本研究评估了一种回收反渗透的非热工艺 （RO）科罗拉多河水脱盐（CRW）产生的浓缩物。 研究试图确定CRW中的矿物沉淀顺序 浓缩作为浓缩系数（CF）的函数，并评估 化学沉淀策略，以降低驱动 矿物沉淀。在CF 10以上，矿物沉淀物包括CaSO4， CaCO3、MgSO4、BaSO4、SrSO4和二氧化硅。降低pH值并添加 阻垢剂抑制了CF10以下的降水，但对温度没有影响 较高的CF值。降水研究表明，钙、钡和镁++ 浓度可分别降低96%、94%和62%， 分别地化学沉淀也会减少溶解的二氧化硅 94%；然而，降水动力学较慢。进一步的 在二次反渗透工艺中浓缩化学沉淀盐水 显示高达80%的盐水回收率（98%的总回收率） 可能是可行的。包括10个参考文献、表格和图表。

This study evaluated a non-thermal process for recovering reverse osmosis (RO) concentrate generated from desalting Colorado River water (CRW). Studies sought to determine the mineral precipitation sequence in CRW concentrate as a function of concentration factor (CF) and evaluate chemical precipitation strategies to lower the component ions that drive mineral precipitation. Above CF 10, mineral precipitates included CaSO4, CaCO3, MgSO4, BaSO4, SrSO4, and silica. Lowering pH and adding antiscalant suppressed precipitation below CF 10 but had no effect at higher CF values. Precipitation studies showed that Ca++, Ba++, and Mg++ concentration could be reduced by 96 percent, 94 percent, and 62 percent, respectively. Chemical precipitation also reduced dissolved silica by 94 percent; however, precipitation kinetics were slower. Further concentrating chemically precipitated brine in a secondary RO process showed that up to 80 percent brine recovery (98 percent total recovery) may be feasible. Includes 10 references, tables, figures.