A method and system for grading and classifying hazardous waste management information

Abstract

The present invention discloses a method and system for pushing hazardous waste management information in a hierarchical and classified manner. The method comprises the following steps: S1 acquiring information, S2 grading hazardous wastes of waste-producing enterprises, S3 classifying waste-producing enterprises, S4 pushing environmental management requirements, and S5 centralized collection and feasibility pushing; the system comprises an information acquisition module, a grading and classification module, an information pushing module, a data storage module, and a data statistical analysis module connected in sequence; the present invention can realize the automation of hazardous waste grading and classification, realize directional pushing, and improve management efficiency and accuracy; it is conducive to optimizing the management of social non-point source hazardous wastes and improving the management specialization and comprehensiveness.

Description

Technical Field

[0001] The present invention relates to the technical field of hazardous waste information transmission, and in particular to a method and system for grading and classifying hazardous waste management information. Background Art

[0002] Hazardous waste refers to solid waste that is included in the national hazardous waste list or is identified as having the hazardous characteristics of hazardous waste according to the national hazardous waste identification standards and identification methods. In recent years, with the rapid economic development, the amount of hazardous waste generated has also increased year by year, and the environmental risks and threats brought by a large amount of hazardous waste are extremely high. At present, with the improvement of hazardous waste management capabilities in various parts of my country, various provinces and cities have basically established provincial hazardous waste management information systems. Taking the Jiangsu Province Hazardous Waste Life Cycle Monitoring System as an example, the system mainly includes notification reminders, basic information, declaration registration, transfer management, statistical analysis, supply and demand platform and other modules. The patent with application number 202010048102.6 discloses a hazardous waste full life cycle intelligent management terminal system. Through intelligent floor scales, signal transmitters, Android motherboards, hazardous waste standardized management terminal software, and cloud databases, information supervision of all links in the entire life cycle of hazardous waste from generation, storage, transportation to disposal is realized.

[0003] There are many types of hazardous wastes with complex nature. Due to the different hazardous characteristics and quantities of hazardous wastes, their environmental risks are different. Therefore, it is unscientific to treat different hazardous wastes in the same degree of management. Instead, we should adopt the principle of differentiated treatment and graded management according to the hazardous characteristics and degree of harm of different hazardous wastes, that is, for hazardous wastes with particularly serious hazards, strict control and key management should be implemented, while the management scale and requirements of relatively less harmful wastes can be relaxed. This can not only save the investment or cost of hazardous waste management funds, but also minimize the pollution caused by hazardous wastes to the environment and the harm to humans.

[0004] However, the existing hazardous waste information management system only has basic data statistical analysis functions, and has not yet achieved automatic data classification, so that the corresponding classification management work is difficult to include in statistics, and it is impossible to guide the refined management of hazardous waste classification. Secondly, for waste-producing enterprises, the same degree of management for different hazardous wastes is adopted, which is time-consuming and labor-intensive. In addition, the existing system lacks compliant hazardous waste disposal units and hazardous waste centralized collection units. The recommendation leads to the unsmooth transfer of hazardous wastes by waste-producing enterprises and high disposal costs due to information barriers.

[0005] In order to solve the problem that the existing hazardous waste information management system is unable to perform hierarchical classification and statistics and push relevant management requirements, the present invention provides a hazardous waste management information grading and classification push system and method, which can solve the problem that hazardous waste management data in traditional information systems cannot be graded and classified, and can carry out targeted push of the feasibility of centralized collection and the centralized collection unit according to the grading and classification of waste-producing enterprises. The solution is simple and easy to implement and is suitable for promotion. Summary of the invention

[0006] Therefore, the present invention provides a method and system for grading and classifying hazardous waste management information.

[0007] The technical solution of the present invention is: a method for grading and classifying hazardous waste management information, comprising the following steps:

[0008] S1. Get information:

[0009] Obtain basic information on hazardous wastes from multiple waste-generating enterprises, including waste-generating industry categories, hazardous waste codes, hazardous characteristics of hazardous wastes, and annual generation of wastes from waste-generating enterprises;

[0010] S2. Classify hazardous wastes from waste-producing enterprises:

[0011] According to the hazardous waste code and hazardous characteristics of hazardous waste, hazardous wastes from waste-producing enterprises are divided into three environmental risk levels;

[0012] S3. Classify waste-producing enterprises:

[0013] According to the waste-producing industry category, waste-producing enterprises are divided into Class I industry units and Class II industry units; using the annual production volume in step S1 and the environmental risk level in step S2, Class II industry units are classified into general source units and key source units;

