Hazardous waste storage environment safety early warning method and system

Abstract

The invention discloses a dangerous waste storage environment safety early warning method and system, and relates to the technical field of dangerous waste storage environment safety early warning. The medical waste storage environment safety early warning method aims at solving the technical problems that in existing medical waste storage environment safety early warning, potential safety hazards cannot be accurately perceived in time, environmental safety cannot be scientifically evaluated, and the diffusion situation cannot be accurately mastered during leakage. The medical waste storage environment safety early warning method comprises the following steps that S1, basic parameters are set; the method comprises the following steps: setting a concentration value range of dangerous waste carbon monoxide in a storage environment as # imgabs0 #, a safety concentration value # imgabs1 #, a concentration fluctuation threshold value # imgabs2 #, a first-level early warning concentration upper limit # imgabs3 #, a fluctuation value second threshold value # imgabs4 # and a comprehensive safety value threshold value # imgabs5 #; s2, performing double-index early warning monitoring; and monitoring the concentration value # imgabs6 # and the concentration fluctuation value # imgabs7 # of carbon monoxide in real time, and carrying out graded early warning on the storage environment according to set parameters. And when the concentration value or the fluctuation value reaches a different threshold value. The method has the advantage of improving the safety of dangerous waste storage.

Description

Technical Field

[0001] The present invention relates to the technical field of safety early warning for hazardous waste storage environments, and more specifically, to a method and system for safety early warning for hazardous waste storage environments. Background Art

[0002] In the field of medical waste treatment, the safety of the hazardous waste storage environment is of vital importance. At present, medical waste often contains various types of hazardous chemicals, such as chemical reagents, discarded medicines, etc. During the storage of these hazardous wastes, the existing technology mainly uses simple concentration monitoring equipment to detect harmful gases in the storage environment. Generally, a fixed safety concentration value is set, and when the concentration of the monitored harmful gas exceeds this value, an early warning is issued. However, this method has obvious shortcomings. It only considers the concentration factor alone, does not pay attention to the concentration fluctuation, and cannot promptly detect potential safety hazards in the hazardous waste storage environment. For example, when a hazardous waste leaks slowly, although the concentration may not immediately exceed the safe concentration value, the concentration fluctuation is gradually increasing. Existing technology makes it difficult to detect this dangerous trend in the early stage, so it is impossible to take effective preventive measures in advance, which easily leads to safety accidents.

[0003] In view of this, we propose a hazardous waste storage environment safety early warning method and system. Summary of the invention

[0004] The purpose of the present invention is to provide a method and system for early warning of hazardous waste storage environment safety, so as to solve the technical problems in the existing early warning of medical waste storage environment safety, such as the inability to timely and accurately detect potential safety hazards, the difficulty in scientifically evaluating environmental safety, and the inability to accurately grasp the diffusion situation in the event of a leak.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for early warning of hazardous waste storage environment safety, comprising the following steps: S1. Basic parameter setting; Set the concentration range of carbon monoxide in the storage environment to , safe concentration value , concentration fluctuation threshold , the upper limit of the first-level warning concentration , Fluctuation value secondary threshold And the comprehensive safety value threshold ; S2, dual-indicator early warning monitoring; Real-time monitoring of carbon monoxide concentration and concentration fluctuation , and carry out graded warnings for the storage environment based on the set parameters. When the concentration value or fluctuation value reaches different thresholds, different levels of warnings are triggered and corresponding ventilation measures are taken; S3, comprehensive safety assessment; By calculating the comprehensive security value of the storage environment ,Will and comprehensive safety value threshold Make comparisons to determine whether the storage environment is safe; S4, obtaining initial leakage parameters; Obtain the relative air pressure value at the storage environment location when carbon monoxide leaks With ambient temperature ; S5, calculating leakage parameters; According to the relative air pressure value obtained and ambient temperature , calculate the partial pressure of carbon monoxide gas , leakage rate and gas density ; S6, calculating the leakage diffusion trajectory; Use the geographic coordinates of the initial leak in the storage environment and carbon monoxide gas density , the leakage diffusion trajectory of carbon monoxide is calculated through the Gaussian diffusion model of carbon monoxide concentration, and the distribution of carbon monoxide concentration at different locations is determined.

