Technical Specification for Pollution Control of Comprehensive Utilization of Waste Circuit Board

In order to implement the Environmental Protection Law of the People's Republic of China, the Environmental Prevention and Control Law of the People's Republic of China on Solid Waste Pollution and the Air Pollution Prevention and Control Law of the People's Republic of China, etc.

Further standardize the disposal of waste PCB, accelerate the upgrading of enterprises in the industry, and promote the sustainable and healthy development of waste PCB disposal and utilization industry.

Recently, Jiangsu issued the Technical Specification for Pollution Control of Comprehensive Utilization of Waste Circuit Board (draft for comments). Details are as follows:

Range

This standard stipulates the requirements of enterprise location and equipment facilities, collection, transportation and storage of waste circuit boards, pollution control requirements, regeneration product control requirements, operation and management requirements, and standardized supervision and implementation.

This standard is applicable to pollution control in the process of collection, storage, transportation and utilization of waste circuit boards. It can also be used to guide the site selection, construction and pollution control management of waste circuit boards comprehensive utilization enterprises.

Normative Reference Documents

The following documents are essential for the application of this document. Where a reference document is dated, only the version of the date indicated applies to this document. The latest version (including all amendments) of undated reference documents is applicable to this document.

GB 3095 Environmental Air Quality Standard

GB 9078 Standard for Emission of Air Pollutants from Industrial Furnace and Kiln
Environmental Noise Emission Standard for GB12348 Industrial Enterprises

GB 15562.2 Graphic Sign of Environmental Protection Solid Waste Storage (Disposal) Field

GB 16297 Comprehensive Emission Standard for Atmospheric Pollutants

GB 18484 Pollution Control Standard for Hazardous Waste Incineration

GB 18597 Standard for Pollution Control of Hazardous Waste Storage

GB 18598 Pollution Control Standard for Hazardous Waste Landfill

GB 34330 General Principles for Identification Standards of Solid Waste

GB 37822 Volatile Organic Compounds Unorganized Emission Control Standard

GB/T 15249.3 Chemical Analysis Method for Complex Gold (Part 3: Determination of Copper Content by Iodometry)

Technical Specification for Construction of HJ/T 176 Hazardous Waste Centralized Incineration and Disposal Project

Determination of mercury, arsenic, selenium, bismuth and antimony in HJ 702 solid waste by Microwave Digestion Atomic Fluorescence Spectrometry

Determination of 22 Metal Elements in HJ 781 Solid Waste by Inductively Coupled Plasma Emission Spectrometry

HJ 2025 Technical Specification for Hazardous Waste Collection, Storage and Transportation

HJ 1024 Solid Waste-Determination of Thermal Burning Reduction by Gravimetric Method

DB 32/3151 Volatile Organic Compounds Emission Standard for Chemical Industry

Terms and definitions

The following terms and definitions apply to this standard.

3.1 Scrap printed circuit board

It refers to the products of circuit boards made of polymer (resin), glass fibre or kraft paper, high purity copper foil and printed components, including waste circuit boards (including components attached to waste circuit boards, chips, plug-ins, stickers, etc.), scraps and undesirable waste in the process of circuit production. Board, etc.

3.2 Comprehensive utilization

It refers to the process of collection, storage and utilization of waste circuit boards. Its purpose is to recover valuable metals from waste circuit boards and realize the resource utilization of waste circuit boards.

3.3 Pretreatment

Refers to the preparatory stage before the separation process, including the dismantling and breaking of waste circuit boards.

3.4 Dry separation

It refers to the mechanical crushing of waste circuit boards and the sorting and recycling of resources by utilizing the different density, conductivity and magnetic properties of the materials.

3.5 High temperature heat treatment

It refers to the activity of separating metal and non-metal substances from scrap circuit boards by means of incineration, pyrolysis, smelting and so on, and recovering metal from scrap circuit boards.

3.6 Recycled products

In the process of comprehensive utilization of waste circuit boards, products with reuse value are mainly copper powder and waste resin powder.

Enterprise Location and Equipment and Facilities Requirements

4.1 General requirements

4.1.1 Enterprises shall obtain corresponding hazardous waste business licenses in accordance with the Regulations on the Administration of Hazardous Waste Business Licenses. It is forbidden to engage in comprehensive utilization of waste circuit boards without business licenses or in violation of the provisions of business licenses.

4.1.2 The total investment of new (existing) projects (excluding land costs) should be no less than 5 million yuan, the investment of environmental protection equipment (facilities) used in PCB treatment and disposal process should be no less than 30% of the total investment, and the annual disposal capacity (initial scale) should be no less than 3,000 tons.

