本研究的目的是评估后滤器的时间行为 采用不同类型颗粒活性炭（GAC）介质的吸附器 去除氯化有机物的前体并形成消毒 副产品。实验装置是四个中试规模的吸附器，两个单元带有 矿物GAC介质（CALGON Filtrasorb 300）和另外两个含有植物 GAC媒体（CARBOMAFRA CAG 119）。四个吸附器（F1至F4）分别为 并联运行，空床接触时间（EBCT）约为20分钟。 其中两个（F1-CALGON和F2- CARBOMAFRA）用过滤水喂养 来自Alto da Boa Vista水处理厂（ABVWTP），该水处理厂在 观察臭氧氧化对不同吸附剂的影响。这个 另外两个吸附器（F3-CALGON和F4-CARBOMAFRA）加入过滤后的水 只有水。臭氧氧化系统由四个柱状接触器组成 系列每根柱子的水力停留时间为4分钟。臭氧剂量为 应用于本系列的第一列和第二列。臭氧的总剂量在规定范围内 范围为0.2至1.0 mg O₃/L，并在第1列和第2列之间平均分配。 通过以下方法对前体去除和消毒副产物形成进行评估: 分别测定COT、UV-254 nm和THM形成电位。这个 过滤水来自传统的ABV水处理厂，其原水来源于 高富营养化水库，滞留时间长。COT和UV-254值适用于 臭氧氧化系统给水和吸附剂F3和F4的范围在2.0到2.5之间 mg C/L和0.02至0.04 cm-1。有人观察到，臭氧氧化不起作用 显著影响COT和UV-254值。在邮寄的前30天内 过滤吸附器运行时，F1和F3的胶辊去除率约为80% （使用CALGON GAC培养基）和大约40%的F2和F4（使用CARBOMAFRA） 广汽传媒）。经过60天的运行，胶辊的去除效率降至40% %分别为20%和20%，并在八个月的手术中保持这种状态。这个 矿物GAC介质在COT和UV-254去除方面的表现优于 植物GAC培养基。另一方面，废水质量没有显著差异 观察到具有相同GAC介质类型的吸附器接收臭氧和非臭氧过滤水。因此，臭氧氧化似乎不会影响吸附介质。 关于THM的形成，吸附剂F1和F3表现出比其他吸附剂更好的性能 它们的对应物（F2和F4），与COT和U-254观察到的模式相同 移除。在吸附器运行的前30天内，THM还原效率 F1和F3约为85%，F2和F4约为50%。有八个月的假期 在运行中，使用吸附器时，这些数字分别稳定在50%和30%左右 类似于婴儿床移除时发生的行为。持续的，长期的 过滤后吸附器的运行将使我们能够评估微生物效应 与COT清除和THM形成电位有关。包括7个参考文献、表格、图表。

The objective of this study was to evaluate the temporal behavior of post filter adsorbers employing different types of granular activated carbon (GAC) media in the removal of precursors of chlorinated organics and in the formation of disinfection byproducts. The experimental setup was four pilot scale adsorbers, two units with mineral GAC media (CALGON Filtrasorb 300) and another two units with vegetal GAC media (CARBOMAFRA CAG 119). The four adsorbers (F1 through F4) were operated in parallel, with the same empty bed contact time (EBCT) of about 20 minutes. Two of them (F1-CALGON and F2-CARBOMAFRA) were fed with filtered water from a Alto da Boa Vista Water Treatment Plant (ABVWTP) which was ozonated prior to feeding, in order to observe any effects of ozonation on the different adsorbers. The other two adsorbers (F3-CALGON and F4-CARBOMAFRA) were fed with filtered water only. The ozonation system was composed of four column shaped contactors in series. Each column had a hydraulic detention time of 4 minutes. Ozone dosages were applied in the first and second columns of the series. The total ozone dosage was in the range 0.2 through 1.0 mg O₃/L and was equally split between columns 1 and 2. Evaluations of precursor removal and disinfection byproduct formation were by means of COT, UV-254 nm determinations and THM formation potential, respectively. The filtered water was from the conventional ABV WTP, whose raw water source is from a highly eutrophic reservoir with a long detention time. COT and UV-254 values for the ozonation system feed water and for adsorbers F3 and F4 were in the ranges 2.0 to 2.5 mg C/L and 0.02 to 0.04 cm-1, respectively. It was observed that ozonation did not affect significantly the COT and UV-254 values. During the first thirty days of post filter adsorber operation, COT removal efficiencies were around 80 % for F1 and F3 (with CALGON GAC media) and around 40 % for F2 and F4 (with CARBOMAFRA GAC media). With sixty days of operation, COT removal efficiencies decreased to 40 % and 20%, respectively and stayed that way during eight months of operation. The mineral GAC media performed better regarding COT and UV-254 removals than the vegetal GAC media. On the other hand, no significant difference in effluent quality was observed regarding adsorbers with the same GAC media type receiving ozonated and non-ozonated filtered water. Thus ozonation did not seem to affect the adsorbing media. Regarding THM formation, adsorbers F1 and F3 presented a better performance than their counterparts (F2 and F4), the same pattern observed regarding COT and U-254 removals. During the first thirty days of adsorber operation, THM reduction efficiencies were about 85 % for F1 and F3 and 50 % for F2 and F4. With eight months of operation, such numbers stabilized around 50 % and 30 %, respectively, with adsorber behavior similar to what happened with regard to COT removal. Continuous, long term operation of the post filter adsorbers will allow us to assess microbiological effects associated to COT removals and THM formation potentials. Includes 7 references, tables, figures.