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Nalco Program Saves Water and Energy for Marriott Hotel in Mumbai

Nalco has helped the 583-room Marriott Renaissance Mumbai Convention Centre and Marriott Executive Apartments drastically reduce water use in its cooling systems which also resulted in less energy use and wastewater discharge from the facility.

Nalco 3D TRASAR® Technology for Cooling Water combines innovative chemistry with state-of-the-art monitoring and control hardware and software to optimize the 5-star hotel’s cooling system, allowing reuse of wastewater, cutting fresh water use by 16 million gallons per year. Improved cooling system performance – by preventing scale buildup, corrosion and microbiological fouling – also prolongs equipment life and conserves 600,000 kWh of energy, avoiding more than 400 tons of greenhouse gas emissions as well.

This success in Mumbai is an example of major program launched by Marriott with Nalco to deliver 450 million gallons in water savings over a three-year period by using Nalco monitoring equipment to optimize the water treatment in chillers and cooling towers in Marriott full-service hotels worldwide. The program is one of a number of steps being taken by Marriott to further reduce energy and water consumption by 25 percent per available room by 2017.

The Nalco 3D TRASAR system works proactively to prevent the forma¬tion of scale, corrosion, and equipment fouling or malfunction before it occurs. A fluorescent particle tagged to water treatment chemicals allows the system to continuous¬ly monitor and adjust chemical consumption for optimal use, reducing overall chemical use and preventing system fouling.

For more about the water and energy savings at the Marriott Renaissance Mumbai Convention Centre, visit