4.1.3 Enterprises should adopt mature and reliable technology, technology and equipment, and meet the overall requirements of harmless disposal of hazardous wastes, clean production and energy saving and emission reduction.

4.2 Location Requirements

4.2.1 The site selection should be in line with the requirements of the overall urban development plan and the urban industrial development plan, and the newly-built enterprises should give priority to the industrial concentration zone or the chemical industry park.

4.2.2 There is no threat of flood, tide or waterlogging in the area where the enterprise is located. The elevation of the facility should be above the flood water level which occurs not less than 100 years in the recurrence period, and should be built outside the submerged areas and protected areas of the existing and planned reservoirs and other artificial reservoir facilities.

4.3 Facilities and Equipment Requirements

4.3.1 Enterprises should adopt dry separation and high temperature heat treatment processes, and should not adopt backward processes such as hydraulic shaking bed separation, open-air incineration, simple acid leaching, cupola incineration, which seriously pollute the environment.

4.3.2 Enterprises should adopt highly automated equipment, and the recovery rate of copper in waste circuit boards should be more than 95%.

Collection, transportation and storage of waste circuit boards---

5.1 Overall Requirements

5.1.1 Containers containing waste circuit boards shall be labeled with hazardous waste that meets the requirements of Appendix A of GB18597.

5.1.2 Relevant provisions of the Regulations on the Management of Hazardous Waste Transfer Joint Lists shall be implemented for the transfer of waste PCBs. In the process of transfer, waste PCBs shall not be dismantled, broken or discarded without authorization.

5.2 Collection

5.2.1 Enterprises producing and utilizing scrap circuit boards should carry out the operation of comprehensive utilization of scrap circuit boards through public information exchange platform and other ways to promote the rational and effective collection of scrap circuit boards.

5.2.2 The collection of waste circuit boards should take necessary precautions to avoid accidents that may cause personal and environmental hazards.

5.3 Transport

5.3.1 Highway transport means of waste circuit boards should meet the requirements of rainproof, leak-proof and rubbish-proof. Transportation should meet the relevant requirements of HJ 2025 and "Management Measures for Hazardous Waste Transfer Bills".

5.3.2 Drivers and escorts of scrap PCB transport vehicles should be trained in hazardous waste and emergency rescue, including fire prevention, leak prevention and emergency liaison.

5.4 Storage

5.4.1 Waste circuit boards and storage facilities of secondary hazardous wastes shall be constructed and managed in accordance with the relevant requirements of GB18597.

5.4.2 Enterprises should reasonably set up the storage area of waste circuit boards and secondary hazardous wastes so as to avoid the phenomenon of overdue storage, and the storage time should not exceed one year.

5.4.3 Enterprises should establish and improve the storage account system, and record the names, sources, quantities, characteristics of hazardous wastes and the types of packaging containers, storage dates, storage locations, discharge dates of wastes and the names of receiving units.

Pollution Control Requirements

6.1 Requirements for Inbound Analysis

6.1.1 Enterprises should have the ability to detect major heavy metal pollutants such as copper, lead, cadmium, chromium and mercury, and to analyze and detect characteristic pollutants according to their sources.

6.1.2 Enterprises should establish a complete account of entry analysis records according to the requirements of "Standardized Management Indicators System of Hazardous Waste Operating Units". A database should be established in the way of "one factory, one file". The data should be kept for more than five years.

6.2 Process Pollution Control Requirements

6.2.1 Pretreatment

6.2.1.1 Waste circuit boards containing electronic components should be dismantled by mechanical dismantling and other methods with less environmental impact, such as cable, plastic, large aluminium parts, electronic components and tin-lead solder.

6.2.1.3 Waste circuit boards without electronic components can directly enter the crushing system for crushing treatment.

6.2.1.4 The automatic feeding process should be adopted in the crushing process, and the crushing system with more than one stage should be selected according to the difference of feeding properties.

6.2.1.5 The negative pressure design should be carried out in the pretreatment process, and the parameters such as wind speed, air volume, air pressure and size of the collecting hood of dust removal equipment should be reasonably determined.

6.2.2 Dry Separation

6.2.2.1 Dry separation should adopt gravity separation, wind separation, electrostatic separation and other combined technologies to improve the separation efficiency.

6.2.2.2 Dry separation process should be based on the dust in the process, reasonably determine the collection hood wind speed, air volume, air pressure, size and other parameters of dust removal equipment, to ensure the overall clean environment of the workshop.

6.2.3 High Temperature Heat Treatment

6.2.3.1 High temperature heat treatment shall adopt a special incinerator for hazardous waste, which shall be carried out in accordance with the relevant requirements of HJ/T176.

