饮用水中致突变有机物的光化学氧化研究

以Ａｍｅｓ试验为指标，对城市自为水中致突变有机物的光分解和光催化氧化自理效果进行了研究对比，实验表明，在相同的光照强度下，固定膜光催化氧化对水中致突变物有良好的去除作用，效果优于直接光分解，在处理时间同为１ｈ的条件下，光催化氧化对ＴＡ９８菌株诱变指数的削减率为４７％，而光分解的削减率仅为３３％，对水样的有总有机炭，色谱图峰数和峰面积，及Ａｍｅｓ试验透变指数等３个指标的测定结果分析表明，Ａｍｅｓ试验

Photochemical Oxidation of Mutagenic Organics in Drinking Water

Based on the result of Ames test, removal efficiencies of photolysis and photocatalytic oxidation to mutagenic organics in municipal running water have been studied. An immobile membrane photocatalysis reactor and the same dimension photolysis reactor were used. Under same radiation condition, removal efficiency of photocatalytic oxidation was better than that of photolysis to mutagenic organics in water. After one hour treatment, induced mutation index of TA98 strain was reduced by 47% for photocatalytic oxidation, while only 33% for photolysis. Based on experimental result, some analytical criteria for evaluating drinking water quality were compared and discussed. To TOC, chromatogram calculation and Ames test, the latter one seems to be the best one for evaluating the effuent quality of drinking water deep treatment with oxidation process.