Context: Singapore-based Blue Planet Environmental Solutions is set to build the world's largest waste processing plant at Kodungaiyur in North Chennai, Tamil Nadu.
Relevance of the Topic: Prelims: Key facts about World’s Largest Waste Processing Plant in Chennai.

World’s Largest Waste Processing Plant
- The Kodungaiyur dumpyard has 66 lakh cubic meters of accumulated garbage, posing serious environmental and public health hazards.
- Blue Planet Environmental in collaboration with the Greater Chennai Corporation aims to remove the massive garbage through bio-mining, bringing major improvements to public health and the local environment.
- The project also includes efforts to convert agricultural waste, such as paddy stubble, into compressed biogas (CBG), in partnership with local farmers. This move will not only support clean energy production but also help to curb the practice of stubble burning.
- The Singapore-based firm works on a Zero-Residue Model.
Zero-Residue Model:
- Zero residue model ensures that no waste is left unprocessed or untreated, thereby achieving 100% scientific utilisation of all types of waste generated.
- Landfill materials are scientifically processed with zero ecological footprint. It focuses on recycling, bio-mining, RDF conversion, and composting.
- Blue Planet, treats waste as a resource and deploys technology to get the right value from the resource- organic, food, industrial, commercial and other waste.
- Refuse Derived Fuel (RDF) and Recovered Energy Fuel (REF) are supplied to cement plants, replacing 20 lakh tonnes of coal/fossil fuels.
