Opportunities for Treatment and Reuse of Agricultural Drainage in the United States

Charifa Hejase, Katelin Weitzel, Sean Stokes, Brandi Grauberger, Robert Young, Miguel Arias-Paic, Minghao Kong, Soryong Chae, Todd Bandhauer, Tiezheng Tong, Daniel Herber, Sherry Stout, Ariel Miara, Zhe Huang, Anna Evans, Parthiv Kurup, Michael Talmadge, Alicen Kandt, Jennifer Stokes-Draut, Jordan MacknickThomas Borch, Dionysios Dionysiou

Research output: Contribution to journalArticlepeer-review

6 Scopus Citations

Abstract

Irrigation accounts for 42% of the total freshwater withdrawals in the United States. Climate change, the pressure of a growing population, degrading water quality, and increased competition from other sectors could constrain continuous supply to meet future agricultural water demand. This study presents an evaluation framework to assess the potential reuse of agricultural drainage water for crop irrigation. Using a regional approach, we review the current state of agricultural drainage treatment and reuse and the institutional, economic, and other barriers that can influence the reuse decision. In the 31 eastern states, agricultural drainage contains valuable nutrients that can be reused for irrigation with minimal treatment, while the 17 western states struggle with large volumes of saline drainage that can contain constituents of concern (e.g., selenium), preventing reuse without treatment. Using a new decision-support tool called WaterTAP3, a potential treatment train for saline agricultural drainage was analyzed to identify treatment challenges, research needs, and the potential implementation at a larger scale. As demonstrated by our case study, desalination of agricultural drainage is costly and energy intensive and will require sizable investments to fully develop and optimize technologies as well as manage the generated waste and brine.

Original languageAmerican English
Pages (from-to)292-305
Number of pages14
JournalACS ES and T Engineering
Volume2
Issue number3
DOIs
StatePublished - 2022

Bibliographical note

Publisher Copyright:
© 2021 The Authors. Published by American Chemical Society.

NREL Publication Number

  • NREL/JA-5R00-80604

Keywords

  • Advanced Treatment
  • Agricultural Drainage
  • Irrigation
  • Water Reuse
  • WaterTAP3

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