[0014] S4. Environmental management requirements push:

[0015] To push environmental management requirements for waste-producing enterprises with the same environmental risk level and category as the hazardous wastes they generate to waste-producing enterprises that need to be managed, including: source classification, internal collection, storage, transfer, centralized collection, entrusted utilization and disposal, and regional platform monitoring;

[0016] S5. Centralized collection of feasibility push:

[0017] First, it is stipulated that the feasibility of centralized collection of hazardous wastes corresponding to the first category of industry units and general source units is yes;

[0018] Then determine the feasibility of centralized collection of hazardous wastes corresponding to key source units. The determination method is:

[0019] For key source units, when the corresponding annual production volume is ≤10t and the environmental risk level of hazardous waste is II or III, the feasibility of centralized collection of hazardous wastes of the waste-producing enterprise is yes; when the corresponding annual production volume is >10t and the environmental risk level of hazardous waste is II or III, the feasibility of centralized collection of hazardous wastes of the waste-producing enterprise is no;

[0020] Class II or III hazardous wastes include waste mineral oil and waste containing mineral oil (HW08), oil / water, hydrocarbon / water mixtures or emulsions (HW09), waste mercury-containing fluorescent tubes and other waste mercury-containing electric light sources generated during production, sales and use (900-023-29), waste lead-acid batteries (900-052-31), and waste packaging, containers, and filter adsorption media containing or contaminated with toxic hazardous wastes;

[0021] When the environmental risk level of hazardous waste is Level I, the feasibility of centralized collection of hazardous waste from the waste-producing enterprise is no;

[0022] According to the annual generation of hazardous wastes and the environmental risk level of the waste-producing enterprises that need to be managed; the feasibility of centralized collection of hazardous wastes corresponding to the waste-producing enterprises that need to be managed is used to generate feasibility results, and the feasibility results are pushed to the waste-producing enterprises that need to be managed and / or centralized collection units. Among them, the feasibility results of centralized collection with a feasibility of yes are pushed to small and micro centralized collection units, and the feasibility results of centralized collection with a feasibility of no are pushed to collection and disposal units with corresponding hazardous waste comprehensive management licenses.

[0023] Note: Grading and classifying hazardous waste management information through the above method can improve management efficiency and accuracy; through push, enterprises and relevant departments can quickly obtain and process hazardous waste-related information, incorporate it into statistical analysis, and guide the refined management of hazardous waste grading and classification.

[0024] Furthermore, in step S1, the method of obtaining basic information of hazardous wastes of multiple waste-producing enterprises is: accessing the information database of the industrial and commercial or environmental departments or obtaining it through the Internet.

[0025] Note: The above method can be used to obtain a relatively comprehensive picture of the basic situation of hazardous wastes generated by waste-producing enterprises.

[0026] Further, in step S2, the three environmental risk levels of the hazardous waste include: level I hazardous waste, level II hazardous waste and level III hazardous waste;

[0027] Class I hazardous wastes include: hazardous wastes that are listed in the standard list, can be used or disposed of in an environmentally sound manner and have been declared abandoned by the owner, or hazardous wastes that are reactive and have at least one of the following properties: flammability, corrosiveness, and toxicity;

[0028] Class II hazardous wastes include: hazardous wastes listed in the standard catalogue and only flammable, or hazardous wastes that are flammable and also have at least one of the following properties: corrosiveness and toxicity;

[0029] Class III hazardous wastes include: hazardous wastes that are only corrosive and / or toxic.

[0030] Note: The above standard list is the "Catalogue of Hazardous Chemicals". The above classification method can effectively classify hazardous wastes, which is more suitable for actual application processes than existing standards.

[0031] Furthermore, in step S3, the method for distinguishing between general source units and key source units is:

[0032] When the environmental risk level of hazardous waste is level I, if the maximum annual generation of hazardous waste is 0-0.3t, it is a general source unit; otherwise, it is a key source unit;

[0033] When the environmental risk level of hazardous waste is Level II, if the maximum annual generation of hazardous waste is 0-5t, it is a general source unit; otherwise, it is a key source unit;

[0034] When the environmental risk level of hazardous waste is Level III, if the maximum annual generation of hazardous waste is 0 to 10 tons, it is a general source unit; otherwise, it is a key source unit.

[0035] Note: By distinguishing between general source units and key source units through the above method, hazardous wastes can be differentiated and treated in a targeted manner in practical applications, thereby improving management and response efficiency.

