Article | REF: F1450 V1

Controlling water consumption and waste from the food industry

Author: Carole MATHIEU-ANDRÉ

Publication date: March 10, 2000

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7. Optimization of clean water circuits

Cooling water and boiler water are generally used at high flow rates. Water consumption can be reduced by adopting closed or semi-closed circuits, or by using reheated water at other manufacturing stations.

  • Adoption of closed or semi-closed cooling circuits

    The following key points must be observed.

    In closed circuits, the water is cooled by contact with a secondary fluid (air or water) and is then recycled without contact with air. In semi-closed circuits, on the other hand, the water is cooled by evaporation in an atmospheric cooler before being recycled.

    Water-cooled refrigeration compressors should be replaced by air-cooled compressors. Cooling systems can be upgraded with chillers, tubular or plate heat exchangers. In wineries, wastewater cooling should be eliminated,...

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