In this study, energy-efficient electrokinetic separation processes, such as electrodeionization, are developed for reuse of impaired water in agriculture. We focus on three major challenges in managing impaired water for reuse: (1) pH neutralization, (2) heavy metals removal, and (3) nutrient removal and recovery. We evaluate the performance of electrokinetic separations processes for water quality improvement. We also elucidate the chemistry and reaction kinetics of water purification by the processes. Finally, we consider the interconnectivity between water productivity and energy consumption and discuss the balance between energy efficiency and water throughput in the context of large-scale deployment of an impaired water reuse plant.

Development of energy-efficient electrokinetic separation for water reuse in agriculture

2019 Fall National Meeting

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