Water conservation initiatives (2007) at Carrier Aircon, Gurgaon, Haryana

This presentation describes the efforts made by Carrier Aircon, Gurgaon at water conservation. This paper and board manufacturer has brought about a reduction in specific water consumption from 173 cu m/MT of paper (2003-04) to 130 cu m/MT of paper (2006-07), while waste water discharge over the same period has come down from 169 cu m/MT to 103 cu m/MT.

Besides several technical modifications to equipment and operations, the use of an activated sludge process and the introduction of a tertiary clarifier in the treatment facility have also contributed to improved waste water management. Treated effluent is used for raw material wetting, coal ash quenching, ejector cooler operations, evaporator jet condensers, gland cooling, gardening and irrigation of crops.

Rainwater harvesting in the mill and the colony are both set to expand. A major business decision that has led to water conservation is the shifting of all operations that were earlier being carried out at Daman to the Gurgaon plant and thereby integrating operations in a single facility at Gurgaon. This alone has led to a savings of about 6,400 cu m per year.

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