Current Situation and Development Trend of Waste Circuit Board Recycling

Reasons for waste circuit boards: In today’s electronic age, smart appliances are completely flooding our lives. Every smart appliance or non-smart appliance is controlled by a circuit board, and each circuit board has its own lifespan, that is, the scrapping period, and some appliances are directly turned into discarded appliances due to external influences, and cannot work . This directly leads to the generation of waste circuit boards.

Hazards of circuit boards: In the world, billions of circuit boards leave the factory every day in circuit board manufacturers. In daily life, there are probably hundreds of millions of tons of waste circuit boards accumulated. Once the circuit boards are piled up, it will cause harm to our ecological environment and human health over time. No matter which circuit board will produce organic pollution to society. In addition, the electronic components on the PCBA board will also cause pollution. The most important pollution is metal pollution, especially heavy metals such as tin, lead and cadmium, which directly endanger human health.

Professionally speaking, waste printed circuit boards are a mixture of glass fiber reinforced resin and various metals. They are typical electronic wastes. A large number of teratogenic, mutagenic and carcinogenic substances such as brominated flame retardants will cause serious harm to the environment and human health.

Recycling and treatment of waste circuit boards: At present, direct burial, incineration, water washing and cracking are generally used in many areas, but toxic substances are released, which can easily cause serious secondary pollution of the air or soil. The national environmental protection policy It is also not allowed to do so or limit these processing modes. The international method of recycling and processing waste circuit boards is a physical method. This method has the advantages of low environmental pollution, high comprehensive utilization rate, and high added value. It is the development trend of electronic waste treatment in the future; its disadvantage is that it The cost is slightly higher than the recycling mode of incineration or washing. Due to the high toughness of waste circuit boards, most of which are flat, it is difficult to separate metals and non-metals through one-time crushing, and there are many types of substances contained in it, and the separation and decomposition process is complicated. These characteristics determine the recycling of waste circuit boards. A certain degree of difficulty.