The latest finishing! Summary of Replies of Ecological and Environmental Competent Departments on Hazardous Waste and Solid Waste

The newly revised Law on the Prevention and Control of Environmental Pollution by Solid Waste in the People's Republic of China (hereinafter referred to as the "New Solid Waste Law") came into effect on September 1, 2020, putting forward higher and stricter requirements for the management of the generation, collection, storage, transportation, utilization and disposal of solid waste. Are common solid wastes in life hazardous wastes?

According to the Law on the Prevention and Control of Environmental Pollution by the People's Republic of China Solid Waste and the Measures for the Administration of Hazardous Waste Business Permits, hazardous waste refers to hazardous waste that is included in the national hazardous waste list or identified in accordance with the national hazardous waste identification standards and identification methods. Characteristic waste. The nature of hazardous wastes that may cause pathogenicity or fatality to humans, animals and plants, or cause harm to the environment.

The following is a summary of the answers to frequently asked questions about hazardous waste and solid waste by the competent department of ecological environment (up to 2022).

1. Question: Are MDI (diphenylmethane diisocyanate) packaging containers hazardous waste? And how to grasp the criteria for judging whether the packaging containers of chemical raw materials used in the manufacturing process are hazardous waste? Such as industrial alcohol empty barrels, industrial acetic acid empty barrels, etc., are they hazardous waste?

Answer: Diphenylmethane diisocyanate (MDI) is listed in the Catalogue of Hazardous Chemicals (2015 Edition),CAS No. 26447-40-5.

The National List of Hazardous Wastes (2021 Edition) stipulates that the hazardous chemicals listed in the Catalogue of Hazardous Chemicals (excluding the hazardous chemicals with the physical hazard of "pressurized gas" in the Catalogue of Hazardous Wastes) that have been declared to be abandoned by the owner, or have not been declared to be abandoned but have been illegally discharged, dumped, utilized or disposed of, and collected or received by the relevant departments according to law and need to be destroyed, hazard characteristics include toxicity.

Waste packaging and containers containing or contaminated with toxic and infectious hazardous wastes are hazardous wastes, code 900-041-49.

2. Q: The oily wastewater generated by the enterprise is mainly the production wastewater generated by the cleaning process of heat treatment. Before the sewage treatment plant is completed, it will be moved away in the form of hazardous waste. After the sewage treatment plant is completed, can the wastewater be discharged into the sewage treatment plant after it is treated by the self-built sewage treatment facility in the plant to meet the influent water quality standard of the sewage treatment plant?

Answer: The "General Principles of Solid Waste Identification Standards" 7.2 stipulates that after physical treatment, chemical treatment, physical and chemical treatment, biological treatment and other wastewater treatment processes, it can meet the relevant regulations and regulations discharged into environmental water bodies or municipal sewage pipe networks and treatment facilities. Waste water and sewage required by discharge standards are not managed as liquid waste. Oily wastewater is not a hazardous waste. Please timely improve the management plan, truthfully declare the registration.

3. Question: Our company is a machine-processing enterprise with die-casting process. The production process is: melting-die-casting-machine-processing-assembly-inspection. Pure aluminum ingots are melted into aluminum water, injected into die-casting molds and die-cast into product blanks, then machined, and finally assembled and inspected for shipment. No slag remover and refining agent are used when melting pure aluminum ingots, but a small amount of aluminum slag (impurities when melting pure aluminum ingots) will be generated. The aluminum content of this aluminum slag is above 70%. Is this aluminum slag hazardous waste? I checked the next 2021 edition of the list of hazardous wastes, and only aluminum ash produced by 091 (mining and dressing of commonly used non-ferrous metal ores), 321 (smelting of commonly used non-ferrous metals) and 323 (smelting of rare and rare earth metals) industries is hazardous waste.

Answer: The National Hazardous Waste List (2021 Edition) stipulates that aluminum ash produced on the surface of waste aluminum and aluminum ingot remelting, refining, alloying and casting melt during the processing of recycled aluminum and aluminum materials, as well as salt slag and secondary aluminum ash produced during the process of recycling aluminum, belong to hazardous waste, code 321-026-48. The industry code in the Directory refers to the main source of the waste, not the only source. Therefore, in determining whether the waste belongs to the list of hazardous wastes and their categories, the principle of giving priority to waste description and supplemented by industry sources should be adopted, and when there is a contradiction or inconsistency between the two, the waste description should be used as the main basis for judgment.