[0006] Preferably, in S2, the carbon monoxide concentration value The carbon monoxide concentration value obtained by sampling at any sampling point in the storage environment; Concentration Fluctuation Value By formula Calculate, where For the The carbon monoxide concentration value at each sampling point is ; when and The storage environment is safe; when or When the storage environment is in the first level warning, calculate the ventilation adjustment coefficient , and Active ventilation is carried out according to the ventilation volume, and the subsequent warning level is determined according to the changes in the carbon monoxide concentration and concentration fluctuation value after ventilation; when or When the storage environment is in deep warning, it is necessary to suspend the storage of hazardous waste, find the source of leakage and ventilate the environment completely.

[0007] Preferably, in S3, the comprehensive safety value of the storage environment The calculation formula is: ; in, , , is the maximum value of concentration fluctuation in historical monitoring. and is the weight coefficient and , weight coefficient and Adjust according to the sensitivity of the carbon monoxide storage environment to the concentration value and concentration fluctuation value, and increase the value of the environment that is more sensitive to concentration value changes. , reduce The opposite is true for environments that are more sensitive to changes in concentration fluctuations.

[0008] Preferably, in S5, the carbon monoxide gas partial pressure value is ,in, is the absolute pressure value under standard conditions; Carbon monoxide leakage rate in storage environment ,in, is the flow coefficient, is the leakage area, is the atmospheric pressure, is the air density of the storage environment; Storage environment carbon monoxide gas density ; Flow coefficient According to the shape, size and roughness of the leak, the circular leak ,in, is the leakage diameter, is the length of the leak port. For non-circular leak ports, first calculate the equivalent diameter ,in, is the cross-sectional area of ​​the leakage port, is the circumference of the leak.

[0009] Preferably, in said S6, under stable meteorological conditions, the geographical coordinates of the initial leakage location of the storage environment are used and carbon monoxide gas density , the leakage diffusion trajectory of carbon monoxide is calculated by the Gaussian diffusion model of carbon monoxide concentration, and the leakage diffusion trajectory of a certain point downwind is The concentration of carbon monoxide The calculation formula is: ; in, The source of carbon monoxide leakage is strong. is the average wind speed, and are the horizontal and vertical diffusion parameters, respectively, is the effective height of the leakage source.

[0010] Preferably, the horizontal diffusion parameter and vertical diffusion parameter According to the atmospheric stability level and downwind distance Sure.

[0011] Preferably, the carbon monoxide leakage source strength According to the leakage rate and carbon monoxide gas density Calculation, the formula is ,in, is the leakage area.

[0012] Preferably, in S6, when the meteorological conditions are unstable, the Gaussian diffusion model of carbon monoxide concentration is corrected by introducing a time correction factor and spatial correction factor , the corrected concentration calculation formula is: ; Among them, the time correction factor The spatial correction factor is determined based on the time rate of change of wind speed and the intensity of atmospheric turbulence. It is determined based on the spatial factors of terrain undulation and distribution of surrounding buildings.

[0013] A hazardous waste storage environment safety early warning system, comprising: A real-time carbon monoxide concentration monitoring module is used to obtain real-time concentration distribution values ​​and concentration change values ​​in the storage environment; A dual-indicator safety early warning model construction module is used to construct and monitor the absolute value of the difference between the real-time concentration and the storage environment threshold and the concentration change value; The storage environment safety warning module monitors the carbon monoxide concentration and concentration fluctuation in the hazardous waste storage environment in real time, and issues a safety warning for the storage environment based on the set safety concentration value; The carbon monoxide leakage warning module uses the carbon monoxide leakage model to simulate the diffusion process according to the leakage location, speed and gas leakage concentration, and generates a visual gas concentration diffusion trajectory prediction; Data storage and analysis module, which stores monitoring data, model parameters and early warning information, and performs data analysis to provide a basis for system optimization and adjustment; The emergency response module activates the emergency response mechanism and coordinates personnel and equipment for emergency handling when the storage environment reaches level one or deep warning.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses dual-indicator early warning monitoring to monitor the concentration value and concentration fluctuation value of carbon monoxide in real time, and conducts graded early warning according to different set thresholds, which can timely discover potential dangerous trends in the hazardous waste storage environment, and solve the problems of the existing medical waste storage environment safety early warning that cannot timely and accurately detect potential safety hazards, it is difficult to scientifically evaluate environmental safety, and it is impossible to accurately grasp the diffusion situation when a leak occurs.

[0015] 2. The comprehensive safety assessment link of the present invention calculates the comprehensive safety value of the storage environment and compares it with the comprehensive safety value threshold to determine whether the storage environment is safe from multiple dimensions. This not only takes into account the real-time concentration and concentration fluctuation, but also adjusts the weight coefficient according to the sensitivity of the environment to the concentration value and the concentration fluctuation value, further improving the accuracy of the safety assessment, and can more accurately assess the safety status of the storage environment of medical waste and hazardous waste, providing a more reliable basis for taking preventive measures in advance.

