进行了间歇降解实验，以评估天然有机物（NOM）的生物降解程度与臭氧剂量的关系。对饮用水处理中可能遇到的四种NOM来源进行了表征和测试。随着臭氧剂量从0增加到7.3 mg臭氧/mg总有机碳（TOC），所有来源的生物降解性都得到了增强。臭氧氧化的增加导致含有大量高分子量有机物的NOM源TOC去除率持续提高。对于紫外吸收率较低的非地带性源，观察到更大的生物降解- 与总有机碳的比例以及更大比例的低分子量有机物。包括31个参考文献、表格、图表。

Batch degradation experiments were conducted to evaluate the extent of biodegradation of natural organic matter (NOM) as a function of ozone dosage. Four NOM sources that might be encountered in drinking water treatment were characterized and tested. The biodegradability of all sources was enhanced as the ozone dose was increased from 0 to 7.3 mg ozone/mg total organic carbon (TOC). Increased ozonation resulted in consistently improved TOC removals for NOM sources having a large fraction of high-molecular-weight organics. Greater biodegradation was observed for the unozonated sources with lower UV-absorption-to-TOC ratios and a larger fraction of low-molecular-weight organics. Includes 31 references, tables, figures.