In today's rapidly changing era of electronic technology, the disposal of electronic waste has become a global environmental challenge. Among them, waste circuit boards are extremely difficult to process due to their complex composition and the presence of heavy metals and harmful substances. However, with the birth of the "Water Selection Recovery Complete Equipment for Waste Circuit Boards", a green revolution in resource recycling is quietly emerging. The Water Selection Recovery Complete Equipment for Waste Circuit Boards is an automated system based on the principle of hydraulic sorting. Its core process is to use the buoyancy and flow characteristics of water to efficiently separate the metals and non-metallic components of the circuit boards after crushing. Specifically, this equipment typically includes crushing, sorting, concentration, and dewatering steps. First, the waste circuit boards are crushed into fine particles by a crusher; then, these particles enter the hydraulic sorting machine, where the density differences between metals and non-metallic materials are used to achieve precise separation - the metal particles sink to the bottom of the water, while the non-metallic fragments float out with the water flow; finally, through concentration and dewatering devices, the metal powder and resin fibers are respectively recovered. The entire process operates in a closed loop, with water resources being recycled, significantly reducing energy consumption and pollution. The advantages of this equipment are significant. First, it achieves efficient resource recovery. The precious metals such as copper, gold, and silver in the circuit boards even have a content far higher than that in primary ores. Through water selection recovery, not only can the pressure on mineral resources be alleviated, but also considerable economic value can be created. Second, the environmental benefits are outstanding. Compared with traditional incineration or acid leaching treatment, the water selection method avoids the generation of toxic gases such as dioxins and also prevents strong acid wastewater from polluting soil and water sources. Third, the high degree of automation reduces the risk of human exposure to harmful substances, meeting modern industrial safety standards. It is precisely these advantages that make water selection recovery technology an important development direction in the field of electronic waste disposal. However, the promotion of this technology still faces challenges. On the one hand, the upfront investment in the equipment is high, posing a financial pressure on small and medium-sized recycling enterprises; on the other hand, the subsequent utilization path of the fine non-metallic powder generated during the processing process still needs to be expanded. But encouragingly, with the tightening of environmental policies and the iteration of technologies, more efficient and low-cost water selection equipment is constantly emerging. Some innovative solutions have even begun to combine the Internet of Things and artificial intelligence to achieve intelligent control and data optimization of the sorting process, indicating that the resource recycling industry is moving towards intelligence and refinement. Looking at human industrial civilization, every technological advance often comes with environmental costs, while the Water Selection Recovery Complete Equipment for Waste Circuit Boards is precisely a correction and compensation of human behavior. It is not only a technical tool, but also a carrier of ecological civilization. Guided by the concept that "green water and blue mountains are just as valuable as gold and silver", this technology will help us move closer to the ideal of a resource-recycling society. In the future, with the continuous growth of global electronic waste, water selection recovery technology will undoubtedly play a more critical role in the path of green and low-carbon development, reducing the burden on the earth and preserving more resources and hope for future generations.