Today, with e-waste increasing at a rate of 50 million tons per year, a piece of scrap circuit board the size of a fingernail can pollute 3 tons of groundwater. Faced with this shocking figure, China's independently developed complete set of water-based recycling equipment for scrap circuit boards, like a "green scalpel", is using scientific technology to solve the global challenge of e-waste processing. The core value of this equipment lies in realizing the circular economy concept of "turning waste into treasure". Traditional incineration methods produce highly toxic substances such as dioxins, while acid washing methods are prone to causing heavy metal pollution. However, through 12 processes including three-stage crushing, high-pressure hydraulic sorting, and electrostatic separation, the water-based recycling equipment can recover 98% of metals such as copper, gold, and silver from circuit boards, and achieve a purity of 99.5% for plastic powders. The case of Guiyu Town in Guangdong shows that after adopting this equipment, the annual output value of local e-waste processing enterprises exceeded 3 billion yuan, and the lead content in rivers decreased by 76%. This "fully exploitative" type of recycling perfectly illustrates the profound meaning of "waste is just a resource in the wrong place". Technological innovation is the soul of this equipment. The equipment adopts the "vortex-centrifugal combined force field sorting" technology, which can accurately separate metal particles below 0.1 mm; the intelligent sensing system can adjust the water flow speed and pH in real time to ensure sorting accuracy; and the modular design allows the processing capacity to be flexibly adjusted between 1-10 tons per hour. More importantly, the research and development team combined traditional mining theory with fluid mechanics to develop the "pulsating water curtain sorting device", which has obtained 23 international patents. These breakthroughs not only fill the domestic void, but also make China's technical standards in this field a reference model for the International Electrotechnical Commission (IEC). The promotion of this equipment is reshaping the e-waste processing industry ecosystem. At the demonstration production line built in Changzhou, Jiangsu, an eight-equipment processing system can digest 20,000 tons of scrap circuit boards annually, equivalent to reducing 500,000 tons of ore mining. Its "decentralized recycling - centralized processing" model has driven the establishment of 136 e-waste recycling outlets across the country. This business model of equipment + service not only solves the pollution problem of small-scale processing, but also builds a nationwide renewable resource network. As academician Li Mingyuan of the Chinese Academy of Engineering put it: "The value of water-based recycling equipment lies not only in the technology itself, but also in its ability to build a complete value chain from recycling to reuse." From a broader perspective, this equipment represents the development direction of green manufacturing. It uses scientific power to transform linear economy into circular economy and turn environmental burden into industrial opportunity. Against the backdrop of the "carbon peaking and carbon neutrality" goal, this solution that protects the ecological environment and creates economic value is the best footnote to ecological civilization construction. When we watch the processed metal ingots flow back into the production line, we may understand more deeply that true sustainable development lies in these technological innovations that enable the continuous circulation of resources.