可溶性铝（Al3+）与周围的二氧化硅和阻垢剂成分反应形成 反渗透（RO）处理过程中的胶体污染物。硫酸铝（明矾）和 在不同的混凝剂剂量和进水pH值下，对聚合氯化铝（PACl）进行了评估 将铝总量降至50 ug/L以下的条件，之前观察到的水平会导致 反渗透膜污染。中试测试结果表明，PACl始终满足以下要求: 无论pH值（pH值6.0-8.3）如何，50 ug/L的铝都是目标，而明矾只能满足 pH值低于6的可溶性铝的目标。 5.对于总铝，明矾在pH 6.0-8.3下凝固 未能达到50 ug/L的目标，这可能会导致任何下游的胶体污染 膜使用优化明矾或PACl凝结水的反渗透进料进行进一步测试 需要确认的是，通过控制传统工艺可以减少膜污染 处理厂残余铝浓度。 包括24个参考文献、表格和图表。

Soluble aluminum (Al3+) reacts with both ambient silica and antiscalant components to form colloidal foulants during reverse osmosis (RO) treatment. Aluminum sulfate (alum) and polyaluminum chloride (PACl) were evaluated at various coagulant dose and influent water pH conditions to lower the total aluminum to below 50 ug/L, a level previously observed to cause RO membrane fouling. Results from pilot-scale testing demonstrated that PACl consistently met the 50 ug/L aluminum goal regardless of pH (pH 6.0-8.3), whereas alum could only meet the goal for soluble aluminum below pH 6.5. For total aluminum, alum coagulation at pH 6.0-8.3 failed to meet the 50 ug/L goal, which may result in colloidal fouling of any downstream membrane. Further testing using RO fed with optimized alum or PACl coagulated water are needed to confirm that reduced membrane fouling may result by controlling the conventional treatment plant residual aluminum concentration. Includes 24 references, table, figures.