[0016] 3. When hazardous waste leaks, the present invention obtains relevant parameters to calculate the leakage parameters and leakage diffusion trajectory, and determines the distribution of carbon monoxide concentrations at different locations. This helps to quickly and accurately grasp the diffusion range of hazardous waste when a leakage accident occurs, and provides strong support for the formulation of scientific and reasonable emergency treatment plans, thereby more effectively reducing the harm caused by leakage accidents to personnel and the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the method flow of the present invention; Figure 2 Schematic diagram of the system framework of the present invention. DETAILED DESCRIPTION

[0018] In order to facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention is further described in conjunction with the accompanying drawings of the specification.

[0019] Embodiment 1, as Figure 1 As shown, a hazardous waste storage environment safety early warning method includes the following steps: S1. Basic parameter setting; Set the concentration range of carbon monoxide in the storage environment to , safe concentration value , concentration fluctuation threshold , the upper limit of the first-level warning concentration , Fluctuation value secondary threshold And the comprehensive safety value threshold ; S2, dual-indicator early warning monitoring; Real-time monitoring of carbon monoxide concentration and concentration fluctuation , and carry out graded warnings for the storage environment based on the set parameters. When the concentration value or fluctuation value reaches different thresholds, different levels of warnings are triggered and corresponding ventilation measures are taken; S3, comprehensive safety assessment; By calculating the comprehensive security value of the storage environment ,Will and comprehensive safety value threshold Make comparisons to determine whether the storage environment is safe; S4, obtaining initial leakage parameters; Obtain the relative air pressure value at the storage environment location when carbon monoxide leaks With ambient temperature ; S5, calculating leakage parameters; According to the relative air pressure value obtained and ambient temperature , calculate the partial pressure of carbon monoxide gas , leakage rate and gas density ; S6, calculating the leakage diffusion trajectory; Use the geographic coordinates of the initial leak in the storage environment and carbon monoxide gas density , the leakage diffusion trajectory of carbon monoxide is calculated through the Gaussian diffusion model of carbon monoxide concentration, and the distribution of carbon monoxide concentration at different locations is determined.

[0020] In the embodiment of the present invention, in S1, the concentration value range is Determined based on the properties of carbon monoxide and relevant national safety standards and industry specifications; Safety concentration value The selection should be made by comprehensively considering factors such as safety margin of hazardous waste, ventilation conditions of storage environment, and accuracy of monitoring equipment; Concentration fluctuation threshold Obtained through statistical analysis of historical monitoring data; Level 1 warning concentration upper limit Set at a safe concentration and concentrations that may cause danger; Fluctuation value secondary threshold Greater than the concentration fluctuation threshold ; Comprehensive safety value threshold It is obtained by training machine learning algorithms on large amounts of historical data.

[0021] In the embodiment of the present invention, in S2, the carbon monoxide concentration value The carbon monoxide concentration value obtained by sampling at any sampling point in the storage environment; Concentration Fluctuation Value By formula Calculate, where For the The carbon monoxide concentration value at each sampling point is ; when and The storage environment is safe; when or When the storage environment is in the first level warning, calculate the ventilation adjustment coefficient , and Active ventilation is carried out according to the ventilation volume, and the subsequent warning level is determined according to the changes in the carbon monoxide concentration and concentration fluctuation value after ventilation; when or When the storage environment is in deep warning, it is necessary to suspend the storage of hazardous waste, find the source of leakage and ventilate the environment completely. The distribution of sampling points follows the principle of uniform distribution in the storage area, encryption near possible leakage sources, and consideration of the spatial structure of the storage environment to avoid monitoring blind spots.

[0022] In the embodiment of the present invention, in S3, the comprehensive security value of the storage environment The calculation formula is: ; in, , , is the maximum value of concentration fluctuation in historical monitoring. and is the weight coefficient and , weight coefficient and Adjust according to the sensitivity of the carbon monoxide storage environment to the concentration value and concentration fluctuation value, and increase the value of the environment that is more sensitive to concentration value changes. , reduce The opposite is true for environments that are more sensitive to concentration fluctuations, and the weight coefficients are regularly evaluated and optimized.

