Caractérisation physico-chimiques des eaux du massif de CHelia-Aurés-Khenchela
No Thumbnail Available
Date
2020
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abbes Laghrour University- Khenchela
Abstract
Water quality in the Taghrist region, located in northeastern Algeria, on the northern slopes of
the Aurès massif, has suffered a serious deterioration in recent years due to uncontrolled
discharge of urban wastewater, the intensive use of chemical fertilizers in agriculture and
overexploitation. This study aims at analyzing the functioning of the Mio-Plio-Quaternary
aquifer, determining its current characteristics and understanding the mineralization processes
involved in its chemical quality.
Physico-chemical analyses were carried out on 34 water samples from the Mio-PlioQuaternary
surface
aquifer.
The
dominant
chemical
facies
is
of
the
bicarbonate
calcium
type.
The
electrical
conductivity
of
the
water
has
an
average
value
of
974.75µS.cm-1.
It
should
be
noted
that
borehole
P4 has
an
electrical
conductivity
of 3948 µS.cm-1.
The
descriptive
analysis
shows
that
the
salinity
of
the
water
is
highly
variable
from
one
place
to
another
and
increases
in the direction of water flow, influenced by water-rock interaction,
mineral dissolution and precipitation, base exchange and anthropic activity.
A vulnerability map to water pollution has been drawn up by the GOD method, The map
shows three zones of different degrees of vulnerability, A low vulnerability (29%) occupies
the center of the area at the bottom of the Dj mountains. Chelia and Dj. Dalaa and a high to
very high vulnerability extends from the northeast to the southwest of the plain and represents
71% of the region.