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Reuse of treated wastewater and non-potable groundwater in the manufacture of concrete: major challenge of environmental preservation

  • Materials and Sustainable Development
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Abstract

This work concerns the reuse of treated wastewater from Er-Rachidia wastewater treatment plant (WWTP) in the mixing of ordinary C20/25 concrete, to reduce the overexploitation of non-potable groundwater, avoid its discharge into watercourses and reduce the risk of environmental pollution due to its mineral and organic matter load. In this respect, three types of mixing water were used in this study: drinking water (DW), non-potable groundwater (GW), and treated wastewater (TW). The results recorded for each type of mixing water, in the fresh and hardened state of concretes, were compared with the requirements of the standards. The obtained results show that the treated wastewater does not have any adverse effect upon the quality of the concrete; it has shown an improvement of the mechanical strength from the first stage, a similar density, setting time, and porosity and a slight decrease of the workability compared with the control concrete. A one-way analysis of variance (ANOVA) of the mechanical performance of concrete at different cure times (7, 14, 28, and 90 days) has shown that there is no significant decrease in the mechanical performance of concretes based on TW and GW compared with concretes formulated with DW. Through this study, the substitution of drinking water by treated TW and GW will help to minimize the footprint of construction materials on natural resources. From a point of view of the mechanical performance, TW and GW improve the mechanical performance of concrete. Additionally, it makes wastewater treatment plants more economically attractive and contributes to sustainable development.

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The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request

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Acknowledgements

The authors gratefully acknowledge the financial support of the Ministry of Environment. We also thank Engineering Laboratory of Organometallic, Molecular Materials, and Environment, Faculty of Sciences Dhar El Mahraz, Sidi Mohamed Ben Abdellah University for supporting this project. Thanks also to any structure that contributed to the realization of this work thanks to their feedback and testimonies.

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Authors and Affiliations

Authors

Contributions

F.Z. Bouaich: Writing—Original draft, Investigation, Formal analysis, Data curation; W. Maherzi: Writing—Revision and editing, Formal analysis; F. El-hajjaji: Validation, Visualization, Revision and editing; N. Abriak: Conceptualization, Visualization; M. Benzerzour: Formal analysis, Visualization; T. Mustapha: Conceptualization, Supervision, Visualization; Z. Rais: Methodology, Writing—Revision and editing, Conceptualization, Supervision, Visualization.

Corresponding author

Correspondence to Fatima Zahra Bouaich.

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The authors declare that they have no conflict of interest.

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All procedures performed were in accordance with the ethical standards of the institutional and national research committee

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Responsible Editor: Philippe Garrigues

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Bouaich, F.Z., Maherzi, W., El-hajjaji, F. et al. Reuse of treated wastewater and non-potable groundwater in the manufacture of concrete: major challenge of environmental preservation. Environ Sci Pollut Res 29, 146–157 (2022). https://doi.org/10.1007/s11356-021-15561-3

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  • DOI: https://doi.org/10.1007/s11356-021-15561-3

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