Regional pollutant emission full-list accounting method

Abstract

The invention, which belongs to the pollutant monitoring field, discloses a regional pollutant emission full-list accounting method comprising the following steps: constructing a regional pollutant emission full-list accounting method system according to the regional pollutant full-list accounting range and boundary and pollutant accounting mode classification; establishing a regional full-list accounting method based on the constructed regional pollutant emission full-list accounting method system; updating the regional full-list accounting method based on the selected reference accounting parameter change, the pollutant discharge total amount change and the single-source pollutant change; and deploying the updated regional full-list accounting method in a computer accounting system for execution. According to the method, on the basis of entry of activity level information of various data sources such as emission source statistics and pollution discharge licenses, automatic accounting of the emission amount can be achieved according to emission amount accounting methods of different priorities and selection of factors in an emission factor library. And outputting results according to the selected classification.

Description

Technical Field

[0001] The present invention relates to the field of pollutant monitoring, and in particular to a method for calculating a complete inventory of regional pollutant emissions. Background Art

[0002] In the regional ecological environment management decision-making technical system, building an accurate, complete and dynamically updated pollutant emission accounting method is the core support for carrying out various quality management tasks at the city level. The full list of regional pollutants has a wide coverage: including industrial sources, domestic sources, agricultural sources, waste treatment sources, mobile sources, dust sources, and other sources (plant sources, biomass combustion sources) in the region, a total of seven first-level source items and 52 second-level source items. Detailed classification: mobile accounting can reach 7 levels of classification, and other source items can also reach 3-4 levels. There are many pollutants, including sulfur dioxide (SO2), nitrogen oxides (NOx), inhalable particulate matter (PM10), fine particulate matter (PM2.5), volatile organic compounds (VOCs), ammonia (NH3), carbon monoxide (CO), organic carbon (OC), and black carbon (BC). Water pollutants include chemical oxygen demand (COD), ammonia nitrogen (NH3-N), total nitrogen (TN), and total phosphorus (TP). The activity level of point sources in the emission inventory is mainly derived from the annual implementation report of the pollutant discharge permit, pollution source management and typical survey data, while the activity level of non-point sources is mainly derived from macro data provided by the municipal statistics, water affairs, agriculture and rural areas, railways, public security and traffic management departments; pollutant emissions are calculated using the monitoring method, emission factor method or material balance method. The data source and emission factor for each subdivided source item are different.

[0003] The accuracy of the full inventory is mainly determined by the accuracy of the data source and the accuracy of the localized emission factors. Since 2013, after 11 years of data accumulation, selection and correction, the localization of factors of each source item has been studied to replace industry factors, and the current full inventory accounting and updating methods have been gradually formed.

[0004] Due to the wide coverage of the full inventory, the large number of source items, and the large differences in data sources, it is impossible for an individual to complete the calculation of multiple source items and then merge the data to form the full inventory result data. At present, the calculation frequency of the full inventory has reached quarterly, and the workload of calculation, summary, and verification is huge. Therefore, the full inventory accounting system for pollutant emissions in this area is established. Achieve rapid and accurate calculation of the full inventory of pollutants and provide data support for environmental management. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a method for calculating a complete inventory of regional pollutant emissions.

[0006] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0007] A method for calculating a regional pollutant emission inventory includes the following steps:

[0008] S1. Construct a regional pollutant emission inventory accounting method system based on the accounting scope and boundaries of the regional pollutant inventory and the classification of pollutant accounting methods;

[0009] S2. Establish a regional full inventory accounting method based on the constructed regional pollutant emission full inventory accounting method system;

[0010] S3. Select the baseline accounting parameters and update the regional full inventory accounting method based on changes in the selected baseline accounting parameters, changes in total pollutant emissions, and changes in single source pollutants;

[0011] S4. Deploy the updated regional full inventory accounting method in the computer accounting system, and import activity level data, emission data and atmospheric pollutant emission concentration data into the computer accounting system to calculate the emissions of inventory pollutants.

[0012] Furthermore, the accounting scope and boundaries of the regional pollutant inventory in S1 include industrial sources, domestic sources, agricultural sources, waste treatment sources, mobile sources, dust sources, plant sources and biomass combustion sources within the region;

[0013] The pollutants in S1 include sulfur dioxide, nitrogen oxides, inhalable particulate matter, fine particulate matter, volatile organic matter, ammonia, carbon monoxide, organic carbon, black carbon and water pollutants.

