CHEMICAL CONSTITUENTS OF SOME WELLS WATER IN SINAI (EGYPT) AND THEIR SUITABILITY OF QUALITY TO DIFFERENT USE ACTIVITIES

Document Type : Research articles.

Authors

1 Oil Authority (Consultant in petroleum geology & Hydrogeology)

2 Soils, Water & Environment Res. Inst., ARC, Giza, Egypt.

Abstract

The study site of Wadi Sidri locates at west central Sinai, on the eastern
side of the Suez Gulf. Wadi Sidri is considered one of the most important
hydrographic basins in Sinai Peninsula because it receives, seasonally a
considerable amounts of rainfall, most of it flows in the form of floods
towards the Suez Gulf. Other amounts of these rainfalls are surface run off and
catchment or stored as groundwater in a lot of wells amongst the area of
study.
The present investigation aims at studing the chemical constituents of
groundwater of the wells in Wadi Sidri, and to evaluate their suitability for
irrigation or for other uses in different agriculture proposes; sharing in the
development of the area. Chemical analysis for 21 ground water samples were
collected from 21 selected wells from Sidri valley.
Data can be summarized as follow:
Relatively use of groundwater in different human activities depend upon the
general moderate values of pH, TDS, SAR, pHc and adj SAR and adj RNa.
Hydro-chemical parameters intended that the determination of the ion ratios
is important to distinguish between groundwater having pale salinity
characteristics and those mineralized resulting by evaporation processes. The
most important parameters are: (Na + K) / Cl, (SO4 / Cl), (Ca / Mg) and (Na /
K).
The hypothetical salts assemblages in groundwater result from the
combination between cations and anions. Groundwater of the studied wells
reflect the existence of two assemblages salts of; NaCl, MgCl2, MgSO4,
CaSO4 and Ca (HCO3)2 beside to NaCl, Na2SO4, CaSO4, MgSO4 and Ca
(HCO3)2.
Many heavy and trace elements (Fe, Mn, Zn, Cu, Pb and Cd) are present in
groundwater with low concentration (less than 0.lppm), but sometimes much
higher, particularly if the water has been in contact with mineralized rock or
ore bodies.

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