颗粒活性炭可以去除水源中的有机污染物，但随后会发生这些污染物的解吸。本文报告的研究采用经验证的数学模型进行，以评估因进水浓度降低或竞争引起的影响解吸的因素。研究的因素包括传质系数、平衡容量特性和过程变量，如床层长度、水力负荷和碳粒径。在大致接近处理厂运行的条件下，结果表明，出水浓度高于进水浓度的时间可能很长，可能在几周左右。设计用于高效吸附的系统也可提供高效解吸。本文概述了作者采用的数学模型和研究方法。 包括22个参考文献、表格和图表。

Granular activated carbon can remove organic contaminants from water supplies, but subsequent desorption of these contaminants can occur. The research reported in this article was performed with a verified mathematical model to evaluate factors affecting desorption caused either by a reduction in influent concentration or by competition. The factors studied were mass transfer coefficients, equilibrium capacity characteristics, and process variables such as bed length, hydraulic loading, and carbon particle size. Under conditions roughly approximating treatment plant operation, results indicate that the time during which the concentration in the effluent is higher than that in the influent can be significant, possibly on the order of weeks. A system designed for efficient adsorption may also provide for efficient desorption. The mathematical model employed by the authors, as well as study methods, is outlined in this article. Includes 22 references, tables, figures.