GB/T 38785-2020General technical requirements of thin-film photovoltaic module recycling and reusing for use in building (English PDF)

1 Scope

This standard specifies the basic principles, collection, transportation and storage, dismantling, processing, recycling, management of thin-film photovoltaic module for use in building (hereinafter referred to as "modules").

This standard applies to the recycling and reuse of cadmium telluride and copper indium gallium selenium thin-film photovoltaic module's waste modules.

The recycling and reuse of other thin-film photovoltaic module modules can refer to this standard.

2 Normative references

The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this standard.

GB 8978 Integrated waste water discharge standard

GB 16297 Comprehensive emission standard of air pollutants

GB 18484 Pollution control standard for hazardous wastes incineration

GB 18599 Standard for pollution on the storage and disposal site for general industrial solid wastes

GB/T 20861-2007 Terminology of waste product recovery

GB/T 23685 General technical specifications of recovering for waste electrical and electronic equipment

GB/T 30102 Plastics - Guidelines for the recovery and recycling of plastics waste

HJ/T 181 Environmental projection technical specification for centralized

3 Terms and definitions

4 Basic principles

4.1 During the disposal process, priority shall be given to the reuse of the parts

5 Collection, transportation and storage

6 Disassembly

6.1 To disassemble the waste modules, it shall first remove the bracket and frame (or back rail); then remove the termination; finally the laminate.

6.2 The integrity of the laminate shall be ensured when the waste modules are disassembled.

6.3 All parts and modules taken out in advance shall not be discarded randomly; they shall be carried out in accordance with the provisions of 7.1.4, 7.2, 7.3 of this standard.

6.4 The parts and materials removed from the disassembly shall be stored separately and clearly marked.

6.5 The disassembly site shall comply with the requirements in HJ/T 181.

a) Wet method: Directly use mechanical crushing and then oxidation acid leaching treatment;

b) Fire method: The mixture is recovered by high-temperature evaporation and cooling, then carry out oxidized acid leaching treatment.

7 Disposal

7.4.2 When using mechanical crushing methods to dispose of waste modules, separate or isolated work areas shall be set up. The crushing and sorting process shall be equipped with dust-proof and dust-removing facilities; the exhaust gas after treatment shall meet the requirements in GB 16297.

7.4.5 The strong acids, strong bases and strong oxidants used in the recycling process shall be clearly marked or warned.

7.4.6 Waste inorganic acids or organic solvents and other chemicals are prohibited from being discharged at will, which shall be treated or utilized by professional organizations.

7.4.7 When the incineration method or pyrolysis method is used for disposal, it shall be equipped with flue gas treatment facilities and explosion-proof and alarm devices; when the incineration method is used for disposal, the emission of air pollutants shall meet the requirements in GB 18484; when the pyrolysis method is used for disposal, the atmospheric pollutant discharge shall meet the requirements in GB 16297.

8 Recycling

8.3.2 After the waste plastics containing flame retardants are processed, if their quality meets the relevant quality standards, they can be used as raw materials for the production of plastic products containing flame retardants.

8.3.3 For recycled rubber materials, it may use high-temperature cracking technology, to recover chemical raw materials of small molecule.

8.3.4 Polymer materials that cannot be recycled are used for energy recovery through incineration; it shall be equipped with a complete exhaust gas energy recovery and harmless flue gas treatment system.

9 Management

9.1 Recycling companies shall establish a complete management and statistical information system for waste modules.

9.2 The disposal process records and pollutant discharge monitoring records of waste modules shall be traceable; the records shall be kept for more than 3 years.

9.3 Recycling and disposal enterprises shall establish wastewater and waste gas treatment systems; regularly monitor and record the concentration of pollutants in the discharged wastewater and waste gas. Wastewater discharge shall meet the requirements in GB 8978; exhaust gas discharge shall meet the requirements in GB 16297.

9.5 Recycling enterprise shall develop complete emergency handling procedures; have complete protective equipment and protective measures;