Project Number # 1069
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Background and Relevance
Many communities are provided with drinking water by extractionof groundwater however these waters often contain excessive concentrations of redox-active elements such as iron and manganese which presipitate on exposure to air, trace contaminants such as arsenic and uranium which may induce chronic or acute toxic effects in the consumer and pathogenic organisms which may be deleterious to health.
Many of these communities rely on desalination via Electrodialysis Reversal (EDR) or Reverse Osmosis (RO) to remove ions such as nitrate, fluoride and arsenic and reduce the concentration of dissolved salts. Despite great efforts, many problems remain: inadequate removal of trace contaminants, fouling of membranes, poor reliability, elevated costs, etc.
The project compared the performance of EDR and RO, including reliability modelling for a 10 year period. CDI performance was investigated and showed potential as a low cost/low energy technique for removal of salt from brackis whater, especially if it can be teamed with a solar energy power supply.
Below is a listing of all publications and presentations from the project.