Faecal contamination of water in the Lake Mellah and its catchment area, north-eastern Algeria

• Autorzy: Kherifi Wahida , Hecini Lynda , Bekiri Fedia , Kherici-Bousnoubra Houria

Identyfikatory

DOI

10.2478/jwld-2019-0051

Warianty tytułu

PL

Zanieczyszczenia pochodzenia kałowego w wodach jeziora Mellah i jego zlewni, północnowschodnia Algieria

• Języki publikacji: EN

Abstrakty

EN

Lake Mellah close to the Mediterranean Sea in north-eastern Algeria belongs to valuable ornithological sites with numerous, often migratory, birds. To achieve the research goal, seventeen (17) sampling points were sampled based on the urbanization of the watershed. Water samples were taken at different wadis levels (upstream and downstream of settlements), as well as at the wastewater treatment plant and in Lake Mellah based on four measurement campaigns conducted at one frequency seasonal (high water, low water) during the year (2011/2012). Biological parameters (coliform faecal bacteria, streptococci) were analysed in water of the lake and its affluents in the laboratory of the Department of Health and Population, El Taref by the most probable number (MPN) technique of the Mac Grady table taken from various points. Obtained results were processed by the use of Bourgeois ratio (coliform faecal bacteria: streptococci) to indicate the origin of faecal contamination of waters and to establish maps of the spatio-temporal evolution of this ratio by the software Surfer 9. This way we obtained information of contamination of human origin during the dry season coming from domestic waste waters. In winter the ratio showed animal prevalence of contamination coming primarily from Animal Park in El Kala.

PL

Jezioro Mellah, położone blisko Morza Śródziemnego, w północnowschodniej Algierii, zalicza się do cennych siedlisk ornitologicznych ze względu na liczne, często migrujące, ptaki. Aby osiągnąć cel badań, pobierano próbki z siedemnastu punktów usytuowanych na terenach zurbanizowanych na obszarze zlewni. Próbki wody pobierano z różnych odcinków cieków (górne i dolne), jak też przy oczyszczalni ścieków i z jeziora Mellah w trakcie czterech sesji pomiarowych. W próbkach wody z różnych stanowisk w jeziorze i jego dopływach w laboratorium Katedry Zdrowia i Ludności, w El Taref analizowano parametry biologiczne (bakterie grupy coli i streptokoki) poprzez określenie najbardziej prawdopodobnej liczby (NPL) drobnoustrojów z wykorzystaniem tabel McGrady’ego. Przetwarzano uzyskane wyniki celem ustalenia źródła zanieczyszczeń kałowych w wodach i określenia przestrzennej i czasowej zmienności tego stosunku. Wykorzystano do tego stosunek Bourgeois. W ten sposób uzyskano informacje o zanieczyszczeniach pochodzących w porze suchej ze ścieków bytowych. Zimą zanieczyszczenia pochodziły głównie od zwierząt z parku w El Kala.

Słowa kluczowe

EN

affluents; biological parameters; Bourgeois ratio; faecal contamination; Lake Mellah; waste waters

PL

dopływy; jezioro Mellah; parametry biologiczne; stosunek Bourgeois; ścieki; zanieczyszczenia pochodzenia kałowego

• Wydawca: Wydawnictwo ITP
• Czasopismo: Journal of Water and Land Development
• Rocznik: 2019
• Tom: no. 42
• Strony: 110--116
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Kherifi Wahida

• Scientific and Technical Research Centre on Arid Regions, Campus of Mohamed Khider University, 7000 Biskra, Algeria; Badji-Mokhtar University, Laboratory Soil and Hydraulic, Annaba, Algeria

autor

Hecini Lynda

• Scientific and Technical Research Centre on Arid Regions, Biskra, Algeria

autor

Bekiri Fedia

• Scientific and Technical Research Centre on Arid Regions, Biskra, Algeria

autor

Kherici-Bousnoubra Houria

• Badji-Mokhtar University, Laboratory Soil and Hydraulic, Annaba, Algeria

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).