## Sizing Of Electrodialysis Units

The following equations approximate the inorganic salt removal capacity and the power consumption of electro-dialysis units:

where:

= Energy consumption, kWh lb-equivalent weight = Membrane area, ft2 = Current density, amps per ft2 = Total number of cell pairs = Membrane resistance of one cell pair, ohm-ft2 R = Solution resistance, ohm-ft2

= Current efficiency, a fraction Tp = Plant capacity, lb equivalent per hr

where:

= Energy consumption, kWh lb-equivalent weight = Membrane area, ft2 = Current density, amps per ft2 = Total number of cell pairs = Membrane resistance of one cell pair, ohm-ft2 R = Solution resistance, ohm-ft2

= Current efficiency, a fraction Tp = Plant capacity, lb equivalent per hr

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