[0036] Furthermore, in step S3, the method of classifying waste-producing enterprises according to the waste-producing industry categories is as follows: in the waste-producing industries in the hazardous waste list, those with industry codes of P83, M73, M74, M75, Q84, O811, F5151, F5152, F5153, F5251, F5252, F5253, F5265, F5296, G5435, and G594 are classified as Class I industry units; and the rest are classified as Class II industry units.

[0037] Note: By classifying 16 types of waste-producing units into special industry units, key and difficult industries have been clarified, which is conducive to optimizing the management of social non-point source hazardous wastes and improving the professionalism and comprehensiveness of management.

[0038] Furthermore, in step S4, the environmental management requirements of source classification, internal collection, storage, transfer, centralized collection, entrusted utilization and disposal, and regional platform monitoring of the waste-producing enterprises are obtained through existing standards.

[0039] Note: The above existing standards are the requirements in the "Work Plan for the Construction of a Centralized Collection System for Hazardous Waste".

[0040] A hazardous waste management information grading and classification push system includes the following modules connected in sequence: an information collection module, a grading and classification module, an information push module, a data storage module, and a data statistical analysis module; wherein the grading and classification module includes an environmental risk grading module and a waste-producing enterprise classification module; the information push module includes an environmental management requirement push module and a centralized collection feasibility push module;

[0041] The information collection module is used to obtain basic information about hazardous wastes generated by waste-producing enterprises, including waste-producing industry categories, hazardous waste codes, hazardous characteristics of hazardous wastes, and annual production volume;

[0042] The environmental risk classification module is used to classify hazardous waste into three environmental risk levels using the hazardous waste codes and hazardous characteristics of hazardous waste acquired by the information collection module;

[0043] The waste-generating enterprise classification module is used to classify waste-generating enterprises into first-class industry units and second-class industry units. The second-class industry units include key source units and general source units.

[0044] The environmental management requirement push module is used to push environmental management requirements of waste-producing enterprises with the same environmental risk level and the same category as the waste-producing enterprises that generate hazardous waste to the waste-producing enterprises that need to be managed. The environmental management requirements include: source classification, internal collection, storage, transfer, centralized collection, entrusted utilization and disposal, and regional platform monitoring;

[0045] The centralized collection feasibility push module is used to determine the feasibility of centralized collection of hazardous wastes based on the hazardous waste codes, hazardous characteristics and annual production volume of hazardous wastes; and to push centralized hazardous waste collection units or hazardous waste utilization and disposal business units to waste-producing enterprises with a feasibility of yes;

[0046] The data storage module is used to store the acquired information and push records;

[0047] The data statistical analysis module is used to conduct statistical analysis on the classification data of multiple waste-producing enterprises and the graded data of hazardous wastes generated by waste-producing enterprises.

[0048] Note: The establishment of the above system can realize the automation of hazardous waste classification and improve management efficiency and accuracy.

[0049] Furthermore, the data storage module includes a storage point composed of a plurality of three-dimensional coordinate axes, wherein the coordinate axes of the storage point are H X , H Y , HZ ,in X is the environmental risk level of hazardous waste, Y The industry category of the waste-generating enterprise. Z The feasibility of centralized collection of hazardous waste from waste-generating enterprises, and Z =1 means that the feasibility of centralized collection of hazardous wastes from waste-producing enterprises is yes. Z When =-1, it means that it is not feasible to collect hazardous wastes from waste-producing enterprises in a centralized manner.

[0050] Note: The above storage method facilitates the storage and recording of data, and is also convenient for operators to review, making the data more intuitive.

[0051] The beneficial effects of the present invention are as follows: the present invention can make the information search, utilization and analysis of hazardous waste more intelligent and convenient by performing hierarchical and classified data management and storage of hazardous waste information from social surface sources, and by utilizing the hierarchical and classified management method, it can provide targeted push of environmental management requirements and feasibility results of centralized collection of hazardous waste to waste-producing enterprises and management units, thereby providing targeted decision-making support and strategic guidance for hazardous waste management. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a flowchart of the push system of Example 1 of the present invention. DETAILED DESCRIPTION

[0053] The present invention is further described in detail below in conjunction with specific implementation methods to better reflect the advantages of the present invention.

