Development of Evaluation of Natural Organic Matter (NOM) related to Advanced Oxidation Treatment

研究了光催化反应作为一种高级氧化水处理技术。二氧化钛被涂在玻璃上，用作催化剂。采用与太阳光波长相近的低压汞灯和黑光灯作为光源。测定了苯酚和亚甲基蓝在不同条件下的分解速率。定量评价了流动条件、光强和催化剂比面积的作用。反应速率符合Langmure-Hinshelwood方程，上述因素与方程中的参数相关。对不同类型的tio2进行了测试，并从催化剂的表面电荷来估计和解释pH的作用。采用气相色谱/质谱法对天然有机质（NOM）进行评价。开发了细菌再生潜力作为NOM的评价方法，采用流量法对细菌进行计数，超声作为预处理必不可少。

In this study, photocatalytic reaction was investigated as an advanced oxidation water treatment. Titanium dioxide was coated on a glass and used as a catalyst. Low pressure mercury lamp and black light lamp, which has similar wavelength to sun light, were used as light sources. The decomposition rate of phenol and methylene blue under various condition was determined. The role of flow condition, light intensity and specific catalyst area was quantitatively evaluated. The reaction rate followed Langmure-Hinshelwood equation, and the factors above was correlated to the parameters in the equation. Different types ofTiO2 was also tested, and the role of pH was estimated and explained from the surface charge of catalyst.GC/MS was applied to the evaluation of Natural Organic Matter (NOM). Bacterial Regrowth potential was developed as a evaluation method of NOM. Flowsitemetry was applied to counting the bacteria, and sonication was essential as pretreatment.