[0014] Furthermore, the calculation method of the regional full inventory in S2 is specifically expressed as follows:

[0015]

[0016] Where i is the pollutant number, E i is the emission of the i-th type of pollutant in the regional full inventory accounting period, A j is the activity level data of the i-th pollutant in the j-th source period, EF j is the emission factor of the i-th pollutant from the j-th source item.

[0017] Furthermore, the specific method of updating the calculation method in S3 is:

[0018] S31. For pollutant accounting with online monitoring facilities, the pollutant emissions from online monitoring are used as data updates; for industrial enterprises without activity level data, the baseline full inventory emissions are used as the basis, and the change rate between the key enterprises in the industry in which the enterprise is located and the baseline full inventory is used as the full inventory accounting change rate of the enterprise to calculate the current pollutant emissions of the enterprise;

[0019] S32. When the trend of changes in the monitored concentrations of major pollutants, the trend of changes in the total amount of pollutants in the regional inventory, and the trend of changes in the emission of pollutants from a single source are all downward trends; for pollutants calculated using the emission factor method, the emission factor coefficient method shall be used to update the accounting method;

[0020] S33. When the trend of changes in the monitored concentrations of major pollutants is flat or decreasing, the trend of changes in the total amount of pollutants in the regional inventory is flat or decreasing, and the trend of changes in the emissions of pollutants from a single source item is increasing, the emission correction coefficient method shall be used to update the accounting method for pollutants with an increasing trend in emissions of pollutants from a single source item;

[0021] S34. When the trend of changes in the monitored concentrations of major pollutants increases; the trend of changes in the overall total amount of pollutants in the regional inventory remains unchanged or increases, and the trend of changes in the emissions of pollutants from single sources remains unchanged or increases, the emission factor update coefficient method shall be used to update the accounting method for pollutants with an increasing trend in monitored concentrations.

[0022] Furthermore, the specific method of updating the calculation method using the emission factor coefficient method in S32 is:

[0023]

[0024] In the formula, E i is the emission of the i-th type of pollutant in the regional full inventory accounting period, EF i is the emission factor of the i-th type of pollutant, A i is the activity level data of the pollutant accounting period of type i, is the emission factor update coefficient, C i is the pollutant concentration of the month released by the monitoring center when calculating the pollutant this time, C j is the pollutant concentration of the jth source item in the benchmark full inventory accounting for the month, EA is the total value of the benchmark accounting of the pollutant full inventory, and EAa is the subtotal value of the source item in the benchmark accounting of the pollutant full inventory.

[0025] Furthermore, the specific method of updating the calculation method using the volume correction coefficient method in S33 is:

[0026]

[0027] In the formula, E i is the emission of the i-th type of pollutant in the regional full inventory accounting period, EF j is the emission factor of the i-th pollutant of the j-th source item, A i is the activity level data of the pollutant accounting period of type i, is the emission correction factor, A jis the activity level data of the i-th pollutant for the j-th source item during the accounting period, EA is the total value of the full pollutant inventory benchmark accounting, and EAa is the subtotal value of the source item in the full pollutant inventory benchmark accounting.

[0028] Furthermore, the specific method of updating the calculation method using the emission factor updating coefficient method in S34 is:

[0029]

[0030] In the formula, E i is the emission of the i-th type of pollutant in the regional full inventory accounting period, EF i is the emission factor of the i-th type of pollutant, A i is the activity level data of the pollutant accounting period of type i, is the emission factor update coefficient, C i is the pollutant concentration of the month released by the monitoring center when calculating the pollutant this time, C j is the pollutant concentration of the jth source item in the benchmark full inventory accounting for the month, EA is the total value of the benchmark accounting of the pollutant full inventory, and EAa is the subtotal value of the source item in the benchmark accounting of the pollutant full inventory.

