In today's era of rapid technological development, the update and replacement of electronic products are happening at an increasingly rapid pace, resulting in an ever-increasing number of waste circuit boards. If these waste circuit boards are simply discarded, they will not only cause environmental pollution but also waste a large amount of recyclable resources contained therein. The emergence of water selection recycling equipment for waste circuit boards has provided an effective solution to this problem. Waste circuit boards contain a variety of metals and non-metallic materials, such as precious metals like copper, aluminum, gold, and silver, as well as fiberglass and resins. Traditional recycling methods are often inefficient and prone to causing secondary pollution to the environment. However, water selection recycling equipment, with its unique advantages, has become a leader in the field of waste circuit board recycling. This equipment is mainly composed of a crushing system, a screening system, and a water selection system. First, the crushing system will initially crush the waste circuit boards into smaller particles. This step can effectively separate various materials in the circuit boards, laying a foundation for subsequent recycling work. Next, the screening system will screen the crushed particles, separating different sizes of particles for more accurate recycling. The water selection system is the core component of this equipment. It uses the differences in buoyancy and sedimentation speed of different materials in water to separate metal and non-metallic materials. During the water selection process, metal particles, due to their high density, will quickly sink to the bottom of the water, while non-metallic particles will float on the surface of the water. In this way, the separation of metals and non-metals can be efficiently achieved, greatly improving the recycling efficiency. The application of water selection recycling equipment for waste circuit boards is of great significance. From the perspective of resource utilization, it can fully recycle the recyclable resources in waste circuit boards, reducing the dependence on natural resources. These recycled metals and non-metallic materials can be re-used in production, achieving resource recycling and reducing production costs. From the perspective of environmental protection, the equipment effectively avoids the pollution of soil and water by waste circuit boards, protecting the ecological environment. However, the promotion and application of water selection recycling equipment for waste circuit boards currently face some challenges. For example, the equipment is expensive, which is difficult for some small recycling enterprises to afford; some regions do not pay enough attention to the recycling of waste circuit boards and lack relevant policy support. But with the continuous advancement of technology and the improvement of people's environmental awareness, I believe these problems will gradually be solved. Water selection recycling equipment for waste circuit boards is an environmentally friendly equipment with broad development prospects. It provides an efficient and environmentally friendly solution for the recycling and utilization of waste circuit boards and will play an increasingly important role in the fields of resource regeneration and environmental protection.