The Determination of a Cost Optimal Design for a Multiple Stage Continuous Electrodialysis Desalination Device for Use in Domestic Point of Use Water Purification
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Copyright © 2020 ASME. There is a large and growing demand for point of use (POU) water desalination in emerging economies, such as India, where there is a large reliance on brackish (saline) groundwater reservoirs to meet drinking needs. In this work we propose a design for a two-stage continuous ED system that addresses the requirements of the Indian market while providing a higher water recovery than existing POU reverse osmosis products. Optimization was applied to minimize capital cost while ensuring 90% recovery of the feed, 90% salt reduction, and 15 L/hr of desalinated water production. The optimized design had a capital cost of approximately US$ 106, which is below the retail price of current RO purifiers on the market. Therefore, two-stage continuous ED shows promise for being a costcompetitive but water-efficient alternative to POU RO in India.
Date issued
2020Department
Massachusetts Institute of Technology. Department of Mechanical EngineeringJournal
Proceedings of the ASME Design Engineering Technical Conference
Publisher
ASME International
Citation
Varner, Hannah M, Shah, Sahil R and Winter, Amos G. 2020. "The Determination of a Cost Optimal Design for a Multiple Stage Continuous Electrodialysis Desalination Device for Use in Domestic Point of Use Water Purification." Proceedings of the ASME Design Engineering Technical Conference, 11B-2020.
Version: Final published version