January 2007 - When concentrating large waste water flows by means of thermal separation, specific combinations of different technologies can result in considerable energy savings and the efficiency of the complete plant can be improved to a large extent. One milestone is the combination of an evaporation plant and a mechanical vapour recompressor.
In an evaporation plant in the starch industry with a capacity of 150 to/h, GEA Wiegand succeeded in reducing the energy consumption after cleaning to 5.8 kWh per ton of evaporated water. This value is unique: according to indications of renowned competitors, this value usually ranges between 10 and 20 kWh per ton of evaporated water. This top performance was achieved thanks to the sophisticated process engineering, the product know-how and the long-standing experience of the GEA Wiegand project manager.