实验室规模的生物活性砂滤器用于评估天然有机物（NOM）来源和空床接触时间（EBCT）对凝结和臭氧氧化NOM溶液中总有机碳（TOC）去除的影响。臭氧氧化的剂量范围为2.0至4.0 mg臭氧/mg TOC，用于增强有机物的生物降解。生物滤池中TOC的去除范围为生物滤池进水浓度的16%至33%。有机碳的来源对TOC的去除有显著影响，但在4到20分钟的范围内与EBCT无关。在包括混凝和生物过滤在内的整个水处理计划中，与整个处理序列的总去除量相比，生物过滤对TOC去除的贡献相对较小。 然而，在一个生物过滤实验中，TOC的可生物降解部分的去除率为100%，这表明生物过滤器可能有效地减少分配系统中随后的再生。包括29个参考文献、表格和图表。

Laboratory-scale biologically active sand filters were used to evaluate the effect of natural organic matter (NOM) source and empty bed contact time (EBCT) on the removal of total organic carbon (TOC) from coagulated and ozonated NOM solutions. Ozonation at dosages in the range of 2.0 to 4.0 mg ozone/mg TOC were used to enhance biodegradation of the organic matter. TOC removal in the biofilters ranged from 16 to 33 percent of the biofilter influent concentration. TOC removal was significantly affected by the source of the organic carbon but was independent of EBCT in the range of 4 to 20 min. In the context of an entire water treatment plan, including coagulation and biofiltration, the contribution of biofiltration to TOC removal was relatively small compared with total removals across the entire treatment train. In one biofiltration experiment, however, removal of the biodegradable fraction of TOC was 100 percent, suggesting that biofilters may be effective in reducing subsequent regrowth in distribution systems. Includes 29 references, tables, figures.