Lafi Walid K, Al-Qodah Z
Department of Chemical Engineering, Al-Balqaa Applied University Jordan, P.O. Box 340558, Amman, Marka 11134, Jordan.
J Hazard Mater. 2006 Sep 1;137(1):489-97. doi: 10.1016/j.jhazmat.2006.02.027. Epub 2006 Feb 28.
Advanced oxidation processes were combined with biological treatment processes in this study to remove both pesticides and then the COD load from aqueous solutions. It was found that O(3) and O(3)/UV oxidation systems were able to reach 90 and 100%, removal of the pesticide Deltamethrin, respectively, in a period of 210 min. The use of O(3) combined with UV radiation enhances pesticides degradation and the residual pesticide reaches zero in the case of Deltamethrin. The combined O(3)/UV system can reduce COD up to 20% if the pH of the solution is above 4. Both pesticide degradation and COD removal in the combined O(3)/UV system follow the pseudo-first-order kinetics and the parameters of this model were evaluated. The application of the biological treatment to remove the bulk COD from different types of feed solution was investigated. More than 95% COD removal was achieved when treated wastewater by the O(3)/UV system was fed to the bioreactor. The parameters of the proposed Grau model were estimated.
本研究将高级氧化工艺与生物处理工艺相结合，以去除水溶液中的农药及化学需氧量（COD）负荷。结果发现，在210分钟内，臭氧（O₃）和臭氧/紫外线（O₃/UV）氧化系统分别能够去除90%和100%的溴氰菊酯农药。臭氧与紫外线辐射相结合可提高农药降解率，对于溴氰菊酯而言，残留农药量可降至零。如果溶液pH值高于4，O₃/UV联合系统可将COD降低20%。O₃/UV联合系统中的农药降解和COD去除均符合准一级动力学，并对该模型的参数进行了评估。研究了应用生物处理去除不同类型进料溶液中大量COD的情况。当将经O₃/UV系统处理的废水送入生物反应器时，COD去除率超过95%。估算了所提出的格劳模型的参数。
