2024

The Changzhou Waste Acid Resource Comprehensive Utilization Base operated by Yongbao Environmental focuses on the harmless disposal and resourceful utilization of waste acid and aluminum slag. The base has developed an energy-efficient, low-carbon, eco-friendly, and highly efficient process chain for treating and recycling waste acid and aluminum slag from over 10 industries including metal surface treatment and mechanical manufacturing. Currently, Yongbao Environmental is able to process 215,000 tonnes of waste acid and aluminum slag and convert them into approximately 220,000 tonnes of water treatment agents each year. The base holds an 80% market share in hazardous waste disposal and utilization in Changzhou and surrounding areas, serving over 2,000 customers. This initiative not only reduces environmental pollution from waste but also promotes the efficient recycling of resources.

Yongbao Environmental, a subsidiary of China Lesso, has made an innovative breakthrough in treating oil-containing waste by successfully developing anaerobic pyrolysis recovery technology. Compared to traditional incineration methods, this technology offers significant advantages, including lower energy consumption, cleaner combustion, zero dioxin emissions, heavy metal solidification, and safe utilization of pyrolyzed carbon residues. With an annual processing capacity of 70,000 tonnes of oil-containing waste, the system recovers 12,500 tonnes of raw oil for refining and reuse. This breakthrough promotes the harmless treatment, volume reduction, and efficient utilization of sludge while enabling resource recovery and energy self-sufficiency.