6.2.3.2 High temperature heat treatment should strictly control the incineration temperature and time to ensure the full combustion of waste PCB organic matter.

6.3 Terminal Pollution Control Requirements

6.3.1 Air Pollution Control

6.3.1.1 The exhaust gas generated during the disassembly process should be collected under negative pressure. The exhaust gas should be discharged up to the standard by spraying and activated carbon adsorption. The height of the exhaust gas should be no less than 15 meters.

6.3.1.2 Dust produced by dry separation technology should be collected effectively, and exhaust gas discharge up to standard should be achieved by cyclone, bag or electrostatic precipitation. The height of exhaust emission should not be less than 15 meters.

6.3.1.3 Exhaust gas produced by high temperature heat treatment should be equipped with perfect exhaust gas treatment facilities. After purification, the exhaust gas should be discharged through an exhaust cylinder not less than 25 meters high.

6.3.1.4 During the disassembly process, the lead content in flue gas and other pollutants should be controlled in accordance with the regulations of GB16297 and DB32/3151, the particulate matter content in the exhaust gas produced by dry separation technology should be in accordance with the regulations of GB16297, and the exhaust gas emission from high temperature heat treatment process should be in accordance with the regulations of GB9078 and GB18484.

6.3.2 Secondary Waste Pollution Control

6.3.2.1 Waste electronic components produced by pretreatment shall be used or disposed of by qualified hazardous waste business units.

6.3.2.2 Waste resin powder produced by dry separation can be landfilled in domestic waste landfills according to the requirements of the National Hazardous Waste List or entrusted to qualified hazardous waste management units for comprehensive utilization.

6.3.2.3 Incineration ash produced by high temperature heat treatment can be entrusted to metal smelting enterprises for use, and fly ash should be entrusted to qualified units for disposal.

6.3.2.4 Enterprises shall record in detail the quantity and direction of the generation, storage and utilization of secondary wastes, and the data shall be kept for more than five years.

6.3.3 Pollution Control of Unorganized Emissions

6.3.3.1 In engineering design, the phenomenon of unorganized emission should be avoided as far as possible. The exhaust gas generated should be concentrated in the main pipeline through branch pipelines. The unorganized VOCs and dust in and around the plant should comply with the requirements of GB37822 and GB16297.

6.3.3.2 In the process of crushing and sorting waste circuit boards, centralized collection and disposal of dust should be carried out, and discharge after meeting the standards.

6.3.3.3 Enterprises shall conduct regular or irregular safety and environmental inspection, and take timely measures to reduce unorganized emissions.

6.3.3.4 Take emergency measures to incorporate harmful emissions into the organized emission system at the unorganized emission site.

6.3.4 Noise Pollution Control

6.3.4.1 For crushers, separators, fans, air compressors and other mechanical equipment, reasonable noise reduction and noise reduction measures should be adopted.

6.3.4.2 For handling, manual disassembly, vehicle transportation and other non-mechanical noise generation links, it is appropriate to adopt management measures that can reduce solid vibration and collision process noise generation.

6.3.4.3 Factory boundary noise shall meet the requirements of GB 12348.

REGENERATE CONTROL REQUIREMENTs

7.1 Overall Requirements

7.1.1 Enterprises should establish a record system for the utilization of recycled products in the production process, including the time of recycling, the name of recycled products, the quantity of recycled products, the flow direction of recycled products, the use of recycled products, and do a good job of monthly and annual summary.

7.1.2 Before the recycled products of enterprises enter the market circulation, the product label should be set in the striking place of the packaging bag, and the label should indicate the name of the manufacturer, the source, the main components and other information.

7.2 Control Requirements of Copper Powder

7.2.1 Copper powder extracted by dry separation technology should be sold to metal smelting enterprises in a directional way and ensure that the copper content is not less than 90%. The copper content was determined by GB/T 15249.3 method.

7.2.2 Metal smelting enterprises should have corresponding tail gas treatment system to ensure that the tail gas meets the emission standard limits of GB9078 and GB18484.

7.3 Control Requirements for Building Materials Prepared from Waste Resin Powder

7.3.1 Waste resin powder can be synthetically used to prepare outdoor building materials, and according to the nature and composition of waste resin powder, its blending ratio can be determined.

7.3.2 Enterprises should inspect the content of harmful substances (such as lead, cadmium, chromium, mercury, copper and other heavy metals) in each batch of waste resin powder to ensure that the content of harmful substances should not exceed the limit specified in Table 1.

