First study of the effect of wastewater treatment on microbial biodiversity at three wastewater treatment plants in Agadir, Morocco, using 16S rRNA sequencing

Wastewater treatment is a crucial step in preserving public health and the environment. The quality of treated wastewater depends on the efficiency of the treatment system, which necessitates the evaluation of effluent quality. This is the first study to evaluate the efficiency of three treatment pr...

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Bibliographic Details
Published in:Environmental pollution (1987) 2023-11, Vol.337, p.122528-122528, Article 122528
Main Authors: Wardi, Maryem, Slimani, Noureddine, Alla, Aicha Ait, Belmouden, Ahmed
Format: Article
Language:English
Subjects:
16S
Microbiome
Morocco
NGS
Public health
Wastewater treatment plant
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Summary:Wastewater treatment is a crucial step in preserving public health and the environment. The quality of treated wastewater depends on the efficiency of the treatment system, which necessitates the evaluation of effluent quality. This is the first study to evaluate the efficiency of three treatment processes used to treat wastewater in Agadir, Morocco. Microbial biodiversity was characterized at the inlet and outlet of three treatment plants based on sequencing of seven hypervariable regions of the 16 S rRNA gene. Based on the relative abundance of bacterial biodiversity between the inflow and effluent of AOURIR and ANZA WWTPs, activated sludge emerges as the more efficacious treatment in comparison to lamellar decantation. These two treatments reduced the relative abundances and even eliminated several bacteria, including pathogenic bacteria. However, the primary M’ZAR treatment increased bacterial biodiversity from the influent to the effluent, which requires secondary and tertiary treatments to eliminate pathogenic bacteria and prevent environmental pollution. This study demonstrates the importance of assessing effluent quality to protect public health and the health of systems that receive effluents. [Display omitted] •Quality of wastewater treatment in Agadir, Morocco.•Bacterial communities at the inlet and outlet of three wastewater treatment plants•Activated sludge is the most effective treatment used followed by lamellar decantation.•The need for continuous monitoring of potential pathogens at wastewater treatment plants
ISSN:0269-7491
1873-6424
DOI:10.1016/j.envpol.2023.122528