A method and device for determining hazardous characteristics of buried solid waste in contaminated sites

Abstract

The present invention provides a method and device for determining the hazardous characteristics of buried solid waste in a contaminated site, belonging to the technical field of solid waste management. The method comprises: determining the risk level of buried solid waste in a contaminated site, and performing characteristic detection on multiple samples of buried solid waste to determine the number of samples of buried solid waste that exceed the standard; and then determining whether the buried solid waste is hazardous waste based on the risk level and the number of samples that exceed the standard. The method has wider applicability, can flexibly and reasonably determine the hazardous characteristics of buried solid waste, and is helpful for the management of hazardous waste.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste management, and in particular to a method and device for determining hazardous characteristics of buried solid waste in a contaminated site. Background Art

[0002] In contaminated sites, buried solid waste needs to be transported out, and before transportation, it is necessary to determine whether it is hazardous waste based on sample test results so that it can be used and disposed of in a standardized manner later.

[0003] At present, the number of samples specified in the relevant test result judgment plan is relatively limited, and may not be able to detect the hazardous characteristics of buried solid waste, which may lead to subsequent incorrect disposal of buried solid waste and is not conducive to the management of hazardous waste. Summary of the invention

[0004] The present invention proposes a method and device for determining hazardous characteristics of buried solid waste in a contaminated site, which has wider applicability, can flexibly and reasonably determine the hazardous characteristics of buried solid waste, and is helpful for the management of hazardous waste.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a method for determining hazardous characteristics of buried solid waste in a contaminated site, comprising:

[0007] Determine the risk level of buried solid wastes in the contaminated site; the risk level of buried solid wastes is used to indicate the possibility that buried solid wastes are hazardous wastes, and the risk levels include low risk and high risk;

[0008] Conduct characteristic tests on multiple samples of the buried solid waste to be tested, and determine the number of samples of the buried solid waste to be tested that exceed the standard;

[0009] When the risk level of the buried solid waste is low risk, and the lower limit of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be tested does not exist in the preset lower limit of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be tested, determine a first lower limit of the number of samples exceeding the standard, which is the lower limit of the number of samples exceeding the standard corresponding to the number of samples among the multiple sample numbers that is smaller than the number of samples of the buried solid waste to be tested and has the smallest difference with the number of samples of the buried solid waste to be tested; if the number of samples exceeding the standard of the buried solid waste to be tested is greater than or equal to the first lower limit of the number of samples exceeding the standard, determine that the buried solid waste to be tested is hazardous waste; otherwise, determine that the buried solid waste to be tested is non-hazardous waste;

[0010] When the risk level of buried solid waste is high risk and the lower limit value of the number of samples exceeding the standard corresponding to the number of samples of buried solid waste to be tested does not exist in the lower limit value of the number of samples exceeding the standard corresponding to the preset multiple number of samples of buried solid waste, a second lower limit value of the number of samples exceeding the standard is determined, and the second lower limit value of the number of samples exceeding the standard is generated based on the preset lower limit values ​​of the number of samples exceeding the standard corresponding to the multiple number of samples of buried solid waste; if the number of samples exceeding the standard of the buried solid waste to be tested is greater than or equal to the second lower limit value of the number of samples exceeding the standard, the buried solid waste to be tested is determined to be hazardous waste; otherwise, the buried solid waste to be tested is determined to be non-hazardous waste.

[0011] Description: The method for determining the hazardous characteristics of buried solid waste provided by the present invention is to classify the buried solid waste in the contaminated site into risk levels, and for buried solid wastes of different risk levels, when there is no lower limit value of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be detected in the existing hazardous waste identification standards, different methods are used to determine the lower limit value of the number of samples exceeding the standard, and determine whether the buried solid waste is hazardous waste based on the lower limit value of the number of samples exceeding the standard. Therefore, the method provided by the present invention has a wider applicability, can flexibly and reasonably determine the hazardous characteristics of buried solid waste, can improve the accuracy of the determination results of the hazardous characteristics of buried solid waste, and help manage hazardous waste.

[0012] In an implementation of the first aspect, the lower limit of the number of samples exceeding the second standard is determined by at least one of the following methods:

[0013] Method 1: The lower limit of the number of samples exceeding the standard is the product of the number of samples of the buried solid waste to be tested and the first preset exceeding standard rate;

[0014] Method 2: The lower limit of the number of samples exceeding the standard is the product of the number of samples of the buried solid waste to be tested and the average of the exceeding rate corresponding to the adjacent numbers;

[0015] Method 3: The second lower limit of the number of samples exceeding the standard is the product of the number of samples of the buried solid waste to be tested and the average exceeding rate of adjacent samples, and the average exceeding rate of adjacent samples is the sum of the lower limits of the number of samples exceeding the standard corresponding to the adjacent samples divided by the sum of the adjacent samples;

[0016] Method 4: The second lower limit value of the number of samples exceeding the standard is obtained by performing linear regression analysis on multiple preset sample numbers of buried solid waste and the lower limit value of the number of samples exceeding the standard.

[0017] Note: For high-risk buried solid waste, the pollution situation is relatively complicated. The use of the above-mentioned methods can reduce treatment costs, facilitate the management of hazardous waste, and improve its rationality and accuracy.

[0018] In an implementation of the first aspect, the buried solid waste includes a first category of solid waste and a second category of solid waste; wherein the first category of solid waste is contaminated soil to be identified as solid waste, and the second category of solid waste is solid waste that is artificially landfilled.

[0019] In an implementation of the first aspect, when the buried solid waste is Class I solid waste, determining the risk level of the buried solid waste in the contaminated site includes:

[0020] Conduct toxicity testing on buried solid wastes in contaminated sites to determine the toxicity exceeding standard rate of buried solid wastes in contaminated sites;

[0021] When the toxicity exceeding standard rate is less than the second preset exceeding standard rate, the risk level of the buried solid waste is determined to be low risk;

[0022] When the toxicity exceeding standard rate is greater than or equal to the second preset exceeding standard rate, the risk level of the buried solid waste is determined to be high risk.

