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Village-Scale Electrodialysis Desalination: Field Trial Validation

Author(s)
Wright, Natasha Catherine; Winter, Amos G.
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Abstract
This paper presents the design and initial testing of a villagescale photovoltaic (PV) powered electrodialysis reversal (EDR) desalination system for rural India. The system was built by the authors and tested at the Brackish Groundwater National Desalination Research Facility in New Mexico. EDR has the potential to be more cost effective than currently installed village-scale reverse osmosis (RO) systems in offgrid locations due to the lower specific energy consumption of EDR versus RO at high recovery ratios. Lower energetic demand leads to lower solar power system costs for off-grid areas. The system tested in this study is designed to validate that energetic, product water quality, and water recovery requirements can be met. An analytical model of the system that accounts for the composition of natural groundwater is presented and compared to initial experimental results. Additionally, results from the USAID Desal Prize are presented showing the system's performance in regards to recovery ratio and product water quality. This paper presents the design methodology, resulting system parameters, and experimental results for an initial village-scale PV-EDR field trial.
Date issued
2017-08
URI
http://hdl.handle.net/1721.1/120852
Department
MIT-SUTD Collaboration; Massachusetts Institute of Technology. Department of Mechanical Engineering
Journal
Volume 2B: 43rd Design Automation Conference
Publisher
ASME International
Citation
Wright, Natasha C., and Amos G. Winter. “Village-Scale Electrodialysis Desalination: Field Trial Validation.” Volume 2B: 43rd Design Automation Conference (August 6, 2017).
Version: Final published version
ISBN
978-0-7918-5813-4

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