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Port raise dust particle concentration spatial distribution actual measurement method

A technology of particle concentration and spatial distribution, which is applied in the direction of particle suspension analysis, measuring devices, and analysis materials, can solve the problems of unorganized dust source emission on-site monitoring without mature technology and specification requirements, and achieve data reliability, The effect of reducing the influence of environmental factors and improving data accuracy

Pending Publication Date: 2020-08-18
TIANJIN UNIV +1
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Problems solved by technology

At present, there are no mature technologies and normative requirements for on-site monitoring of unorganized dust source emissions. Therefore, the new environmental protection tax law stipulates that the accounting method of sewage charges for coal and other bulk cargo ports is still the pollution coefficient method for the time being, that is, coal throughput, coal dust, etc. The product of pollution discharge coefficient, pollution equivalent value and charging standard is used as the basis for pollutant discharge charges
According to the current technical means, it is not yet possible to deduce the source intensity based on the measured concentration and obtain the total amount of coal dust emissions from bulk cargo ports

Method used

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  • Port raise dust particle concentration spatial distribution actual measurement method
  • Port raise dust particle concentration spatial distribution actual measurement method
  • Port raise dust particle concentration spatial distribution actual measurement method

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Such as figure 1 As shown, the method for measuring the spatial distribution of dust particle concentration in the port of the present invention is a light scattering scanning measurement method based on the multi-band image method. This measurement method is less affected by environmental factors and is easy to operate. The specific implementation process is as follows:

[0019] Step 1: Set up multi-band combined lasers and CMOS cameras above the unorganized emission sources in the port yard. According to the actual situation on site, the combined lasers and CMOS cameras are distributed according to the position, and the arrangement of backscattering or side scattering can be adopted. Way. Using a combination laser and a CMOS camera to image the spatial distribution of the dust particle concentration generated by fugitive emission sources in a port. Wherein, ...

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Abstract

The invention discloses a port raise dust particle concentration spatial distribution actual measurement method. The method comprises the steps that a multiband combined laser and a CMOS camera are erected above an inorganized emission source of a port storage yard, and a backward scattering arrangement mode or a lateral scattering arrangement mode is adopted; the combined laser emits a laser scanning beam to a three-dimensional space formed by flying dust particles generated by a port unorganized emission source; the CMOS camera receives backward scattered light of the flying dust particulatematter or bright light beams passing through the flying dust particulate matter, a gray value matrix picture of the flying dust particulate matter is obtained through shooting, and particulate matterconcentration information is obtained through a gray value matrix; and the spatial distribution of the concentration of the flying dust particles is obtained through a scattering theory.

Description

technical field [0001] The invention relates to the field of atmospheric environment monitoring, and more specifically relates to a method for actually measuring the spatial distribution of the concentration of dust particles in a port. Background technique [0002] At present, my country's port development has gradually changed from large-scale development to high-quality development. Strengthening port environmental protection and realizing green development are the most important part of improving port quality and efficiency. From January 1, 2018, the "Environmental Protection Tax Law of the People's Republic of China" was officially implemented, and the coal dust discharge of bulk cargo ports will no longer be subject to sewage discharge fees, but environmental protection taxes will be collected according to law. In June 2019, the Ministry of Ecology and Environment issued technical specifications for the application and issuance of pollutant discharge permits. At prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
CPCG01N15/06G01N15/075
Inventor 张春意白景峰薛永华李金钊张斌斌刘筱萌
Owner TIANJIN UNIV
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