[0023] In an implementation of the first aspect, when the buried solid waste is Class II solid waste, determining the risk level of the buried solid waste in the contaminated site includes:

[0024] Conduct characteristic testing on buried solid waste in contaminated sites;

[0025] If the characteristic test results do not exceed the standard, the risk level of the buried solid waste is determined to be low risk;

[0026] When the characteristic test results exceed the standard, the risk level of buried solid waste is determined to be high risk.

[0027] In an implementation of the first aspect, toxicity detection is performed on the buried solid waste in the contaminated site to determine the toxicity exceeding standard rate of the buried solid waste in the contaminated site, including:

[0028] Determine the solid-soil conversion coefficient of pollutants in buried solid wastes in contaminated sites; the solid-soil conversion coefficient is the conversion coefficient between the content of pollutants in contaminated soil and the content of pollutants in solid wastes; wherein, the content of pollutants in contaminated soil is obtained by testing soil samples using a soil sample pretreatment method, and the content of pollutants in solid waste is obtained by testing soil samples using a solid waste sample pretreatment method;

[0029] The solid-soil conversion coefficient is used to convert the content of pollutants in multiple soil samples in the contaminated site to obtain the content of pollutants in the solid waste in the contaminated site;

[0030] Determine the toxicity excess rate of buried solid waste based on the pollutant content in the solid waste within the contaminated site.

[0031] Note: In the existing methods for detecting the toxicity of contaminated soil, it is usually necessary to first use a soil sample pretreatment method to determine the content of pollutants in the contaminated soil. When the contaminated soil is determined to be solid waste based on the content of pollutants, the contaminated soil is tested using a solid waste sample pretreatment method to determine the content of pollutants in the contaminated soil, and then the toxicity of the contaminated soil is determined based on the content of pollutants. In the case of a large amount of data, this method requires huge manpower and material resources. The above method uses the solid soil conversion coefficient to convert the content of pollutants in the contaminated soil into the content of pollutants in the solid waste, and then determines the toxicity of the contaminated soil based on the solid waste toxicity identification standard, which can save manpower and material resources.

[0032] In a second aspect, the present invention provides a device for determining hazardous characteristics of buried solid waste in a contaminated site, comprising a risk classification module, a detection module and a determination module;

[0033] The risk classification module is used to determine the risk level of buried solid waste in the contaminated site; the risk level of buried solid waste is used to indicate the possibility that the buried solid waste is hazardous waste, and the risk level includes low risk and high risk;

[0034] The detection module is used to perform characteristic detection on multiple samples of buried solid waste to be detected, and determine the number of samples of buried solid waste to be detected that exceed the standard;

[0035] The determination module is used to determine a first lower limit value of the number of samples exceeding the standard when the risk level of the buried solid waste is low risk and the lower limit value of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be detected does not exist in the preset lower limit values ​​of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be detected; if the number of samples exceeding the standard of the buried solid waste to be detected is greater than or equal to the first lower limit value of the number of samples exceeding the standard, the buried solid waste to be detected is determined to be hazardous waste; otherwise, the buried solid waste to be detected is determined to be non-hazardous waste; wherein the first lower limit value of the number of samples exceeding the standard is the lower limit value of the number of samples exceeding the standard corresponding to the number of samples among the multiple sample numbers that is smaller than the number of samples of the buried solid waste to be detected and has the smallest difference with the number of samples of the buried solid waste to be detected;

[0036] The determination module is also used to determine a second lower limit value of the number of samples exceeding the standard when the risk level of the buried solid waste is high risk and the lower limit value of the number of samples exceeding the standard corresponding to the multiple sample numbers of the buried solid waste preset does not include the lower limit value of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be tested; if the number of samples exceeding the standard of the buried solid waste to be tested is greater than or equal to the second lower limit value of the number of samples exceeding the standard, the buried solid waste to be tested is determined to be hazardous waste; otherwise, the buried solid waste to be tested is determined to be non-hazardous waste; wherein the second lower limit value of the number of samples exceeding the standard is generated based on the lower limit value of the number of samples exceeding the standard corresponding to the multiple sample numbers of the buried solid waste preset.

[0037] In an implementation of the second aspect, when the buried solid waste is a first type of solid waste, the risk classification module is specifically used to perform toxicity detection on the buried solid waste in the contaminated site to determine the toxicity exceedance rate of the buried solid waste in the contaminated site; when the toxicity exceedance rate is less than a second preset exceedance rate, the risk level of the buried solid waste is determined to be low risk; when the toxicity exceedance rate is greater than or equal to the second preset exceedance rate, the risk level of the buried solid waste is determined to be high risk.

[0038] In an implementation of the second aspect, the risk division module is specifically used to determine the solid-soil conversion coefficient of pollutants in buried solid waste in a contaminated site, and the solid-soil conversion coefficient is a conversion coefficient between the content of pollutants in the contaminated soil and the content of pollutants in the solid waste; wherein, the content of pollutants in the contaminated soil is the content of pollutants in the soil sample obtained by testing the soil sample using a soil sample pretreatment method, and the content of pollutants in the solid waste is the content of pollutants in the soil sample obtained by testing the soil sample using a solid waste sample pretreatment method; and the solid-soil conversion coefficient is used to convert the content of pollutants in multiple soil samples in the contaminated site to obtain the content of pollutants in the solid waste in the contaminated site; and the toxicity excess rate of the buried solid waste is determined based on the content of pollutants in the solid waste in the contaminated site.

[0039] In an implementation of the second aspect, when the buried solid waste is Class II solid waste, the risk classification module is specifically used to perform characteristic detection on the buried solid waste in the contaminated site; when the characteristic detection result does not exceed the standard, the risk level of the buried solid waste is determined to be low risk; when the characteristic detection result exceeds the standard, the risk level of the buried solid waste is determined to be high risk.

[0040] In a third aspect, the present invention provides an electronic device, comprising a processor and a memory coupled to the processor; the memory is used to store computer instructions, and when the electronic device is running, the processor executes the computer instructions stored in the memory, so that the electronic device executes the method as described in the first aspect or any one of its implementations.

[0041] In a fourth aspect, the present invention provides a computer-readable storage medium, comprising computer program instructions, which, when executed by a computer, enable the computer to execute the method in the first aspect or any one of its implementations.

[0042] In a fifth aspect, the present invention provides a computer program product, comprising computer program instructions, which, when executed on a computer, enable the computer to execute the method in the first aspect or any one of its implementations.

