Harbor dangerous cargo container yard environment risk identification method

Abstract

The invention provides a harbor dangerous cargo container yard environment risk identification method, and belongs to the technical field of environment risk assessment. The method comprises the following steps: firstly, reading and preprocessing the environmental risk identification basic data of the harbor dangerous cargo container yard, and then calculating a first environmental risk provider EQ1 and a second environmental risk provider EQ2 of an environmental measurement sample based on the preprocessed basic data; and comparing the larger value of the EQ1 and the EQ2 with a preset threshold value, and finally generating a harbor dangerous cargo container yard environment risk identification result according to a comparison result. Through calculation of the first environment risk quotient EQ1 and the second environment risk quotient EQ2, the problem that the concentration of harmful substances is over-evaluated or under-evaluated in existing calculation is solved; in addition, the sampling rate and the sampling time are equivalent to the diffusion mode of harmful substances in the environment, so that the calculation burden can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental risk assessment, and in particular relates to a method for identifying environmental risks in a port dangerous goods container yard. Background Art

[0002] Dangerous goods containers at ports are subject to a series of environmental risks, including leakage of hazardous substances, fire and explosion, and splashing of substances into the sea caused by explosion. In the event of leakage, fire or explosion, associated / secondary hazardous substances are easily generated, such as CO, NO2, SO2, HCN, PH3, HCl, HF and other incompletely burned harmful substances. Some gaseous harmful substances can directly diffuse into the atmosphere; some harmful substances release toxic, harmful or flammable gases and diffuse when they come into contact with water after leakage; some liquid harmful substances diffuse directly into the seawater; some solid harmful substances sink to the seabed and affect the seabed sediments... In short, harmful substances have adverse effects on environmentally sensitive targets and may even lead to other more serious consequences such as casualties.

[0003] In the prior art, the environmental risk quotient (ERQ) is usually used to evaluate the concentration of harmful substances in a certain environmental sampling medium (mainly sampling seawater as a sample) to complete the identification of environmental risks. Although the above environmental risk quotient only needs to predict the no-effect concentration value to obtain, and the algorithm is simple, it is precisely because it only relies on the single input variable of the predicted no-effect concentration value that it is easy to over-evaluate or under-evaluate the concentration of harmful substances in the environmental medium, resulting in inaccurate identification of harmful substance concentrations, affecting the identification results of environmental risks; the above predicted no-effect concentration value is also easily interfered by other detection factors, resulting in deviations in the identification results of environmental risks; in addition, the calculation of the predicted no-effect concentration value requires a large number of integral operations, which is large in calculation and easily affects the efficiency of environmental risk identification. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention proposes a method for identifying environmental risks of a port dangerous goods container yard, so as to improve the identification accuracy and efficiency of environmental risks of a port dangerous goods container yard, at least to a certain extent.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a method for identifying environmental risks of port dangerous goods container yards, comprising: S1: using a data reading module to read basic data for identifying environmental risks of port dangerous goods container yards; S2: sending the basic data to a data analysis module and preprocessing it; S3: in the data analysis module, based on the preprocessed basic data, calculating the first environmental risk quotient EQ1 and the second environmental risk quotient EQ2 of the environmental measurement sample; and sending the first environmental risk quotient EQ1 and the second environmental risk quotient EQ2 to a risk identification module; S4: in the risk identification module, taking the larger value of EQ1 and EQ2 and comparing it with a preset threshold to obtain a comparison result, and generating an environmental risk identification result of a port dangerous goods container yard based on the comparison result.

[0006] Furthermore, the basic data for identifying environmental risks of dangerous goods container yards at ports is read in S1, specifically including: S11: determining the types and quantities of harmful substances causing environmental risks; S12: obtaining the half-maximum effect concentrations of different harmful substances, and using the half-maximum effect concentrations as basic data.