[0031] Furthermore, the S4 specifically includes the following steps:

[0032] S41. The system as a whole realizes the functions of embedded accounting logic, built-in accounting parameters, data entry, accounting, verification, and output; stores data by point source, surface source, and line source to form a list data ledger, and realizes the functions of viewing, exporting, and modifying; classifies by accounting parameters, accounting logic, update parameters, data entry data, etc., to realize the custom modification function; embeds the set export table template, and exports the data table as required;

[0033] S42. Collect activity level data and emission data for the latest time period according to source item division of labor, and import activity level data, emission data and atmospheric pollutant emission concentration data into the computer accounting system to calculate inventory pollutant emissions;

[0034] S43. After confirming that the results are correct, export the summary data of the regional full inventory pollutant emissions, the inventory ledger and the preset summary comparison table from the computer accounting system to form the latest regional pollutant emission full inventory accounting results.

[0035] The present invention has the following beneficial effects:

[0036] 1. Integrate the existing full inventory accounting system and update methods, clarify the accounting logic, accounting methods, and accounting parameters of various source items, and record the accounting logic, accounting methods, and accounting parameter optimization process through the system database, compare the differences in accounting results, and form a continuously optimized regional full inventory accounting system.

[0037] 2. Improve accounting efficiency: The system can automatically calculate emissions based on the input of activity level information from various data sources such as emission source statistics and emission permits, according to the emission accounting methods of different priorities and the selection of factors in the emission factor library, and output the results according to the selected classification.

[0038] 3. Automatic verification improves accuracy; the system can realize intelligent verification of data, perform logical judgment on input data, and filter out abnormal data to ensure the credibility of database data. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the flow chart of the method for calculating the complete inventory of regional pollutant emissions of the present invention. DETAILED DESCRIPTION

[0040] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0041] A method for calculating the complete inventory of regional pollutant emissions, such as Figure 1 As shown, the following steps are included:

[0042] S1. Construct a regional pollutant emission inventory accounting method system based on the accounting scope and boundaries of the regional pollutant inventory and the classification of pollutant accounting methods;

[0043] Determine the accounting scope and boundaries of the regional pollutant inventory: including industrial sources, domestic sources, agricultural sources, waste treatment sources, mobile sources, dust sources, and other sources (plant sources, biomass combustion sources) in the region. Determine the pollutants corresponding to each source item: including sulfur dioxide (SO2), nitrogen oxides (NOx), inhalable particulate matter (PM10), fine particulate matter (PM2.5), volatile organic compounds (VOCs), ammonia (NH3), carbon monoxide (CO), organic carbon (OC), and black carbon (BC). Water pollutants include chemical oxygen demand (COD), ammonia nitrogen (NH3-N), total nitrogen (TN), and total phosphorus (TP).

[0044] Determine the classification of accounting methods: point source, surface source, and line source. The main differences are reflected in the spatial distribution method and accounting accuracy. Point source accounting is more accurate, and the longitude and latitude can be accurately displayed on the map. At the same time, there is also a point-by-point requirement for obtaining activity level and emission data. If it is impossible to obtain point source regular data, it will be calculated according to the surface source method, and then calculated according to the point source method when point source data can be obtained. For example, the catering source (second and classification) in the living source can be divided into two three-level classifications of canteens and restaurants. Restaurants can be divided into four-level classifications of barbecue, hot pot, and various cuisines. In the case of being unable to obtain activity level data such as oil consumption and number of diners in each restaurant on a regular basis (annually, quarterly), it can only be calculated according to the surface source. According to the base year (base year of the second pollution census data), the overall trend data of the social catering industry is used to calculate the catering industry emission data according to the surface source as a whole. Line sources mainly refer to mobile sources - motor vehicles, which are distributed on the road according to the traffic volume. The pollutant emissions are calculated based on the vehicle model, emission standards, emission factors of different pollutants, and correction factors such as temperature, humidity, and speed.

[0045] S2. Establish a regional full inventory accounting method based on the constructed regional pollutant emission full inventory accounting method system;

[0046] For pollutant i, the calculation formula for the regional full inventory is:

[0047]

[0048] Where i is the pollutant number, E i is the emission of the i-th type of pollutant in the regional full inventory accounting period, A j is the activity level data of the i-th pollutant in the j-th source period, EF j is the emission factor of the i-th pollutant from the j-th source item.

