Water, Vol. 17, Pages 3246: A Complete Mobile Treatment Chain to Produce Drinking Water from Sources Heavily Contaminated by Inorganic and Organic Compounds

Water doi: 10.3390/w17223246

Authors:
Jean-François Blais
Vincent Taillard
Geneviève Rioux
Justine Dionne
Richard Lévesque
Pejman Abolhosseini
Lan Huong Tran
Richard Martel

The provision of potable water for armed forces at their operational sites necessitates a robust treatment chain to ensure the production of safe drinking water from potentially contaminated local water sources. Relying on single-use water bottles is not considered an eco-friendly option and on-site production may exhibit limited efficiency depending on the water contamination. This study therefore aimed to define a mobile processing chain that could efficiently produce drinking water on-site while offering a multi-barrier level of protection. To evaluate the system, contaminated water was prepared from different water sources and then spiked with various inorganic contaminants (metals, anions: Cl−, F−, I−, NO2−, NO3−, SO42−, CN−), organic contaminants (e.g., pesticides, petroleum hydrocarbons, polycyclic aromatic hydrocarbons, chlorinated solvents), and energetic compound (perchlorate) at levels ranging from 5 to 50 times the standard water quality criteria. A specific treatment process was defined optimized and evaluated at flow rates reaching 500 L/h. This treatment chain includes the following: a sediment filter, a greensand filter, a cation exchange resin, an anion exchange resin, an activated carbon adsorption filter, ultrafiltration, a UV lamp, and a reverse osmosis (RO) unit. This treatment system successfully met all water quality criteria, providing a reliable and effective alternative to an RO-only treatment regime.

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Jean-François Blais www.mdpi.com