[0007] Furthermore, in S3, the first environmental risk quotient is calculated according to the following formula: ; Where EQ1 represents the first environmental risk quotient, m represents the environmental risk monitoring point number, n1 represents the total number of environmental risk monitoring points, i represents the hazardous substance number, n2 represents the total number of hazardous substances, AF represents the environmental risk identification constant, min() represents the minimum value function, ECHF m,i MPEC represents the half maximum effect concentration of the ith hazardous substance at the mth environmental risk monitoring point. m,i Represents the improved expected environmental concentration of the ith hazardous substance at the mth environmental risk monitoring point.

[0008] Furthermore, in S3, the second environmental risk quotient is calculated according to the following formula: ; Wherein, EQ2 represents the second environmental risk quotient, and max() represents the maximum value function. Furthermore, the improved expected environmental concentration MPECi is specifically calculated using the following formula: ; MC m,i represents the amount of the i-th hazardous substance in the sample measured at the m-th environmental risk monitoring point, VS m,irepresents the volume of the ith hazardous substance measurement sample of the mth environmental risk monitoring point, K represents the improved expected environmental concentration calculation coefficient, SR m,i represents the sampling rate of the ith hazardous substance in the sample measured at the mth environmental risk monitoring point, t m,i It represents the sampling time of the i-th hazardous substance in the sample measured at the m-th environmental risk monitoring point, and EXP() represents an exponential function with the natural constant e as the base.

[0009] Furthermore, the environmental risk identification constant AF is taken as 1000; and the improved expected environmental concentration calculation coefficient K is taken as 5.3.

[0010] Further, the preset thresholds in S4 include a first preset threshold, a second preset threshold, a third preset threshold and a fourth preset threshold, the first preset threshold is less than the second preset threshold, the second preset threshold is less than the third preset threshold, and the third preset threshold is less than the fourth preset threshold. The first preset threshold is preferably 0.01, the second preset threshold is preferably 0.1, the third preset threshold is preferably 0.5, and the fourth preset threshold is preferably 1.

[0011] Further, in S4, the larger value of EQ1 and EQ2 is compared with the preset threshold to obtain a comparison result, and the port dangerous goods container yard environmental risk identification result is generated according to the comparison result, specifically: when the larger value of EQ1 and EQ2 is greater than the fourth preset threshold, the port dangerous goods container yard environmental risk identification result is high risk; when the larger value of EQ1 and EQ2 is greater than the third preset threshold and less than or equal to the fourth preset threshold, the port dangerous goods container yard environmental risk identification result is medium-high risk; when the larger value of EQ1 and EQ2 is greater than the second preset threshold and less than or equal to the third preset threshold, the port dangerous goods container yard environmental risk identification result is medium risk; when the larger value of EQ1 and EQ2 is greater than the first preset threshold and less than or equal to the second preset threshold, the port dangerous goods container yard environmental risk identification result is medium-low risk; when the larger value of EQ1 and EQ2 is less than or equal to the first preset threshold, the port dangerous goods container yard environmental risk identification result is low risk.

[0012] Compared with the prior art, the beneficial technical effects of the present invention are as follows: (1) by using different calculation methods, a first environmental risk quotient EQ1 and a second environmental risk quotient EQ2 are obtained, and based on this, environmental risk identification of a port dangerous goods container yard is performed, which can overcome the problem of over-assessment or under-assessment of the concentration of harmful substances in the existing calculations, and improve the identification accuracy of the environmental risk of a port dangerous goods container yard; (2) by improving the calculation method of the predicted no-effect concentration value, using the diffusion mode of harmful substances in the environment equivalent to the sampling rate and sampling time, and by setting a limited sampling time, the calculation burden of the predicted no-effect concentration value can be reduced, and the identification efficiency of the environmental risk of a port dangerous goods container yard can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the implementation of the present invention or the technical solution in the prior art, the following briefly introduces the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0014] Figure 1 This is a simplified structural diagram of the environmental risk identification system for port dangerous goods container yards of the present invention; Figure 2 This is a flow chart of the environmental risk identification method for a port dangerous goods container yard of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0017] Instructions attached Figure 1The schematic diagram of the structure of the environmental risk identification system for the port dangerous goods container yard involved in the present invention is shown, in which a data reading module, a data analysis module and a risk identification module are connected in sequence, wherein the data reading module mainly includes a wireless communication interface for reading the data required for risk identification; the data analysis module and the risk identification module can both adopt a CPU or FPGA architecture, the data analysis module analyzes the data sent by the data reading module, the risk identification module is used to identify risks based on the analysis results, and can warn of different levels of risks through the color of the warning light, for example, when the analysis result identifies a high risk, the warning light is controlled to be red, medium-high risk to be orange, medium risk to be yellow, medium-low risk to be blue, and low risk to be green.

