Park atmospheric pollutant total amount accounting method

Abstract

The invention discloses a park atmospheric pollutant total amount accounting method. The method comprises the steps of S1, distinguishing enterprise types; enterprises are divided into A-class enterprises, B-class enterprises and C-class enterprises; s2, determining an accounting method; s3, total amount accounting is carried out; summation is carried out on the pollutant emissions obtained through accounting of the A-type enterprises, the B-type enterprises and the C-type enterprises, and a total amount accounting result is obtained; according to the method, enterprise types are scientifically distinguished, a clear distinguishing mode is set for enterprises with different data bases, and a differentiated accounting method is matched, so that the accounting precision and feasibility are effectively balanced, the problem of underestimation or overestimation caused by uneven enterprise data in the accounting process is solved, and the accounting efficiency is improved. And reliable data support is provided for precise pollution control.

Description

Technical Field

[0001] The present invention relates to the technical field of pollution accounting, and particularly to a method for total amount accounting of atmospheric pollutants in a park. Background Art

[0002] Enterprise parks, as an important part of the development of modern industry, will generate a large amount of pollutants during the production process. Existing power enterprises and chemical enterprise parks are atmospheric pollutants, especially pollutants such as sulfur dioxide, nitrogen oxides, particulate matter, and volatile organic compounds (VOCs); the emissions of atmospheric pollutants are large, which have a serious impact on the environment and human health.

[0003] Therefore, it is particularly important to conduct a total amount accounting of atmospheric pollutants in chemical enterprise parks. Total amount accounting refers to dynamically accounting the pollutant emissions of all links and all calibers of an enterprise based on the real-time production process of the enterprise. The purpose of total amount accounting is to determine the pollutant load that the atmosphere can accommodate within a certain period of time, usually calculated based on the concentration or total amount of specified atmospheric pollutants, which is of great significance for formulating environmental protection policies and implementing ecological environmental protection.

[0004] Currently, the current situation of total amount accounting of atmospheric pollutants in chemical enterprise parks is that although there are relatively complete accounting methods and standards, such as the material balance method, on-line monitoring direct measurement method, pollutant discharge coefficient method, etc., many challenges are still faced in actual operation. On the one hand, there are various accounting methods, it is difficult to unify the accounting standards, there are various types of pollution sources, a large number of them, and the emission concentrations are different, resulting in a large and complex accounting workload; on the other hand, the operation data of some enterprises are inaccurate and it is difficult to correctly calculate their emissions, increasing the difficulty of accounting. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a method for total amount accounting of atmospheric pollutants in a park, which provides a clear calculation method for accounting, enables the accounting to accurately reflect the actual situation, and improves the credibility of the accounting.

[0006] A method for total amount accounting of atmospheric pollutants in a park includes the following steps:

[0007] S1. Distinguish the types of enterprises;

[0008] Collect the pollution emission information of enterprises in the park, and classify the enterprises into Class A enterprises, Class B enterprises, and Class C enterprises according to the pollution emission information; the pollution emission information includes pollution emission links, types of pollutants discharged, completeness of the actual measurement coverage range of pollutants and the actual measurement coverage range, standardization of the actual measurement data of pollutants and the actual measurement data, feasibility of the actual measurement results of pollutants and the actual measurement results, activity level data, and clarity of the activity level data;

[0009] Among them, the measured coverage range in Class A enterprises is complete, the measured data is standardized, and the measured results are feasible;

[0010] The measured coverage range in Class B enterprises is incomplete and / or the measured data is not standardized and / or the measured results are not feasible, and the activity level data is clear;

[0011] The measured coverage range in Class C enterprises is incomplete and / or the measured data is not standardized and / or the measured results are not feasible, and the activity level data is not clear;

[0012] S2. Determine the accounting method;

[0013] Class A enterprises use the actual measurement method for accounting; Class B enterprises use the production pollution discharge coefficient method for accounting; Class C enterprises use the production pollution discharge coefficient method and / or the material balance method and / or the modified simulation method for calculation and accounting; the modified simulation method is a method for obtaining the pollutant emissions by modifying and simulating the production emission process of Class C enterprises;

[0014] S3. Total amount accounting;

[0015] Sum up the pollutant emissions calculated for Class A enterprises, Class B enterprises, and Class C enterprises to obtain the total amount accounting result.

