CN110954658A - Gridding tracing investigation method for volatile organic compounds in industrial park - Google Patents
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 91
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- 238000012544 monitoring process Methods 0.000 claims abstract description 72
- 238000004519 manufacturing process Methods 0.000 claims abstract description 30
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 3
- 239000010865 sewage Substances 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a gridding tracing investigation method for volatile organic compounds in an industrial park, which divides the industrial park into different process areas, namely a first layer of grid according to the production process of the industrial park, VOCs production and pollution discharge nodes, climatic conditions and the like; in each process area, fixed-point continuous monitoring distribution points of the automatic monitoring station, namely second-layer grids, are set according to the floor area and the like; on the basis of the initial analysis of the fixed-point continuous monitoring result, a mobile analyzer is adopted to carry out synchronous mobile monitoring on the second-layer grid, and the total pollution condition of VOCs of the second-layer grid is mastered; summarizing monitoring data of all second-layer grids to form the total VOCs emission level, hour change trend and characteristic species of the first-layer grids; and drawing a pollution map of the first grid layer, analyzing the total amount, high concentration value and occurrence direction of VOCs of the pollution map, and realizing the traceability analysis of VOCs pollution of the first grid layer and the whole industrial park.
Description
Technical Field
The invention relates to the technical field of environmental monitoring, in particular to a gridding tracing investigation method for volatile organic compounds in an industrial park.
Background
Volatile Organic Compounds (VOCs), a major class of atmospheric pollutants, have received increased attention in recent years, and VOCs can seriously harm human health and are also PM2.5And a key precursor of ozone. The contribution of the artificial source VOCs to the secondary aerosol of the atmosphere can reach more than 70 percent, and the ozone pollution level in the atmosphere in most areas of China is also mainly influenced by the volume fraction of the VOCs. The country highly attaches importance to the VOCs pollution prevention and treatment work, and puts forward the work requirements of identifying characteristic pollutants, carrying out gridding monitoring and tracing analysis on industrial parks in key industry treatment tasks.
As an industrial park with VOCs as a main artificial fixed emission source, the emission characteristic analysis and traceability investigation of the VOCs can provide powerful technical support for pollution prevention and control work. The discharge of VOCs pollutants in an industrial park generally has the characteristics of large discharge intensity in unit area, high unorganized discharge proportion, irregular discharge time and the like, and the traditional field manual sampling analysis mode is difficult to capture instantaneous and sudden pollution, so that the identification of pollution sources is not clear; the fixed-point continuous automatic monitoring mode is limited to a single set of monitoring system, the price is high, a plurality of fixed-point monitoring points cannot be built, the high-value source points of VOCs cannot be effectively confirmed, and the requirement of VOCs pollution traceability investigation of an industrial park is difficult to meet.
Disclosure of Invention
The invention aims to solve the technical problem of providing a gridding tracing investigation method for volatile organic compounds in an industrial park, which overcomes the defects of monitoring VOCs in the traditional industrial park, has wide application range, adopts fixed-point monitoring matched with mobile monitoring, combines meteorological parameter synchronous monitoring, identifies instantaneous and sudden pollution sources, effectively confirms high-value source points of pollutants, and meets the requirements of tracing investigation on VOCs pollution in the industrial park.
