Groundwater Pollution in Enjela Area- Southern Janzour City
The goal of this study is to investigate groundwater contamination from sewage
disposal lake in Enjela area. In the study, twenty nine wells are assigned in seven
sectors surrounding the sewage disposal area. The wells cover around 77 square
kilometres. During this study, field and laboratory measurements are conducted. The
field measurements include determining the location of wells related to the lagoon and
the water depth related to mean sea level. The laboratory measurements include
chemical and biological analyses for samples collected from the wells and sewage
lagoon. Chemical analyses include determination of pH, EC, TDS, K+
, Na+
, Ca2+, Mg2+
,
NO3
ˉ
, PO4
3-
, HCO3ˉ, and Clˉ. The indicators of biological contamination included
coliform bacteria, COD, and BOD. According to the conducted analyses and
measurements, the following results can be summarized. The study area is distinguished
by the natural groundwater movement in the northeast direction. Concerning the
chemical pollution, most of the wells are contaminated by potassium especially in the
vicinity of sewage lagoon. For biological contamination, the wells are highly
contaminated except those are far from lagoon. Due to its location and according to
Simpson ratio, the groundwater in the study area is affected by seawater intrusion.
Finally, based on this study, some recommendations are listed that might minimize the
effect of this pollution if they are implemented.
Keywords: Groundwater, aquifer, sewage water, chemical contamination, biological
contamination
Ahmed Ibrahim Ekhmaj, Ahmed Abolaid Ganfoud, Nuri Masoud. Elshebani, , (1-2021)