[0049] For a full inventory of a region in a certain year, the inventory emissions are the sum of the emissions of all sources involved in that year. The emissions of each source item come from the online monitoring data or activity level data and emission factor data of that source item. Online monitoring data is data obtained through real-time monitoring, which can fully reflect the emissions of that year. The activity level data reflects the production activity level of each source item in that year, which is directly related to the emissions. Due to the influence of factors such as statistical caliber and the actual cognitive bias of the person filling out the form on the product type, there will be a certain degree of deviation between the reported activity level and the actual production activity level that affects the pollutant emissions. Overall, the deviation ratio is not large.

[0050] The emission factor is a summary of the source item based on monitoring experience before the year. The emission factors of each source item will change with the development of the industry due to factors such as the improvement of the governance level of the entire source item, the upgrading of end-of-pipe governance equipment, and the promotion of industrial policies. However, it is obviously impossible to re-measure and update the emission factor every year, so the accounting method needs to be updated.

[0051] S3. Select the baseline accounting parameters and update the regional full inventory accounting method based on changes in the selected baseline accounting parameters, changes in total pollutant emissions, and changes in single source pollutants;

[0052] In this embodiment, first determine the baseline regional pollutant emission rights list, the main sources are: the national pollution source emission inventory compilation technical manual, pollution source emission localization research results, various related literature. Determine the calculation method and baseline emission factor for each source item. Collect and review the activity level data and emission data of each source item: obtain data from emission source statistics and pollutant emission permit annual and quarterly reports, internal departments of the Ecological Environment Bureau and various commissions and bureaus, and on-site verification. Compare and screen, review the data accuracy, and finally confirm the source and data collation method of the activity level data and emission data. According to the activity level data, emission data and the accounting method to be selected, calculate the inventory emissions separately, and obtain the inventory emission results under different data and methods. After comparison and screening, as well as repeated comparison and verification for many years. Establish the baseline accounting method and emission factor for the full regional pollutant emission inventory.

[0053] On this basis, the benchmark accounting parameters are selected. The basic principle is to select objective parameters that can reflect the changes in emissions in industrial production, social life, agricultural production, and transportation operation. After 3-5 years of selection, comparison, and verification, the benchmark accounting parameters are set as: air quality data from the Municipal Environmental Monitoring Center, online monitoring data from key industrial enterprises, and emission source statistics.

[0054] The update of the pollutant accounting method for the regional full inventory depends on the changes in the baseline accounting parameters, the changing trend of the total pollutant emissions, and the changing trend of pollutants from a single source.

[0055] Since online data is measured data with small errors, it can reflect the changes in emissions. Therefore, this update method actually focuses on the following three points:

[0056] 1. Air quality data; 2. Trends in the total amount of pollutants in the regional inventory; 3. Trends in the amount of pollutants emitted from a single source.

[0057] When the air quality data, i.e. the change trend of the main pollutant monitoring concentration and the change trend of the overall pollutant amount in the regional full inventory and the change trend of the pollutant emission from a single source are consistent and are all decreasing, the update method is as follows:

[0058] For pollutant accounting with online monitoring facilities, the pollutant emissions monitored online are the emissions of the pollutants;

[0059] For pollutants calculated using the emission factor method: sulfur dioxide (SO2), nitrogen oxides (NOx), inhalable particulate matter (PM10), fine particulate matter (PM2.5), carbon monoxide (CO), organic carbon (OC), black carbon (BC) (organic carbon (OC) and black carbon (BC) are calculated using the proportional coefficient method through fine particulate matter (PM2.5) to calculate pollutant emissions), the emission factor update coefficient method is used to reflect changes in pollutant emission characteristics. The formula is as follows:

[0060]

[0061] In the formula, E i is the emission of the i-th type of pollutant in the regional full inventory accounting period, EF i is the emission factor of the i-th type of pollutant, A i is the activity level data of the pollutant accounting period of type i, is the emission factor update coefficient, C i is the pollutant concentration of the month released by the monitoring center when calculating the pollutant this time, C j is the pollutant concentration of the jth source item in the benchmark full inventory accounting for the month, EA is the total value of the benchmark accounting of the pollutant full inventory, and EAa is the subtotal value of the source item in the benchmark accounting of the pollutant full inventory.