4. Q: Is the discarded hydrated lime [Ca(OH)2 powder] in industrial raw materials belong to hazardous waste or general solid waste?

Answer: The National List of Hazardous Wastes (2021 Edition) clearly states that other strong alkaline solid alkalis and alkali residues that are invalid, deteriorated, unqualified, eliminated and inferior in the production process are hazardous wastes, with codes 900-399-35. It is recommended to analyze the corrosivity of discarded hydrated lime. According to the analysis requirements of "Hazardous Waste Identification Standard Corrosivity" GB5085.7, if the pH value does not exceed 12.5, it is recommended to manage general industrial solid waste.

5. Question: Natural drinking water production enterprises are equipped with simple laboratory, mainly for common microbial detection, medium composition is mainly resin and nutrients, the resulting waste medium after high temperature disinfection treatment belongs to HW49(900-047-49) or belong to general solid waste?

Answer: The National List of Hazardous Wastes stipulates that in production activities, inorganic waste liquid containing cyanide, fluorine, heavy metals and residue and residual liquid from the treatment of inorganic waste liquid produced by chemical and biological laboratories, organic waste liquid containing mineral oil, organic solvent, formaldehyde, waste acid, waste alkali, residual samples with hazardous characteristics, disposable experimental supplies, packaging materials, filter adsorption media, etc. contaminated with the above substances are hazardous wastes, code 900-047-49. Substances that are not listed in the List and are excluded from hazardous properties are not managed as hazardous wastes.

6. Q: Aluminum die casting processing project, using a new aluminum ingot as raw material, aluminum ingot melting, there is a small amount of slag. Is this slag hazardous waste?

Answer: The National List of Hazardous Wastes (2021 Edition) stipulates that aluminum ash produced on the melt surface during the transfer, refining, alloying and casting of electrolytic aluminum liquid, and aluminum ash produced on the melt surface during the remelting, refining, alloying and casting of aluminum ingots during the processing of aluminum materials are all hazardous wastes with codes 321-024-48 and 321-026-48 respectively.

7. Q: A barrel that has been temporarily filled with gasoline has only a slight odor of gasoline, is this barrel a hazardous waste? For gasoline-related hazardous wastes in the National Hazardous Waste Directory, 2021 Edition, only 900-201-08 mentions "waste kerosene, diesel, gasoline and other solvent oils produced by refining petroleum and coal produced during the cleaning of metal parts". Can this barrel filled with gasoline be treated as 900-201-08?

Answer: The "National Hazardous Waste List (2021 Edition)" stipulates that other waste packaging contaminated with mineral oil generated during production, sales, and use are hazardous wastes, code 900-249-08.

8. Q: Is heat transfer oil a hazardous waste? What is the corresponding hazardous waste code type?

Answer: The hot kerosene replaced by the heat conduction oil furnace is hazardous waste, which corresponds to the "waste mineral oil and waste packaging contaminated with mineral oil" (900-249-08) in the hazardous waste list.

9. Q: Is bisphenol A solid epoxy resin a hazardous waste?

Answer: bisphenol A epoxy resin, because of its toxicity, included in the "national list of hazardous waste" HW13 organic resin waste category.

10. Q: Does the alumina used for drying air compressors belong to hazardous waste?

Answer: Alumina can be used as a desiccant, adsorbent and other purposes, to be combined with its adsorption, drying of the specific process and material identification.

11. Q: Do oil tank sludge and grease trap waste belong to hazardous waste?

A: According to the national list of hazardous wastes, the sludge produced by mineral oil tanks and oil-water separation facilities is a hazardous waste. The specific code of oil sludge in mineral oil tanks is 900-221-08, and the specific code of oily scum, sludge and floating oil in oily water separation facilities is 900-210-08.

12. Q: Is the drawing oil, drawing paste and waste packaging barrels generated after use of the cleaning machine hazardous waste?

Answer: The drawing oil and drawing paste produced by the cleaning machine belong to hazardous waste. The waste packaging barrels generated after the use of drawing oil and drawing paste are hazardous wastes (classified according to the codes of waste mineral oil and waste packaging contaminated with mineral oil generated in the process of other production, sales and use, and belong to 900-249-08 wastes).

13. Q: Is the waste scrap produced by unsaturated polyester resin kneading molding material after injection molding a hazardous waste?

