Let e-waste be "reborn through water" — the green mission of the complete set of equipment for water-based recycling of waste circuit boards

#Industry ·2025-11-28

As smartphones, computers, and other electronic devices are being replaced at an increasingly rapid pace, waste circuit boards have become both "valuable" and "dangerous" in urban waste. They contain precious metals such as gold and silver, but also toxic substances like lead and mercury. If not handled properly, they can cause irreversible pollution to soil and water. The emergence of water-based recycling equipment for waste circuit boards is like a "green key" that unlocks a new path for turning e-waste into a valuable resource. The core logic of this equipment lies in achieving precise resource separation in the most environmentally friendly way. First, the waste circuit boards are crushed into millimeter-sized particles by a shredding system and then graded by size using a screening device. Next, they enter the critical water-based separation unit - taking advantage of the significant density difference between metals and non-metallic materials, under the combined effects of water flow, buoyancy, and eddy currents, the heavy metal particles quickly sink to the metal trough due to their high density, while non-metallic components such as resin and fiberglass float to the non-metallic collection area. The entire process uses water as a medium, without the toxic fumes generated by incineration or the chemical pollution caused by acid leaching, truly achieving "clean recycling". Compared with traditional processing methods, the water-based separation equipment offers three-dimensional upgrades: First, it excels in environmental protection: the water medium is recycled with minimal replenishment, avoiding secondary pollution. Second, it boasts high recycling efficiency: the metal recovery rate can reach over 95%, with the purity of extracted gold and silver approaching industrial standards, far exceeding the average grade of natural mineral deposits. Third, it achieves full resource utilization: the separated non-metallic powder can be used to make eco-friendly bricks and insulation materials, realizing "complete utilization of resources". More notably, this equipment has achieved full automation control - from material feeding to discharge, it can be completed with a single click, with a daily processing capacity of up to dozens of tons, significantly reducing labor costs and operational risks. In the workshop of an electronics recycling enterprise in the Pearl River Delta, the value of this equipment is fully demonstrated. In the past, the enterprise used manual disassembly and acid leaching, which was not only inefficient but also led to complaints from nearby residents about pungent acid fumes. After introducing the water-based separation equipment, the workshop became clean and bright, with the daily processing capacity jumping from 5 tons to 20 tons and the metal recovery rate increasing by 12%. Every year, it reduces nearly 300 tons of hazardous waste emissions. More surprisingly, the non-metallic waste materials separated are used to make eco-friendly bricks, with annual sales exceeding 5 million yuan, achieving a win-win situation of environmental and economic benefits. From a macro perspective, this equipment is an important engine for promoting the circular economy. Every year, China produces tens of millions of tons of electronic waste, with the gold content in circuit boards reaching about 300 grams per ton, far exceeding the average grade of gold mines (about 3 grams per ton). If water-based recycling technology is widely adopted across the country, millions of tons of primary mineral resources could be saved annually, reducing carbon emissions by hundreds of thousands of tons, contributing to the achievement of the "carbon peaking and carbon neutrality" goals. It not only transforms the "extensive" pattern of the electronics recycling industry, but also leads the new trend of "resource recycling". The water-based recycling equipment for waste circuit boards is the crystallization of technological innovation and environmental responsibility. It ensures that electronic waste no longer becomes an "urban scar", but a "gold mine" for the circular economy. In the future, with the integration of technologies such as AI intelligent sorting and low-energy water systems, this equipment will become smarter and more efficient, injecting continuous momentum into the construction of a resource-saving society. Every circuit board "baptized" by it tells the same story: technology can give new life to waste and make the earth greener. 

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