[0023] In the embodiment of the present invention, in S5, the carbon monoxide gas partial pressure value ,in, is the absolute pressure value under standard conditions; Carbon monoxide leakage rate in storage environment ,in, is the flow coefficient, is the leakage area, is the atmospheric pressure, is the air density of the storage environment; Storage environment carbon monoxide gas density ; Flow coefficient According to the shape, size and roughness of the leak, the circular leak ,in, is the leakage diameter, is the length of the leak port. For non-circular leak ports, first calculate the equivalent diameter ,in, is the cross-sectional area of ​​the leakage port, is the circumference of the leak.

[0024] In the embodiment of the present invention, in S6, under stable meteorological conditions, the geographic coordinates of the initial leakage location of the storage environment are used. and carbon monoxide gas density , the leakage diffusion trajectory of carbon monoxide is calculated by the Gaussian diffusion model of carbon monoxide concentration, and the leakage diffusion trajectory of a certain point downwind is The concentration of carbon monoxide The calculation formula is: ; in, The source of carbon monoxide leakage is strong. is the average wind speed, and are the horizontal and vertical diffusion parameters, respectively, is the effective height of the leakage source.

[0025] In an embodiment of the present invention, the horizontal diffusion parameter and vertical diffusion parameter According to the atmospheric stability level and downwind distance It is determined that the atmospheric stability level is divided into six levels, AF, and different levels correspond to different empirical formulas to calculate the diffusion parameters, such as for the Pasquill-Gifford diffusion parameter model; When the atmospheric stability is Class A, , ; When the atmospheric stability is Class B, , .

[0026] In an embodiment of the present invention, the carbon monoxide leakage source strength According to the leakage rate and carbon monoxide gas density Calculation, the formula is ,in, is the leakage area.

[0027] In the embodiment of the present invention, in S6, when the meteorological conditions are unstable, the Gaussian diffusion model of carbon monoxide concentration is corrected and a time correction factor is introduced. and spatial correction factor , the corrected concentration calculation formula is: ; Among them, the time correction factor The spatial correction factor is determined based on the time rate of change of wind speed and the intensity of atmospheric turbulence. It is determined based on the spatial factors of terrain undulation and distribution of surrounding buildings.

[0028] Embodiment 2, as Figure 2 As shown, a hazardous waste storage environment safety early warning system includes: A real-time carbon monoxide concentration monitoring module is used to obtain real-time concentration distribution values ​​and concentration change values ​​in the storage environment; A dual-indicator safety early warning model construction module is used to construct and monitor the absolute value of the difference between the real-time concentration and the storage environment threshold and the concentration change value; The storage environment safety warning module monitors the carbon monoxide concentration and concentration fluctuation in the hazardous waste storage environment in real time, and issues a safety warning for the storage environment based on the set safety concentration value; The carbon monoxide leakage warning module uses the carbon monoxide leakage model to simulate the diffusion process according to the leakage location, speed and gas leakage concentration, and generates a visual gas concentration diffusion trajectory prediction; Data storage and analysis module, which stores monitoring data, model parameters and early warning information, and performs data analysis to provide a basis for system optimization and adjustment; The emergency response module activates the emergency response mechanism and coordinates personnel and equipment for emergency handling when the storage environment reaches level one or deep warning.

[0029] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A hazardous waste storage environment safety early warning method, characterized in that: The following steps are involved: S1. Basic parameter setting; Set the concentration range of carbon monoxide in the storage environment to , safe concentration value , concentration fluctuation threshold , the upper limit of the first-level warning concentration , Fluctuation value secondary threshold And the comprehensive safety value threshold ; S2, dual-indicator early warning monitoring; Real-time monitoring of carbon monoxide concentration and concentration fluctuation , and carry out graded warnings for the storage environment based on the set parameters. When the concentration value or fluctuation value reaches different thresholds, different levels of warnings are triggered and corresponding ventilation measures are taken; S3, comprehensive safety assessment; By calculating the comprehensive security value of the storage environment ,Will and comprehensive safety value threshold Make comparisons to determine whether the storage environment is safe; S4, obtaining initial leakage parameters; Obtain the relative air pressure value at the storage environment location when carbon monoxide leaks With ambient temperature ; S5, calculating leakage parameters; According to the relative air pressure value obtained and ambient temperature , calculate the partial pressure of carbon monoxide gas , leakage rate and gas density ; S6, calculating the leakage diffusion trajectory; Use the geographic coordinates of the initial leak in the storage environment and carbon monoxide gas density , the leakage diffusion trajectory of carbon monoxide is calculated through the Gaussian diffusion model of carbon monoxide concentration, and the distribution of carbon monoxide concentration at different locations is determined.

