Assessment of typical natural processes and human activities’ impact on the quality of drinking water
2015
Kurilić, Sanja Mrazovac | Ulniković, Vladanka Presburger | Marić, Nenad | Vasiljević, Milenko
This paper provides insight into the quality of groundwater used for public water supply on the territory of Temerin municipality (Vojvodina, Serbia). The following parameters were measured: color, turbidity, pH, KMnO₄ consumption, total dissolved solids (TDS), EC, NH₄ ⁺, Cl⁻, NO₂ ⁻, NO₃ ⁻, Fe, Mn, As, Ca²⁺, Mg²⁺, SO₄ ²⁻, HCO₃ ⁻, K⁺, and Na⁺. The correlations and ratios among parameters that define the chemical composition were determined aiming to identify main processes that control the formation of the chemical composition of the analyzed waters. Groundwater from three analyzed sources is Na–HCO₃ type. Elevated organic matter content, ammonium ion content, and arsene content are characteristic for these waters. The importance of organic matter decay is assumed by positive correlation between organic matter content and TDS, and HCO₃ ⁻ content. There is no evidence that groundwater chemistry is determined by the depth of captured aquifer interval. The main natural processes that control the chemistry of all analyzed water are cation exchange and feldspar weathering. The dominant cause of As concentration in groundwater is the use of mineral fertilizers and of KMnO₄ in urban area. The concentration of As and KMnO₄ in the observed sources is inversely proportional to the distance from agricultural land and urban area. 2D model of distribution of As and KMnO₄ is done, and it is applicable in detecting sources of pollution. By using this model, we can quantify the impact of certain pollutants on unfavorable content of some parameters in groundwater.
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