With the widespread use and rapid upgrading of electronic devices, the number of waste circuit boards is increasing day by day. These waste circuit boards contain a large amount of valuable metals such as copper, gold, silver, tin, etc. If they can be effectively recycled and utilized, it will not only reduce the dependence on natural resources, but also reduce environmental pollution and achieve sustainable development of resources. And the water selection recycling equipment for waste circuit boards is the key to achieving this goal. The water selection recycling equipment for waste circuit boards is an advanced technical equipment specifically used to process waste circuit boards. It is mainly composed of several parts, including a crushing system, a screening system, a washing system, a flotation system, and a concentration system. First, the waste circuit boards enter the crushing system and are processed by the crushing equipment, which crushes them into smaller particles for subsequent processing. After crushing, the circuit board particles enter the screening system, where they are separated from large impurities and fine dust by different mesh sizes of the sieve. Next, the screened circuit board particles enter the washing system, where they are further removed from mud, dust, and other impurities under the action of water. After washing, the circuit board particles enter the flotation system, where they are separated from metal minerals and gangue minerals by adding specific flotation reagents. The flotation reagents can selectively adsorb on the surface of metal minerals, making them float on the water surface, while the gangue minerals sink to the bottom, thus achieving the enrichment of metal minerals. Finally, the flotation-separated metal minerals enter the concentration system, where they are processed by the concentration equipment to remove the water and obtain high-grade metal concentrates. The metal concentrates can be further smelted and processed to extract useful metals. The water selection recycling equipment for waste circuit boards has many advantages. Firstly, it adopts advanced water selection technology, which can effectively remove impurities from waste circuit boards and improve the recovery rate of metals. Secondly, the equipment has high automation, large processing capacity, and low energy consumption, which can reduce production costs and improve production efficiency. In addition, the water selection recycling process does not generate secondary pollution, meets environmental protection requirements, and is conducive to the sustainable utilization of resources. However, the water selection recycling equipment for waste circuit boards also faces some challenges in the process of promotion and application. For example, the sources of waste circuit boards are complex and their compositions are diverse, which brings certain difficulties to the processing of the equipment. In addition, the maintenance and management of the equipment also require professional technicians, increasing the operating costs of enterprises. In order to promote the widespread application of the water selection recycling equipment for waste circuit boards, the government and enterprises should strengthen cooperation, increase support for the environmental protection industry, and raise public awareness of environmental protection. At the same time, enterprises should continuously increase R&D investment, improve the performance and stability of the equipment, and reduce production costs, providing a more effective solution for the recycling and utilization of waste circuit boards. The water selection recycling equipment for waste circuit boards is an environmentally friendly and resource recovery technology with broad application prospects. By making rational use of this equipment, we can achieve the harmless treatment of waste circuit boards and the recycling of resources, making a positive contribution to the construction of a resource-saving and environmentally friendly society.