Burlingame G A, Suffet I H, Pipes W O
Can J Microbiol. 1986 Mar;32(3):226-30. doi: 10.1139/m86-045.
Granular activated carbon (GAC) beds may be used for removal of dissolved organic matter during the treatment of drinking water. However, they might also change the microbiological quality of the water entering the distribution system either by changing the predominant bacteria or the bacterial density of the treated water. A 3-year pilot plant study of water treatment using GAC beds was conducted at the Baxter Water Treatment Plant in Philadelphia. During the study, bacteria were isolated from the raw water and from the effluents of the GAC treatment units. At the end of the study, bacteria were also isolated from the GAC units and from sand beds operated in parallel with the GAC units. Bacterial genera in the GAC effluents and in the GAC units themselves were similar to those found in the raw water and in the sand beds. Prechlorination and (or) preozonation of the water before GAC treatment had no noticeable effect on the bacterial genera found as compared with GAC unit having no predisinfection. The bacterial genera found in this study were similar to those found in seven other studies of GAC water treatment that used a variety of treatment schemes and a variety of heterotrophic plate count techniques to evaluate bacterial populations. From these several studies it appears that GAC treatment does not change the nature of the bacterial populations associated with drinking water.
颗粒活性炭（GAC）滤床可用于饮用水处理过程中去除溶解的有机物。然而，它们也可能通过改变处理后水中的优势细菌或细菌密度来改变进入配水系统的水的微生物质量。在费城的巴克斯特水处理厂进行了一项为期3年的使用GAC滤床进行水处理的中试研究。在研究过程中，从原水和GAC处理单元的流出物中分离出细菌。在研究结束时，还从GAC单元以及与GAC单元并行运行的砂床中分离出细菌。GAC流出物和GAC单元本身中的细菌属与原水和砂床中发现的细菌属相似。与未进行预消毒的GAC单元相比，GAC处理前对水进行预氯化和（或）预臭氧化对所发现的细菌属没有明显影响。本研究中发现的细菌属与其他七项GAC水处理研究中发现的细菌属相似，这些研究采用了各种处理方案和各种异养平板计数技术来评估细菌种群。从这几项研究来看，GAC处理似乎不会改变与饮用水相关的细菌种群的性质。
