作者提供了一项调查研究的结果 影响土壤生物膜积累的因素 实验室规模的配电系统，使用两种合成 还有真正的水。这些效果由医生进行评估 异养平板累积量的测定 在环形反应器中计算每单位面积的细菌数。这个 结果表明，消毒剂残留量最大 控制生物膜的最重要因素。 在特定条件下，生物膜水平最高 其中含有高水平的易于生物降解的 有机物存在，没有消毒剂 残余物 尽管已经进行了一些调查 这项研究的目的是检查两种环境中生物膜的形成情况 真实的和模型的配电系统，有相对 来自受控实验的有限信息 系统地调查了各种因素 影响生物膜形成的程度。这个 作者进行这项研究的目的是 量化以下因素的影响:氯或 一氯胺残留，易浓缩 可生物降解有机物，剪切（即流速）， 管道材料和温度。 这项调查的结果具有重要意义 生物膜控制的实际意义 系统。北美的做法通常是 在分配系统中保留一部分剩余物 用于生物膜控制。然而，这项研究的结果 建议应根据 各种因素以及各种因素之间的相互作用 这些因素对决定疾病的严重程度很重要 分配系统生物膜累积。包括29个参考文献、表格和图表。

The authors provide the results of a study investigating factors affecting biofilm accumulation in bench-scale distribution systems using both synthetic and real waters. The effects were assessed by measuring the accumulation of heterotrophic plate count bacteria per unit area in an annular reactor. The results showed that the disinfectant residual was the most important factor in terms of controlling biofilm. The highest biofilm levels were observed under conditions in which a high level of easily biodegradable organic matter was present and there was no disinfectant residual. Although a number of investigations have been conducted to examine the formation of biofilms in both real and model distribution systems, there is relatively limited information from controlled experiments that have systematically investigated the various factors influencing the extent of biofilm formation. The authors' purpose in conducting this research was to quantify the effects of the following factors: chlorine or monochloramine residual, concentration of easily biodegradable organic matter, shear (i.e., flow velocity), pipe material, and temperature. The results of this investigation have important practical implications for control of biofilms in distribution systems. North American practice is generally to maintain a residual in the distribution system, in part for biofilm control. However, the results of this study suggest that the residual should be defined based on a variety of factors and that interactions among the various factors are important in determining the extent of distribution system biofilm accumulation. Includes 29 references, tables, figures.