[0062] Regarding the accounting of volatile organic compounds (VOCs) and ammonia (NH3), since the changes in the emissions of the two pollutants are mainly affected by the use of VOCs-containing materials, the use of ammonia water (or ammonia-containing denitrification agent), the amount of livestock manure and other activity levels, the changes in emission factors have little impact. Therefore, the accounting updates of volatile organic compounds (VOCs) and ammonia (NH3) are only related to the activity levels, and the emission factors will not be updated for the time being;

[0063] For industrial enterprises without activity level data, the current pollutant emissions of the enterprise are calculated based on the baseline full inventory emissions and the change rate between the key enterprises in the industry (enterprises with online monitoring data) and the baseline full inventory as the change rate of the enterprise's full inventory.

[0064] The calculation of water pollutants such as chemical oxygen demand (COD), ammonia nitrogen (NH3-N), total nitrogen (TN) and total phosphorus (TP) mainly comes from emission source statistical data, which are updated annually. The data come from enterprise drainage volume and pollutant emission concentration of sewage treatment plants. There are monitoring equipment, and the data are reliable, so there is no need to update the calculation method.

[0065] When the air quality data, i.e. the concentration of major pollutants monitored, is flat or decreasing; the total amount of pollutants in the regional inventory is flat or decreasing, and the emission of pollutants from a single source is increasing, the update method is as follows:

[0066] For pollutant accounting with online monitoring facilities, the pollutant emissions monitored online are the emissions of the pollutants;

[0067] For pollutants with an increasing trend in single source emissions, the activity level must be increasing, and the emission factor is relatively flat or slightly decreasing. The emission correction coefficient method is used to reflect the changes in pollutant emission characteristics. The formula is as follows:

[0068]

[0069] In the formula, E i is the emission of the i-th type of pollutant in the regional full inventory accounting period, EF j is the emission factor of the i-th pollutant of the j-th source item, A i is the activity level data of the pollutant accounting period of type i, is the emission correction factor, A j is the activity level data of the i-th pollutant for the j-th source item during the accounting period, EA is the total value of the full pollutant inventory benchmark accounting, and EAa is the subtotal value of the source item in the full pollutant inventory benchmark accounting.

[0070] For the calculation of volatile organic compounds (VOCs) and ammonia (NH3), the main factors affecting the changes in the emissions of the two pollutants are the use of VOCs-containing materials, the use of ammonia water (or ammonia-containing denitrification agent), the amount of livestock manure and other activity levels, and the changes in emission factors have little impact. Therefore, the accounting updates of volatile organic compounds (VOCs) and ammonia (NH3) are only related to the activity level, and no emission correction is made;

[0071] For industrial enterprises without activity level data, the current pollutant emissions of the enterprise are calculated based on the baseline full inventory emissions and the change rate between the key enterprises in the industry (enterprises with online monitoring data) and the baseline full inventory as the change rate of the enterprise's full inventory.

[0072] The calculation of water pollutants such as chemical oxygen demand (COD), ammonia nitrogen (NH3-N), total nitrogen (TN) and total phosphorus (TP) mainly comes from emission source statistical data, which are updated annually. The data come from enterprise drainage volume and pollutant emission concentration of sewage treatment plants. There are monitoring equipment, and the data are reliable, so there is no need to update the calculation method.

[0073] When the air quality data, i.e. the concentration of major pollutants monitored, shows an upward trend; the overall total amount of pollutants in the regional inventory shows a flat or upward trend; and the single source pollutant emissions show a flat or upward trend, the update method is as follows:

[0074] For pollutant accounting with online monitoring facilities, the pollutant emissions monitored online are the emissions of the pollutants;

[0075] For pollutants with increasing concentration trends: the emission factor update coefficient method is used to reflect the changes in pollutant emission characteristics. The formula is as follows:

[0076]

[0077] In the formula, E i is the emission of the i-th type of pollutant in the regional full inventory accounting period, EF i is the emission factor of the i-th type of pollutant, A i is the activity level data of the pollutant accounting period of type i, is the emission factor update coefficient, C i is the pollutant concentration of the month released by the monitoring center when calculating the pollutant this time, C j is the pollutant concentration of the jth source item in the benchmark full inventory accounting for the month, EA is the total value of the benchmark accounting of the pollutant full inventory, and EAa is the subtotal value of the source item in the benchmark accounting of the pollutant full inventory.