[0043] The technical effects corresponding to the above-mentioned second to fifth aspects and their possible implementations can refer to the above-mentioned description of the technical effects of the first aspect and its possible implementations, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic flow chart of a method for determining hazardous characteristics of buried solid waste provided by an embodiment of the present invention;

[0045] Figure 2 A flow chart of step S101 of a method for determining hazardous characteristics of buried solid waste provided by an embodiment of the present invention;

[0046] Figure 3 A flow chart of step S1011 of a method for determining hazardous characteristics of buried solid waste provided by an embodiment of the present invention;

[0047] Figure 4 A schematic diagram of the structure of a device for determining hazardous characteristics of buried solid waste provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0048] The terms "first" and "second" etc. in the description and claims of the present invention are used to distinguish different objects rather than to describe a specific order of the objects.

[0049] “And / or” in the embodiment of the present invention represents the relationship between objects. For example, A and / or B can represent the following three situations: A exists alone, B exists alone, and A and B exist at the same time.

[0050] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0051] In the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to two or more than two. For example, a plurality of soil samples refers to two or more soil samples.

[0052] The method and device provided in the embodiments of the present invention relate to the field of solid waste management, and can be used to determine whether buried solid waste (i.e., solid waste buried underground) is hazardous waste. Specifically, the risk level of the buried solid waste is first determined, and then different detection schemes are used to make targeted judgments based on different risk levels.

[0053] In one implementation, the method for determining whether buried solid waste is hazardous waste is: to determine whether it is hazardous waste in accordance with the detection and judgment scheme in the "Technical Specifications for Identification of Hazardous Wastes" (HJ298-2019), which stipulates a one-to-one correspondence between the number of samples collected and the lower limit of the number of samples exceeding the standard. However, in actual applications, when determining the hazardous characteristics of buried solid waste in contaminated sites, since the sample collection process of buried solid waste in contaminated sites is limited by the point distribution method and sampling depth, in many cases, the number of samples collected is not within the numerical standards specified in the above-mentioned technical specifications. Therefore, the hazardous characteristics of the buried solid waste cannot be determined.

[0054] In another implementation, if the number of samples collected does not fall within the numerical standards specified in the above-mentioned technical specifications, the hazardous characteristics of the buried solid waste cannot be determined based on the numerical standards specified in the technical specifications. In this case, the hazardous characteristics of the buried solid waste can be determined based on experience. This determination method may result in a lower accuracy in the determination results of the hazardous characteristics.

[0055] In order to solve the problem that the method for determining the hazardous characteristics of buried solid waste in the background technology has limitations, the embodiments of the present invention provide a method and device for determining the hazardous characteristics of buried solid waste in a contaminated site. The buried solid waste in the contaminated site is classified into risk levels, and targeted detection schemes are used to determine whether the buried solid waste of different risk levels is hazardous waste. The method has a wider applicability, can flexibly and reasonably determine the hazardous characteristics of buried solid waste, and is helpful for the management of hazardous waste.

[0056] Exemplarily, a method for determining hazardous characteristics of buried solid waste in a contaminated site provided by an embodiment of the present invention can be performed by an electronic device with a processing function, such as a computer, a server, etc. Taking the electronic device as a computer as an example, the hardware part of the computer may include: a processor, a memory, a network interface, a user interface, a communication bus, etc.

[0057] The processor is used to control the electronic device to perform related processing and computing tasks, such as executing the method for determining the hazardous characteristics of buried solid waste provided in an embodiment of the present invention. The processor may include a central processing unit (CPU) or other processors, and the processor may be single-core or multi-core, for example, the processor may include multiple CPUs.

[0058] The memory is used to store computer instructions and related data. For example, data on risk level classification and data on characteristic detection of multiple samples of buried solid waste, and code for storing and executing the method for determining the hazardous characteristics of buried solid waste provided by the embodiment of the invention. The memory can be a random access memory (RAM), a read only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, or an optical memory, a disk storage medium or other magnetic storage device, or any other medium that can be used to store program code or data that can be accessed by a computer. Optionally, the memory can be integrated into the processor, and the memory can also be independent of the processor.

[0059] The network interface is used for the computer to communicate with other devices or communication networks. The network interface can be a transceiver with transceiver functions. Optionally, the network interface can include a standard wired interface, a wireless interface (such as a WI-FI interface, a Bluetooth interface, a 5G interface).

[0060] The communication bus is used to realize connection and communication between different components. For example, the processor, memory, network interface and user interface mentioned above can be interconnected through the communication bus.

[0061] The user interface may include a display screen and an input unit (such as a keyboard). Optionally, the user interface may also include a standard wired interface and a wireless interface.

[0062] Those skilled in the art will appreciate that the above-mentioned computer may also include more or fewer components, or a combination of certain components, or different arrangements of components, which is not limited in the embodiments of the present invention.

[0063] In combination with the above, the method for determining the hazardous characteristics of landfilled solid waste provided by an embodiment of the present invention is described in detail below.

[0064] like Figure 1 As shown, a method for determining hazardous characteristics of buried solid waste in a contaminated site provided by an embodiment of the present invention includes S101-S104.

[0065] S101. Determine the risk level of buried solid waste in contaminated sites.

[0066] It can be understood that the above-mentioned landfilled solid waste includes the first category of solid waste and the second category of solid waste; among them, the first category of solid waste is contaminated soil to be identified as solid waste, and the second category of solid waste is solid waste that is artificially landfilled.

[0067] The first category of solid waste mentioned above refers to the contaminated soil that is used or disposed of during the process of site remediation or treatment. According to the General Rules for Identification of Solid Wastes (GB13340-2017), "In the process of remediation and treatment of contaminated land, contaminated soil is disposed of or utilized in any of the following ways: 1) landfill; 2) incineration; 3) cement kiln co-disposal; 4) production of bricks, tiles, road construction materials and other building materials." In the embodiment of the present invention, the contaminated soil that is disposed of or utilized as specified in the standard can be referred to as the first category of solid waste.

[0068] The above-mentioned second category of solid waste refers to solid waste that is landfilled artificially (not in accordance with regulations) during environmental pollution incidents. The second category of solid waste is usually solid waste that has not been properly treated or disposed of in accordance with environmental protection regulations. These solid wastes may come from multiple aspects, for example, waste generated in industrial production processes, urban domestic waste, agricultural waste, medical waste, etc.