Answer: The waste scrap produced after the unsaturated polyester resin kneaded molding material is thermally cured by an injection molding machine (temperature is about 100 degrees Celsius) is not a hazardous waste.

14. Question: Does the waste thermal insulation cotton belong to the hazardous waste? Does the thermal insulation cotton made of aluminum silicate and glass wool belong to the hazardous waste? If it belongs to the waste code, what kind of classification does it belong?

Answer: If the waste thermal insulation cotton is asbestos, it is hazardous waste "asbestos waste (900-032-36) generated by the maintenance and replacement of facilities containing asbestos materials such as diaphragms and thermal insulators and the replacement of vehicle brake linings". If the insulation cotton is made of aluminum silicate and glass wool, hazardous waste should be identified according to the fineness and toxicity of the fiber.

15. Q: Activated carbon contains 1‰ ion exchange resin, belong to ordinary waste or hazardous waste?

A: The National Hazardous Waste List stipulates that waste activated carbon produced in the production process of the chemical industry is hazardous waste, code 900-039-49; waste ion exchange resin is hazardous waste, code 900-015-13.

16. Q: Do Ni-MH batteries belong to hazardous waste? If so, what is the code in the hazardous waste list?

A: The National Hazardous Waste List stipulates that waste lead-acid batteries, nickel-cadmium batteries, and mercury oxide batteries are hazardous wastes. Ni-MH batteries are not included.

17. Q: Is the waste copper wire and waste planing containing cutting fluid hazardous waste? What is the waste category?

Answer: Waste cutting fluid is included in the National Hazardous Waste List, waste category HW09, and the hazardous characteristic is toxicity. Waste copper wire and scrap wire mixed with cutting fluid shall be managed as hazardous waste (see No. 9 in the exemption list).

18. Q: Is the ink bucket with ink hazardous waste?

Answer: The National Hazardous Waste List stipulates that ineffective, deteriorated, unqualified, eliminated, and shoddy inks, dyes, pigments, and paints (excluding water-based paints) generated during production, sales and use are hazardous wastes. The waste code is 900-299-12, and the hazardous characteristics are toxic. Waste packaging and containers that contain or are contaminated with toxic hazardous wastes are hazardous wastes with a waste code of 900-041-49.

19. Q: Is the oily rag produced by the enterprise a hazardous waste?

A: According to the National Hazardous Waste List, the exemption conditions for discarded oily rags are unclassified collection, and the exemption content is that the whole process is not managed as hazardous waste, but does not change the attributes of its hazardous waste. And according to the classification requirements of domestic waste and solid waste management requirements, such waste shall not be intentionally mixed with domestic waste.

20. Q: Does the undisassembled whole waste circuit board belong to the national hazardous waste list? If so, what kind of waste code does it belong?

Answer: The National List of Hazardous Wastes stipulates that waste circuit boards (including waste circuit boards with or without components removed) and waste CPU, video card, sound card, memory, capacitors containing electrolyte, connecting pieces containing precious metals such as gold generated during the dismantling process of waste circuit boards are hazardous wastes, with code 900-045-49.

21. Q: According to 900-252-12 "Waste generated in the process of painting and painting with paint (excluding water-based paint) and organic solvents", is water-based paint residue not hazardous waste?

Answer: "excluding water-based paint" means that water-based paint residue does not belong to hazardous waste listed in the National Hazardous Waste List (2021 Edition). Whether it belongs to hazardous waste needs to be determined according to the Hazardous Waste Identification Standard (GB5085.1 ~ 7) and the Technical Specification for Hazardous Waste Identification (HJ298).

22. Q: Is the acid in waste lead-acid batteries managed according to waste acid or lead-containing waste?

Answer: HW31 lead-containing waste specifies that waste lead plates, waste lead paste and acid liquid generated during the dismantling of non-specific industry waste lead batteries and waste lead batteries belong to HW31 (specific code 900-052031).

23. Q: Are the circulating water used in the overhaul slag wet treatment facility and the sludge from the circulating pool classified as Class 772-006-49 wastes?

Answer: should first of all according to the "solid waste identification standard general rules" to determine whether the circulating water belongs to solid waste, if not belong to solid waste, it does not belong to hazardous waste. The sludge from the circulating pool used in the overhaul slag wet treatment facility belongs to the category 772-006-49 waste.

24. Q: Does 900-047-49 include laboratory waste generated by the laboratory of the enterprise.

A: Including.

