Zero Liquid Discharge Push Helps BSL Save Water and Costs
Bokaro: The Bokaro Steel Plant (BSL) has achieved a landmark success in water conservation and recycling, emerging as a model for sustainable resource management in the steel sector.
Driven by continuous, planned, and systematic efforts of its Water Management Department, BSL recorded a sharp decline in water consumption over the past year. Official data show that monthly water usage fell from 99.86 lakh cubic metres in December 2024 to 72.81 lakh cubic metres in December 2025, marking a significant 27% reduction. Even more notable is the 55% drop in the net cost of fresh water, achieved despite a rise in water tariffs during the same period.
The milestone was made possible through a series of phased interventions, including major upgrades to Zero Liquid Discharge (ZLD) systems, enhanced wastewater collection and treatment, and maximised internal reuse of water. Extensive replacement and rehabilitation of ageing pipelines helped curb leakages and uncontrolled losses, while large-scale desilting of reservoirs, clarifiers, and sludge compartments restored their carrying capacity.
BSL also strengthened process control to ensure reuse-quality water by closely monitoring pH levels, Total Suspended Solids (TSS), and sludge removal, supported by continuous monitoring systems and improved metering discipline.
These comprehensive measures have not only generated substantial financial savings but also reinforced BSL’s commitment to environmental responsibility, regulatory compliance, and sustainable development. The achievement marks a decisive step towards strengthening zero liquid discharge practices and reducing long-term dependence on freshwater resources.
