The industrial mine water produced by the Eshidiya phosphate mines posed discharge, safe storage, and reuse challenges. This study aimed to evaluate the hydrogeochemical characteristics of the mine water using physicochemical and biological analysis, the Piper model, the Durov model, and the saturation index model. Industrial mine water could be classified into three groups: the salinity type (SO₄²⁻–Cl⁻–HCO₃–NO₃⁻–Mg²⁺–K⁺), the carbonate flour apatite mineral (francolite) type (PO₄²⁻–Ca²⁺–Na⁺–F⁻), and the decompose organic type (DO, BOD, and COD). Two factors explained 73% of chemical variances: factor 1 (Mg²⁺, K⁺, HCO₃⁻, SO₄²⁻, Cl⁻, and NO₃⁻) and factor 2 (PO₄²⁻, Na⁺, Ca²⁺, and F⁻), which were regarded as indicative ions of the mineral–water interaction and the carbonate flour apatite mineral (francolite), respectively. The Na⁺–Cl⁻-type water (90%) was the dominant water type, which was followed by Ca⁺–Na⁺–HCO₃ (10%). The Durov model diagrams displayed three hydrochemical facies: Na⁺–Ca²⁺–Cl⁻ (80%), Na⁺–Cl⁻ (10%), and Ca⁺–Mg²⁺–HCO₃⁻ (10%). Most of the mine water was saturated with major minerals, such as francolite, calcite, dolomite, aragonite, and fluorite, which might result from the water–rock interaction in phosphate beneficiation process. The unsaturation state of evaporite minerals, such as halite, gypsum, and anhydrite, indicated a low contribution of mineral–water interaction.

Eshidiya 磷矿产生的工业矿井水对排放、安全储存和再利用提出了挑战。本研究旨在利用物理化学和生物分析、Piper 模型、Durov 模型和饱和指数模型评估矿井水的水文地球化学特征。工业矿井水可分为三类：盐度型（SO ₄ ^2- -Cl ^- -HCO ₃ -NO ₃ ^- -Mg ²⁺ -K ⁺），碳酸盐粉磷灰石矿物（法兰石）型（PO ₄ ^{2 -} -Ca ²⁺ -Na ⁺ -F ^-) 和分解有机类型（DO、BOD 和 COD）。两个因素解释了 73% 的化学变化：因素 1（Mg ²⁺、K ⁺、HCO ₃ ^-、SO ₄ ^2-、Cl ^-和 NO ₃ ^-）和因素 2（PO ₄ ^2-、Na ⁺、Ca ^{2 +}和 F ^-），它们分别被认为是矿泉水相互作用和碳酸盐粉磷灰石矿物（francolite）的指示离子。Na ⁺ -Cl ^-型水（90%）是主要的水型，其次是 Ca ⁺ -Na ⁺ -HCO₃ (10%)。Durov 模型图显示了三种水化学相：Na ⁺ -Ca ²⁺ -Cl ^- (80%)、Na ⁺ -Cl ^- (10%) 和 Ca ⁺ -Mg ²⁺ -HCO ₃ ^- (10%)。大部分矿井水被主要矿物饱和，如法兰石、方解石、白云石、文石和萤石，这可能是磷酸盐选矿过程中水岩相互作用的结果。蒸发岩矿物（如岩盐、石膏和硬石膏）的不饱和状态表明矿物-水相互作用的贡献较低。