CN110954658B - Gridding traceability 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 89
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000011835 investigation Methods 0.000 title claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 72
- 238000004519 manufacturing process Methods 0.000 claims abstract description 26
- 238000004458 analytical method Methods 0.000 claims abstract description 15
- 230000001360 synchronised effect Effects 0.000 claims abstract description 9
- 239000000463 material 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
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000001052 transient effect Effects 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
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- 229910052760 oxygen Inorganic materials 0.000 description 1
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Abstract
The invention discloses a gridding traceability investigation method for volatile organic compounds in an industrial park, which divides the industrial park into different process areas, namely a first layer of grids according to the production process of the industrial park, pollution discharge nodes produced by VOCs, climatic conditions and the like; setting fixed-point continuous monitoring distribution points of an automatic monitoring station, namely a second layer of grids, according to the size of the occupied area and the like in each process area; based on preliminary analysis of fixed-point continuous monitoring results, synchronous mobile monitoring is carried out on the second-layer grid by adopting a mobile analyzer, and the overall condition of VOCs pollution of the second-layer grid is mastered; summarizing the monitoring data of all the second-layer grids to form the total VOCs emission level, the hour variation trend and the characteristic species of the first-layer grids; and drawing a pollution map of the first grid layer, analyzing the total quantity, high concentration value and occurrence direction of VOCs of the pollution map, and realizing traceable 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 grid traceability investigation method for volatile organic compounds in an industrial park.
Background
As a major class of atmospheric pollutants, volatile Organic Compounds (VOCs), which can seriously harm human health and are also PM, have received increasing attention in recent years 2.5 And a key precursor of ozone. The contribution of human-source VOCs to the atmospheric secondary aerosol can reach more than 70%, 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 national importance is placed on the prevention and treatment of VOCs pollution, and the industrial park is promoted in the important industry management taskThe working requirements of identifying characteristic pollutants, carrying out gridding monitoring and tracing analysis are met.
As the industrial park of the main artificial fixed emission source of VOCs, the emission characteristic analysis and the traceability investigation of the VOCs provide powerful technical support for pollution control work. VOCs pollutant emission in an industrial park generally has the characteristics of large emission intensity per unit area, high unorganized emission proportion, irregular emission time and the like, and the traditional on-site manual sampling analysis mode is difficult to capture transient and sudden pollution, so that the pollution source is unidentified; the fixed point continuous automatic monitoring mode is limited to a single monitoring system, and is high in price, a plurality of fixed point monitoring points cannot be built, so that high-value source points of VOCs cannot be effectively confirmed, and the requirement of industrial park VOCs pollution traceability investigation is also difficult to meet.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a gridding traceability investigation method for volatile organic compounds in an industrial park, which overcomes the defects of the traditional industrial park VOCs monitoring, has a wide application range, adopts fixed-point monitoring and mobile monitoring in combination with meteorological parameter synchronous monitoring, identifies instantaneous and sudden pollution sources, effectively confirms high-value source points of pollutants, and meets the requirements of the industrial park VOCs pollution traceability investigation.
In order to solve the technical problems, the method for grid traceability investigation of the volatile organic compounds in the industrial park comprises the following steps:
step one, dividing an industrial park into different process areas, namely a first layer of grids according to the production process of the industrial park, the pollution discharge nodes produced by VOCs, the use range of raw and auxiliary materials, the condition of production pollution discharge factors, approximate concentration level and local climate conditions of the place where the industrial park is located;
step two, setting fixed-point continuous monitoring distribution points of miniature VOCs automatic monitoring stations in each process area, namely a second layer of grids according to the size of the occupied area, the production process and the layout of production and pollution discharge in each process area;
thirdly, taking a second layer of grids as monitoring point distribution points, based on 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 monitor main production line point location boundaries related to VOCs production, up-down wind directions generated by high concentration values and boundaries of the grids for a certain period, synchronously recording wind direction and wind speed meteorological condition parameters during monitoring, and grasping the general VOCs pollution condition of the second layer of grids;
step four, summarizing the total emission amount of VOCs and the single factor concentration level of each species of all the second-layer grids to form the total VOCs emission level, the hour change trend and the characteristic species of the first-layer grids;
fifthly, drawing a pollution map of a first grid layer by combining wind direction and wind speed meteorological condition parameters synchronously recorded during monitoring, analyzing the total quantity, high concentration value and occurrence direction of VOCs of the pollution map, and analyzing the fitness of each species and the relevance of concentration value by combining the single-factor concentration monitoring value of each species of the VOCs of each second-layer grid monitoring point in the occurrence direction, so as to realize the traceability analysis of the pollution of the VOCs of the first grid layer and finally realize the traceability investigation of the VOCs of the whole industrial park.
