The industrial services area of the D'Onofrio plant of Nestlé proposed a project to use water from an osmosis plant to supply the cooling system for ten evaporative condensers, which previously used water from well. In the cooling process, the water evaporates and the contained salts are concentrated. The water acquires hardness, which, when reaching certain level, forms a lime film that prevents the optimum operation of the condensers. Water loses its quality and is poured into the drainage system; in its replacement a new volume of well water enters. The osmotized process provides better quality of water, it means water with lower hardness than the well water. With the osmotized water used in the condensers, it is possible to achieve greater cycles of water in the cooling process. With this project the period of use of the water is prolonged, avoiding its continuous discharge to the drainage. Principal activities: installation of 70 meters of pipes, connection from osmosis plant to condensers, monitoring of water consumption (monthly).

Project Results

Reduction on water use 26,050 m3/year.