Assessment of groundwater quality for irrigation and drinking purposes and identification of hydrogeochemical mechanisms evolution in Northeastern, Tunisia
| Autor: | Mourad Bédir, Faten Houatmia, Rim Azouzi, Abdelkrim Charef |
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| Rok vydání: | 2016 |
| Předmět: |
Irrigation
Soil Science Aquifer 010501 environmental sciences 010502 geochemistry & geophysics 01 natural sciences chemistry.chemical_compound Environmental Chemistry 0105 earth and related environmental sciences Earth-Surface Processes Water Science and Technology Hydrology Global and Planetary Change geography geography.geographical_feature_category Environmental engineering Geology Contamination Pollution Salinity chemistry Siliciclastic Water quality Sodium carbonate Groundwater |
| Zdroj: | Environmental Earth Sciences. 75 |
| ISSN: | 1866-6299 1866-6280 |
| DOI: | 10.1007/s12665-016-5441-8 |
| Popis: | Oligocene and Mio-Plio-Quaternary siliciclastic deposits constitute the most important deep aquifers of the Kairouanai-Sahel region. Considering the over-exploitation and contamination of the surface groundwater, recourse to use deep groundwater was crucial. These aquifers revealed three major hydrochemical facies: HCO3/Mg, HCO3/Na and SO4/Mg water types. Rock–water interaction showed the main mechanisms are rock weathering and evaporation. Different parameters such as water quality index (WQI), sodium absorption ratio (SAR), percentage of sodium, residual sodium carbonate (RSC), magnesium hazard (MH) and permeability index (PI) were used to evaluate groundwater suitability for drinking and irrigation purposes. Results highlighted that groundwater is unsafe for irrigation based on PI, MH, RSC and salinity diagram. According to the WQI values, 10.25 % of the water samples had good water quality, 69.23 % were considered as poor water, 12.82 % were very poor water and 7.69 % were considered unsuitable for drinking purpose. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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