Sludge Drying Technologies and Economics

March 25, 2026

Sludge management remains a critical challenge in India, with many cities struggling to select the most suitable sludge drying technologies. This report provides a comprehensive assessment of both nature-based and electro-mechanical sludge drying solutions, examining their efficiency, economic feasibility, and operational challenges.

Through case studies across multiple states, it presents a comparative analysis of various drying methods - including unplanted and planted drying beds, belt dryers, screw press with solar drying and greenhouse solar dryers. By offering a matrix-driven decision framework, the report serves as a valuable resource for engineers, planners and decision makers, ensuring informed technology selection and promoting sustainable sludge management practices across the country.