25. Q: What are the considerations for both 336-100-21 and 336-100-17 to include "waste tank liquid, tank slag and wastewater treatment sludge from anodic oxidation using chromic acid?

A: The hazardous wastes in the National Hazardous Waste List (2021 Edition) are classified according to the source of generation and material composition, and the classification system is not uniform. In the current National Hazardous Waste List (2021 Edition), it is classified under HW17 and classified as a source of production. However, in view of the large number of sources of such waste generation, in order to avoid a large number of short-term problems of poor waste transfer and disposal due to changes in waste codes, such waste is still retained in the HW21 of the new National Hazardous Waste List (2021 Edition).

Therefore, after the implementation of the new National Hazardous Waste List (2021 Edition), this type of waste can be classified into two categories in the management process, and facilities with 336-100-21 and 336-100-17 utilization and disposal qualifications can handle this type of waste.

26. Q: Should stainless steel electric furnace steelmaking dust be included in HW21 or HW23?

Answer: Stainless steel steelmaking dust mainly contains zinc, so it should be classified as HW23.

27. Q: 900-041-49 "Waste packaging materials, containers and filter adsorption media containing or contaminated with toxic and infectious hazardous wastes" are hazardous wastes. Are waste packaging materials containing or contaminated with corrosive and flammable hazardous wastes included in the National Hazardous Waste List?

A: It is generally believed that it is not, but if it is suspected of "a mixture of hazardous waste and other solid waste", it shall be dealt with according to the serial number question 93.

28. Q: 221-002-35 "Waste lye from cooking and pulping during alkali pulping" refers to black liquor or white liquor?

A: The black liquor and white liquor produced by alkaline (caustic soda and sulfate) cooking and pulping belong to waste lye, which belongs to 221-002-35 in the National Hazardous Waste List (2021 Edition).

29. Q: How do you understand the "high boiling point" in 900-013-11 "High boiling point bottoms from distillation, distillation and pyrolysis processes in other chemical production processes (excluding processes using biomass as the main raw material)"?

Answer: The boiling points of the purified substances and the impurities contained in the distillation, distillation and pyrolysis processes are different, with high and low boiling points, which are higher than those of the substances to be obtained, and are called "high boiling point impurities". Therefore, the distillation, distillation and pyrolysis processes, which are purified and remain in the bottom of the kettle, belong to the "high boiling point residue".

30. Q: 900-015-13 type of waste in the "industrial wastewater treatment process of waste ion exchange resin" how to understand? Industrial enterprises boiler softened water in the process of waste ion exchange resin produced belong to this type of waste?

Answer: The industrial wastewater referred to in this clause refers specifically to the wastewater produced by the production process of industrial enterprises and does not include the softened water of boilers of industrial enterprises. Therefore, the waste ion exchange resin produced in the process of boiler softening water treatment in industrial enterprises does not belong to this kind of waste.

31. Q: Is a certain amount of waste liquid produced by the process of online monitoring operated by a third party hazardous waste? Is it okay for him to dispose of the waste liquid in the agreement?

Answer: According to the "Solid Waste Identification Guidelines", online monitoring of waste liquid belongs to solid waste. Whether it is hazardous waste shall be determined according to the national hazardous waste identification standards and methods. COD online monitor waste liquid often contains strong acid and mercury, chromium and other heavy metals, in practice according to hazardous waste management, waste code 900-047-49.

32. Q: Should oil sewage from ships at sea be included in hazardous waste management?

Answer: In accordance with the relevant provisions of the "Water Pollution Prevention and Control Law", the discharge of oily sewage and domestic sewage by ships shall meet the ship's pollutant discharge standards. Vessels engaged in marine navigation that enter inland rivers and ports shall comply with the standards for discharge of pollutants from inland rivers. Residual oil and waste oil from ships shall be recovered and shall not be discharged into any water body. The Ministry of Communications "Port Operation Management Regulations" and other regulations require that: to provide ships with docks, barge anchorages, buoys and other facilities, there should be corresponding ship pollutants, waste reception capacity and corresponding pollution emergency treatment capacity, including necessary facilities, Equipment and equipment. Therefore, the oily wastewater from the ship shall be treated by the corresponding treatment facilities at the wharf according to the regulations. Waste mineral oil generated from sewage treatment by the corresponding treatment facilities at the wharf is hazardous waste and must be treated by a qualified unit.

