GB/T 41012-2021Technical specifications for collection and recovery of non-ferrous metal contained solid waste (English PDF)

7.1 Physical processing

It is a treatment method, that is according to the basic physical properties of non-ferrous metal contained solid waste, changes the morphology of solid waste by physical methods without destroying the composition of solid waste, including compaction, crushing, screening, sorting, dehydration, evaporation, extraction, adsorption and other methods. Before recovery, the necessary initial treatment of non-ferrous metal contained solid waste can be carried out, mainly including crushing, sorting and other processes. For non-ferrous metal contained sludge and semi-solid waste residues, mechanical dehydration can be carried out by means of pressure filtration or drying and dehydration can be carried out using equipment such as thermal ovens and steam drying ovens.

7.2 Chemical treatment

It is a treatment method, that is according to the basic chemical properties of non-ferrous metal contained solid waste, undergoes chemical transformation to obtain valuable metals or metal compounds and other substances, including redox, electrolysis, electrowinning, extraction, separation, leaching and other hydrometallurgical methods, and roasting, smelting and other pyrometallurgical methods. See Annex A for the typical utilization process of non-ferrous metal contained solid waste.

7.3 Biological treatment

It is a treatment method that uses biochemical action to treats non-ferrous metal contained solid waste to obtain valuable substances or energy, such as microbial metallurgy.

8.1 Construction requirements

The site selection of the recovery of non-ferrous metal contained solid waste shall meet the requirements of the ecological protection red line. Combining with the status quo of environmental quality and related planning and functional zoning requirements, determine the environmental quality objectives and the corresponding environmental management and control, pollutant discharge control requirements. The project shall be able to maintain stable environmental quality and shall not be lower than the environmental quality standards for air, soil and water. The project shall build supporting environmental protection facilities in accordance with the requirements of environmental protection "three simultaneous" and apply for environmental protection acceptance upon completion of the project according to law.

8.2 Pollution control requirements

8.2.1 In the process of recycling non-ferrous metal contained solid waste, the discharge of air, water and solid pollutants shall meet the requirements of national and local pollutant discharge standards.

8.2.2 The waste residue generated in the process of treatment and disposal shall be identified according to the provisions of GB 34330 and GB 5085 (all parts), and shall meet the following provisions:

a) Those identified as hazardous wastes shall be collected, stored and transported according to the requirements of GB 18597 and HJ 2025, and shall be handed over to qualified units for processing.

b) If it is identified as general industrial solid waste, it shall be further processed and utilized, or stored or landfilled in accordance with the requirements of GB 18599.

8.3 Resource utilization requirements

Enterprises that recycle non-ferrous metal contained solid waste shall take energy-saving and emission-reduction measures, so as to reduce energy consumption, improve wastewater recycling rate, and minimize new water consumption. The recycling rate of valuable resources shall be continuously improved. The heat energy generated during the recycling process is utilized in an appropriate form.

9.1 Comprehensive utilization requirements

9.1.1 Recycling products of non-ferrous metal contained solid waste, when they comply with the quality standards of products produced by substituted raw materials established by the state, local or common in the industry, shall meet the technical standards for the prevention and control of environmental pollution by solid waste, the subsequent environmental management requirements and the technical requirements of downstream industries. If there is a stable market demand, the recycling products shall be managed according to the products.

9.1.2 Metal enrichment obtained after chemical leaching, precipitation, dehydration and drying, if can be used as raw and auxiliary materials for downstream industries, shall be managed with reference to the requirements for the corresponding raw and auxiliary materials.

9.1.3 Recycling and processing products of non-ferrous metal contained solid waste, if they meet the requirements of the comprehensive utilization standard of solid waste and the pollution prevention and control standard and at the same time meet the technical requirements of the user, can be used as an additive for the preparation of building materials, or as a raw material or ingredient for making lightweight aggregates, ceramic materials, magnetic materials.

9.2 Final disposal requirements

9.2.1 Treatment and disposal products of non-ferrous metal contained solid waste, if they do not meet national or industry standards for related products and have no stable market demand, are managed as solid wastes. […]