本文描述了反冲洗策略和水力瞬变对生物过滤器过滤性能的影响。根据过滤出水浊度、水头损失、不可蒸煮有机碳（NPOC）、可同化有机碳（AOC）和微生物计数评估过滤性能。本文报告的工作是生物过滤器的主要长期中试工厂调查的一部分，由不同的研究人员使用几个平行组件。本研究的目的是:评估反洗策略（空气冲刷、氯化水冲洗、各种床层膨胀、塌陷脉冲空气和水流量）对生物过滤器性能的影响；此外，从AOC、浊度和微生物计数方面研究水力负荷突然变化对过滤器运行长度、反洗频率和水质的影响。包括24个参考文献、表格和图表。

This article describes the effect of backwashing strategies and hydraulic transients on filtration performance of biological filters. Filtration performance was assessed in terms of filter effluent turbidity, head loss, nonpurgeable organic carbon (NPOC), assimilable organic carbon (AOC), and microbial counts. The work reported here is part of a major long-term pilot-plant investigation of biological filters, with several parallel components by various investigators. The objectives of this study were to: evaluate the effect of backwash strategies -- air scour, chlorinated water wash, various bed expansions, collapse-pulsing air, and water flow rates -- on the performance of biological filters; and, investigate the effect of sudden changes in hydraulic loading on filter run length, backwash frequency, and water quality in terms of AOC, turbidity, and microbial counts. Includes 24 references, tables, figures.