氟苯胺同系物降解性能对比实验研究

利用驯化污泥研究了邻氟苯胺、对氟苯胺、2,4-二氟苯胺的好氧生物降解性能.结果表明，3种氟苯胺的好氧生物降解性能从高到低依次为，对氟苯胺、邻氟苯胺和2,4-二氟苯胺.降解动力学分析表明，在初始浓度在8～50 mg·L^-1范围内，除2,4-二氟苯胺在实验浓度8.56 mg/L时为一级反应，其他为零级反应.且它们的降解规律都符合Monod方程.污染物化学结构特性与其生物降解性能相关性研究表明，热力学参数与氟苯胺好氧生物降解性能相关性最好，空间参数次之，而电性参数最差.并研究了共代谢条件下葡萄糖和苯胺对2,4-二氟苯胺的好氧降解的影响，葡萄糖的引入有促进作用，而苯胺只在一定浓度范围内有促进作用.因而，氟苯胺的生产废水与生活污水合并处理以及多种组分混合废水处理是可行的.

Aerobic Biodegradation Performance of Fluoroaniline

Aerobic biodegradation of 2-fluoroaniline, 4-fluoroaniline, and 2,4-difluoroaniline by the acclimated activated sludge was studied. The biogradability of 4-fluoroaniline is the best among the three kinds of fluoroanilines, and 2,4-difluoroaniline is the worst. The dynamic analysis shows that, the biodegradation of fluoroanilines is in accordance with zero order law except the 2,4-difluoroaniline on 8.56 mg/L, and their degradation all fit the Monod model. Thermodynamic coefficient (heat of formation) is found to be the most relative parameter with the maximum specific substrate degradation rate. Glucose, as catabolism substrate could accelerate the biodegradation of 2,4-difluoroaniline. Aniline under certain concentration also accelerate the biodegradation of 2,4-difluoroaniline, which indicates that there are both competition and cometabolism between aniline and 2,4-difluoroaniline. So, fluoroanilines containing wastewater and domestic sewage could be treated together in practice.