67 Baseline At Unit 3, water jet ejectors used for vacuum distillation operation were observed to be underperforming. An investigation led to the following observations: • VOC emissions from exhaust of vacuum pump. • Odor nuisance at jet ejectors area, cooling tower area, and nearby premises. • High Chemical Oxygen Demand (COD) in effluent • Continuous seal leaks noticed at Jet ejectors pumps, and freshwater makeup needed to be regularly done. • High power consumption of gland pumps and less solvent recovery. Actions taken • Replaced water jet ejectors with more efficient oil lubricated vacuum pumps to achieve maximum efficiency. • Provision of Chiller circulation lines to the vacuum pump condenser for effective condensing of the TVOC. • Vacuum pump vent is connected to condenser and vent extended to safer location. • Vacuum controller with adjustable control setup. • Separate receiver provision for collecting solvent from vacuum pumps and condenser. Impact • Reduction of Volatile Organic Compounds (VOCs) escape into atmosphere. • 8% improvement in solvent recovery. • No odor accumulation at the Vacuum pumps area and cooling tower. Reduction of Volatile Organic Compound(VOC) Emissions and Increasing Solvent Recovery As part of our efforts to reduce environmental pollution and increase the natural vegetation, we have developed a green cover in and around our facility. The Green cover project aims to increase the green canopy at our site and mitigate pollution and its impact. Active participation from employees has led to approximately 2150 plantations in and around our facilities - Units 2,3 & 4, thus benefiting the community. The plantation includes both the native species and garden species. Another example of our commitment to protect the environment is the elimination of plastic bottles across our facilities. Today all plastic bottles used for drinking across all locations have been replaced by glass bottles. Protecting and restoring our ecosystem No more plastic, let’s switch to glass bottles for drinking water at Sai Life Sciences
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