[0018] In conjunction with the instruction manual Figure 2 The present invention proposes a method for identifying environmental risks of dangerous goods container yards in ports, which specifically includes: step S1: using a data reading module to read basic data for identifying environmental risks of dangerous goods container yards in ports; specifically includes: step S11: determining the types and quantities of harmful substances that can cause environmental risks, including but not limited to cyanide, sulfate, chloroform, benzene, arsenic, mercury, hexavalent chromium, etc.; S12: obtaining the half-maximum effect concentration of different harmful substances, and using the half-maximum effect concentration as basic data. The above-mentioned half-maximum effect concentration is an indicator reflecting the toxicity of toxic substances to test organisms, specifically the concentration that can cause 50% of the maximum effect, that is, the dose required for the exogenous substance to cause a 50% change in a certain effect of the body or parasite. Step S2: Send the basic data to the data analysis module and perform preprocessing; the preprocessing mainly includes removing bad data.

[0019] Step S3: In the data analysis module, based on the preprocessed basic data, a first environmental risk quotient EQ1 and a second environmental risk quotient EQ2 of the environmental measurement sample are calculated; and the first environmental risk quotient EQ1 and the second environmental risk quotient EQ2 are sent to the risk identification module; In step S3, the first environmental risk quotient is calculated according to the following formula: ; Wherein EQ1 represents the first environmental risk quotient, m represents the sequence number of the environmental risk monitoring point (the environmental risk monitoring point may include multiple seawater risk monitoring points and / or seabed sediment monitoring points), n1 represents the total number of environmental risk monitoring points, and the total number of environmental risk monitoring points can be flexibly set according to actual needs; i represents the sequence number of the hazardous substance, n2 represents the total number of hazardous substances, AF represents the environmental risk identification constant, min() represents the minimum value function, ECHF m,i MPEC represents the half maximum effect concentration of the ith hazardous substance at the mth environmental risk monitoring point. m,iRepresents the improved expected environmental concentration of the ith harmful substance at the mth environmental risk monitoring point. The first environmental risk quotient EQ1 is to first calculate or identify the concentrations of each harmful substance at each environmental risk monitoring point, then take the minimum value of the above concentrations of each harmful substance, and calculate the environmental risk quotient of the environmental measurement sample based on the minimum value, that is, taking the same harmful substance concentration at each environmental risk monitoring point as the entry point, to obtain the environmental risk quotient of the environmental measurement sample, recorded as the first environmental risk quotient.

[0020] In step S3, the second environmental risk quotient is calculated according to the following formula: ; Among them, EQ2 represents the second environmental risk quotient, and max() represents the maximum value function. The above-mentioned first environmental risk quotient EQ2 is to first calculate or identify the concentrations of each harmful substance at each environmental risk monitoring point and sum them, take the maximum value of the sum value and use the maximum value as the environmental risk quotient of the environmental measurement sample, that is, take the sum of the concentrations of each harmful substance at a certain environmental risk monitoring point as the entry point, obtain the environmental risk quotient of the environmental measurement sample, and record it as the second environmental risk quotient.

[0021] It should be noted that the calculation of the first environmental risk quotient and the second environmental risk quotient in the present invention actually involves a comprehensive assessment of multiple environmental risk monitoring points and multiple hazardous substance concentrations, which can play a role in diversified assessment, thereby avoiding the problem of over-assessment or under-assessment of hazardous substance concentrations that may result from using a single predicted no-effect concentration value, and improving the accuracy of environmental risk identification.