[0054] Embodiment 1: A hazardous waste management information grading and classification push system, implemented in Python language; comprising the following modules connected in sequence: an information collection module, a grading and classification module, an information push module, a data storage module and a data statistical analysis module; wherein the grading and classification module comprises an environmental risk grading module and a waste-generating enterprise classification module; the information push module comprises an environmental management requirement push module and a centralized collection feasibility push module;

[0055] The information collection module is used to obtain basic information about hazardous wastes generated by waste-producing enterprises, including waste-producing industry categories, hazardous waste codes, hazardous characteristics of hazardous wastes, and annual production volume;

[0056] The environmental risk classification module is used to classify hazardous waste into three environmental risk levels using the hazardous waste codes and hazardous characteristics of hazardous waste acquired by the information collection module;

[0057] The waste-generating enterprise classification module is used to classify waste-generating enterprises into first-class industry units and second-class industry units. The second-class industry units include key source units and general source units.

[0058] The environmental management requirement push module is used to push environmental management requirements of waste-producing enterprises with the same environmental risk level and the same category as the waste-producing enterprises that generate hazardous waste to the waste-producing enterprises that need to be managed. The environmental management requirements include: source classification, internal collection, storage, transfer, centralized collection, entrusted utilization and disposal, and regional platform monitoring;

[0059] The centralized collection feasibility push module is used to determine the feasibility of centralized collection of hazardous wastes based on the hazardous waste codes, hazardous characteristics and annual production volume of hazardous wastes; and to push centralized hazardous waste collection units or hazardous waste utilization and disposal business units to waste-producing enterprises with a feasibility of yes;

[0060] The data storage module is used to store the acquired information and push records;

[0061] The data storage module includes a storage point composed of a plurality of three-dimensional coordinate axes. The coordinate axes of the storage point are H X , H Y , H Z ,in X is the environmental risk level of hazardous waste, Y The industry category of the waste-generating enterprise. Z The feasibility of centralized collection of hazardous waste from waste-generating enterprises, and Z =1 means that the feasibility of centralized collection of hazardous wastes from waste-producing enterprises is yes. Z = -1 means that it is not feasible to collect hazardous wastes from waste-producing enterprises in a centralized manner;

[0062] The data statistical analysis module is used to conduct statistical analysis on the classification data of multiple waste-producing enterprises and the graded data of hazardous wastes generated by waste-producing enterprises.

[0063] Example 2: This example describes a method for pushing hazardous waste management information by classification and classification using the push system of Example 1, comprising the following steps:

[0064] S1. Get information:

[0065] Obtaining basic information on hazardous wastes from multiple waste-generating enterprises, including waste-generating industry categories, hazardous waste codes, hazardous characteristics of hazardous wastes, and annual generation of wastes from waste-generating enterprises; the method for obtaining basic information on hazardous wastes from multiple waste-generating enterprises is: accessing the information database of the industrial and commercial or environmental departments or obtaining it through the Internet;

[0066] S2. Classify hazardous wastes from waste-producing enterprises:

[0067] According to the hazardous waste code and hazardous characteristics of hazardous waste, hazardous wastes from waste-producing enterprises are divided into three environmental risk levels; the three environmental risk levels of hazardous wastes include: Class I hazardous wastes, Class II hazardous wastes and Class III hazardous wastes; Class I hazardous wastes include: hazardous wastes that are included in the standard list, can be used or disposed of in an environmentally sound manner and are declared abandoned by the owner, or hazardous wastes that are reactive and have at least one of flammable, corrosive and toxic properties; Class II hazardous wastes include: hazardous wastes that are included in the standard list and are only flammable, or hazardous wastes that are flammable and have at least one of corrosive and toxic properties; Class III hazardous wastes include: hazardous wastes that are only corrosive and / or toxic.

[0068] S3. Classify waste-producing enterprises:

[0069] According to the waste-producing industry category, waste-producing enterprises are divided into Class I industry units and Class II industry units; using the annual production volume in step S1 and the environmental risk level in step S2, Class II industry units are classified into general source units and key source units; the method for classifying waste-producing enterprises according to the waste-producing industry category is as follows: in the waste-producing industries in the hazardous waste list, the industry codes of P83, M73, M74, M75, Q84, O811, F5151, F5152, F5153, F5251, F5252, F5253, F5265, F5296, G5435, G594 The remaining units are classified as Class I industry units; the general source units and key source units are distinguished as follows: when the environmental risk level of hazardous waste is Class I, if the maximum annual generation of hazardous waste is 0-0.3t, it is a general source unit; otherwise, it is a key source unit; when the environmental risk level of hazardous waste is Class II, if the maximum annual generation of hazardous waste is 0-5t, it is a general source unit; otherwise, it is a key source unit; when the environmental risk level of hazardous waste is Class III, if the maximum annual generation of hazardous waste is 0-10t, it is a general source unit; otherwise, it is a key source unit;

