已经进行了许多实验室研究 颗粒物和微生物的去除 使用标准的无交叉过滤协议 水流过滤床。这 这项研究是为了更好地理解 错流对滤液质量的影响 确实发生在滤床上。更大的暂停 颗粒倾向于沉淀在溪流或水中 在海滩上靠近床，导致 更大尺寸颗粒的浓度超过 较小的。更大的微生物，比如 隐孢子虫倾向于集中在 河床（假设密度特征相似） 与较小的微生物相比，例如 大肠杆菌。如溪流或波浪 在湍流条件下，作用增加， 这种排序的影响会降低 明显地。理解重要性 流量的变化有助于更好地选择河岸的位置 以及海底渗透和帮助确定 工程过滤管道的流动特性 具有交叉流的系统。包括14个参考文献、表格和图表。

Many laboratory studies have been performed on particle and microbe removal using a standard filter protocol with no cross flow of water across the filter bed. This study was conducted to better understand the effect on filtrate quality when cross flow does occur across the filter bed. Larger suspended particles tend to settle in a stream or on a beach toward the bed, resulting in a concentration of larger-sized particles over smaller ones. Larger microbes such as Cryptosporidium tend to concentrate in the streambed (assuming similar density characteristics) versus smaller microbes such as Escherichia coli. As stream flow or wave action increases toward turbulent flow conditions, the impact of this sorting decreases significantly. Understanding the importance of flow helps to better select sites for riverbank and seabed infiltration and helps determine flow characteristics in engineered filtered systems with cross flow.Includes 14 references, tables, figures.