Impact des eaux usées déversées dans la Sebkha sur la qualité des eaux souterraines du bassin El-mahmel Khenchela
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Date
2022
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Université Abbes Laghrour -Khenchela-
Abstract
Abstract
This study is part of research on groundwater pollution by anthropogenic discharges and on the other
hand by the migration of the salty bevel from the Sebkha in response to intensive pumping. The
physical-chemical characterization of the waters by field and laboratory measurements makes it
possible to define the degree of saline contamination of the waters as well as its spatial extent. 05
groundwater samples and 01 sebkha sample were taken to analyse the water quality variables, chemical
analysis tools, types of diagrams were used to assess the water quality for the purposes of irrigation,The
results obtained show that the high mineralization of groundwater is essentially linked to the geological
nature of the surrounding land. The different physical-chemical parameters is not acceptable for most
samples. On the other hand the bacteriological study showed contamination by total coliforms :
(07 germs / 100ml) and (10 germs / 100ml) and (1100 germs / 100ml) also Escherichia coli (7 germs
/100ml) and (7 germs / 100ml) and (28 germs/100ml) Finally, we can conclude that the groundwater in
the Sebkha area is very polluted. This pollution weakens this ecosystem and gradually degrades it
despite its status as a unique wetland in the region.