[0070] S4. Environmental management requirements push:

[0071] The environmental management requirements of waste-producing enterprises with the same environmental risk level and the same category as the hazardous wastes generated by the waste-producing enterprises to be managed are pushed to the waste-producing enterprises that need to be managed. The environmental management requirements include: source classification, internal collection, storage, transfer, centralized collection, entrusted utilization and disposal, and regional platform monitoring; the environmental management requirements of source classification, internal collection, storage, transfer, centralized collection, entrusted utilization and disposal, and regional platform monitoring of the waste-producing enterprises are obtained through existing standards;

[0072] S5. Centralized collection of feasibility push:

[0073] First, it is stipulated that the feasibility of centralized collection of hazardous wastes corresponding to the first category of industry units and general source units is yes;

[0074] Then determine the feasibility of centralized collection of hazardous wastes corresponding to key source units. The determination method is:

[0075] For key source units, when the corresponding annual production volume is ≤10t and the environmental risk level of hazardous waste is II or III, the feasibility of centralized collection of hazardous wastes of the waste-producing enterprise is yes; when the corresponding annual production volume is >10t and the environmental risk level of hazardous waste is II or III, the feasibility of centralized collection of hazardous wastes of the waste-producing enterprise is no;

[0076] When the environmental risk level of hazardous waste is Level I, the feasibility of centralized collection of hazardous waste from the waste-producing enterprise is no;

[0077] According to the annual generation of hazardous wastes and the environmental risk level of the waste-producing enterprises that need to be managed, the feasibility of centralized collection of hazardous wastes corresponding to the waste-producing enterprises that need to be managed is used to generate feasibility results, and the feasibility results are pushed to the waste-producing enterprises that need to be managed and / or centralized collection units.

Claims

1. A method for grading and classifying hazardous waste management information, characterized in that: The following steps are involved: S1. Get information: Obtain basic information on hazardous wastes from multiple waste-generating enterprises, including waste-generating industry categories, hazardous waste codes, hazardous characteristics of hazardous wastes, and annual generation of wastes from waste-generating enterprises; S2. Classify hazardous wastes from waste-producing enterprises: According to the hazardous waste code and hazardous characteristics of hazardous waste, hazardous wastes from waste-producing enterprises are divided into three environmental risk levels; S3. Classify waste-producing enterprises: According to the waste-producing industry category, waste-producing enterprises are divided into Category I industry units and Category II industry units; Using the annual production volume in step S1 and the environmental risk level in step S2, the second-category industry units are classified into general source units and key source units; S4. Environmental management requirements push: To push environmental management requirements for waste-producing enterprises with the same environmental risk level and category as the hazardous wastes they generate to waste-producing enterprises that need to be managed, including: source classification, internal collection, storage, transfer, centralized collection, entrusted utilization and disposal, and regional platform monitoring; S5. Centralized collection of feasibility push: First, it is stipulated that the feasibility of centralized collection of hazardous wastes corresponding to the first category of industry units and general source units is yes; Then determine the feasibility of centralized collection of hazardous wastes corresponding to key source units. The determination method is: For key source units, when the corresponding annual production volume is ≤10t and the environmental risk level of hazardous waste is II or III, the feasibility of centralized collection of hazardous wastes of the waste-producing enterprise is yes; when the corresponding annual production volume is >10t and the environmental risk level of hazardous waste is II or III, the feasibility of centralized collection of hazardous wastes of the waste-producing enterprise is no; When the environmental risk level of hazardous waste is Level I, the feasibility of centralized collection of hazardous waste from the waste-producing enterprise is no; According to the annual generation of hazardous wastes and the environmental risk level of the waste-producing enterprises to be managed; the feasibility of centralized collection of hazardous wastes corresponding to the waste-producing enterprises to be managed is generated into a feasibility result, and the feasibility result is pushed to the waste-producing enterprises to be managed and / or centralized collection units; A system for pushing hazardous waste management information by classification and grading, used to implement a method for pushing hazardous waste management information by classification and grading, comprises the following modules connected in sequence: Information collection module, grading and classification module, information push module, data storage module and data statistical analysis module; wherein the grading and classification module includes an environmental risk grading module and a waste-producing enterprise classification module; the information push module includes an environmental management requirement push module and a centralized collection feasibility push module; The information collection module is used to obtain basic information about hazardous wastes generated by waste-producing enterprises, including waste-producing industry categories, hazardous waste codes, hazardous characteristics of hazardous wastes, and annual production volume; The environmental risk classification module is used to classify hazardous waste into three environmental risk levels using the hazardous waste codes and hazardous characteristics of hazardous waste acquired by the information collection module; The waste-generating enterprise classification module is used to classify waste-generating enterprises into first-class industry units and second-class industry units. The second-class industry units include key source units and general source units. The environmental management requirement push module is used to push environmental management requirements of waste-producing enterprises with the same environmental risk level and the same category as the waste-producing enterprises that generate hazardous waste to the waste-producing enterprises that need to be managed. The environmental management requirements include: source classification, internal collection, storage, transfer, centralized collection, entrusted utilization and disposal, and regional platform monitoring; The centralized collection feasibility push module is used to determine the feasibility of centralized collection of hazardous wastes based on the hazardous waste codes, hazardous characteristics and annual production volume of hazardous wastes; and to push centralized hazardous waste collection units or hazardous waste utilization and disposal business units to waste-producing enterprises with a feasibility of yes; The data storage module is used to store the acquired information and push records; The data statistical analysis module is used to conduct statistical analysis on the classification data of multiple waste-producing enterprises and the classification data of hazardous wastes generated by waste-producing enterprises; The data storage module includes a storage point composed of a plurality of three-dimensional coordinate axes. The coordinate axes of the storage point are H X , H Y , H Z ,in X is the environmental risk level of hazardous waste, Y The industry category of the waste-generating enterprise. Z The feasibility of centralized collection of hazardous waste from waste-generating enterprises, and Z =1 means that the feasibility of centralized collection of hazardous wastes from waste-producing enterprises is yes. Z When =-1, it means that it is not feasible to collect hazardous wastes from waste-producing enterprises in a centralized manner.