[0069] Landfilled solid waste may be dangerous to a certain extent. For example, industrial waste landfilled in the soil may contain toxic substances such as heavy metals and organic pollutants. These substances can accumulate through the food chain and pose a threat to human health and the ecological environment. In this embodiment of the present invention, the risk level of landfilled solid waste can be classified to indicate its danger. The risk level of landfilled solid waste is used to indicate the possibility that the landfilled solid waste is hazardous waste. The above risk levels include low risk and high risk.

[0070] In the embodiment of the present invention, different methods can be used to determine the risk level of the buried solid waste for the first category of solid waste and the second category of solid waste. Specifically, for the second category of solid waste, the solid waste is tested for its characteristics (i.e., it is determined whether the various characteristics of the solid waste exceed the standard) to determine the risk level of the solid waste.

[0071] In one implementation, when the buried solid waste is the first type of solid waste, toxicity testing can be performed on the solid waste (i.e., determining whether the toxicity of the pollutants in the solid waste exceeds the standard) to determine the risk level of the contaminated soil, so as to determine whether the contaminated soil is hazardous waste. Figure 2 As shown, the method for determining the risk level of buried solid waste in a contaminated site (S101) may include S1011-S10112:

[0072] S1011. Conduct toxicity testing on buried solid wastes in contaminated sites to determine the toxicity exceeding standard rate of buried solid wastes in contaminated sites.

[0073] Alternatively, if Figure 3 As shown, the toxicity exceeding standard rate of buried solid waste in the contaminated site is determined by the following S1011A-S1011C.

[0074] S1011A. Determine the solid-to-soil conversion coefficient of pollutants in buried solid wastes in contaminated sites; the solid-to-soil conversion coefficient is the conversion coefficient between the content of pollutants in contaminated soil and the content of pollutants in solid wastes.

[0075] Among them, the content of pollutants in the above-mentioned contaminated soil is obtained by detecting the soil sample using a soil sample pretreatment method, and the content of pollutants in the solid waste is obtained by detecting the soil sample using a solid waste sample pretreatment method.

[0076] S1011B. Use the solid-soil conversion coefficient to convert the content of pollutants in multiple soil samples in the contaminated site to obtain the content of pollutants in the solid waste in the contaminated site.

[0077] It is understandable that based on the solid waste toxicity identification standard, the toxicity of the solid waste is determined according to the content of the pollutants in the solid waste. In the embodiment of the present invention, for the contaminated soil, before the contaminated soil is identified as solid waste, it is necessary to use a soil sample pretreatment method to detect the content of pollutants in the contaminated soil, and then convert the content of pollutants in the contaminated soil into the content of pollutants in the solid waste according to the solid-soil conversion coefficient, and then determine the toxicity of the contaminated soil according to the content of pollutants in the solid waste.

[0078] The method for determining the solid-soil conversion coefficient of pollutants in the buried solid waste in the above-mentioned contaminated site is as follows: first collect n (n is an integer greater than 1) contaminated soil samples in the contaminated site within the set range, and divide each contaminated soil sample into two equal-quality parts, respectively called the first sub-sample and the second sub-sample; for the first sub-sample of the i-th contaminated soil sample, determine the content of pollutants in the soil sample according to the solid waste sample pretreatment method Pi xFor the second subsample of the i-th contaminated soil sample, the content of pollutants in the soil sample Si is determined according to the soil sample pretreatment method x ; Based on the two sets of test data of the three samples (the content of pollutants obtained by the two test methods), the following calculation formula is used to determine the solid-soil conversion coefficient of the pollutants in the contaminated site. The calculation formula for the solid-soil conversion coefficient is:

[0079]

[0080] In the formula, μ x is the soil-solid conversion coefficient of pollutant X; Pi x is the content of pollutant X in the i-th soil sample detected by the solid waste sample pretreatment method; Si x is the content of pollutant X in the i-th soil sample detected according to the soil sample pretreatment method.

[0081] Optionally, the number n of the contaminated soil samples can be selected according to actual needs, and is not limited in the embodiment of the present invention. For example, n can be 3.

[0082] The solid soil conversion coefficient μ is determined by the above method. x Then, in S1011B, for the contaminated soil, the content of the pollutant in each of the multiple soil samples is determined by a soil sample pretreatment method (Si x ), and then the above formula is used to convert the pollutant content Pi in the solid waste in the contaminated site. x .

[0083] For the description of the specific process of the solid waste sample pretreatment method and the soil sample pretreatment method, reference can be made to the description of the prior art materials, and the embodiments of the present invention will not be described in detail.

[0084] In the existing methods for detecting the toxicity of contaminated soil, a soil sample pretreatment method is usually first used to determine the content of pollutants in the contaminated soil. When the contaminated soil is determined to be solid waste based on the content of pollutants (when the content of pollutants exceeds a certain threshold, the contaminated soil is solid waste), the contaminated soil is detected using a solid waste sample pretreatment method to determine the content of pollutants in the contaminated soil, and then the toxicity of the contaminated soil is determined based on the content of pollutants. In the case of a large amount of data, this method requires huge manpower and material resources. The embodiment of the present invention converts the content of pollutants in the contaminated soil into the content of pollutants in the solid waste, and then determines the toxicity of the contaminated soil based on the solid waste toxicity identification standard. This method does not need to use a solid waste sample pretreatment method to detect the contaminated soil, which can save manpower and material resources.

[0085] S1011C. Determine the toxicity exceeding standard rate of buried solid waste based on the content of pollutants in the solid waste within the contaminated site.

[0086] It can be understood that for each soil sample (soil sample identified as solid waste), when the content of pollutants in the soil sample exceeds a certain threshold, the soil sample is determined to be excessively toxic.

[0087] Specifically, according to the toxicity identification standard (such as the toxic substance content identification in GB5085.6), the toxicity exceeding standard rate of buried solid waste is the number of soil samples with toxicity exceeding the standard divided by the total number of soil samples.

[0088] S1012. When the toxicity exceeding rate of the contaminated soil is less than the second preset exceeding rate, the risk level of the buried solid waste is determined to be low risk; when the toxicity exceeding rate of the contaminated soil is greater than or equal to the second preset exceeding rate, the risk level of the buried solid waste is determined to be high risk.