[0022] The above improved expected environmental concentration MPECi is calculated using the following formula: ; MC m,i represents the amount of the i-th hazardous substance in the sample measured at the m-th environmental risk monitoring point, VS m,i represents the volume of the ith hazardous substance measurement sample of the mth environmental risk monitoring point, K represents the improved expected environmental concentration calculation coefficient, SR m,i represents the sampling rate of the ith hazardous substance in the sample measured at the mth environmental risk monitoring point, t m,i It represents the sampling time of the ith harmful substance in the sample measured at the mth environmental risk monitoring point, and EXP() represents the exponential function with the natural constant e as the base. By using the sampling rate and sampling time in the above formula to equate the nonlinear characteristics of the diffusion of harmful substances into the environment within a certain period of time, and by setting a limited sampling time, the calculation burden of predicting the no-effect concentration value can be reduced, and ultimately the purpose of improving the efficiency of identifying environmental risks can be achieved.

[0023] Step S4: In the risk identification module, the larger value of EQ1 and EQ2 is compared with a preset threshold to obtain a comparison result, and a port dangerous goods container yard environmental risk identification result is generated according to the comparison result.

[0024] As a preferred embodiment of the present invention, the above-mentioned environmental risk identification constant AF can be set to 1000; and the improved expected environmental concentration calculation coefficient K can be set to 5.3.

[0025] As a preferred embodiment of the present invention, the preset thresholds in the above step S4 include a first preset threshold, a second preset threshold, a third preset threshold and a fourth preset threshold, the first preset threshold is less than the second preset threshold, the second preset threshold is less than the third preset threshold, and the third preset threshold is less than the fourth preset threshold. The first preset threshold is preferably 0.01, the second preset threshold is preferably 0.1, the third preset threshold is preferably 0.5, and the fourth preset threshold is preferably 1.

[0026] The larger value of EQ1 and EQ2 is compared with the preset threshold to obtain a comparison result, and the port dangerous goods container yard environmental risk identification result is generated according to the comparison result: when the larger value of EQ1 and EQ2 is greater than the fourth preset threshold, the port dangerous goods container yard environmental risk identification result is high risk; when the larger value of EQ1 and EQ2 is greater than the third preset threshold and less than or equal to the fourth preset threshold, the port dangerous goods container yard environmental risk identification result is medium-high risk; when the larger value of EQ1 and EQ2 is greater than the second preset threshold and less than or equal to the third preset threshold, the port dangerous goods container yard environmental risk identification result is medium risk; when the larger value of EQ1 and EQ2 is greater than the first preset threshold and less than or equal to the second preset threshold, the port dangerous goods container yard environmental risk identification result is medium-low risk; when the larger value of EQ1 and EQ2 is less than or equal to the first preset threshold, the port dangerous goods container yard environmental risk identification result is low risk.

[0027] It is understandable that the environmental risk identification method for the port dangerous goods container yard of the present invention needs to use the half-maximum effect concentration of various harmful substances as the basis for the implementation of the program. The above half-maximum effect concentration can be determined by PRISM software or by SPSS statistical analysis software.

[0028] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any form. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

[0029] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A method for identifying environmental risks in a port dangerous goods container yard, characterized in that: The specific steps include: S1: Use the data reading module to read the basic data for environmental risk identification of the port's dangerous goods container yard; S2: Sending the basic data to a data analysis module for preprocessing; S3: In the data analysis module, based on the preprocessed basic data, a first environmental risk quotient EQ1 and a second environmental risk quotient EQ2 of the environmental measurement sample are calculated; and the first environmental risk quotient EQ1 and the second environmental risk quotient EQ2 are sent to the risk identification module; S4: In the risk identification module, the larger value of EQ1 and EQ2 is compared with a preset threshold to obtain a comparison result, and based on the comparison result, a port dangerous goods container yard environmental risk identification result is generated.