[0016] Note: The above method scientifically distinguishes enterprise types, sets clear differentiation methods for enterprises with different data bases, and matches differentiated accounting methods, which not only ensures the accuracy of the accounting results of high-data-quality enterprises, but also makes up for the information gaps of low-data-quality enterprises through flexible methods, and realizes the comprehensive coverage of the total pollutant emissions in the park through total amount summation. This method effectively balances the accounting accuracy and feasibility, solves the problems of underestimation or overestimation caused by uneven enterprise data in the accounting process, and provides reliable data support for precise pollution control.

[0017] Furthermore, in S2, when the pollution discharge links in Class C enterprises are clear but the material input and output data cannot be obtained, the production pollution discharge coefficient method is used for accounting; when the pollution discharge links in Class C enterprises are clear and the material input and output data can be obtained, the material balance method is used (usually used in accounting for SO2 emissions from fixed combustion sources and VOCs emissions from solvent use sources), otherwise, the modified simulation method is used for accounting.

[0018] Description: For the complex situation of incomplete data of Class C enterprises, according to the clarity of pollution emission links, the clarity of pollutant types, and the data basis, the most suitable accounting method is dynamically matched. Specifically, when the data is sufficient, the objective coefficient method is preferentially used; when the data is fuzzy but the material flow can be traced, the conservation principle is used for calculation; when the data is severely missing, model simulation is relied on to make up for the deficiency. The above methods can maximize the use of limited data to improve the rationality of accounting, and at the same time clarify the applicable boundaries of the methods through conditional judgment, enhancing the interpretability of the accounting process and the credibility of the results.

[0019] Further, in S1, the method for judging the completeness of the actual measurement coverage of pollutants is as follows: Determine whether all facilities and processes that generate pollutants are monitored during the actual measurement, and whether the setting of the monitoring location can represent the true emissions of the emission source; when all facilities and processes that generate pollutants are monitored during the actual measurement and the setting of the monitoring location can represent the true emissions of the emission source, it is judged that the actual measurement coverage of pollutants is complete; otherwise, the actual measurement coverage is incomplete.

[0020] Description: By clarifying the judgment criteria for the "completeness of actual measurement coverage", it provides an objective and operable basis for evaluating the monitoring quality of enterprises, and can avoid underestimation of emissions caused by missing key links and eliminate data distortion caused by unreasonable setting of monitoring locations.

[0021] Further, in S1, the method for judging the feasibility of the actual measurement results is as follows: For a certain pollutant, first use the actual measurement method to calculate the first emission amount, and then use the production and pollutant discharge coefficient method to calculate the second emission amount. When the ratio of the first emission amount to the second emission amount is within the range of [0.8, 1.5], the actual measurement results are considered feasible; otherwise, the actual measurement results are considered infeasible.

[0022] Description: The above method cross-verifies by comparing the calculation results of the actual measurement method and the production and pollutant discharge coefficient method, and then tests the rationality and reliability of the actual measurement data, providing a credible basis for subsequent classification accounting.

[0023] Further, the method for judging the clarity of activity level data is as follows: When the obtained data has complete and traceable original records, the time and space coverage matches the accounting requirements, the measurement method complies with the specifications, and the multi-source data matches, the activity level data is considered clear; otherwise, the activity level data is considered unclear.

[0024] Further, in S2, the method for calculating by the actual measurement method is shown in Formulas (1) and (2);

[0025]

[0026] Where: M jFor the actual emissions of pollutants from the j-th emission outlet during the accounting period, the unit is t; c i is the measured average emission concentration of pollutants from the j-th emission outlet at the i-th hour, and the unit is mg / m 3 ; q i is the exhaust gas volume of the j-th emission outlet at the i-th hour, and the unit is m 3 / h; T is the pollutant emission time during the accounting period, and the unit is h; E is the pollutant emissions during the accounting period, and the unit is t; m is the number of exhaust gas emission outlets, and the unit is piece.

[0027] Note: The above formula can calculate the total pollutant emissions.