In order to solve the technical problem, the method for gridding tracing investigation of the volatile organic compounds in the industrial park comprises the following steps:
dividing an industrial park into different process areas, namely a first-layer grid according to the production process of the industrial park, VOCs related production and pollution discharge nodes, the use range of raw and auxiliary materials, the conditions and the approximate concentration level of production and pollution discharge factors and the local climate conditions of the location of the industrial park;
step two, setting fixed-point continuous monitoring distribution points, namely a second-layer grid, of the automatic micro VOCs monitoring stations in each process area according to the floor area, the production process and the layout of production and sewage;
thirdly, taking the second layer of grids as monitoring point distribution points, on the basis of preliminary analysis of fixed point continuous monitoring results, combining wind direction, wind speed, trend layout of a process production line and possible leakage areas, adopting a mobile VOCs rapid analyzer to synchronously move and monitor the point position boundary of a main production line related to VOCs production, the vertical wind direction generated by a high concentration value and the boundary of the grids for a certain period, synchronously recording wind direction and wind speed meteorological condition parameters during monitoring, and mastering the total VOCs pollution condition of the second layer of grids;
step four, summarizing the total VOCs emission amount and the single-factor concentration level of each species of all second-layer grids to form the total VOCs emission level, the hour change trend and the characteristic species of the first-layer grids;
and step five, combining the meteorological condition parameters of wind direction and wind speed synchronously recorded during monitoring, drawing a pollution map of the first grid layer, analyzing the total quantity, high concentration value and generating direction of VOCs of the pollution map, combining the single factor concentration monitoring values of all the species of VOCs of each second grid monitoring point of the generating direction, and analyzing the association degree of the goodness of fit and the concentration value of the species, thereby realizing the traceability analysis of the VOCs pollution of the first grid layer and finally realizing the traceability investigation of the VOCs of the whole industrial park.
Furthermore, the synchronous movement monitoring period of the mobile VOCs rapid analyzer is 2-4 weeks.
Furthermore, the second layer of grids is a process area with the square kilometer of 1-2.
Further, the pollution map is a concentration-wind rose plot.
The method for the gridding tracing investigation of the volatile organic compounds in the industrial park adopts the technical scheme, namely the method divides the industrial park into different process areas, namely a first-layer grid according to the production process of the industrial park, VOCs production and pollution discharge nodes, weather conditions and the like; in each process area, fixed-point continuous monitoring distribution points of the automatic monitoring station, namely second-layer grids, are set according to the floor area and the like; on the basis of the initial analysis of the fixed-point continuous monitoring result, a mobile analyzer is adopted to carry out synchronous mobile monitoring on the second-layer grid, and the total pollution condition of VOCs of the second-layer grid is mastered; summarizing monitoring data of all second-layer grids to form the total VOCs emission level, hour change trend and characteristic species of the first-layer grids; and drawing a pollution map of the first grid layer, analyzing the total amount, high concentration value and occurrence direction of VOCs of the pollution map, and realizing the traceability analysis of VOCs pollution of the first grid layer and the whole industrial park. The method overcomes the defects of VOCs monitoring in the traditional industrial park, is wide in application range, adopts fixed-point monitoring matched with mobile monitoring, combines meteorological parameter synchronous monitoring, identifies instantaneous and sudden pollution sources, effectively confirms high-value source points of pollutants, and meets the requirements of VOCs pollution traceability investigation in the industrial park.
Detailed Description
The invention discloses a gridding tracing investigation method for volatile organic compounds in an industrial park, which comprises the following steps:
dividing an industrial park into different process areas, namely a first-layer grid according to the production process of the industrial park, VOCs related production and pollution discharge nodes, the use range of raw and auxiliary materials, the conditions and the approximate concentration level of production and pollution discharge factors and the local climate conditions of the location of the industrial park;
step two, setting fixed-point continuous monitoring distribution points, namely a second-layer grid, of the automatic micro VOCs monitoring stations in each process area according to the floor area, the production process and the layout of production and sewage;
thirdly, taking the second layer of grids as monitoring point distribution points, on the basis of preliminary analysis of fixed point continuous monitoring results, combining wind direction, wind speed, trend layout of a process production line and possible leakage areas, adopting a mobile VOCs rapid analyzer to synchronously move and monitor the point position boundary of a main production line related to VOCs production, the vertical wind direction generated by a high concentration value and the boundary of the grids for a certain period, synchronously recording wind direction and wind speed meteorological condition parameters during monitoring, and mastering the total VOCs pollution condition of the second layer of grids;
step four, summarizing the total VOCs emission amount and the single-factor concentration level of each species of all second-layer grids to form the total VOCs emission level, the hour change trend and the characteristic species of the first-layer grids;
step five, combining synchronously recorded wind direction and wind speed meteorological condition parameters during monitoring, drawing a pollution map of a first grid layer, analyzing the total amount of VOCs, high concentration value and generating direction of the pollution map, combining single factor concentration monitoring values of all kinds of VOCs of each second grid monitoring point of the generating direction, analyzing the coincidence degree and the correlation degree of the concentration value of the kinds, thereby realizing the traceability analysis of the VOCs pollution of the first grid layer and finally realizing the traceability investigation of the VOCs of the whole industrial park; wherein, the goodness of fit of the species is the consistency of the two.
