based on the first contribution and the second contribution. The first emission reduction improvement amount is obtained based on the first emission reduction contribution and the emission reduction amount.

5. The method according to claim 1, characterized in that, The target region comprises multiple grids; the method further includes: Based on the first overall emission inventory, multiple pollution sources in the first target grid are respectively divided into multiple different industry inventories to obtain the first industry inventory; and / or, According to the second total emission inventory, multiple pollution sources in the first target grid are respectively divided into multiple different industry lists to obtain the second industry list; the first target grid is the grid where the pollution source emitting the first precursor is located in the multiple grids.

6. The method according to claim 1, characterized in that, The method further includes: The first industry list is obtained by removing the first industry list from the first total emission list; and / or; The second background list is obtained by removing the second industry list from the second total emissions list.

7. The method according to claim 1, characterized in that, The method further includes: The second total emission inventory is obtained based on the first total emission inventory and the original emission reduction inventory.

8. The method according to claim 1, characterized in that, The step of updating the emissions of the first precursor in the second total emission inventory based on the first emission reduction improvement to obtain the third total emission inventory includes: If the first emission reduction improvement of the first precursor emitted by the first pollution source in the second total emission inventory is less than a first preset value, the emission amount of the first precursor emitted by the first pollution source in the second total emission inventory is increased to obtain the third total emission inventory; and / or, If the first emission reduction improvement of the first precursor emitted by the second pollution source in the second total emission inventory is greater than the second preset value, the emission of the first precursor emitted by the second pollution source in the second total emission inventory is reduced to obtain the third total emission inventory.

9. The method according to claim 1, characterized in that, The step of updating the emissions of the second precursor in the third total emission inventory based on the second emission reduction improvement to obtain a fourth total emission inventory includes: If the emission of the second precursor from a third pollution source in the third total emission inventory causes an increase in the pollutant concentration, the emission of the second precursor from the third pollution source in the third total emission inventory shall be increased; and / or, If the emission of the second precursor from the fourth pollution source in the third total emission inventory reduces the pollutant concentration, the emission of the second precursor from the fourth pollution source in the third total emission inventory shall be reduced.

10. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the steps of the method according to any one of claims 1-9.

Images