In today's technological era, the update and replacement speed of electronic products is extremely fast, and as a result, a large number of used circuit boards are produced. If these used circuit boards are not properly handled, they will not only cause serious pollution to the environment, but also waste a large amount of valuable metal resources contained therein. The emergence of complete sets of water separation and recycling equipment for used circuit boards has provided an effective way to solve this problem. The complete set of equipment for water separation and recycling of waste circuit boards mainly consists of multiple parts such as feeders, crushers, screening machines, and flotation machines. The feeder evenly feeds the waste circuit boards into the crusher, which breaks the circuit boards into smaller particles for subsequent processing. The screening machine can screen the crushed circuit board particles according to different sizes and separate particles of different specifications. The flotation machine is the core part of the entire set of recycling equipment. During the flotation process, by adding specific reagents, the metal particles in the circuit board are separated from other impurities and float on the water surface. Then, the metal particles floating on the water surface are scraped out by a bubble scraper and sent to the subsequent treatment process. This water separation and recycling method has the advantages of high efficiency, environmental protection and energy conservation. It can maximize the recovery of metal resources in waste circuit boards and reduce environmental pollution at the same time. The application of complete sets of equipment for water separation and recycling of waste circuit boards not only brings considerable economic benefits to enterprises, but also has significant environmental protection significance. By recycling the metal resources in waste circuit boards, the exploitation of primary metal resources can be reduced and the damage to the environment can be lowered. Meanwhile, the wastewater and waste residue generated during the recycling process can also be effectively treated to meet national discharge standards and prevent secondary pollution to the environment. However, the promotion and application of complete sets of equipment for water separation and recycling of waste circuit boards still face some challenges. Firstly, the source of used circuit boards is unstable and the recycling cost is relatively high. Secondly, the research and development as well as innovation of recycling technology still need to be further strengthened to enhance the efficiency and quality of recycling. In addition, the formulation of relevant policies and regulations also needs to keep pace to provide strong support for the recycling and utilization of waste circuit boards. In conclusion, the complete set of equipment for water separation and recycling of waste circuit boards is an environmental protection device with broad application prospects. It can effectively recycle metal resources from used circuit boards, reduce environmental pollution and contribute to the sustainable utilization of resources. With the continuous advancement of technology and the continuous improvement of policies, it is believed that the complete set of equipment for water separation and recycling of waste circuit boards will be more widely applied, bringing more benefits to our environment and society.