33. Q: Is the product turnover barrel a solid waste?

A: Cleaning and reusing turnover barrels contaminated with trace products is a common practice in related industries. Having cleaning capability is a necessary condition for enterprises to realize the reuse of turnover barrels. Therefore, under the premise that the enterprise has the ability to clean the product turnover barrels, the turnover barrels contaminated with trace products can be considered as "substances that can be used for their original use without repair and processing", that is, they are not managed as solid waste. At the same time, product manufacturers should bear the responsibility for pollution prevention and control in the collection, storage, transportation, and cleaning of product turnover barrels, and take effective measures to avoid environmental pollution.

34. Q: What kind of hazardous waste is the waste tin residue produced after tin plating for treatment?

A: The determination of waste classification in the hazardous waste list should be based on waste characteristics, and the waste tin slag generated in the production process of the circuit board industry is recommended to be treated according to 336-059-17.

35. Q: What are the main hazardous wastes produced by scientific research institutions and university laboratories?

Answer: According to the relevant provisions of "900-047-49" waste in the "HW49 Other Waste" of the National Hazardous Waste List, the residue and residual liquid from the treatment of cyanide, fluorine, inorganic waste liquid and heavy metal waste liquid generated by chemical and biological laboratories (excluding infectious medical laboratories and laboratories of medical institutions) in production, research, development, teaching and environmental testing (monitoring) activities, organic waste liquid containing mineral oil, organic solvent, formaldehyde, waste acid, waste alkali, residual samples with dangerous characteristics, disposable experimental articles contaminated with the above substances (excluding discarded laboratory articles such as beakers, measuring devices, funnels, etc. cleaned according to laboratory management requirements), packaging materials (excluding reagent packaging materials and containers cleaned according to laboratory management requirements), filter adsorption media, etc.

36. Q: What are the typical hazardous wastes in the auto repair industry?

Answer: The common ones are waste oil filter element (900-041-49), waste lead-acid battery (900-044-49), waste activated carbon (900-041-49), waste paint bucket (900-041-49), waste organic solvent (900-040-06), waste motor vehicle exhaust purification catalyst (900-049-50), waste filter cotton (900-041-49), waste paint residue (900-252-12), etc.

37. Q: How often does medical waste need to be cleared?

Answer: According to the "Regulations on the Management of Medical Waste", the temporary storage time of medical waste shall not exceed 48 hours.

38. Q: How should pesticide packaging waste be managed?

Answer: The Administrative Measures for the Recycling and Treatment of Pesticide Packaging Wastes (Decree No. 6 of 2020 of the Ministry of Agriculture and Rural Affairs, Ministry of Ecological Environment) will come into effect on October 1, 2020. Pesticide operators and pesticide packaging waste recycling stations (points) shall establish pesticide packaging waste recycling ledgers to record the quantity and whereabouts of pesticide packaging waste, and the means of transport shall meet the requirements of rain prevention, leakage prevention and scattering prevention. The resource utilization of pesticide packaging waste shall not be used to manufacture catering utensils, children's toys and other products to prevent harm to human health, and resource utilization units shall not resell pesticide packaging waste.

39. Q: Can waste packaging barrels be recycled by manufacturers?

Answer: Part 6 of the "General Principles for the Identification of Solid Wastes" (GB34330-2017) clearly states that any substance that can be used for its original purpose without repair and processing is not a solid waste, and of course it is not a hazardous waste. Therefore, the original use of containing or directly contaminated with hazardous waste packaging, containers, do not belong to hazardous waste, can be directly recycled. However, the manufacturer needs to process the waste packaging barrel (including cleaning, etc.) and sell it together with the product-this situation cannot be recycled by the manufacturer!

40. Q: Can waste lead-acid batteries be given to sales stores?

A: Participating in the pilot unit of the producer responsibility extension system, the stores with recycling outlets can be recycled. Specific pilot units announced by the Provincial Department of Ecological Environment.

41. Q: Can enterprise waste acid be discharged into the sewage disposal facilities in the plant?

Answer: The pre-condition of the enterprise is that the construction of sewage treatment and disposal facilities in the plant should strictly follow the requirements of the EIA document to ensure that the treatment and disposal facilities are stable and meet the discharge standards. Do not dilute the discharge!