[0028] Furthermore, the method of accounting using the production and pollutant discharge coefficient method includes:

[0029] Determine the accounting formula according to the pollution source items of pollutants; the pollutant emissions are the sum of the emissions of each pollution source item; the pollution source items include combustion process, production process, use of industrial anti-corrosion coatings, storage and loading of volatile organic liquids, and static and dynamic sealing points of equipment;

[0030] The accounting methods for the combustion process and production process are as shown in formula (3):

[0031] E = A × k × (1 - η × γ) (3)

[0032] In formula (3), E is the annual pollutant emissions during the accounting period, and the unit is t; A is the fuel consumption during the accounting period, and the unit is ton or ten thousand cubic meters, or raw material usage, product output, ton; k is the pollutant generation coefficient; η is the removal efficiency of the pollutant treatment facility, and the unit is %; γ is the actual annual operation rate of the pollutant treatment facility, and the unit is %;

[0033] The calculation method for the emissions of volatile organic liquid storage and loading is as shown in formula (4):

[0034] E = D × (1 - η × γ) (4)

[0035] In formula (4), E is the annual pollutant emissions, and the unit is kg; D is the annual pollutant generation amount, and the unit is kg; η is the removal efficiency of the pollutant treatment facility, and the unit is %; γ is the annual operation rate of the pollutant treatment facility, and the unit is %;

[0036] The calculation method for the emissions of pollutants at the static and dynamic sealing points of equipment is as shown in formula (5);

[0037]

[0038] In formula (5), E is the annual pollutant emission of the sealing points of the equipment and pipeline components, with the unit of kg; n is the type of the sealing points of the equipment and pipeline components through which the volatile organic matter flows; A is the number of types of the sealing points of the equipment and pipeline components through which the volatile organic matter flows, with the unit of piece; k is the emission coefficient, with the unit of kg / h / emission source; ti is the annual operating time of the sealing point i, with the unit of h;

[0039] The calculation method of the pollutant emissions of the industrial anti-corrosion coating used is shown in formula (6):

[0040] E = A × k (6)

[0041] In formula (6), E is the annual pollutant emission, with the unit of kg; A is the annual usage amount of the anti-corrosion coating, with the unit of t; k is the pollutant generation coefficient.

[0042] Note: The above method can calculate the emissions caused by each link involving pollutants in the production process.

[0043] Furthermore, in S2, the method for correcting and simulating the production emission process of Class C enterprises to calculate the pollutant emissions is as follows:

[0044] S2-1. According to the pollution emission information of Class C enterprises, calculate the initial value of the emissions through the material balance method;

[0045] S2-2. Then use the first-stage emission coefficient and the second-stage emission coefficient in similar enterprises or standard regulations to correct the initial value of the emissions to obtain the corrected value of the emissions;

[0046] S2-3. Based on the pollution emission information and the corrected value of the emissions, perform Monte Carlo simulation operations to obtain the pollutant emissions.

[0047] Note: The above method aims at the characteristics of incomplete data of Class C enterprises, and completes the process of simulation calculation through the methods of initial value calculation, coefficient correction, and uncertainty quantification. Through scientific modeling and uncertainty analysis, a high-confidence emission range can be output, avoiding serious deviations caused by poor data quality in traditional single methods.

[0048] Furthermore, in S2-2, the method of using the first-stage emission coefficient and the second-stage emission coefficient in similar enterprises or standard regulations to correct the emissions disposal to obtain the corrected value of the emissions is as follows:

[0049] Through investigation / consulting materials, obtain the first-stage emission coefficient in similar enterprises or standard regulations and the second-stage emission coefficient calculated by the material balance method;

[0050] Take the ratio of the first-stage emission factor in the same type of enterprises or specified in the standard to the second-stage emission factor calculated by the material balance method as the correction factor;

[0051] Calculate the emission correction value according to formula (7):

[0052]

[0053] In the formula, e is the emission correction value, e0 is the initial emission value, and λ is the correction factor.

[0054] Furthermore, the method of performing Monte Carlo simulation operations based on the pollutant emission information and the emission correction value in S2-3 to obtain the simulated emission information and the pollutant emissions is as follows: First, obtain the probability distributions of multiple first-stage emission factors, second-stage emission factors, and multiple activity level data through S2-1 and S2-2; Subsequently, generate multiple sets of parameter combinations of the first-stage emission factor, second-stage emission factor, and activity level data through random sampling, perform successive iterative Monte Carlo simulation operations on each set of parameter combinations to obtain multiple sets of simulation results of pollutant emissions, summarize the simulation results, and statistically calculate the mean and confidence interval of pollutant emissions to generate a simulated emission dataset.

