臭氧氧化苊及其中间产物特征分析

为考察生化法代替部分臭氧氧化的可能,研究了苊这种分子中含有饱和C-C键的典型性多环芳烃的臭氧氧化过程。使用液相色谱和紫外光谱观察了氧化过程和中间产物的变化,测定了中间产物水溶液的总有机碳浓度(TOC)和中间产物对活性污泥氧吸收速率(OUR)的影响。结果表明,苊被臭氧降解的同时将有中间产物生成;臭氧可以与中间产物继续反应,但过量的臭氧未实现对有机物的矿化;臭氧氧化改善了苊的可生化性。臭氧不完全氧化结合生物降解,有望成为兼顾经济性与效率的处理废水中苊的方法。

Ozonation of acenaphthene and the characteristics of the intermediate products

A typical polycyclic aromatic hydrocarbon(PAH) with saturated C-C bonds to used test the feasibility of using biological processes instead of ozonation to mineralize acenaphthene.The ozonation process and the changes in the intermediate products were examined with high pressure liguid chromatograms and ultraviolet spectra.The tests analyzed total organic carbon in the aqueous solution of the intermediate products and the influence of these compounds on the oxygen uptake rate of the activated sludge.The intermediate products were produced as soon as the acenaphthene degraded and these intermediate products could be ozonated.The organic products were difficult to mineralize even though a large amount of ozone was consumed.The results show that ozonation improves the bioavailability of acenaphthene.The combination of ozonation with biodegradation may be an efficient and economic way to mineralize acenaphthene in wastewater.