7.3.3 Heavy metals were determined by HJ 702 and HJ781 methods.

Operation Management Requirements

8.1 Basic Operating Conditions

8.1.1 There shall be trained technicians, managers and a corresponding number of operators.

8.1.2 It has complete rules and regulations and labor protection measures to ensure the safe and comprehensive utilization of scrap PCBs.

8.1.3 It has the detection capability and equipment for major pollutants (heavy metals such as copper, zinc, chromium, nickel, lead, etc.).

8.2 Personnel Training

8.2.1 Enterprises should train operators, technicians and managers in relevant laws and regulations, professional technology, safety protection, emergency treatment and other theoretical knowledge and operational skills.

8.2.2 The training content should include the following aspects:

(a) General requirements:

Familiar with the laws and regulations on the comprehensive utilization and management of waste circuit boards;

(2) Familiar with the operation process of waste PCB recycling enterprises;

(3) Master the knowledge of labor safety protection measures, equipment use and personal hygiene measures;

Familiar with emergency operation procedures for handling accidents.

B) Training of operators and technicians should also include:

(1) Normal operation of disposal equipment, including start-up and shutdown of equipment;

(2) Operation and inspection of control, alarm and indication systems, as well as necessary corrective operations;

(3) Emissions from the comprehensive utilization of waste circuit boards should meet the emission standards;

(4) Inspection and troubleshooting of equipment operation;

Manual operation and accident handling in case of accident or emergency;
Daily and regular maintenance of equipment;

Records of equipment operation and maintenance, and records and reports of leakage accidents and other incidents.

8.3 Receiving Waste Circuit Board

8.3.1 The joint list system of hazardous waste transfer shall be strictly enforced in the reception of waste circuit boards.

8.3.2 The number and type of waste circuit boards should be carefully checked during on-site handover, and the conformity with hazardous waste transfer links should be confirmed.

8.3.3 Waste PCB enterprises shall register the received wastes in time.

8.4 Handover and Operation Registration System

8.4.1 In order to ensure the orderly production activities of enterprises, strict succession system should be established, including:

(a) Handover of production facilities, equipment, tools and auxiliary materials;
B) Handover of operation records;

C) Handover personnel should be handed over in kind on the spot;

D) Before the handover of operational records, the shift personnel shall make joint inspection of the site;

(e) When the handover procedure fails to be successfully completed, it shall report to the person in charge of production management in a timely manner;

F) The successor shall sign and confirm the physical and operational records after verification and confirmation.

8.4.2 Enterprises shall establish a record book of hazardous waste operations, which shall record in detail the types, quantities, accidents or other abnormal situations of waste circuit boards collected, stored, utilized and disposed of every day, and keep the transfer slips that need to be archived in accordance with the relevant provisions of the hazardous waste transfer slips. Hazardous Waste Management Record Book and Hazardous Waste Transfer Joint List are kept at the same time.

8.4.3 The local administrative department of environmental protection and other relevant administrative departments shall establish a database based on these accurate information to provide a reliable basis for the management and disposal of waste circuit boards.

8.4.4 The main contents of the records of the operation of production facilities, maintenance of facilities and production activities of recycling and disposal in enterprises include:

(a) Hazardous Waste Transfer Joint Record;

B) Receiving registration records of waste PCB;

(c) Records of the license plate number, source, weight, entry time and departure time of the incoming and outgoing trucks of waste circuit boards;

D) Recording process control parameters of production facilities;

E) Records of maintenance of production facilities;

F) Recording of environmental monitoring data;

G) Records of production accidents and disposal.

8.5 Monitoring and Evaluation System

8.5.1 The main monitoring objects were:

(a) Atmosphere: The emission of pollutant purification facilities should be tested, dust and other indicators should be monitored regularly by dry separation method, oxygen content of flue gas, SO2, NOX, HBr and other indicators should be monitored online by high temperature heat treatment method, and dioxin-like factors should be monitored regularly.

B) Unorganized emissions: Regular monitoring of the unorganized emissions from enterprises and factories should be carried out.

8.5.2 Enterprises shall carry out self-monitoring work in time and publish it regularly to the outside world in accordance with the requirements of monitoring indicators and frequency in self-monitoring schemes.

8.5.3 The facilities, equipment operation and safety status of waste PCB comprehensive utilization enterprises should be regularly inspected and evaluated to eliminate potential safety hazards.

8.6 Emergency Plan

Enterprises should formulate emergency plans in accordance with the requirements of "Guidelines for Hazardous Waste Operating Units to Prepare Emergency Preparedness Plans" (Announcement No. 48 of 2007 issued by the State Environmental Protection Administration), and conduct regular drills.