[0055] Note: The above method uses the same type of enterprise / standard coefficient to constrain the possible theoretical deviation of the material balance calculation, and also flexibly adapts to the special working conditions of specific enterprises through a dynamic correction factor, significantly improving the rationality and universality of the emission correction value.

[0056] The beneficial effects of the present invention are:

[0057] The method of the present invention scientifically differentiates enterprise types, sets clear differentiation methods for enterprises with different data bases and matches differentiated accounting methods, which not only ensures the accuracy of the accounting results of high-data-quality enterprises but also makes up for the information gaps of low-data-quality enterprises, and comprehensively covers the total pollutant emissions in the park through full-scale summation. This method effectively balances the accounting accuracy and feasibility, solves the problems of underestimation or overestimation caused by uneven enterprise data during the accounting process, and provides reliable data support for precise pollution control. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 is a schematic diagram of the full-scale accounting process of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0059] To further illustrate the methods and achieved effects adopted by the present invention, the technical solutions of the present invention will be clearly and completely described below in combination with experiments.

[0060] It should be understood that the emission link refers to the pollutant source that causes environmental pollution, usually referring to the places, equipment or devices that emit harmful substances to the environment or have harmful effects on the environment, including organized and unorganized emission links.

[0061] For the actual measurement method, when calculating the emissions of waste gas pollutants using the actual measurement method, relevant data such as waste gas volume and concentration are obtained through means such as an automatic on-line continuous monitoring system or manual monitoring, and the generation amount or emission amount of waste gas pollutants per unit time is calculated and determined.

[0062] The pollution generation and emission coefficient method refers to a method of selecting the pollution generation coefficients given in the pollution source strength accounting technical guidelines for relevant industries according to different raw fuels, products, processes, scales and treatment measures, calculating the pollutant generation amount based on the product output per unit time, and combining the situation of the treatment measures adopted to calculate the pollutant emission amount per unit time.

[0063] The material balance method refers to a method of calculating and determining the pollutant generation amount or emission amount per unit time according to the law of conservation of mass and using the balance relationship of the quantity of materials or the quantity of elements between the input end and the output end.

[0064] Example 1: A method for total amount accounting of atmospheric pollutants in a park, characterized by including the following steps:

[0065] S1. Distinguish the types of enterprises;

[0066] Collect the pollution emission information of enterprises in the park. According to the pollution emission information, the enterprises are divided into type A enterprises, type B enterprises and type C enterprises; the pollution emission information includes pollution emission links, types of pollutants emitted, the completeness of the actual measurement coverage range of pollutants and the actual measurement coverage range, the standardization of the actual measurement data of pollutants and the actual measurement data, the feasibility of the actual measurement results of pollutants and the actual measurement results, activity level data, and the clarity of the activity level data;

[0067] Among them, the actual measurement coverage range in the type A enterprises is complete, the actual measurement data is standardized, and the actual measurement results are feasible;

[0068] The actual measurement coverage range in the type B enterprises is incomplete and / or the actual measurement data is not standardized and / or the actual measurement results are not feasible, and the activity level data is clear;

[0069] The actual measurement coverage range in the type C enterprises is incomplete and / or the actual measurement data is not standardized and / or the actual measurement results are not feasible, and the activity level data is not clear;

[0070] The method for judging the completeness of the actually measured coverage range of pollutants is as follows: It is judged whether all facilities and processes that generate pollutants are monitored during the actual measurement, and whether the setting of the monitoring positions can represent the true emissions of the emission sources; when all facilities and processes that generate pollutants are monitored during the actual measurement and the setting of the monitoring positions can represent the true emissions of the emission sources, it is judged that the actually measured coverage range of pollutants is complete; otherwise, the actually measured coverage range is incomplete.

[0071] The method for judging the feasibility of the actually measured results is as follows: For a certain pollutant, first use the actual measurement method to calculate the first emission amount, and then use the production and pollutant discharge coefficient method to calculate the second emission amount. When the ratio of the first emission amount to the second emission amount is within the range of [0.8, 1.5], it is considered that the actually measured results are feasible; otherwise, it is considered that the actually measured results are not feasible.