2. A hazardous waste storage environment safety early warning method according to claim 1, characterized in that: In S2, the carbon monoxide concentration value The carbon monoxide concentration value obtained by sampling at any sampling point in the storage environment; Concentration Fluctuation Value By formula Calculate, where For the The carbon monoxide concentration value at each sampling point is ; when and The storage environment is safe; when or When the storage environment is in the first level warning, calculate the ventilation adjustment coefficient , and Active ventilation is carried out according to the ventilation volume, and the subsequent warning level is determined according to the changes in the carbon monoxide concentration and concentration fluctuation value after ventilation; when or When the storage environment is in deep warning, it is necessary to suspend the storage of hazardous waste, find the source of leakage and ventilate the environment completely.

3. A hazardous waste storage environment safety early warning method according to claim 2, characterized in that: In the S3, the comprehensive security value of the storage environment The calculation formula is: ； in, , , is the maximum value of concentration fluctuation in historical monitoring. and is the weight coefficient and , weight coefficient and Adjust according to the sensitivity of the carbon monoxide storage environment to the concentration value and concentration fluctuation value, and increase the value of the environment that is more sensitive to concentration value changes. , reduce The opposite is true for environments that are more sensitive to changes in concentration fluctuations.

4. A hazardous waste storage environment safety early warning method according to claim 3, characterized in that: In S5, the carbon monoxide gas partial pressure value ,in, is the absolute pressure value under standard conditions; Carbon monoxide leakage rate in storage environment ,in, is the flow coefficient, is the leakage area, is the atmospheric pressure, is the air density of the storage environment; Carbon monoxide gas density in storage environment ; Flow coefficient According to the shape, size and roughness of the leak, the circular leak ,in, is the leakage diameter, is the length of the leak port. For non-circular leak ports, first calculate the equivalent diameter ,in, is the cross-sectional area of ​​the leakage port, is the circumference of the leak.

5. A hazardous waste storage environment safety early warning method according to claim 4, characterized in that: In S6, under stable meteorological conditions, the geographical coordinates of the initial leakage location of the storage environment are used. and carbon monoxide gas density , the leakage diffusion trajectory of carbon monoxide is calculated by the Gaussian diffusion model of carbon monoxide concentration, and the leakage diffusion trajectory of a certain point downwind is The concentration of carbon monoxide The calculation formula is: ； in, The source of carbon monoxide leakage is strong. is the average wind speed, and are the horizontal and vertical diffusion parameters, respectively, is the effective height of the leakage source.

6. A hazardous waste storage environment safety early warning method according to claim 5, characterized in that: The horizontal diffusion parameter and vertical diffusion parameter According to the atmospheric stability level and downwind distance Sure.

7. A hazardous waste storage environment safety early warning method according to claim 6, characterized in that: The carbon monoxide leakage source strength According to the leakage rate and carbon monoxide gas density Calculation, the formula is ,in, is the leakage area.

8. A hazardous waste storage environment safety early warning method according to claim 7, characterized in that: In S6, when the meteorological conditions are unstable, the Gaussian diffusion model of carbon monoxide concentration is corrected by introducing a time correction factor and spatial correction factor , the corrected concentration calculation formula is: ； Among them, the time correction factor The spatial correction factor is determined based on the time rate of change of wind speed and the intensity of atmospheric turbulence. It is determined based on the spatial factors of terrain undulation and distribution of surrounding buildings.

9. A system applied to a hazardous waste storage environment safety early warning method as claimed in claim 8, characterized in that: include: A real-time carbon monoxide concentration monitoring module is used to obtain real-time concentration distribution values ​​and concentration change values ​​in the storage environment; A dual-indicator safety early warning model construction module is used to construct and monitor the absolute value of the difference between the real-time concentration and the storage environment threshold and the concentration change value; The storage environment safety warning module monitors the carbon monoxide concentration and concentration fluctuation in the hazardous waste storage environment in real time, and issues a safety warning for the storage environment based on the set safety concentration value; The carbon monoxide leakage warning module uses the carbon monoxide leakage model to simulate the diffusion process according to the leakage location, speed and gas leakage concentration, and generates a visual gas concentration diffusion trajectory prediction; Data storage and analysis module, which stores monitoring data, model parameters and early warning information, and performs data analysis to provide a basis for system optimization and adjustment; The emergency response module activates the emergency response mechanism and coordinates personnel and equipment for emergency handling when the storage environment reaches level one or deep warning.

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