摘要
讨论了光催化氧化处理造纸废水的影响因素,如催化剂的用量、pH值、过氧化氢的用量、光照时间等,并通过正交试验,得出了WO3作为光催化剂处理草浆废水时的影响因素次序是:H2O2的用量>WO3的用量>光照时间>pH值。确定了反应最佳工艺条件为:pH=6.00,H2O2加入量为0.24mL,WO3用量为3g/L,光照时间为4h,出水COD值达到排放标准。同时通过对造纸废水光催化氧化动力学级数的研究发现,光催化技术处理造纸废水的反应符合一级反应动力学。
The paper aims to introduce the authors' study on the factots influencing photocatalysis oxidation process, such as the amount of photocatalyst, dosage of H2O2, pH value, illuminating time etc. for such factors are intricate and interrelated and therefore proves to be the preconditions to the industrial application. As a matter of fact, orthogonal experimental method helps to find the order of main influential factors of photocatalysis when pulp and paper effluent are treated. The paper also studied the dynamic nature of the reaction. The result shows that the amount of H2O2 is the best domain factor, with the amount of WO3, the radiant time, and the pH value followed. The experimental data help to find the optimal conditions as follows: pH value should be 6.00, the amount of catalyst is 0.03 g, with the dosage of H2O2 being 0.24 mL and illumination time 4 h. In addition, the dynamics of this reaction is a single order reaction. The conclusion is in conformity with the photocatalysis oxidation in simulated treating of single component wastewater.
出处
《安全与环境学报》
CAS
CSCD
2006年第1期77-79,共3页
Journal of Safety and Environment
基金
徐州师范大学重点科研项目(02AXW008)
关键词
环境工程
造纸废水
光催化
WO3
正交实验
动力学
environmental engineering
paper-making wastewater
photocatalysis oxidation
WO3
orthogonal experimentdesign
kinetics