Initially when our wet processing facility was established and commissioned to operate, land discharge of treated water was permitted. It required vast area for discharge and resulted in large consumption of fresh water in the process, due to discharge. To lower this impact we reduced our process water consumption by process optimisation and technology upgradation. We initiated research and development of advanced treatment technology in 2001 ahead of ‘Zero Liquid Discharge’ regulations which were effected in Jan 2007. Our focus was to minimise solid waste generation, particularly secondary waste and to recycle water and salt. After numerous studies and pilot trials we implemented electro-chemical treatment in 2004 to the concentrated effluent stream. The technology was later extended to other streams. Ours is a ‘Zero Liquid Discharge’ (ZLD) facility since March 2006, which means no liquid from the process is discharged to environment. Only 2% of our process water is lost due to evaporation (98% is recycled). Currently studies are underway to reduce this loss further. The minimal sludge which is generated in our advanced treatment has been found to be feasible for co-processing in another industry and there by becoming a by product rather than a waste. We are also authorised by the TNPCB for sending our ETP sludge for the above said co-processing activity.