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Lagune de Nador

Lagune de Nador

Zahra ZERROUQI

119,51 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Biologia, ciencias de la vida
ISBN:
9786209090370
119,51 €
IVA incluido
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Sobre IBD

La lagune de Nador, écosystème vital du Maroc oriental, subit une pression anthropique croissante. Cette étude évalue le fonctionnement des stations d’épuration (STEP) de Nador et Béni Ensar, et son impact sur la lagune.Les résultats révèlent des performances médiocres : la STEP de Nador présente une épuration insuffisante (DBO5, DCO, MES au-dessus des normes), tandis que celle de Béni Ensar est souvent hors service. Le lessivage des boues stockées génère des lixiviats riches en nutriments et métaux lourds, menaçant les eaux souterraines et lagunaires. Par ailleurs, l’évaluation de la pollution lagunaire identifie des zones critiques : concentrations en azote près du rejet de la STEP de Nador, et en phosphore près de Béni Ensar. Les sédiments montrent une contamination en métaux lourds (Pb, Cu, Zn, Cd).L’étude recommande la réhabilitation urgente des STEP, la valorisation systématique des boues, et le renforcement du suivi environnemental pour préserver cet écosystème vulnérable.

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