Abstract Process water collected from the iron ore beneficiation plant was treated by electrocoagulation (EC) process to make it suitable for reuse or safe for discharge. Experimental studies were carried out towards efficient removal of the various metal ions such as iron (Fe), chromium (Cr), copper (Cu), zinc (Zn), manganese (Mn), lead (Pb), aluminum (Al) from process water along with monitoring of total dissolved solids (TDS), turbidity, conductivity, salinity. The influence of various operating parameters of EC, such as electrode material, electrode configuration, current density, inter-electrode distance, and solution conductivity, were explored for effective treatment of process water. Experimental results showed that aluminum electrodes at monopolar mode with a current density of 68.50 A/m2, an inter-electrode distance of 1 cm, and solution conductivity of 1033 µS/cm were the ideal operating conditions to get treated water with a removal efficiency of 99.95%, 99.46%, 99.33%, 97.99%, 73.44% for Fe, Cr, Pb, Mn, and Cu ions respectively after 60 min of EC with electric energy consumption of 3.93 kWh/m3 and operating cost of 0.6115 US$/m3. X Ray Diffraction analysis of EC generated sludge confirmed the exclusion of major elements like Fe, Cr, Cu, Zn, Mn, Pb, Al as well as trace elements such as Nickel, Cobalt, Magnesium, Titanium, Vanadium, Zinc, Neodymium, Samarium, Yttrium, etc. from process water.

中文翻译：

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电絮凝法处理铁矿石选矿厂工艺水

摘要 从铁矿石选矿厂收集的工艺水经过电凝聚 (EC) 工艺处理，使其适合回用或安全排放。进行了实验研究，以有效去除各种金属离子，如铁 (Fe)、铬 (Cr)、铜 (Cu)、锌 (Zn)、锰 (Mn)、铅 (Pb)、铝 (Al)工艺用水以及总溶解固体 (TDS)、浊度、电导率、盐度的监测。探讨了电极材料、电极配置、电流密度、电极间距离和溶液电导率等 EC 各种操作参数对有效处理工艺水的影响。实验结果表明，铝电极在单极模式下，电流密度为 68.50 A/m2，电极间距为 1 cm，溶液电导率为 1033 µS/cm 是获得处理水的理想操作条件，对 Fe、Cr、Pb、Mn 和 Cu 离子的去除效率分别为 99.95%、99.46%、99.33%、97.99%、73.44%。 EC 60 分钟，电能消耗为3.93 kWh/m3，运行成本为0.6115 US$/m3。EC 产生的污泥的 X 射线衍射分析证实排除了主要元素如 Fe、Cr、Cu、Zn、Mn、Pb、Al 以及微量元素如镍、钴、镁、钛、钒、锌、钕、钐、钇等来自工艺用水。93 千瓦时/立方米，运营成本为 0.6115 美元/立方米。EC 产生的污泥的 X 射线衍射分析证实排除了主要元素如 Fe、Cr、Cu、Zn、Mn、Pb、Al 以及微量元素如镍、钴、镁、钛、钒、锌、钕、钐、钇等来自工艺用水。93 千瓦时/立方米，运营成本为 0.6115 美元/立方米。EC 产生的污泥的 X 射线衍射分析证实排除了主要元素如 Fe、Cr、Cu、Zn、Mn、Pb、Al 以及微量元素如镍、钴、镁、钛、钒、锌、钕、钐、钇等来自工艺用水。