[0078] For the accounting of volatile organic compounds (VOCs) and ammonia (NH3), since the main factors affecting the changes in the emissions of the two pollutants are the use of VOCs-containing materials, the use of ammonia water (or ammonia-containing denitrification agent), the amount of livestock manure and other activity levels, the changes in emission factors have little impact. Therefore, the accounting updates of volatile organic compounds (VOCs) and ammonia (NH3) are only related to the activity level, and no emission correction is made;

[0079] For industrial enterprises without activity level data, the current pollutant emissions of the enterprise are calculated based on the baseline full inventory emissions and the change rate between the key enterprises in the industry (enterprises with online monitoring data) and the baseline full inventory as the change rate of the enterprise's full inventory.

[0080] The calculation of water pollutants such as chemical oxygen demand (COD), ammonia nitrogen (NH3-N), total nitrogen (TN), and total phosphorus (TP) mainly comes from emission source statistics, which are updated annually. The data comes from the discharge volume of enterprises and the pollutant discharge concentration of sewage plants. There are monitoring equipment, and the data is reliable, so there is no need to update the calculation method.

[0081] For air quality data, namely, the changing trends of the monitored concentrations of major pollutants; the changing trends of the overall total amount of pollutants in the regional full inventory, and the changing trends of pollutant emissions from single sources, other combinations of situations have not yet occurred. If they occur, no corrections will be made for the time being, and pollutant emissions will be calculated based on the new activity level and original emission factors.

[0082] S4. Deploy the updated regional full inventory accounting method in the computer accounting system, and import activity level data, emission data and atmospheric pollutant emission concentration data into the computer accounting system to calculate the emissions of inventory pollutants.

[0083] In this embodiment, the following steps are specifically included:

[0084] S41. The system as a whole realizes the functions of embedded accounting logic, built-in accounting parameters, data entry, accounting, verification, and output; stores data by point source, surface source, and line source to form a list data ledger, and realizes the functions of viewing, exporting, and modifying; classifies by accounting parameters, accounting logic, update parameters, data entry data, etc., to realize the custom modification function; embeds the set export table template, and exports the data table as required;

[0085] S42. Collect activity level data and emission data for the latest time period according to source item division of labor, and import activity level data, emission data and atmospheric pollutant emission concentration data into the computer accounting system to calculate inventory pollutant emissions;

[0086] S43. After confirming that the results are correct, export the summary data of the regional full inventory pollutant emissions, the inventory ledger and the preset summary comparison table from the computer accounting system to form the latest regional pollutant emission full inventory accounting results.

[0087] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

[0088] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations that do not deviate from the essence of the present invention based on the technical revelations disclosed by the present invention, and these variations and combinations are still within the protection scope of the present invention.

Claims

1. A method for calculating a regional pollutant emission inventory, characterized in that: The steps include: S1. Construct a regional pollutant emission inventory accounting method system based on the regional pollutant inventory accounting scope and boundaries and the classification of pollutant accounting methods; S2. Establish a regional full inventory accounting method based on the constructed regional pollutant emission full inventory accounting method system; S3. Select the baseline accounting parameters and update the regional full inventory accounting method based on changes in the selected baseline accounting parameters, changes in total pollutant emissions, and changes in single source pollutants; S4. Deploy the updated regional full inventory accounting method in the computer accounting system, and import activity level data, emission data and atmospheric pollutant emission concentration data into the computer accounting system to calculate the emissions of inventory pollutants.

2. According to claim 1, a method for calculating a regional pollutant emission inventory is characterized in that: The accounting scope and boundaries of the regional pollutant inventory in S1 include industrial sources, domestic sources, agricultural sources, waste treatment sources, mobile sources, dust sources, plant sources and biomass combustion sources within the region; The pollutants in S1 include sulfur dioxide, nitrogen oxides, inhalable particulate matter, fine particulate matter, volatile organic matter, ammonia, carbon monoxide, organic carbon, black carbon and water pollutants.

3. According to claim 1, a method for calculating a regional pollutant emission inventory is characterized in that: The calculation method of the regional full inventory in S2 is specifically expressed as follows: Where i is the pollutant number, E i is the emission of the i-th type of pollutant in the regional full inventory accounting period, A j is the activity level data of the i-th pollutant in the j-th source period, EF j is the emission factor of the i-th pollutant from the j-th source item.

