Abstract Desalinated water reduces salt load and water needs in irrigation but lack hardness and sulfate ions required for optimal plant growth. Mixing with groundwater adds hardness but raises chloride and sodium levels limiting the amount of groundwater that can be used in the blend. Monovalent selective electrodialysis (SED) allows reducing chloride and sodium while preserving most of the hardness ions. This study examined under what conditions monovalent selective membranes are effective in treating groundwater for irrigation. All monovalent selective anion exchange membranes tested showed excellent selectivity for sulfate over chloride. Monovalent selective cation exchange membranes worked less well at the lower conductivities typical of brackish water, with only CSO membrane showing significant monovalent permselectivity (Pdm

中文翻译：

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使用单价选择性电渗析提质灌溉地下水

摘要 淡化水减少了灌溉中的盐负荷和水需求，但缺乏植物最佳生长所需的硬度和硫酸根离子。与地下水混合会增加硬度，但会增加氯化物和钠的含量，从而限制了可用于混合物的地下水量。单价选择性电渗析 (SED) 可以减少氯离子和钠离子，同时保留大部分硬度离子。这项研究检查了在什么条件下单价选择性膜可有效处理地下水以进行灌溉。测试的所有单价选择性阴离子交换膜都显示出对硫酸盐优于氯化物的选择性。单价选择性阳离子交换膜在典型的微咸水电导率较低的情况下效果较差，只有 CSO 膜显示出显着的单价渗透选择性 (Pdm