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Lagoon (or Lake) Maryout Main Basin is one of the lagoon's four sub-basins, polluted with organic and metals contaminants from untreated sewage and industrial effluents from Alexandria City. Since 1993, these effluents have become primary treated before discharging into this basin through two point sources; one source is at a new site, as a step in rehabilitating the lagoon. Surface sediment samples were collected 3 years later, from the Main Basin as well as from the other three basins of the lagoon to determine the level of nine priority metal pollutants as well as organic carbon (Org-C). The data reveal that the sediments of the Lagoon Main Basin, particularly that in vicinity of the new point source, became spoiled and remarkably enriched with all the studied contaminants. In addition, some of the studied metals are at levels comparable to those of the median effect-range of Long and Morgan recommended by the EPA. This means that either diversion or advanced treatment is necessary to eliminate these effluents.
restoration, polluted Lagoon Maryout, sediments, organic carbon and metals, Alexandria, Egypt
Professor, University of Alexandria Moharrem Bek, Alexandria,