[0089] Exemplarily, the second preset excess rate can be 22%. If the toxicity excess rate of the contaminated soil is less than 22%, the contaminated soil in the contaminated site is determined to be low-risk contaminated soil; if the toxicity excess rate of the contaminated soil is greater than or equal to 22%, the contaminated soil in the contaminated site is determined to be high-risk contaminated soil.

[0090] In one implementation, when the buried solid waste is the second type of solid waste, the method for determining the risk level of the buried solid waste in the contaminated site (S101) may include S1013-S1014:

[0091] S1013. Conduct characteristic testing on buried solid waste in contaminated sites.

[0092] In the embodiment of the present invention, samples (e.g., 3-5 samples) of buried solid waste in the contaminated site are taken and characteristic tests are performed. Optionally, the characteristic tests include but are not limited to at least one of the following: corrosiveness identification, acute toxicity screening, leaching toxicity identification, flammability identification, reactivity identification, and toxic substance content identification.

[0093] For example, GB5085.1 can be used for corrosiveness identification, GB5085.2 can be used for acute toxicity initial screening, GB5085.3 can be used for leaching toxicity identification, GB5085.4 can be used for flammability identification, GB5085.5 can be used for reactivity identification, and GB5085.6 can be used for toxic substance content identification.

[0094] S1014. When the characteristic test results do not exceed the standard, the risk level of the buried solid waste is determined to be low risk; when the characteristic test results exceed the standard, the risk level of the buried solid waste is determined to be high risk.

[0095] During the characteristic test of buried solid waste, for each characteristic test, the characteristic test result of buried solid waste includes exceeding the standard or not exceeding the standard. For example, when corrosiveness identification is performed, if the corrosiveness of buried solid waste exceeds the prescribed standard, the result of corrosiveness identification is exceeding the standard; otherwise, the result of corrosiveness identification is not exceeding the standard.

[0096] In the embodiment of the present invention, if the test results of each characteristic of each sample are within the standard, the risk level of the buried solid waste is determined to be low risk; otherwise (that is, the test result of at least one characteristic of at least one sample is exceeded), the risk level of the buried solid waste is determined to be high risk.

[0097] S102, performing characteristic tests on a plurality of samples of the buried solid waste to be tested, and determining the number of samples of the buried solid waste to be tested that exceed the standard.

[0098] It should be understood that the method for performing characteristic detection on multiple samples of buried solid waste to be detected is the same as the characteristic detection method in the above-mentioned S1013. Therefore, the process of performing characteristic detection on buried solid waste to be detected can refer to the relevant description of S1013 and will not be repeated here.

[0099] For each sample, the characteristic test results of the sample include exceeding the standard or not exceeding the standard. If all the characteristic test results of the sample are within the standard, then the characteristic test result of the sample is determined to be within the standard; if at least one of the characteristic test results of the sample exceeds the standard, then the characteristic test result of the sample is determined to be exceeding the standard.

[0100] Based on the above content, the number of samples of buried solid waste that exceed the standard to be tested is the sum of the number of samples whose characteristic test results exceed the standard among multiple samples.

[0101] In the embodiment of the present invention, whether the buried solid waste is hazardous waste is determined based on the risk level of the buried solid waste determined in S101 and the number of samples of the buried solid waste to be tested that exceed the standard determined in S102.

[0102] Specifically, when the risk level of buried solid waste is low risk, and the lower limit value of the number of samples exceeding the standard corresponding to the preset multiple number of samples of buried solid waste includes the lower limit value of the number of samples exceeding the standard corresponding to the above-mentioned number of samples of buried solid waste to be detected, or when the risk level of the above-mentioned buried solid waste is high risk, and the lower limit value of the number of samples exceeding the standard corresponding to the preset multiple number of samples of buried solid waste includes the lower limit value of the number of samples exceeding the standard corresponding to the above-mentioned number of samples of buried solid waste to be detected, according to the provisions of the hazardous waste identification standard, the lower limit value of the number of samples exceeding the standard (the first lower limit value of the number of samples exceeding the standard or the second lower limit value of the number of samples exceeding the standard) is determined. If the number of samples exceeding the standard of the buried solid waste to be detected is greater than or equal to the lower limit value of the number of samples exceeding the standard, the buried solid waste to be detected is determined to be hazardous waste; otherwise, the buried solid waste to be detected is determined to be non-hazardous waste.

[0103] It should be understood that the hazardous waste identification standard stipulates the lower limit of the number of samples exceeding the standard corresponding to the number of samples of buried solid waste, that is, the preset lower limit of the number of samples exceeding the standard corresponding to the number of samples of buried solid waste. The following Table 1 illustrates the preset lower limit of the number of samples exceeding the standard corresponding to the number of samples of buried solid waste.

[0104] Table 1

[0105] Number of samples The lower limit of the number of samples exceeding the standard 5 2 8 3 13 4 20 6 32 8 50 11 80 15 100 22

[0106] Exemplarily, the sample score of the buried solid waste to be tested is 13, and the number of samples exceeding the standard detected is 6. Combined with Table 1, the lower limit of the number of samples exceeding the standard corresponding to the sample score of 13 is 4. It can be seen that the number of samples exceeding the standard of the buried solid waste to be tested is greater than the lower limit of the number of samples exceeding the standard specified in Table 1. Therefore, the buried solid waste to be tested is determined to be hazardous waste.

[0107] In the case where the risk level of the buried solid waste is low risk, and the lower limit of the number of samples exceeding the standard corresponding to the preset multiple sample portions of the buried solid waste does not contain the lower limit of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be detected, it is determined whether the buried solid waste to be detected is hazardous waste through the following S103. In the case where the risk level of the buried solid waste is high risk, and the lower limit of the number of samples exceeding the standard corresponding to the preset multiple sample portions of the buried solid waste does not contain the lower limit of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be detected, it is determined whether the buried solid waste to be detected is hazardous waste through the following S104.

