在全尺寸生物滤池反洗期间，对生物和非生物材料的去除模式进行了检查。反冲洗顺序包括空气冲刷的低速水洗、高速水洗和低速水洗。在试验反洗期间，生物和非生物材料的去除模式相似。生物物质和非生物物质的最大去除量出现在高速水洗开始时。此外，还研究了反冲洗时间与成熟期间生物过滤器性能之间的关系。在冲洗水透射率达到80%之前结束的高速水洗阶段的反洗与较短的成熟期和较低的回报率有关- 为过滤污水浊度提供服务。

Removal patterns were examined for biological and nonbiological materials during full-scale biofilter backwashes. The backwash sequence included low-rate water wash with air scour, high-rate water wash, and low-rate water wash. During the tested backwashes, the removal patterns for biological and nonbiological materials were similar. The maximum removal of biological material and the maximum removal of nonbiological material occurred at the beginning of the high-rate water wash. The relationship between backwash duration and biofilter performance during ripening was also investigated. Backwashes with high-rate water wash phases that ended before wash water transmittance reached 80 percent were associated with shorter ripening periods and lower return-to-service filter effluent turbidity.