Chennai Changes Construction Waste into New Resources

Chennai has processed an impressive 1 lakh tonnes of construction and demolition (C&D) waste within the past three months.

This initiative, spearheaded by the Greater Chennai Corporation (GCC), not only addresses the city’s mounting waste challenges but also introduces an eco-friendly alternative to traditional construction materials. At the heart of this transformation are the processing units located in Perungudi and Kodungaiyur. These facilities meticulously sort, crush, wash, and screen debris, producing sand, gravel, and stone in various sizes suitable for construction purposes. The Perungudi unit, currently handling 1,500 tonnes daily, is poised to scale up its operations to 5,000 tonnes, reflecting the city’s commitment to sustainable practices.

A senior official from GCC highlighted the environmental considerations integrated into the process. “To mitigate dust emissions, we’ve installed sprinklers at secondary collection centres. Furthermore, we’re transitioning to using treated water, ensuring our methods are both efficient and environmentally responsible.” The collaboration between GCC and a private firm, operating under a partnership model, has been pivotal. While GCC covers the processing fees, the private entity manages the investment and operational aspects. This synergy has resulted in the production of sand that’s 30% more affordable than its natural counterpart, making it a preferred choice for filling and landscaping projects.

A technical advisor from the partnering firm emphasized the broader impact of this initiative. “Our recycled sand is not only cost-effective but also promotes responsible waste management. Major corporations and airport contractors are increasingly adopting it, recognizing its quality and sustainability.” The water used in the processing plants undergoes recycling through a thickener tank, ensuring a closed-loop system that conserves resources and minimizes environmental impact. To facilitate this massive operation, 201 vehicles and 566 workers have been deployed across 15 zones in the city. Recognizing the importance of compliance, GCC has introduced stringent penalties for unauthorized waste dumping. Starting April 21, violators will face fines ranging from ₹3,000 to ₹25,000, depending on the severity of the offense. In the last quarter alone, 284 violators have collectively paid ₹14.2 lakh in penalties, underscoring the city’s zero-tolerance approach.

Chennai’s initiative serves as a model for other urban centers grappling with construction waste. By transforming debris into valuable resources, the city not only addresses its waste management challenges but also paves the way for a greener, more sustainable future.

Chennai Changes Construction Waste into New Resources