4. According to claim 1, a method for calculating a regional pollutant emission inventory is characterized in that: The specific method of updating the calculation method in S3 is: S31. For pollutant accounting with online monitoring facilities, the pollutant emissions from online monitoring are used as data updates; for industrial enterprises without activity level data, the baseline full inventory emissions are used as the basis, and the change rate between the key enterprises in the industry in which the enterprise is located and the baseline full inventory is used as the full inventory accounting change rate of the enterprise to calculate the current pollutant emissions of the enterprise; S32. When the trend of changes in the monitored concentrations of major pollutants, the trend of changes in the total amount of pollutants in the regional inventory, and the trend of changes in the emission of pollutants from a single source are all downward trends; for pollutants calculated using the emission factor method, the emission factor coefficient method shall be used to update the accounting method; S33. When the trend of changes in the monitored concentrations of major pollutants is flat or decreasing, the trend of changes in the total amount of pollutants in the regional inventory is flat or decreasing, and the trend of changes in the emissions of pollutants from a single source item is increasing, the emission correction coefficient method shall be used to update the accounting method for pollutants with an increasing trend in emissions of pollutants from a single source item; S34. When the trend of changes in the monitored concentrations of major pollutants increases; the trend of changes in the overall total amount of pollutants in the regional inventory remains unchanged or increases, and the trend of changes in the emissions of pollutants from single sources remains unchanged or increases, the emission factor update coefficient method shall be used to update the accounting method for pollutants with an increasing trend in monitored concentrations.

5. According to claim 4, a method for calculating a regional pollutant emission inventory is characterized in that: The specific method of updating the calculation method using the emission factor coefficient method in S32 is: In the formula, E i is the emission of the i-th type of pollutant in the regional full inventory accounting period, EF i is the emission factor of the i-th type of pollutant, A i is the activity level data of the pollutant accounting period of type i, is the emission factor update coefficient, C i is the pollutant concentration of the month released by the monitoring center when calculating the pollutant this time, C j is the pollutant concentration of the jth source item in the benchmark full inventory accounting for the month, EA is the total value of the benchmark accounting of the pollutant full inventory, and EAa is the subtotal value of the source item in the benchmark accounting of the pollutant full inventory.

6. According to claim 4, a method for calculating a regional pollutant emission inventory is characterized in that: The specific method of updating the calculation method using the volume correction coefficient method in S33 is: In the formula, E i is the emission of the i-th type of pollutant in the regional full inventory accounting period, EF j is the emission factor of the i-th pollutant of the j-th source item, A i is the activity level data of the pollutant accounting period of type i, is the emission correction factor, A j is the activity level data of the i-th pollutant for the j-th source item during the accounting period, EA is the total value of the full pollutant inventory benchmark accounting, and EAa is the subtotal value of the source item in the full pollutant inventory benchmark accounting.

7. A method for calculating a regional pollutant emission inventory according to claim 4, characterized in that: The specific method of updating the calculation method using the emission factor updating coefficient method in S34 is: In the formula, E i is the emission of the i-th type of pollutant in the regional full inventory accounting period, EF i is the emission factor of the i-th type of pollutant, A i is the activity level data of the pollutant accounting period of type i, is the emission factor update coefficient, C i is the pollutant concentration of the month released by the monitoring center when calculating the pollutant this time, C j is the pollutant concentration of the jth source item in the benchmark full inventory accounting for the month, EA is the total value of the benchmark accounting of the pollutant full inventory, and EAa is the subtotal value of the source item in the benchmark accounting of the pollutant full inventory.

8. According to claim 1, a method for calculating a regional pollutant emission inventory is characterized in that: The S4 specifically includes the following steps: S41. The system as a whole realizes the functions of embedded accounting logic, built-in accounting parameters, data entry, accounting, verification, and output; stores data by point source, surface source, and line source to form a list data ledger, and realizes the functions of viewing, exporting, and modifying; classifies by accounting parameters, accounting logic, update parameters, data entry data, etc., to realize the custom modification function; embeds the set export table template, and exports the data table as required; S42. Collect activity level data and emission data for the latest time period according to source item division of labor, and import activity level data, emission data and atmospheric pollutant emission concentration data into the computer accounting system to calculate inventory pollutant emissions; S43. After confirming that the results are correct, export the summary data of the regional full inventory pollutant emissions, the inventory ledger and the preset summary comparison table from the computer accounting system to form the latest regional pollutant emission full inventory accounting results.

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