61 Our facilities comply with all local and national regulations related to effluent discharge. All process wastewater and sewage generated across our facilities are treated in-house or sent to an external treatment facility. We rely on a Zero Liquid Discharge System, an important strategy to manage and recycle treated wastewater safely. We conduct systematic checks and inspections to verify the stability of our equipment and take preventive actions to proactively tackle leakages or spills. Waste water management Water reuse at Unit 4, Bidar – RO permeate for Cooling Tower and Chemical Dosing in ZLDS Baseline Unit4: Cooling towers make up water contributes to ~35%, and chemical dosing contributes to ~3% of total freshwater consumption per day. With reduced groundwater levels due to increasing demand, an action was needed to manage water consumption and increase water recycling. Actions taken • Process optimization in RO treatment • Optimization of biological treatment plant • Efficient Pre-treatment of RO feed water • Periodic health monitoring of membranes Impact • 40-45 KLD of recycled water (RO permeate) instead of freshwater available for use • 19% of total water requirement at site met through RO Permeate
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