本研究的目的是确定MIEX®工艺的操作条件，以便 实现以下模拟分布（SDS）消毒副产物（DBP）目标:60µg/L 总三卤甲烷（TTHMs）和45微克/升卤乙酸（共五种，HAA5）。 溴化物和天然有机物（NOM）被列为DBP的主要前体 去除在Palmdale测试的溴和总有机碳（TOC）浓度 加利福尼亚州水区水处理厂（PWTP）的平均浓度为190微克/升，平均浓度为4微克/升。 0毫克/升， 分别地接触时间对TOC或溴化物去除性能没有影响 对所考虑的树脂浓度（20至30毫升/升）进行范围测试（7.5至25分钟）。 相反，提高再生率（RR）可以改善工艺性能，尤其是 溴化物去除。在254 nm（UV-254）处，TOC和UV吸光度的去除增加 在测试的等效新鲜树脂剂量（EFRD）范围内（即0.9至6）约8% 而随着投入的增加，溴的去除率不断增加，从5%增加到40% 新鲜树脂。当EFRD从1.6增加到2.9时，硫酸盐去除率急剧增加 mL/L，之后其去除率稳定在80%。硫酸盐与同一离子竞争 交换溴化物和有机物的位置，以及它的存在可能对环境造成损害 删除这些参数。 通过使用MIEX®树脂以5%的速率进行处理，实现了HAA5的去除目标 RR和7.5分钟的联系时间。TTHM的目标只有通过MIEX®治疗才能实现 （树脂浓度为25 mL/L），然后使用以下RR组合进行凝固 三氯化铁剂量:5%RR和50 mg/L三氯化铁；15%RR和28 mg/L 三氯化铁。包括6个参考文献、表格、图表。

The objective of this study was to identify operation conditions for the MIEX® process to achieve the following simulated distribution (SDS) disinfection byproducts (DBP) goals: 60 µg/L of total trihalomethanes (TTHMs) and 45 µg/L of haloacetic acids (total of five species, HAA5). Bromide and natural organic matter (NOM) were targeted as the major DBP precursors to remove. Concentrations of bromide and total organic carbon (TOC) tested at the Palmdale Water District Water Treatment Plant, California (PWTP) averaged 190 µg/L and 4.0 mg/L, respectively. Contact time had no impact on TOC or bromide removal performance within the range tested (7.5 to 25 minutes) for the resin concentrations considered (20 to 30 ml/L). Conversely, increasing regeneration rate (RR) improved process performance, specially bromide removal. TOC and UV absorbance at 254 nm (UV-254) removal increased approximately 8 percent over the tested equivalent fresh resin dose (EFRD) range (i.e., 0,9 to 6 mL/L), while bromide removal consistently increased, from 5 to 40 percent, with increasing input of fresh resin. Sulfate removal increased sharply when EFRD was increased from 1.6 to 2.9 mL/L, after which its removal stabilized at 80 percent. Sulfate competes for the same ion exchange sites that bromide and organic matter, and its presence may have been a detriment to the removal of these parameters. The removal goal for HAA5 was achieved with treatment with MIEX® resin operated at a 5% RR and 7.5 minutes contact time. The TTHM goal was only reached with MIEX® treatment (resin concentration of 25 mL/L) followed by coagulation, using the following combination of RR and ferric chloride doses: 5% RR and 50 mg/L of ferric chloride; and, 15% RR and 28 mg/L of ferric chloride. Includes 6 references, tables, figures.