[0072] Exemplarily, the method for judging the standardization of the actually measured data is as follows: The method for obtaining the actually measured data needs to meet the technical specifications such as the Measures for the Administration of Automatic Monitoring and Control of Pollution Sources in Jiangsu Province (Revised in 2022) (Su Huan Fa 〔2022〕 No. 5), Technical Specifications for Continuous Monitoring of Flue Gas (SO2, NOx, Particulate Matter) Emissions from Stationary Pollution Sources (HJ 75-2017), Implementation Plan for the Total Emission Statistics of Industrial Sources in Jiangsu Province (Trial) (Su Huan Ban 〔2023〕 No. 104), General Guidelines for Self-Monitoring of Pollutant Dischargers (HJ 819-2017), Technical Specifications for Monitoring of Stationary Source Exhaust Gas (HJ / T 397-2007), etc., and relevant standard specifications such as pollutant discharge permits.

[0073] The method for judging the clarity of activity level data is as follows: When the obtained data has complete and traceable original records, the time and space coverage matches the accounting requirements, the measurement method complies with the specifications, and multi-source data matches, it is considered that the activity level data is clear; otherwise, it is considered that the activity level data is not clear. Among them, the original records (such as production logs, energy consumption tables, raw material procurement documents), the time and space coverage matches the accounting requirements (such as continuous recording by day / month / year and covering all process links), the measurement method complies with the specifications (such as calibrated instrument monitoring or authoritative statistical standards), and multi-source data matches (such as the logical match between production volume and energy consumption, or the deviation from the benchmark data of the same industry is within a reasonable range).

[0074] S2. Determine the accounting method;

[0075] Type A enterprises use the actual measurement method for accounting; Type B enterprises use the production and pollutant discharge coefficient method for accounting; Type C enterprises use the production and pollutant discharge coefficient method and / or material balance method and / or modified simulation method for calculation; the modified simulation method is a method for calculating the pollutant emissions by modifying and simulating the production and emission process of Type C enterprises.

[0076] Among Class A enterprises, ① for enterprises where the main sources of SO2 and NOx are fuel combustion sources (including power generation and other chemical enterprises using boilers and kilns), on-site measurements shall be carried out for the exhaust stacks of boilers and kilns, that is, the measurement scope shall cover completely; for chemical enterprises producing sulfuric acid or nitric acid, on-site measurements of SO2 or NOx shall be carried out for the exhaust stacks of boilers, kilns, sulfuric acid or nitric acid production processes. ② For particulate matter, if its main emission source is only the fuel combustion source, on-site measurements can be carried out for the boiler exhaust stack; for chemical enterprises involving particulate matter emissions in the production process, on-site measurements shall be carried out for the exhaust stacks of all production workshops with particulate matter emissions, including production processes such as mixing particles, crushing, screening, feeding, and mixing.

[0077] In S2, when the pollution emission links in Class C enterprises are clear but material input and output data cannot be obtained (the material input and output data here refer to the detailed and accurate amounts of material input and output), the production and pollution discharge coefficient method shall be used for accounting; when the pollution emission links in Class C enterprises are clear and material input and output data can be obtained, the material balance method shall be used (usually used for accounting SO2 emissions from fixed combustion sources and VOCs emissions from solvent use sources), otherwise, the modified simulation method shall be used for accounting.

[0078] Among them, the judgment methods for whether the pollution emission links are clear and whether the types of pollutants discharged are clear are as follows: through methods such as on-site inspections, review of pollution discharge permit application materials, and environmental supervision procedures, comprehensively sort out the production and pollution discharge links of the enterprise, and combine with industry pollutant discharge standards and environmental impact assessment documents to clarify the types of pollutants at each discharge port, and then judge whether the pollution emission links are clear and whether the types of pollutants discharged are clear;

[0079] In S2, in the case of installing automatic detection equipment: the methods for accounting by the on-site measurement method are shown in Formulas (1) and (2);

[0080]

[0081]

[0082] In the formula: M j is the actual emission amount of the pollutant at the j-th discharge port during the accounting period, with the unit of t; c i is the measured average emission concentration of the pollutant at the j-th discharge port in the i-th hour, with the unit of mg / m 3 ; q i is the exhaust gas volume at the j-th discharge port in the i-th hour, with the unit of m 3 / h; T is the pollutant emission time during the accounting period, with the unit of h; E is the pollutant emission amount during the accounting period, with the unit of t; m is the number of exhaust gas discharge ports, with the unit of piece;

[0083] Calculation of the total amount of atmospheric pollutants discharged from the un-installed online monitoring emission outlet:

[0084] For emission outlets or pollutant items for which the installation of automatic monitoring equipment is not required, manual monitoring data that complies with the monitoring specifications shall be used to calculate the pollutant emissions. The actual emissions of pollutants shall be calculated using the hourly average emission concentration, hourly flue gas volume, and operating time of pollutants during each manual monitoring period. The calculation methods are shown in Formulas (1-1) and (1-2).