[0108] S103. When the risk level of the buried solid waste is low risk and the lower limit of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be tested does not exist in the lower limit of the number of samples exceeding the standard corresponding to the preset multiple lower limit of the number of samples of the buried solid waste, determine a first lower limit of the number of samples exceeding the standard; if the number of samples exceeding the standard of the buried solid waste to be tested is greater than or equal to the first lower limit of the number of samples exceeding the standard, determine the buried solid waste to be tested as hazardous waste; otherwise, determine the buried solid waste to be tested as non-hazardous waste (also called general solid waste).

[0109] The above-mentioned first lower limit value of the number of samples exceeding the standard is the lower limit value of the number of samples exceeding the standard corresponding to the number of samples that is smaller than the number of samples of the buried solid waste to be tested among the preset multiple sample numbers and has the smallest difference with the number of samples of the buried solid waste to be tested.

[0110] Exemplarily, in combination with the above Table 1, assuming that the number of samples of buried solid waste to be tested is 18, and there is no lower limit value of the number of samples exceeding the standard corresponding to the sample number 18 in Table 1, then the lower limit value of the number of samples exceeding the standard (i.e., 4) corresponding to the sample number less than 18 and the smallest difference with 18 in Table 1 (i.e., sample number 13) is taken as the first lower limit value of the number of samples exceeding the standard.

[0111] In the embodiment of the present invention, since non-hazardous solid waste (i.e., general solid waste) is commonly found in low-risk buried solid wastes, through S103, the lower limit value of the number of samples exceeding the standard, which is close to the number of samples exceeding the standard specified in the standard and less than the lower limit value of the number of samples exceeding the standard, is taken as the first lower limit value of the number of samples exceeding the standard, so as to smoothly determine whether the buried solid waste is hazardous waste.

[0112] S104. When the risk level of the buried solid waste is high risk and the lower limit of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be tested does not exist in the preset lower limit of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be tested, determine a second lower limit of the number of samples exceeding the standard; if the number of samples exceeding the standard of the buried solid waste to be tested is greater than or equal to the second lower limit of the number of samples exceeding the standard, determine that the buried solid waste to be tested is hazardous waste; otherwise, determine that the buried solid waste to be tested is non-hazardous waste.

[0113] The above-mentioned second lower limit value of the number of samples exceeding the standard is generated based on the preset lower limit value of the number of samples exceeding the standard corresponding to multiple sample portions of buried solid waste. The preset lower limit value of the number of samples exceeding the standard corresponding to multiple sample portions of buried solid waste is that the lower limit value of the number of samples exceeding the standard corresponding to multiple sample portions of buried solid waste specified in the above-mentioned hazardous waste identification standard (see Table 1).

[0114] Optionally, the lower limit of the number of samples exceeding the second standard is determined by any one of the following methods 1 to 6.

[0115] Method 1: The lower limit of the second excessive sample number is the product of the number of buried solid waste samples to be tested and the first preset excessive rate.

[0116] Exemplarily, the first preset exceeding standard rate may be 22%, and the value after rounding off the result of number of samples × 22% is used as the lower limit of the second exceeding standard number of samples.

[0117] Method 2: The lower limit of the second number of samples exceeding the standard is the product of the number of samples of buried solid waste to be tested and the average of the exceeding standard rates corresponding to adjacent numbers.

[0118] The excess rate is the lower limit of the number of samples exceeding the standard divided by the number of samples.

[0119] Exemplarily, in combination with the above Table 1, assuming that the number of samples of buried solid waste to be tested is 18, there is no lower limit of the number of samples exceeding the standard corresponding to sample number 17 in Table 1, and the sample numbers adjacent to 17 are 13 and 20, then the exceedance rate corresponding to sample number 13 (4 / 13) and the average of the exceedance rate corresponding to sample number 20 (6 / 20) multiplied by the number of samples of buried solid waste to be tested (i.e. 17×[(4 / 13)+(6 / 20)] / 2) are rounded off as the second lower limit of the number of samples exceeding the standard, and the determined second lower limit of the number of samples exceeding the standard is 5.

[0120] Method three: the second lower limit value of the number of samples exceeding the standard is the product of the number of samples of buried solid waste to be tested and the average exceeding rate of adjacent samples. The above-mentioned average exceeding rate of adjacent samples is the sum of the lower limit values ​​of the number of samples exceeding the standard corresponding to the adjacent samples divided by the sum of the adjacent samples.

[0121] Exemplarily, in combination with the above Table 1, assuming that the number of samples of buried solid waste to be tested is 17, and the number of samples adjacent to 17 are 13 and 20, then the product of the number of samples of buried solid waste to be tested 17 and the average exceeding rate of the adjacent numbers (17×[(4+6) / (13+20)]) is rounded off as the second lower limit of the number of samples exceeding the standard, and the determined second lower limit of the number of samples exceeding the standard is 5.

[0122] Method 4: The second lower limit value of the number of samples exceeding the standard is obtained by performing linear regression analysis on multiple preset sample numbers of buried solid waste and the lower limit value of the number of samples exceeding the standard.

[0123] Specifically, a linear regression analysis is performed on the lower limit of the number of samples exceeding the standard and the number of samples, and a linear relationship between the lower limit of the number of samples exceeding the standard and the number of samples is obtained by fitting. When performing linear regression analysis, the statistical indicator R2 (R 2 =0.982) is used to measure the degree of fit of the model to the observed values. 2 When it is close to 1, it means that the linear regression relationship can well explain the variability in the data and the fitting effect is good.

[0124] Exemplarily, the linear relationship between the lower limit of the number of samples exceeding the standard and the number of samples can be: Y=0.1924X+1.4676, wherein Y is the lower limit of the number of samples exceeding the standard, and X is the number of samples. If the number of samples of buried solid waste to be tested is known, the lower limit of the number of samples exceeding the standard corresponding to the number of samples can be determined according to the above linear relationship.

[0125] Method 5: round off the average of the lower limits of the number of samples exceeding the standard obtained by at least two of the above four methods and use it as the second lower limit of the number of samples exceeding the standard.

[0126] Method six: when the value of the sample number is large, split the sample number into multiple small sample numbers, and determine the lower limit of the number of samples exceeding the standard corresponding to each small sample number; then take the sum of the lower limit of the number of samples exceeding the standard corresponding to the multiple small sample numbers as the second lower limit of the number of samples exceeding the standard.