2. A method for identifying environmental risks in a port dangerous goods container yard as claimed in claim 1, characterized in that: The basic data for identifying environmental risks in the port dangerous goods container yard is read in S1, specifically including: S11: Determine the types and quantities of hazardous substances that pose environmental risks; S12: Obtaining half-maximum effect concentrations of different harmful substances, and using the half-maximum effect concentrations as basic data.

3. A method for identifying environmental risks of a port dangerous goods container yard as claimed in claim 2, characterized in that: In S3, the first environmental risk quotient is calculated according to the following formula (1): （1）； Where EQ1 represents the first environmental risk quotient, m represents the environmental risk monitoring point number, n1 represents the total number of environmental risk monitoring points, i represents the hazardous substance number, n2 represents the total number of hazardous substances, AF represents the environmental risk identification constant, min() represents the minimum value function, ECHF m,i MPEC represents the half maximum effect concentration of the ith hazardous substance at the mth environmental risk monitoring point. m,i Represents the improved expected environmental concentration of the ith hazardous substance at the mth environmental risk monitoring point.

4. A method for identifying environmental risks of a port dangerous goods container yard as claimed in claim 3, characterized in that: In S3, the second environmental risk quotient is calculated according to the following formula (2): （2）； Wherein, EQ2 represents the second environmental risk quotient, and max() represents the maximum value function.

5. A method for identifying environmental risks in a port dangerous goods container yard as claimed in claim 3 or 4, characterized in that: The improved expected environmental concentration MPEC i The specific calculation is done using the following formula (3): （3）； Among them, MC m,i represents the amount of the i-th hazardous substance in the sample measured at the m-th environmental risk monitoring point, VS m,i represents the volume of the ith hazardous substance measurement sample of the mth environmental risk monitoring point, K represents the improved expected environmental concentration calculation coefficient, SR m,i represents the sampling rate of the ith hazardous substance in the sample measured at the mth environmental risk monitoring point, t m,i It represents the sampling time of the i-th hazardous substance in the sample measured at the m-th environmental risk monitoring point, and EXP() represents an exponential function with the natural constant e as the base.

6. A method for identifying environmental risks in a port dangerous goods container yard as claimed in claim 4, characterized in that: The environmental risk identification constant AF is set to 1000.

7. A method for identifying environmental risks in a port dangerous goods container yard as claimed in claim 5, characterized in that: The improved expected environmental concentration calculation coefficient K is taken as 5.

3.

8. A method for identifying environmental risks in a port dangerous goods container yard as claimed in claim 6, characterized in that: The preset thresholds in S4 include a first preset threshold, a second preset threshold, a third preset threshold and a fourth preset threshold, the first preset threshold is less than the second preset threshold, the second preset threshold is less than the third preset threshold, and the third preset threshold is less than the fourth preset threshold.

9. A method for identifying environmental risks in a port dangerous goods container yard as claimed in claim 8, characterized in that: The first preset threshold is 0.01, the second preset threshold is 0.1, the third preset threshold is 0.5, and the fourth preset threshold is 1.

10. A method for identifying environmental risks in a port dangerous goods container yard as claimed in claim 9, characterized in that: In the S4, the larger value of EQ1 and EQ2 is compared with the preset threshold to obtain a comparison result, and the port dangerous goods container yard environmental risk identification result is generated according to the comparison result, specifically: when the larger value of EQ1 and EQ2 is greater than the fourth preset threshold, the port dangerous goods container yard environmental risk identification result is high risk; when the larger value of EQ1 and EQ2 is greater than the third preset threshold and less than or equal to the fourth preset threshold, the port dangerous goods container yard environmental risk identification result is medium-high risk; when the larger value of EQ1 and EQ2 is greater than the second preset threshold and less than or equal to the third preset threshold, the port dangerous goods container yard environmental risk identification result is medium risk; when the larger value of EQ1 and EQ2 is greater than the first preset threshold and less than or equal to the second preset threshold, the port dangerous goods container yard environmental risk identification result is medium-low risk; when the larger value of EQ1 and EQ2 is less than or equal to the first preset threshold, the port dangerous goods container yard environmental risk identification result is low risk.

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