NDLI: Justification, Design, and Analysis of a Village-Scale Photovoltaic-Powered Electrodialysis Reversal System for Rural India

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Natasha, C. Wright Zande, Georgia Van De Amos, G. Winter
Copyright Year	2015
Abstract	This paper presents the merits of village-scale photovoltaic (PV) powered electrodialysis reversal (EDR) systems for rural India and the design and analysis of such a system built by the authors with planned testing to be completed in March 2015 in Alamogordo, New Mexico. The requirements for the system include daily water output of 6–15 m3/day (enough potable water for the average village size of 2,000–5,000 people), removal of dissolved salts in addition to biological contaminants, photovoltaic power source, recovery ratio of greater than 85% and appropriate maintenance and service scheme. At present, most village-scale desalination systems use reverse osmosis (RO), however the managing NGOs have found the systems to be cost prohibitive in off-grid locations. EDR has the potential to be more cost effective than currently installed village-scale RO systems in off-grid locations due to the lower specific energy consumption of EDR versus RO at high recovery ratios. This leads to lower power system cost and overall capital expense. The system developed in this study is designed to validate whether the system requirements can be met in terms of recovery ratio, product water quality, specific energy consumption, and expected capital cost. The system is designed to desalinate 3600 ppm brackish groundwater to 350 ppm at a rate of 1.6 m3/hour and a recovery of 92%. This paper reviews the scope of the market for village scale desalination, existing groundwater salinity levels, and presents the design methodology and resulting system parameters for a village-scale PV-EDR field trial.
Sponsorship	Design Engineering Division Computers and Information in Engineering Division
File Format	PDF
ISBN	9780791857076
DOI	10.1115/DETC2015-46521
Volume Number	Volume 2A: 41st Design Automation Conference
Conference Proceedings	ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Language	English
Publisher Date	2015-08-02
Publisher Place	Boston, Massachusetts, USA
Access Restriction	Subscribed
Subject Keyword	Design Water Energy consumption Groundwater Design methodology Power systems (machinery) Reverse osmosis Water pollution Maintenance Non-governmental organizations Testing
Content Type	Text
Resource Type	Article

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