[0127] Exemplarily, assuming that the number of samples of buried solid waste to be tested is 132, 132 are divided into small sample numbers 32 and small sample numbers 100. Combined with Table 1, the sum of the lower limit of the number of samples exceeding the standard corresponding to the sample number 32, 8, and the lower limit of the number of samples exceeding the standard corresponding to the sample number 100, 22, is taken as the second lower limit value of the number of samples exceeding the standard, that is, the lower limit value of the number of samples exceeding the standard corresponding to the sample number 132 is 30.

[0128] Exemplarily, in combination with Table 1, Table 2 illustrates some sample numbers obtained by using the above-mentioned methods 1 to 6 and the lower limit of the second number of samples exceeding the standard.

[0129] Table 2

[0130] Number of samples The lower limit of the number of samples exceeding the standard Number of samples The lower limit of the number of samples exceeding the standard 5 2 64 13 8 3 72 14 13 4 80 15 17 5 83 16 20 6 86 17 28 7 89 18 32 8 92 19 39 9 95 20 45 10 98 21 50 11 100 22 56 12 132 30

[0131] Exemplarily, the sample score of the buried solid waste to be tested is 17, and the number of samples exceeding the standard detected is 7. Combined with Table 2, the lower limit of the number of samples exceeding the standard corresponding to the sample score of 17 is 5. It can be seen that the number of samples exceeding the standard of the buried solid waste to be tested is greater than the lower limit of the number of samples exceeding the standard in Table 2. Therefore, the buried solid waste to be tested is determined to be hazardous waste.

[0132] In the embodiment of the present invention, for high-risk buried solid waste, the pollution situation is relatively complicated. The use of the above-mentioned single judgment method (the method of determining the lower limit of the number of samples exceeding the standard in S103) may make the result unreasonable (for example, solid waste that does not meet the hazardous waste judgment standard is identified as hazardous waste), resulting in an increase in processing costs, which is not conducive to the management of hazardous waste. Therefore, for high-risk buried solid waste, any one of the multiple methods in S104 is used to determine the lower limit of the number of samples exceeding the standard to improve its rationality and accuracy.

[0133] Based on the above content, the method for determining the hazardous characteristics of buried solid waste provided by the embodiment of the present invention divides the buried solid waste in the contaminated site into risk levels, and for buried solid waste of different risk levels, when there is no lower limit value of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be detected in the existing hazardous waste identification standards, different methods can be used to determine the lower limit value of the number of samples exceeding the standard, and determine whether the buried solid waste is hazardous waste based on the lower limit value of the number of samples exceeding the standard. Therefore, this method has a wider applicability, can flexibly and reasonably determine the hazardous characteristics of buried solid waste, and is helpful for the management of hazardous waste.

[0134] Furthermore, compared with the existing method of determining the hazardous characteristics of buried solid waste based on experience, determining the hazardous characteristics of buried solid waste based on the lower limit value of the number of samples exceeding the standard determined in the embodiments of the present invention can improve the accuracy of determining the hazardous characteristics of buried solid waste to a certain extent.

[0135] Accordingly, an embodiment of the present invention provides a device for determining the hazardous characteristics of buried solid waste, such as Figure 4 As shown, the device includes a risk classification module 501, a detection module 502 and a determination module 503.

[0136] The risk classification module 501 is used to classify the risk levels of the buried solid waste in the contaminated site, and the risk levels include low risk and high risk. For example, the risk classification module 501 is used to implement S101 in the above-mentioned method for determining the hazardous characteristics of the buried solid waste, and S101 specifically includes S1011-S1012 or S1013-S1014, wherein S1011 includes S1011A-S1011C.

[0137] The detection module 502 is used to perform characteristic detection on multiple samples of the buried solid waste to be detected, and determine the number of samples of the buried solid waste to be detected that exceed the standard. For example, the detection module 502 is used to implement S102 in the above-mentioned method for determining the hazardous characteristics of the buried solid waste.

[0138] The determination module 503 is used to determine whether the buried solid waste to be detected is hazardous waste based on the risk level and the exceeding result. For example, the determination module 503 is used to implement S103-S104 in the above-mentioned method for determining the hazardous characteristics of buried solid waste.

[0139] The various modules of the above-mentioned device for determining the hazardous characteristics of buried solid waste can also be used to execute other steps in the above-mentioned method embodiment. All relevant contents involved in the above-mentioned method embodiment can be referred to the functional description of the corresponding functional module and will not be repeated here.

[0140] The embodiment of the present invention further provides an electronic device, comprising: a processor and a memory coupled to the processor; the memory is used to store computer instructions, and when the electronic device is running, the processor executes the computer instructions stored in the memory, so that the electronic device executes the method in the above embodiment. The processor can implement the functions of the risk classification module 501, the detection module 502 and the determination module 503.

[0141] An embodiment of the present invention further provides a computer-readable storage medium, which includes a computer program. When the computer program runs on a computer, the method in the above embodiment is executed.

[0142] An embodiment of the present invention further provides a computer program product, which includes computer program instructions. When the computer program instructions are run on a computer, the method in the above embodiment is executed.

[0143] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0144] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for determining hazardous characteristics of buried solid waste in contaminated sites, characterized in that: include: Determine the risk level of the buried solid waste in the contaminated site; wherein the risk level of the buried solid waste is used to indicate the possibility that the buried solid waste is hazardous waste, and the risk level includes low risk and high risk; Performing characteristic tests on a plurality of samples of the buried solid waste to be tested, and determining the number of samples of the buried solid waste to be tested that exceed the standard; In the case that the risk level of the buried solid waste is low risk, and the lower limit value of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be detected does not exist in the lower limit value of the number of samples exceeding the standard corresponding to the preset multiple number of samples of the buried solid waste, determine a first lower limit value of the number of samples exceeding the standard, the first lower limit value of the number of samples exceeding the standard is the lower limit value of the number of samples exceeding the standard corresponding to the number of samples among the multiple number of samples that is smaller than the number of samples of the buried solid waste to be detected and has the smallest difference with the number of samples of the buried solid waste to be detected; if the number of samples exceeding the standard of the buried solid waste to be detected is greater than or equal to the first lower limit value of the number of samples exceeding the standard, determine that the buried solid waste to be detected is hazardous waste; otherwise, determine that the buried solid waste to be detected is non-hazardous waste; When the risk level of the buried solid waste is high risk, and the lower limit value of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be tested does not exist in the lower limit values ​​of the number of samples exceeding the standard corresponding to the preset multiple number of samples of the buried solid waste, a second lower limit value of the number of samples exceeding the standard is determined, and the second lower limit value of the number of samples exceeding the standard is generated based on the preset lower limit values ​​of the number of samples exceeding the standard corresponding to the multiple number of samples of the buried solid waste; if the number of samples exceeding the standard of the buried solid waste to be tested is greater than or equal to the second lower limit value of the number of samples exceeding the standard, the buried solid waste to be tested is determined to be hazardous waste; otherwise, the buried solid waste to be tested is determined to be non-hazardous waste.