Further, the period of synchronous movement monitoring of the mobile VOCs rapid analyzer is 2-4 weeks.
Further, the second layer of grid is a process area of 1-2 square kilometers.
Further, the pollution map is a concentration-wind rose chart.
The industrial park volatile organic compound gridding traceability investigation method adopts the technical scheme that the industrial park is divided into different process areas, namely a first layer of grids according to the industrial park production process, VOCs production pollution discharge nodes, climate conditions and the like; setting fixed-point continuous monitoring distribution points of an automatic monitoring station, namely a second layer of grids, according to the size of the occupied area and the like in each process area; based on preliminary analysis of fixed-point continuous monitoring results, synchronous mobile monitoring is carried out on the second-layer grid by adopting a mobile analyzer, and the overall condition of VOCs pollution of the second-layer grid is mastered; summarizing the monitoring data of all the second-layer grids to form the total VOCs emission level, the hour variation trend and the characteristic species of the first-layer grids; and drawing a pollution map of the first grid layer, analyzing the total quantity, high concentration value and occurrence direction of VOCs of the pollution map, and realizing traceable analysis of VOCs pollution of the first grid layer and the whole industrial park. The method overcomes the defect of the traditional industrial park VOCs monitoring, has wide application range, combines fixed point monitoring with mobile monitoring, combines meteorological parameter synchronous monitoring, identifies transient and sudden pollution sources, effectively confirms high-value source points of pollutants, and meets the requirements of industrial park VOCs pollution traceability investigation.
Detailed Description
The method for grid traceability investigation of volatile organic compounds in an industrial park comprises the following steps:
step one, dividing an industrial park into different process areas, namely a first layer of grids according to the production process of the industrial park, the pollution discharge nodes produced by VOCs, the use range of raw and auxiliary materials, the condition of production pollution discharge factors, approximate concentration level and local climate conditions of the place where the industrial park is located;
step two, setting fixed-point continuous monitoring distribution points of miniature VOCs automatic monitoring stations in each process area, namely a second layer of grids according to the size of the occupied area, the production process and the layout of production and pollution discharge in each process area;
thirdly, taking a second layer of grids as monitoring point distribution points, based on 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 monitor main production line point location boundaries related to VOCs production, up-down wind directions generated by high concentration values and boundaries of the grids for a certain period, synchronously recording wind direction and wind speed meteorological condition parameters during monitoring, and grasping the general VOCs pollution condition of the second layer of grids;
step four, summarizing the total emission amount of VOCs and the single factor concentration level of each species of all the second-layer grids to form the total VOCs emission level, the hour change trend and the characteristic species of the first-layer grids;
fifthly, drawing a pollution map of a first grid layer by combining wind direction and wind speed meteorological condition parameters synchronously recorded during monitoring, analyzing the total quantity, high concentration value and occurrence direction of VOCs of the pollution map, and analyzing the fitness of each species and the association degree of concentration values by combining the single factor concentration monitoring value of each species of the VOCs of each second grid monitoring point in the occurrence direction, so as to realize the traceability analysis of the pollution of the VOCs of the first grid layer and finally realize the traceability investigation of the VOCs of the whole industrial park; the species consistency is the consistency of the species and the species.
Preferably, the period of synchronous movement monitoring of the mobile VOCs rapid analyzer is 2-4 weeks.
Preferably, the second layer of grid is a process area of 1-2 square kilometers.
Preferably, the pollution map is a concentration-wind rose map.
The miniature VOCs automatic monitoring station and the mobile VOCs rapid analyzer in the method are combined by GC (gas chromatography) +electrochemistry, FID sensors and the like, and can monitor more than 30 substances such as alkane, alkene, aromatic hydrocarbon, halohydrocarbon, oxygen-containing organic matters and the like; continuous automatic monitoring of the instrument in the outdoor environment can be realized by an industrial control cabinet mode; the mobile VOCs rapid analyzer is miniaturized on the basis, has the characteristics of energy conservation, electricity saving, low requirements on using environment conditions and the like, can conveniently and rapidly move, and can realize the monitoring requirement of high monitoring point density in a short period.