2. A method for pushing hazardous waste management information by classification and classification as claimed in claim 1, characterized in that: In step S1, the method of obtaining basic information of hazardous wastes of multiple waste-producing enterprises is: accessing the information database of the industrial and commercial or environmental departments or obtaining it through the Internet.

3. A method for pushing hazardous waste management information by classification and classification as claimed in claim 1, characterized in that: In step S2, the three environmental risk levels of the hazardous waste include: level I hazardous waste, level II hazardous waste and level III hazardous waste; Class I hazardous wastes include: hazardous wastes that are listed in the standard list, can be used or disposed of in an environmentally sound manner and have been declared abandoned by the owner, or hazardous wastes that are reactive and have at least one of the following properties: flammability, corrosiveness, and toxicity; Class II hazardous wastes include: hazardous wastes listed in the standard catalogue and only flammable, or hazardous wastes that are flammable and also have at least one of the following properties: corrosiveness and toxicity; Class III hazardous wastes include: hazardous wastes that are only corrosive and / or toxic.

4. A method for pushing hazardous waste management information by classification and classification as claimed in claim 3, characterized in that: In step S3, the method for distinguishing between general source units and key source units is: When the environmental risk level of hazardous waste is level I, if the maximum annual generation of hazardous waste is 0 to 0.3 t, it is a general source unit; Otherwise, it is a key source unit; When the environmental risk level of hazardous waste is level II, if the maximum annual generation of hazardous waste is 0 to 5 tons, it is a general source unit; Otherwise, it is a key source unit; When the environmental risk level of hazardous waste is level III, if the maximum annual generation of hazardous waste is 0 to 10 tons, it is a general source unit; Otherwise, it is a key source unit.

5. A method for grading and classifying hazardous waste management information as claimed in claim 1, characterized in that: In step S3, the method for classifying waste-producing enterprises according to the waste-producing industry category is as follows: in the waste-producing industries in the hazardous waste list, those with industry codes of P83, M73, M74, M75, Q84, O811, F5151, F5152, F5153, F5251, F5252, F5253, F5265, F5296, G5435, and G594 are classified as Class I industry units; the rest are classified as Class II industry units.

6. A method for grading and classifying hazardous waste management information as claimed in claim 1, characterized in that: In step S4, the environmental management requirements of source classification, internal collection, storage, transfer, centralized collection, entrusted utilization and disposal, and regional platform monitoring of the waste-producing enterprises are obtained through existing standards.

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