ArticleScientific reports2026
Circular economy: water quality assessment for irrigation purposes in a constructed-wetland scenario.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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7 authors.
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Abstract
Water is an essential natural resource that sustains life and ecosystems. However, the increasing pressure on freshwater reserves due to climate change, rapid population growth, and industrialization is exacerbating the issue of water scarcity. In this context, wastewater reuse has emerged as a vital strategy to address water shortage. Also, it supports the United Nations Sustainable Development Goals and aligns with the principles of the circular economy. In this context, phytoremediation appears to be a viable solution that employs plant species to purify water, thereby contributing to water reuse. So, this study focuses on evaluating the feasibility of using treated wastewater from a constructed wetland for irrigation purposes. The investigation involved establishing a comprehensive monitoring plan, including sampling and analytical processes, followed by in situ and laboratory analyses of the collected water samples. The results indicate that the treated wastewater met the quality standards set by National and European legislation for irrigation purposes. Some parameters, such as chemical oxygen demand, total suspended solids, and turbidity, demonstrate high removal efficiencies, with maximum removal efficiencies exceeding 97%. The anions and potentially toxic elements showed very low values, being within the standards for water reuse for irrigation, except ammonium (NH4+), which did not comply with the standards in any of the campaigns. The SAR, with a value of less than 2, was below the maximum recommended value (MRV) of 8. Overall, the findings support the use of treated wastewater from constructed wetlands for irrigation, which offers an effective solution for water reuse and contributes to environmental sustainability.
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