The fixed-point continuous monitoring period of the miniature VOCs automatic monitoring station in the 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 the VOCs in the process area; the mobile VOCs rapid analyzer is used for monitoring potential VOCs high-concentration emission points, and focuses on the source and diffusion of VOCs of fixed-point continuous monitoring points when the VOCs are in the upwind and downwind direction points.
On the basis of fully researching main production processes of an industrial park, pollution discharge nodes of related production of VOCs and the like, the method establishes a VOCs grid monitoring and point distribution scheme aiming at characteristics of the industrial park according to a monitoring point distribution principle. Referring to a point distribution scheme, carrying out fixed-point continuous monitoring by using a miniature VOCs automatic monitoring station, and grasping the general state of VOCs pollution in each relevant process area of a park; and (3) carrying out mobile monitoring by using a mobile VOCs rapid analyzer, and monitoring potential leakage and emission characteristics by approaching to potential pollution sources and process sections. And combining industrial park synchronous meteorological monitoring parameters such as temperature, air pressure, wind direction, wind speed and the like, completing industrial park VOCs pollution traceability analysis by means of statistical analysis software such as a pollution map and the like, and providing technical decision support for pollution treatment.
The method has wide application range, is counted to be about 2.2 ten thousand or more in various industrial parks nationwide at present, has huge environmental management requirement on VOCs pollution, and can be suitable for industrial parks of various industrial categories; the method adopts a technical route of fixed point monitoring and mobile monitoring, combines with meteorological parameter synchronous monitoring, can adapt to the VOCs emission characteristics of an industrial park, identifies instantaneous and sudden pollution sources, effectively confirms high-value source points of pollutants, and simultaneously compares the traditional technologies of arranging a plurality of fixed monitoring points or manual sampling analysis and the like, thereby having the characteristics of saving cost, improving monitoring efficiency, being simple and convenient to monitor, operate and maintain and the like, and being convenient for on-line monitoring operation and maintenance personnel to use.
Claims (4)
1. The grid traceability investigation method for the volatile organic compounds in the industrial park is characterized by comprising the following steps of:
step one, dividing an industrial park into different process areas, namely a first layer of grids according to the production process of the industrial park, the pollution discharge nodes produced by VOCs, the use range of raw and auxiliary materials, the condition of production pollution discharge factors, approximate concentration level and local climate conditions of the place where the industrial park is located;
step two, setting fixed-point continuous monitoring distribution points of miniature VOCs automatic monitoring stations in each process area, namely a second layer of grids according to the size of the occupied area, the production process and the layout of production and pollution discharge in each process area;
thirdly, taking a second layer of grids as monitoring point distribution points, based on 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 monitor main production line point location boundaries related to VOCs production, up-down wind directions generated by high concentration values and boundaries of the grids for a certain period, synchronously recording wind direction and wind speed meteorological condition parameters during monitoring, and grasping the general VOCs pollution condition of the second layer of grids;
step four, summarizing the total emission amount of VOCs and the single factor concentration level of each species of all the second-layer grids to form the total VOCs emission level, the hour change trend and the characteristic species of the first-layer grids;
fifthly, drawing a pollution map of a first grid layer by combining wind direction and wind speed meteorological condition parameters synchronously recorded during monitoring, analyzing the total quantity, high concentration value and occurrence direction of VOCs of the pollution map, and analyzing the fitness of each species and the relevance of concentration value by combining the single-factor concentration monitoring value of each species of the VOCs of each second-layer grid monitoring point in the occurrence direction, so as to realize the traceability analysis of the pollution of the VOCs of the first grid layer and finally realize the traceability investigation of the VOCs of the whole industrial park.
2. The method for grid traceability investigation of volatile organic compounds in industrial parks according to claim 1, wherein the method comprises the following steps: the period of synchronous movement monitoring of the mobile VOCs rapid analyzer is 2-4 weeks.
3. The method for grid traceability investigation of volatile organic compounds in industrial parks according to claim 1, wherein the method comprises the following steps: the second layer of grids is a process area of 1-2 square kilometers.
4. The method for grid traceability investigation of volatile organic compounds in industrial parks according to claim 1, wherein the method comprises the following steps: the pollution map is a concentration-wind rose chart.
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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 |
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| 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 |
| CN114371260B (en) * | 2022-01-17 | 2023-07-21 | 上海蓝科石化环保科技股份有限公司 | Method for performing gridding monitoring, diffusion early warning and tracing on industrial enterprise unstructured VOCs |
| 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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