We are using discarded acid from furnace in pickling process to optimize acid utilization. Spent acid is one of the significant waste streams generated from Usha Martin Limited’s metal processing and surface treatment operations. As a corrosive and hazardous material, its management requires strict environmental controls and alignment with the Hazardous Waste Management Rules. Historically, disposal of spent acid posed operational, environmental, and compliance risks due to its volume and treatment complexity. In FY 2024–25, Usha Martin generated approximately 7,970 tonnes of spent acid. We adopted a structured process for the treatment and partial utilisation of spent acid.
