With the rapid development of electronic technology, the number of waste circuit boards is increasing day by day. These circuit boards contain a large amount of valuable metals such as gold, silver, and copper, but traditional processing methods are not only inefficient but also cause serious environmental pollution. The emergence of water selection recycling equipment for waste circuit boards provides an innovative solution to this problem. The water selection recycling equipment for waste circuit boards is an advanced device specifically designed for processing waste circuit boards. It mainly consists of a crushing system, a grinding system, a water selection system, a magnetic selection system, a flotation system, and a concentration system. First, the waste circuit boards are crushed into smaller particles by the crushing system, and then the grinding system is used to further refine the particles to improve the efficiency of subsequent processing. In the water selection system, the waste circuit board particles are placed in water, and the different densities of various substances are used to separate them. The metal particles with higher density will sink to the bottom of the water, while the non-metallic impurities with lower density will float on the surface of the water, thus achieving the initial separation of metals and impurities. Next, the magnetic selection system uses the magnetic field to separate the magnetic metal particles from the water, further improving the purity of the metals. For some non-magnetic metals, the flotation system will add specific flotation reagents to make them adhere to the bubbles and rise to the surface of the water, thus achieving separation from other substances. Finally, the concentrated system concentrates the water containing metals to obtain a high-concentration metal slurry. After further processing, these metals can be recycled and reused, achieving the recycling of resources. The water selection recycling equipment for waste circuit boards has many advantages. It not only can efficiently recover the metals in waste circuit boards and improve the utilization rate of resources, but also can reduce environmental pollution. Compared with traditional processing methods, the water selection recycling equipment is more environmentally friendly and energy-saving, meeting the requirements of sustainable development. In addition, the equipment also has the characteristics of high automation, simple operation, and stable operation. It can be operated automatically through a computer control system, reducing manual intervention and improving production efficiency. At the same time, the stability of the equipment can also ensure long-term stable operation and reduce maintenance costs. However, the water selection recycling equipment for waste circuit boards also faces some challenges in the process of promotion and application. For example, the investment cost of the equipment is high, which may pose certain economic pressure for some small enterprises. In addition, the source and quality of waste circuit boards are unstable, which will also affect the processing effect and recycling efficiency of the equipment. To solve these problems, the government and enterprises should strengthen cooperation and increase the research and development and promotion of water selection recycling equipment for waste circuit boards. The government can issue relevant policies to provide enterprises with certain subsidies and preferential treatment, reducing the investment cost of enterprises. At the same time, enterprises should constantly improve the performance and quality of the equipment, reduce production costs, and improve market competitiveness. The water selection recycling equipment for waste circuit boards is an important green recycling device. It provides an efficient and environmentally friendly solution for the processing of waste circuit boards, and plays an important role in achieving the recycling of resources and environmental protection. We should actively promote and apply this equipment and contribute to building a beautiful home.