[0085]

[0086] In the formula: M j is the actual emission of pollutants from the j-th emission outlet during the accounting period, in t; c i is the measured hourly emission concentration of pollutants from the j-th emission outlet during the i-th monitoring period, in mg / m 3 ; q i is the exhaust gas volume of the j-th emission outlet during the i-th monitoring period, in m 3 / h; T is the cumulative operating time of the emission outlet during the i-th monitoring period, in h; n is the actual monitoring frequency, but shall not be lower than the minimum monitoring frequency, in times; E is the actual emission of pollutants from the emission outlet during the accounting period, in t.

[0087] The manual monitoring data shall also meet the following requirements: ① The manual monitoring data of the exhaust gas at the monitoring point corresponding to the production and pollutant discharge accounting link shall be used for calculation; ② When there are multiple sets of monitoring data during the monitoring period, weighted averaging shall be carried out; ③ If there are both monitoring data of the ecological environment department and self-monitoring data of the pollutant discharging unit during the same period, the monitoring data of the ecological environment department shall be preferentially used.

[0088] The methods for calculation using the pollutant emission coefficient method include:

[0089] According to the pollution source items of pollutants, determine the calculation formula; the pollutant emissions are the sum of the emissions of each pollution source item; the pollution source items include combustion process, production process, use of industrial anti-corrosion coatings, storage and loading of volatile organic liquids, and static and dynamic sealing points of equipment;

[0090] The calculation methods for the combustion process and production process are shown in Formula (3):

[0091] E = A × k × (1 - η × γ) (3)

[0092] In Formula (3), E is the annual emission of pollutants during the accounting period, in t; A is the fuel consumption during the accounting period, in tons or ten thousand cubic meters, or raw material usage, product output, in tons; k is the pollutant generation coefficient; η is the removal efficiency of the pollutant treatment facility, in %; γ is the actual annual operation rate of the pollutant treatment facility, in %;

[0093] The calculation method for the storage and loading emissions of volatile organic liquids is as shown in formula (4):

[0094] E = D × (1 - η × γ) (4)

[0095] In formula (4), E is the annual pollutant emissions, in kg; D is the annual pollutant generation amount, in kg; η is the removal efficiency of the pollutant treatment facility, in %; γ is the annual operation rate of the pollutant treatment facility, in %;

[0096] The calculation method for the pollutant emissions at the static and dynamic seal points of the equipment is as shown in formula (5);

[0097]

[0098] In formula (5), E is the annual pollutant emissions at the seal points of equipment and pipeline components, in kg; n is the type of seal points of equipment and pipeline components through which volatile organic substances flow; A is the number of types of seal points of equipment and pipeline components through which volatile organic substances flow, in units; k is the emission coefficient, in kg / h / emission source; ti is the annual operation time of seal point i, in h;

[0099] The calculation method for the pollutant emissions from the use of industrial anti-corrosion coatings is shown in formula (6):

[0100] E = A × k (6)

[0101] In formula (6), E is the annual pollutant emissions, in kg; A is the annual usage amount of anti-corrosion coatings, in t; k is the pollutant generation coefficient.

[0102] The calculation formula for the VOCs generation amount during the storage of volatile organic liquids is as follows:

[0103]

[0104] In the formula: D is the annual VOCs generation amount, kg; k1 is the working loss emission coefficient, kg / t·turnover; k2 is the static loss emission coefficient, kg; n is the number of storage tanks under the same material, storage tank type, storage tank volume, and storage temperature; Qi is the annual turnover of the material, t;

[0105] The calculation formula for the generation amount during the loading of organic liquids is as follows:

[0106]

[0107] In the formula: D is the annual VOCs generation amount, kg; k1 is the loading coefficient, kg / t - loading amount; Qi is the annual loading amount of the material, t;

[0108] In S2, the method for correcting the production emission process of Class C enterprises and simulating the calculation of pollutant emissions is as follows:

