In a significant step toward sustainable development, a new wastewater treatment facility, costing 1.5 million yuan, has officially opened in Nanchuan, Chongqing. This advanced system is designed to treat coking wastewater using mineralized waste, marking another milestone in the Chongqing Bosai Mining Group's commitment to circular economy and clean production practices.
The journey began in 1994 when the Bossa Group invested in constructing the Yanziyan Aluminum Mine Plant in Nanchuan. Initially, the project focused on basic mineral extraction, but the process left behind massive amounts of slag, which were piled up and became a growing environmental concern. During heavy rains, contaminated water mixed with the slag, leading to severe pollution in the surrounding area. Over 300,000 tons of bauxite slag accumulated, posing a major challenge for the company.
To address this issue, the group conducted extensive research and made a strategic decision in 2001 to invest 250 million yuan in establishing Pioneer Alumina Co., Ltd., aiming to recycle the slag into alumina. The process required significant energy, prompting the company to collaborate with the Nanchuan Coking Plant. They further invested over 80 million yuan to set up Daxing Coal Chemical Company, which effectively utilized more than 10 million cubic meters of gas annually. This not only provided a stable energy supply for the alumina plant but also generated over 5 million yuan in annual profits.
Today, more than 200,000 tons of slag have been successfully reused, while the remaining 100,000 tons are now considered a valuable resource. However, the problem of toxic coking wastewater persisted, becoming a pressing issue that needed immediate attention.
Recognizing the global challenge of treating coking wastewater, Bossa Group partnered with Tongji University’s State Key Laboratory of Pollution Control and Resource Utilization Research, as well as Chongqing Institute of Technology’s College of Biological Engineering. Together, they launched a joint research initiative to develop an innovative treatment process for high-sulfur, high-nitrogen coking wastewater. This technology aims to achieve international standards in wastewater treatment.
As part of this collaboration, Bossa Group is currently constructing a wastewater treatment tank with a daily capacity of 20 tons. Once completed, this facility will enable the recycling of previously discharged wastewater from the coking plant, significantly reducing costs and environmental impact. The project represents a major leap forward in the company’s efforts to balance industrial growth with ecological responsibility.
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Wuan Jianfeng Casting Co., Ltd. , https://www.hbjfcasting.com