In today's era of rapid technological development, the pace of electronic product updates is increasingly fast, and the number of waste circuit boards is also increasing day by day. If these waste circuit boards are discarded indiscriminately, it will not only cause a great waste of resources, but also cause serious environmental pollution. The emergence of the complete set of water selection and recycling equipment for waste circuit boards is like a key that opens a new door to solving this problem. The complete set of water selection and recycling equipment for waste circuit boards is a highly integrated and intelligent environmental protection equipment. It is mainly composed of several parts, including a crushing system, a water selection system, and a separation system, each of which works closely together to complete the recycling of waste circuit boards. First, the crushing system. When the waste circuit boards enter the equipment, the crushing system will conduct a preliminary crushing process on them. This step is crucial, as it can crush the circuit boards into particles of appropriate sizes, laying the foundation for subsequent water selection and separation work. During the crushing process, the equipment uses advanced technology to effectively reduce the generation of dust and avoid causing secondary pollution to the environment. Next, the water selection system. After the crushed circuit board particles are transported to the water selection tank, they are separated using the difference in buoyancy of different substances in water. Heavy substances such as metals will sink to the bottom of the water, while light substances such as plastics and fibers will float on the water surface. This water selection method is not only efficient but also environmentally friendly, avoiding the large amount of harmful gases produced in traditional pyrometallurgy. Through water selection, most metals and non-metallic substances have been preliminarily separated. Finally, the separation system. The substances after water selection still need further fine separation. The separation system uses a variety of advanced technologies, such as magnetic separation and electrical separation, to completely separate different types of metals and non-metallic substances. The separated substances can be reprocessed and reused, realizing the recycling of resources. The application of the complete set of water selection and recycling equipment for waste circuit boards is of great significance. From the perspective of resources, it can recycle and reuse precious metals such as copper, aluminum, gold, and silver in waste circuit boards, greatly improving the utilization rate of resources and reducing the exploitation of natural resources. From the perspective of the environment, it avoids the pollution of soil, water, and air caused by waste circuit boards, protecting the ecological environment. From the economic perspective, the recycled metals and non-metallic substances can create considerable economic benefits, bringing new development opportunities to enterprises and society. The complete set of water selection and recycling equipment for waste circuit boards is a highly promising environmental protection equipment. Its emergence provides an efficient, environmentally friendly, and economical solution for the recycling and processing of waste circuit boards, and will surely play an important role in the field of e-waste recycling, ushering in a new era of e-waste recycling.