Civil and Mechanical Engineering Building 2002 - 6250, Applied Science Lane, Vancouver, BC, Canada V6T 1Z4.
Water Res. 2014 Apr 1;52:40-50. doi: 10.1016/j.watres.2013.12.017. Epub 2013 Dec 21.
The presence of natural organic matter (NOM) in drinking water treatment presents many challenges. Integrated treatment processes combining oxidation and biofiltration have been demonstrated to be very effective at reducing NOM, specifically biodegradable organics. Laboratory bench-scale experiments were carried out to investigate the effect of oxidation by ozonation or UV/H2O2 on NOM. Specifically the rate of biodegradation was studied by performing bench-scale biodegradation experiments using acclimatized biological activated carbon (BAC). For the source water investigated, oxidation did not preferentially react with the biodegradable or non-biodegradable NOM. In addition, the type or dose of oxidation applied did not affect the observed rate of biodegradation. The rate kinetics for biodegradation were constant for all oxidation conditions investigated. Oxidation prior to biofiltration increased the overall removal of organic matter, but did not affect the rate of biodegradation of NOM.
饮用水处理中天然有机物 (NOM) 的存在带来了诸多挑战。氧化与生物过滤相结合的综合处理工艺已被证明在去除 NOM（尤其是可生物降解有机物）方面非常有效。本研究进行了实验室规模的台架实验，以研究臭氧氧化或 UV/H2O2 氧化对 NOM 的影响。具体而言，通过使用驯化生物活性炭 (BAC) 进行台架生物降解实验来研究生物降解的速率。对于所研究的水源，氧化并未优先与可生物降解或不可生物降解的 NOM 发生反应。此外，所应用的氧化类型或剂量并不影响观察到的生物降解速率。所有所研究的氧化条件下的生物降解速率动力学常数都是恒定的。生物过滤前的氧化增加了有机物的总去除率，但不影响 NOM 的生物降解速率。