2. The method according to claim 1, characterized in that: The second lower limit of the number of samples exceeding the standard is determined by at least one of the following methods: Method 1: the lower limit of the number of samples exceeding the standard is the product of the number of samples of the buried solid waste to be detected and the first preset exceeding standard rate; Method 2: the lower limit of the number of samples exceeding the standard is the product of the number of samples of the buried solid waste to be tested and the average of the exceeding rate corresponding to the adjacent numbers; Method three, the second lower limit of the number of samples exceeding the standard is the product of the number of samples of the buried solid waste to be tested and the average exceeding rate of adjacent samples, and the average exceeding rate of adjacent samples is the sum of the lower limits of the number of samples exceeding the standard corresponding to the adjacent samples divided by the sum of the adjacent samples; Method 4: The second lower limit value of the number of samples exceeding the standard is obtained by performing linear regression analysis on multiple preset sample numbers of buried solid waste and the lower limit value of the number of samples exceeding the standard.

3. The method according to claim 1, characterized in that The buried solid waste includes first-category solid waste and second-category solid waste; wherein, the first-category solid waste is contaminated soil to be identified as solid waste, and the second-category solid waste is solid waste that is artificially landfilled.

4. The method according to claim 3, characterized in that: When the buried solid waste is the first category of solid waste, the risk level of the buried solid waste in the contaminated site shall include: Conducting toxicity testing on the buried solid waste in the contaminated site to determine the toxicity exceeding standard rate of the buried solid waste in the contaminated site; When the toxicity exceeding standard rate is less than the second preset exceeding standard rate, determining the risk level of the buried solid waste to be low risk; When the toxicity exceeding standard rate is greater than or equal to the second preset exceeding standard rate, the risk level of the buried solid waste is determined to be high risk.

5. The method according to claim 3, characterized in that: When the buried solid waste is the second type of solid waste, the risk level of the buried solid waste in the contaminated site shall include: Conducting characteristic testing on the buried solid waste in the contaminated site; In the case where the characteristic test results do not exceed the standard, the risk level of the buried solid waste is determined to be low risk; When the characteristic test results exceed the standard, the risk level of the buried solid waste is determined to be high risk.

6. The method according to claim 4, characterized in that The toxicity test of the buried solid waste in the contaminated site to determine the toxicity exceeding standard rate of the buried solid waste in the contaminated site includes: Determine the solid-soil conversion coefficient of pollutants in the buried solid waste in the contaminated site; the solid-soil conversion coefficient is the conversion coefficient between the content of pollutants in the contaminated soil and the content of pollutants in the solid waste; wherein the content of pollutants in the contaminated soil is the content of pollutants in the soil sample obtained by testing the soil sample using a soil sample pretreatment method, and the content of pollutants in the solid waste is the content of pollutants in the soil sample obtained by testing the soil sample using a solid waste sample pretreatment method; The solid-soil conversion coefficient is used to convert the content of pollutants in multiple soil samples in the contaminated site to obtain the content of pollutants in the solid waste in the contaminated site; The toxicity exceeding standard rate of the buried solid waste is determined according to the content of pollutants in the solid waste in the contaminated site.

7. A device for determining hazardous characteristics of buried solid waste in contaminated sites, characterized in that: It includes risk classification module, detection module and judgment module; The risk classification module is used to determine the risk level of the buried solid waste in the contaminated site; wherein the risk level of the buried solid waste is used to indicate the possibility that the buried solid waste is hazardous waste, and the risk level includes low risk and high risk; The detection module is used to perform characteristic detection on multiple samples of buried solid waste to be detected, and determine the number of samples of the buried solid waste to be detected that exceed the standard; The determination module is used to determine a first lower limit value of the number of samples exceeding the standard, when the risk level of the buried solid waste is low risk and the lower limit value of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be detected does not exist in the preset lower limit values ​​of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be detected; if the number of samples exceeding the standard of the buried solid waste to be detected is greater than or equal to the first lower limit value of the number of samples exceeding the standard, the buried solid waste to be detected is determined to be hazardous waste; otherwise, the buried solid waste to be detected is determined to be non-hazardous waste; wherein the first lower limit value of the number of samples exceeding the standard is the lower limit value of the number of samples exceeding the standard corresponding to the number of samples among the multiple sample numbers that is smaller than the number of samples of the buried solid waste to be detected and has the smallest difference with the number of samples of the buried solid waste to be detected; The determination module is also used to determine a second lower limit value of the number of samples exceeding the standard when the risk level of the buried solid waste is high risk and the lower limit value of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be detected does not exist in the preset lower limit values ​​of the number of samples exceeding the standard corresponding to the number of samples of the buried solid waste to be detected; if the number of samples exceeding the standard of the buried solid waste to be detected is greater than or equal to the second lower limit value of the number of samples exceeding the standard, the buried solid waste to be detected is determined to be hazardous waste; otherwise, the buried solid waste to be detected is determined to be non-hazardous waste; wherein the second lower limit value of the number of samples exceeding the standard is generated based on the preset lower limit values ​​of the number of samples exceeding the standard corresponding to the multiple sample numbers of the buried solid waste.

8. An electronic device, characterized in that: It comprises a processor and a memory coupled to the processor; the memory is used to store computer instructions, and when the electronic device is running, the processor executes the computer instructions stored in the memory, so that the electronic device executes the method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: The method comprises computer program instructions, which, when executed by a computer, cause the computer to perform the method according to any one of claims 1 to 6.

10. A computer program product, characterized in that The method comprises computer program instructions, and when the computer program instructions are executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 6.

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