| 英文摘要 |
This project has been conducted according to the four core objectives of the project as "mastering domestic and foreign metal waste resource recycling technologies and strategies, and promoting domestic metal waste resource recycling", "promoting chemical recycling, mastering domestic chemical material flow related data and the current status of recycling operations. "to improve the baseline data of chemical waste resources", "to improve diversified resource recycling channels, and establish a chemical leasing demonstration guidance system to strengthen industrial management measures from the source" and "to cooperate with the implementation of relevant administrative operations in this project to improve the effectiveness and quality of the project implementation”.
Metal resources are becoming more and more important internationally especially in the fields of technology and industrial applications, such as the gallium, germanium, lithium, cobalt, niobium, titanium, vanadium, etc. strategical species that are needed for energy storage systems, electronic products manufacturing, aerospace engineering and other fields. A comprehensive inventory of importation, production and recycling of domestic metal resources showed about 4.9 million metric tons of wastes were recycled in 2023, of which about 2.94 million metric tons were recycled metal products. In order to predominate the paths that can further improve the potential for domestic metal materials recycling, this project has further established a metal composition index table to facilitate the understanding of the species and contents of domestic metal recycling so that resource recycling can be managed more precisely.
Chemical resources are of international importance, especially in the industrial production, manufacturing and high-tech industries. The recycling and reuse of waste acids, waste solvents and other chemicals are of great significance to environmental protection and sustainable resource utilization. Key chemical products such as phosphoric acid, isopropyl alcohol, sulfuric acid, liquid ammonia, etc. are widely used in semiconductor manufacturing, electronic product cleaning, chemical production and other fields. An inventory of chemical waste resource in 2023 showed chemical usage dropped by about 6 million metric tons in comparison to 2022, and the amount of waste liquid reached 1.54 million metric tons, of which 87% can be recycled. In order to further establish the paths and species of chemical waste resources for recycling, the project has further evaluated the circulation distribution of phosphoric acid and hydrochloric acid (pickling liquid) as well as the quality of recycled products whether they could be advanced to more high-valued applications. Additionally, in order to enhance the implementation of waste flow diversion management at the source of industry so as to solve the problem with difficulties in distinguishing the types of wastes and waste codes that has made it difficult to identify and manage the promotion and matching for industrial recycling, this project has sent 56 questionnaires regarding the diversion of waste flow and 128 questionnaires regarding the updating of waste codes to understand the status of industrial waste flow diversion and the need for updating waste codes.
Chemical leasing in practice can help resource reuse to achieve the dual benefits of carbon reduction and waste reduction, as well as to promote supplier responsibility in product management practices. International chemical leasing models collected in this project showed the Netherland’s Take Back Chemicals model close to the model being promoted domestically. In addition, the project also reviewed the chemical leasing and recycling service demonstration cases conducted here in 2023 and by which to formulate the corresponding monitoring and management mechanisms, as well as the reporting guidelines and the management rules (draft version). Besides, the project also conducted analysis of the types of industries suitable for chemical leasing services so as to guide more pilot cases and to improve the formulation of relevant
regulations.
In terms of administrative support, the project has assisted in the routine Metals and Chemicals Division of Promotion Committee Meetings, the Cross Department Resource Circulation Business Exchange Meetings, as well as the expert consultation meetings and other meetings. In addition, the project has accomplished a total of 15 cases of the project related temporary requirements.
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