Waste Heat for Desalination
Published on by Water Network Research, Official research team of The Water Network in Technology
Low-grade, Waste Heat Produced by Industry May Be Applicable to Distillation Desalination to Make Fresh Water Where ReverseOsmosis Is Not Suitable
The study found that by supplementing distillation-desalination with multi-stage flashing increased the overall efficiency of existing multi-effect distillation by 40-50%.
UWA School of Mechanical and Chemical Engineering's Professor Hui Tong Chua said the technology was designed to maximize the low-grade - below 100ºC - heat which is often considered to be waste.
Hui said the process was suitable for use with wastewater that was unsuitable for reverse osmosis: "For rejected process streams from refineries, and for high-saline, off pH, and/or high-silica content groundwater, the technology is most suitable" he said. "The technology is best suited to refineries, such as alumina refineries, where the conservation of steam is of paramount concern, and where the process fluid cannot use reverse osmosis technology," he says.
Source: Desalination
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Taxonomy
- Technology
- Desalination
- Reverse Osmosis