紫外光照射下废水中二甲苯的降解

UV irradiation induced degradation of xylene in wastewater

目的研究废水中二甲苯的降解条件。方法在紫外灯光照射下,研究各种因素对废水中二甲苯降解效率的影响。结果与结论二甲苯初始浓度为200mg/L,pH值为7,加0.1mLH2O2,40W紫外灯光照1h时二甲苯的降解效率可以达到80.88%。

Aim To research the condtions for degradation of xylene in wastewater. Methods Xylene is degradated with the ultraviolet light in order to investigate the effect of various parameters on the removal efficiency of xylene in wastewater. Results and Conclusion The degradation rate can beevidently affected by the initial concentration of the xylene, illuminating time, pH of the solution, H2O2 content and other factors. The conditions of efficient degradating xylene are the initial xylene concentration is 200 mg/L, pH=7, the amount of H2O2 is 0.1 mL and illuminating time 1 h （40 W illuminating lamp）. The degradating efficient is up to 80. 88% under these conditions.