This presentation describes the efforts undertaken by Sterlite Industries India Limited, Silvaasa at water conservation and management. Sterlite, a subsidiary of the London-listed metals and mining major Vedanta Resources Group is a leading producer of electrolytic grade copper in India.
Their water conservation documentation is particularly interesting because it provides a lot of specific details of savings brought about by individual process modifications and presents results in terms of both physical and financial savings.
Initiatives include:
- Modification in the thermosyphon cooling water arrangement,
- Condensate recovery of RVD for filter press backwashing
- Process modification in the leaching section to reduce steam consumption
- Modification of nozzles in ASWM for better drying & reduction in water consumption
- Reuse of collected condensate water generated by anode casting cooled water
- Rainwater harvesting
- Conversion of gland packing pumps into mechanical seal
- Provision of electrolytic cell covers in the refinery and the use of a lube cooled heat exchanger for compressors with recirculation.
An interesting statistic that highlights the good business sense of these measures is that for a total of Rs.1.55 million spent on them, no less than Rs. 1.15 million, or in other words nearly 75% of the investment is recovered in the form of savings.
Download the presentation from below for more details:
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