| 二级处理出水的UV-TiO2消毒及大肠杆菌和粪肠球菌光复活试验 |
| 摘要点击 1842 全文点击 1435 投稿时间：2013-07-21 修订日期：2013-11-25 |
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| 中文关键词 二级出水 UV-TiO2消毒 光复活 大肠杆菌 粪肠球菌 |
| 英文关键词 secondary effluent UV-TiO2 disinfection photoreactivation E. coli E. faecalis |
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| 中文摘要 |
| 对污水处理厂二级处理出水进行UV和UV-TiO2光催化消毒，研究了复活光强度（0~41 μW·cm-2）对不同方法消毒后水中大肠杆菌和粪肠球菌复活的影响.结果表明，UV-TiO2消毒效率远高于单纯的UV消毒.大肠杆菌经UV-TiO2消毒后，只有在较强的复活光照射下才会产生一定的光复活，而单纯UV消毒后即使在较低的复活光强下也会出现较强的光复活.UV-TiO2消毒对粪肠球菌的光复活现象抑制明显，在小于21 μW·cm-2的低复活光照射下粪肠球菌经72 h照射后几乎不发生光复活现象，只有在较强的复活光照射下才会产生一定的光复活. |
| 英文摘要 |
| Effects of photoreactivating light intensity (0-41 μW·cm-2) on photoreactivation of Escherichia coli (E. coli) and Enterococcus faecalis (E. faecalis) in the secondary effluent after UV and UV-TiO2disinfection were investigated. The results indicated that the disinfection efficiency of UV-TiO2 was much higher than that of UV disinfection. The photoreactivation rate of E. coli was much higher in UV disinfection than that in UV-TiO2 disinfection. Under high light intensity in UV-TiO2 disinfection, high resurrection rate can be induced. However, a higher resurrection rate can be introduced even under low light intensity in the UV disinfection. Meanwhile, UV-TiO2 disinfection had a strong inhibition effect on E. faecalis photoreactivation, when the light intensity was lower than 21 μW·cm-2, three was no resurrection occurred on E. faecalis after 72 h resurrection irradiation, only under a strong photoreactivating light intensity, the resurrection rate of E. faecalis was observed. |