[0109] S2-1. According to the pollution emission information of Class C enterprises, calculate the initial value of emissions through the material balance method;

[0110] Specifically, the specific steps for calculating the initial value of emissions of Class C enterprises through the material balance method are as follows: clarify the input-output relationship of pollutants in the production process, and establish an equation based on the law of conservation of mass. For example, for the SO2 emission of a coal-fired boiler, the input item is the coal consumption × the sulfur content in the coal, and the output item is the SO2 emission (considering the molar ratio coefficient of sulfur converted to SO2 as 2 and deducting the desulfurization efficiency). The formula is: SO2 emission (kg) = coal consumption (t) × sulfur content (%) × 2 × 1000 × (1 - desulfurization efficiency %). If the sulfur content or desulfurization efficiency data is missing, the industry average value or equipment design parameters are used for substitution (such as taking the sulfur content as 1.2% and the desulfurization efficiency as 60%) to obtain the initial value of emissions;

[0111] S2-2. Then, use the first-stage emission coefficient and the second-stage emission coefficient in similar enterprises or standard regulations to correct the initial value of emissions to obtain the corrected value of emissions; The first-stage emission coefficient is the pollutant generation coefficient / emission coefficient specified in similar enterprises or standards; for example, the standard is "Emission Source Statistical Survey Production Pollution Discharge Accounting Methods and Coefficient Manual";

[0112] In S2-2, the method for using the first-stage emission coefficient and the second-stage emission coefficient in similar enterprises or standard regulations to correct the emissions disposal to obtain the corrected value of emissions is as follows:

[0113] Through research / consulting materials, obtain the first-stage emission coefficient in similar enterprises or standard regulations and the second-stage emission coefficient calculated by the material balance method;

[0114] Among them, the second-stage emission coefficient calculated by the material balance method is to calculate the generation and emissions of pollutants using the material input and output data in the production process, so as to determine the production and pollution discharge coefficients; that is

[0115] Take the ratio of the first-stage emission coefficient in similar enterprises or standard regulations to the second-stage emission coefficient calculated by the material balance method as the correction factor;

[0116] Calculate the corrected value of emissions according to formula (7):

[0117]

[0118] In the formula, e is the corrected value of emissions, e0 is the initial value of emissions, λ is the correction factor. Exemplarily, the correction factor is 0.9.

[0119] S2-3. Perform Monte Carlo simulation operations based on the pollutant emission information and the emission correction value to obtain the pollutant emissions.

[0120] First, obtain the probability distributions of multiple first-stage production emission coefficients, second-stage production emission coefficients, and multiple activity level data through S2-1 and S2-2; then generate multiple groups of parameter combinations of the first-stage production emission coefficients, second-stage production emission coefficients, and activity level data through random sampling, perform successive iterative Monte Carlo simulation operations on each group of parameter combinations to obtain multiple groups of simulation results of pollutant emissions, summarize the simulation results, statistically calculate the mean and confidence interval of the pollutant emissions, and generate a simulated emission dataset.

[0121] S3. Total accounting;

[0122] Sum up the pollutant emissions calculated for Class A enterprises, Class B enterprises, and Class C enterprises to obtain the total accounting result. Exemplarily, the total emissions of Class A enterprises are 33 tons, the total emissions of Class B enterprises are 32 tons, and the total emissions of Class C enterprises are 15 tons: the total accounting result is 80 tons.

Claims

1. A method for total accounting of atmospheric pollutants in a park, characterized in that, It includes the following steps: S1. Classify enterprise types; Collect the pollution emission information of enterprises in the park. According to the pollution emission information, classify the enterprises into Class A enterprises, Class B enterprises, and Class C enterprises. The pollution emission information includes pollution emission links, types of pollutants discharged, completeness of the actual measurement coverage range of pollutants and the actual measurement coverage range, standardization of the actual measurement data of pollutants and the actual measurement data, feasibility of the actual measurement results of pollutants and the actual measurement results, activity level data, and clarity of the activity level data; Among them, the actual measurement coverage range in the Class A enterprises is complete, the actual measurement data is standardized, and the actual measurement results are feasible; In the Class B enterprises, the actual measurement coverage range is incomplete and / or the actual measurement data is not standardized and / or the actual measurement results are not feasible, and the activity level data is clear; In the Class C enterprises, the actual measurement coverage range is incomplete and / or the actual measurement data is not standardized and / or the actual measurement results are not feasible, and the activity level data is not clear; S2. Determine the accounting method; For Class A enterprises, the actual measurement method is used for accounting; for Class B enterprises, the production and pollution discharge coefficient method is used for accounting; for Class C enterprises, the production and pollution discharge coefficient method and / or the material balance method and / or the modified simulation method are used for accounting. The modified simulation method is a method for calculating the pollutant emissions by modifying and simulating the production and emission process of Class C enterprises; S3. Total amount accounting; Sum up the pollutant emissions calculated for Class A enterprises, Class B enterprises, and Class C enterprises to obtain the total amount accounting result.