42. Q: How is laboratory waste managed?

Answer: Each laboratory waste generation unit shall do a good job of classified collection in accordance with the relevant requirements of the Technical Specification for Collection of Laboratory Waste Chemicals (GB/T31190-2014) and the Pollution Control Standard for Hazardous Waste Storage (GB8597-2001), and build standardized storage facilities that meet the requirements of seepage prevention and leakage prevention, and according to the common organic, common inorganic, containing heavy metals, mercury and other high-risk substances (except drugs), highly toxic waste reagents, flammable and explosive, laboratory-generated medical waste and other seven-point method for classified storage, in accordance with the requirements of relevant laws and regulations to implement hazardous waste declaration and registration, management plan filing, transfer form and other management systems, to achieve classified collection and storage, entrusted disposal according to law.

43. Q: Notebook waste lithium battery disposal problem?

A: Undisassembled lithium batteries are not hazardous waste and should be recycled as general industrial solid waste.

44. Q: When determining whether a waste belongs to a hazardous waste and its category listed in the National Hazardous Waste List (2021 Edition), is the priority based on the industry source or the waste description?

A: There are a wide range of sources of hazardous waste, and there is a phenomenon that the same waste comes from multiple industries. The industry code in the National Hazardous Waste List (2021 Edition) refers to the main source of the waste, not the only source. Therefore, when determining whether the waste belongs to the hazardous waste and its category listed in the National Hazardous Waste List (2021 Edition), the principle of giving priority to waste description and supplemented by industry sources should be adopted, and when there is a contradiction or inconsistency between the two, the waste description should be used as the main basis for judgment.

45. Q: As an industrial agglomeration base, supporting the construction of a common hazardous waste temporary storage room, the settled enterprises will hand over hazardous waste to the park for unified registration and management, and then the park will entrust a qualified hazardous waste disposal company for disposal, the park needs to apply for the corresponding hazardous waste business license?

Answer: According to Article 80 of the Law on the Prevention and Control of Environmental Pollution by the People's Republic of China Solid Waste, units engaged in the collection, storage, utilization, and disposal of hazardous waste shall apply for a license in accordance with relevant state regulations.

46. Q: Our company pretreats domestic waste incineration fly ash HW18(772-002-18) through water washing process, and the fly ash after water washing and chlorine removal is handed over to cement kiln for collaborative disposal. According to the hazardous waste exemption management list, the collaborative disposal process of domestic waste incineration fly ash cement kiln is not managed as hazardous waste, is it possible not to apply for a hazardous waste business license?

Answer: According to the National Hazardous Waste List, fly ash that meets the requirements of the Pollution Control Standard for Cooperative Disposal of Solid Waste in Cement Kilns and the Environmental Protection Technical Specification for Cooperative Disposal of Solid Waste in Cement Kilns after pretreatment can enter the cement kiln for cooperative disposal. The disposal process is not managed as hazardous waste, but the transfer process still needs to implement a hazardous waste transfer form. The cement kiln co-disposal unit that intends to receive fly ash shall register the unit information of "exempt unit-cement kiln co-disposal unit" with the provincial solid waste environmental supervision platform as required, and shall be examined and checked by the local ecological environment competent department.

47. Q: What standards should be followed for the construction of temporary collection and storage warehouses for general industrial solid waste in an enterprise, or should they meet the basic "three preventions" conditions?

Answer: general industrial solid waste storage facilities need to meet the "general industrial solid waste storage and landfill pollution control standards" (GB 18599), "environmental protection graphic signs solid waste storage (disposal) site" (GB 15562.2) and other relevant standards and statutory requirements.

48. Q: Should a hazardous waste business license be obtained for the storage of solidified and chelated fly ash from a domestic waste incineration power plant (meeting the requirements for entering a domestic waste landfill in the Pollution Control Standards for Domestic Waste Landfill Sites (GB16889))?

Answer: The National List of Hazardous Wastes stipulates that domestic waste incineration fly ash belongs to hazardous waste, with code 772-002-18. According to its appendix "Hazardous Waste Exemption Management List", the exemption management link for domestic waste incineration fly ash is the transportation and disposal link. Therefore, the unit responsible for storing fly ash needs to apply for a hazardous waste business license. The "General Principles of Hazardous Waste Identification Standards" 6.2 stipulates that, unless otherwise provided by relevant national regulations and standards, solid waste generated after the disposal of hazardous waste with toxic and hazardous characteristics is still hazardous waste. Therefore, the storage unit of domestic waste incineration fly ash after solidification and chelation shall obtain a hazardous waste business license in accordance with the provisions of the Measures for the Administration of Hazardous Waste Business License.

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