Preferably, the synchronous movement monitoring period of the mobile VOCs rapid analyzer is 2-4 weeks.
Preferably, the second layer of grids is a process area with the square kilometer of 1-2.
Preferably, the pollution map is a concentration-wind rose plot.
The automatic micro VOCs monitoring station and the mobile VOCs rapid analyzer in the method both adopt the combination of GC (gas chromatography) + electrochemistry, FID sensors and the like, and can monitor more than 30 substances such as alkane, olefin, aromatic hydrocarbon, halogenated hydrocarbon, oxygen-containing organic matter and the like; the instrument can be continuously and automatically monitored in the outdoor environment in an industrial control cabinet mode; the mobile VOCs rapid analyzer is miniaturized on the basis, and can be conveniently and rapidly moved by applying the characteristics of energy conservation, electricity conservation, low requirements on use environment conditions and the like, so that the monitoring requirement of high monitoring point position density in a short period can be met.
In the method, the fixed-point continuous monitoring period of a micro VOCs automatic monitoring station in a process area is about 2-4 weeks, and the fixed-point continuous monitoring period is used for measuring the overall characteristics of the unorganized emission of VOCs in the process area; the mobile VOCs rapid analyzer is used for monitoring potential VOCs high-concentration discharge point locations, and when wind-up and wind-down direction point locations, the fixed point continuous monitoring point locations are concerned about VOCs sources and diffusion.
According to the method, a VOCs gridding monitoring distribution scheme is established according to a monitoring distribution principle and aiming at the characteristics of the industrial park on the basis of fully investigating main production processes, VOCs related production and pollution discharge nodes and the like of the industrial park. According to the point arrangement scheme, a micro VOCs automatic monitoring station is used for carrying out fixed-point continuous monitoring, and the total VOCs pollution condition of each relevant process area of the park is mastered; and mobile monitoring is carried out by using a mobile VOCs rapid analyzer, and potential leakage and emission characteristic monitoring is carried out close to a potential pollution source and a process section. And by combining synchronous meteorological monitoring parameters of the industrial park, such as temperature, air pressure, wind direction, wind speed and the like, and by means of statistical analysis software such as a pollution map and the like, the VOCs pollution traceability analysis of the industrial park is completed, and technical decision support is provided for pollution control.
The method has wide application range, according to statistics, about 2.2 thousands of industrial parks all over the country at present, and the requirement of VOCs-polluted environment management is huge, so the method is suitable for industrial parks of various industrial categories; the method adopts a technical route of fixed-point monitoring and mobile monitoring, combines meteorological parameter synchronous monitoring, is suitable for the discharge characteristics of VOCs in industrial parks, identifies instantaneous and sudden pollution sources, effectively confirms high-value source points of pollutants, simultaneously has the characteristics of cost saving, improvement of monitoring efficiency, simple and convenient monitoring operation and maintenance and the like compared with the traditional technologies of arranging a plurality of fixed monitoring points or manual sampling analysis and the like in the prior art, and is convenient for online monitoring operation and maintenance personnel to use.
