Talking to reporters here on Monday, Chemplast Sanmar chairman N. Sankar said not even a drop of water would be let out, and Chemplast Sanmar would be the first chemical company in India to achieve zero discharge of effluents. It had invested Rs. 27 crore in Mettur and Rs 15 crore in Cuddalore. The operating cost would be Rs. 4 crore a year. The Karaikal facility had already implemented the scheme.
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