2. The total amount accounting method for atmospheric pollutants in a park according to claim 1, wherein, In S2, when the pollution emission links in Class C enterprises are clear but the material input and output data cannot be obtained, the production and pollution discharge coefficient method is used for accounting; when the pollution emission links in Class C enterprises are clear and the material input and output data can be obtained, the material balance method is used, otherwise, the modified simulation method is used for accounting.

3. The total amount accounting method for atmospheric pollutants in a park according to claim 1, wherein In S1, the method for judging the completeness of the actual measurement coverage range of pollutants is: judge whether all facilities and processes that generate pollutants are monitored during the actual measurement, and whether the setting of the monitoring location can represent the true emissions of the emission source. When all facilities and processes that generate pollutants are monitored during the actual measurement and the setting of the monitoring location can represent the true emissions of the emission source, it is judged that the actual measurement coverage range of pollutants is complete, otherwise, the actual measurement coverage range is incomplete.

4. The total amount accounting method for atmospheric pollutants in a park according to claim 1, wherein, In S1, the method for judging the feasibility of the actual measurement results is: for a certain pollutant, first use the actual measurement method to calculate the first emission amount, and then use the production and pollution discharge coefficient method to calculate the second emission amount. When the ratio of the first emission amount to the second emission amount is within the range of [0.8, 1.5], it is considered that the actual measurement results are feasible, otherwise, it is considered that the actual measurement results are not feasible.

5. The total amount accounting method for atmospheric pollutants in a park according to claim 1, characterized in that In S1, the method for judging the clarity of the activity level data is: when the obtained data has complete and traceable original records, the time and space coverage matches the accounting requirements, the measurement method meets the specifications, and the multi-source data matches, it is considered that the activity level data is clear, otherwise, it is considered that the activity level data is not clear.

6. The total amount accounting method for atmospheric pollutants in a park according to claim 1, characterized in that, In S2, the method for calculating the pollutant emissions by modifying and simulating the production and emission process of Class C enterprises is: S2-1. Calculate the initial emission value through the material balance method based on the pollution emission information of Class C enterprises; S2-2. Then use the first-stage emission coefficient and the second-stage emission coefficient to correct the initial emission value to obtain the corrected emission value; S2-3. Based on the pollutant emission information and the corrected emission value, perform Monte Carlo simulation operations to obtain the pollutant emissions.

7. The total amount accounting method for atmospheric pollutants in a park according to claim 6, wherein In S2-2, the method of using the first-stage emission coefficient and the second-stage emission coefficient to correct the emission disposal to obtain the corrected emission value is as follows: Obtain the first-stage emission coefficient and the second-stage emission coefficient calculated by the material balance method; Take the ratio of the first-stage emission coefficient to the second-stage emission coefficient calculated by the material balance method as the correction factor; Calculate the corrected emission value according to formula (7): In the formula, e is the corrected emission value, e0 is the initial emission value, and λ is the correction factor.

8. The total amount accounting method for atmospheric pollutants in a park according to claim 6, wherein The method of performing Monte Carlo simulation operations based on the pollutant emission information and the corrected emission value in S2-3 to obtain the simulated emission information and the pollutant emissions is as follows: First, obtain the probability distributions of multiple first-stage emission coefficients and second-stage emission coefficients and multiple activity level data through S2-1 and S2-2; Subsequently, generate multiple groups of parameter combinations of the first-stage emission coefficient, the second-stage emission coefficient, and the activity level data through random sampling, perform successive iterative Monte Carlo simulation operations on each group of parameter combinations to obtain multiple groups of simulated results of pollutant emissions, summarize the simulated results, statistically calculate the mean value and confidence interval of the pollutant emissions, and generate simulated emission data.

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