中文摘要：

采用水射流空化强化TiO2光催化处理活性艳红X-3B模拟废水3．3L，进行了自来水与蒸馏水的效果比较并初步研究了反应温度、催化剂投加量、溶液pH、染料初始质量浓度以及空化管喉管直径对染料去除率的影响。针对模拟废水，实验结果表明：该工艺克服了传统光催化技术中催化剂容易团聚的不足，使反应能够持续进行。溶剂全部为蒸馏水的脱色率和表观反应动力学常数分别是溶剂全部为自来水的2．1倍和4．2倍。在最优条件下：染料初始质量浓度30mg／L，pH3．0，温度60℃，TiO2投加量150mg／L，反应进行90min后染料脱色率可以达到96％。而在结合实际情况优化后的推荐值下，pH6．0，温度40℃，空化管喉管直径选用1．5mm，其它条件不变，染料脱色率及COD去除率分别为69％和54％，该结果更能指导实践。

英文摘要：

Cavitating water jet assisted photocatalysis was used to treat Reactive Brilliant Red X-3B simulated wastewater 3.3 L. Effects of tap water and distilled water were compared, and temperature, concentration of TiOz, pH, initial concentration of dye and throat diameter of venture were investigated. For the simulated wastewater, results showed that the method overcame the shortcoming of catalyst getting together in traditional photocatalysis. Decolorization efficiency and kinetic constant in distilled water solvent were 2.1 and 4.2 times higher than tap water solvent respectively. Under the optimum treatment conditions as dye concentration 30 mg/L, temperature 60 ℃, TiO2 150 mg/L, pH value 3.0, the decolorization efficiency was up to 96% in 90min. Considering the practical situation, the recommended treatment conditions were as temperature 40℃ pH value 6.0, veturi throat diameter 1.5mm and the same other value as above, the decolorization efficiency and COD removal were up to 69% and 54% respectively, which are better to guide the practice.