Claims (4)
1. A gridding tracing investigation method for volatile organic compounds in an industrial park is characterized by comprising the following steps:
dividing an industrial park into different process areas, namely a first-layer grid according to the production process of the industrial park, VOCs related production and pollution discharge nodes, the use range of raw and auxiliary materials, the conditions and the approximate concentration level of production and pollution discharge factors and the local climate conditions of the location of the industrial park;
step two, setting fixed-point continuous monitoring distribution points, namely a second-layer grid, of the automatic micro VOCs monitoring stations in each process area according to the floor area, the production process and the layout of production and sewage;
thirdly, taking the second layer of grids as monitoring point distribution points, on the basis of preliminary analysis of fixed point continuous monitoring results, combining wind direction, wind speed, trend layout of a process production line and possible leakage areas, adopting a mobile VOCs rapid analyzer to synchronously move and monitor the point position boundary of a main production line related to VOCs production, the vertical wind direction generated by a high concentration value and the boundary of the grids for a certain period, synchronously recording wind direction and wind speed meteorological condition parameters during monitoring, and mastering the total VOCs pollution condition of the second layer of grids;
step four, summarizing the total VOCs emission amount and the single-factor concentration level of each species of all second-layer grids to form the total VOCs emission level, the hour change trend and the characteristic species of the first-layer grids;
and step five, combining the meteorological condition parameters of wind direction and wind speed synchronously recorded during monitoring, drawing a pollution map of the first grid layer, analyzing the total quantity, high concentration value and generating direction of VOCs of the pollution map, combining the single factor concentration monitoring values of all the species of VOCs of each second grid monitoring point of the generating direction, and analyzing the association degree of the goodness of fit and the concentration value of the species, thereby realizing the traceability analysis of the VOCs pollution of the first grid layer and finally realizing the traceability investigation of the VOCs of the whole industrial park.
2. The method for gridding Volatile Organic Compounds (VOCs) traceability investigation of industrial park according to claim 1, wherein: the synchronous mobile monitoring period of the mobile VOCs rapid analyzer is 2-4 weeks.
3. The method for gridding Volatile Organic Compounds (VOCs) traceability investigation of industrial park according to claim 1, wherein: the second layer of grids is a process area with the square kilometer of 1-2.
4. The method for gridding Volatile Organic Compounds (VOCs) traceability investigation of industrial park according to claim 1, wherein: the pollution map is a concentration-wind rose plot.
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| CN112649569A (en) * | 2020-12-10 | 2021-04-13 | 南京长距科技有限公司 | Chemical industry park air multipoint sampling monitoring and tracing system and method |
| CN113970610A (en) * | 2021-11-19 | 2022-01-25 | 孙扬 | Chemical industry park atmosphere VOCs traceability online monitoring system and method |
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| CN114371260A (en) * | 2022-01-17 | 2022-04-19 | 上海蓝科石化环保科技股份有限公司 | Gridding monitoring, diffusion early warning and tracing method for non-organized VOCs of industrial enterprise |
| CN114414730A (en) * | 2020-10-12 | 2022-04-29 | 江苏省环境科学研究院 | 5G-based intelligent tracing method for toxic and harmful volatile gases in industrial park |
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| CN114414730A (en) * | 2020-10-12 | 2022-04-29 | 江苏省环境科学研究院 | 5G-based intelligent tracing method for toxic and harmful volatile gases in industrial park |
| CN112649569A (en) * | 2020-12-10 | 2021-04-13 | 南京长距科技有限公司 | Chemical industry park air multipoint sampling monitoring and tracing system and method |
| CN114091863A (en) * | 2021-11-11 | 2022-02-25 | 中科三清科技有限公司 | Method and device for evaluating pollution level of volatile organic compounds of target object in park |
| CN114091863B (en) * | 2021-11-11 | 2022-11-04 | 中科三清科技有限公司 | Method and device for evaluating pollution level of volatile organic compounds of target object in park |
| CN113970610A (en) * | 2021-11-19 | 2022-01-25 | 孙扬 | Chemical industry park atmosphere VOCs traceability online monitoring system and method |
| CN114371260A (en) * | 2022-01-17 | 2022-04-19 | 上海蓝科石化环保科技股份有限公司 | Gridding monitoring, diffusion early warning and tracing method for non-organized VOCs of industrial enterprise |
| CN115600919A (en) * | 2022-09-19 | 2023-01-13 | 江苏蓝创智能科技股份有限公司（Cn） | Method for real-time unorganized emission localization and campus emission total calculation |
| CN115600919B (en) * | 2022-09-19 | 2023-08-22 | 江苏蓝创智能科技股份有限公司 | Method for real-time unorganized emission location and total amount of campus emissions calculation |
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