过滤器吸附器中的颗粒活性炭（GAC）为微生物的增殖提供了良好的支撑表面。因此，GAC床可能会释放带有附着细菌的碳颗粒，从而防止消毒。在这项中试工厂研究中，从GAC过滤器吸附器的产品水中收集颗粒物，检查细菌定植情况，并通过能量色散X射线分析进行表征。结果表明，如果颗粒浓度在产品水中发现的范围内，即小于20 ug/L，则附着在GAC颗粒上的细菌可以用氯消毒。增加颗粒浓度十倍会干扰消毒效率。用于预处理的粉末活性炭有助于在产品水中发现颗粒。包括17个参考文献、表格、图表。

Granular activated carbon (GAC) in filter-adsorbers provides an excellent support surface for the proliferation of microorganisms. Therefore, GAC beds may release particles of carbon with attached bacteria that are protected from disinfection. In this pilot-plant study, particles were collected from the product waters of GAC filter-adsorbers, examined for bacterial colonization, and characterized by energy-dispersive X-ray analysis. Results showed that bacteria attached to GAC particles could be disinfected with chlorine if particle concentrations were in the range found in the product waters, i.e., < 20 ug/L. Increasing particle concentration tenfold interfered with disinfection efficiency. Powdered activated carbon used in pretreatment contributed to the particles found in product water. Includes 17 references, tables, figures.