| 焦化废水外排水的TiO2光催化氧化深度处理及有机物组分分析 |
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| 引用本文： | 肖俊霞,吴贤格.焦化废水外排水的TiO2光催化氧化深度处理及有机物组分分析[J].环境科学研究,2009,22(9):1049-1055. |
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| 作者姓名： | 肖俊霞 吴贤格 |
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| 作者单位： | 肇庆学院化学化工学院,广东 肇庆 526061 |
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| 基金项目： | 广东省自然科学基金项目 |
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| 摘 要： | 采用TiO2光催化氧化法对焦化废水外排水进行深度处理，考察反应时间，TiO2投加量及废水初始pH对TOC降解的影响，通过GC/MS技术对处理前后废水中的有机物组分进行定性分析，解析废水在TiO2光催化氧化过程中有机物的降解规律. 结果表明:在反应时间为3 h，TiO2投加量为4 g/L，以及不调节废水pH的条件下，焦化废水外排水经TiO2光催化氧化深度处理后TOC的去除率为53.40%，有机物种类由66种降为23种；TiO2光催化氧化法对除多环芳烃外的其他有机物均有较好的去除效果；不同种类有机物在TiO2光催化氧化过程中的降解速率为石油烃>醇、酸、醛等有机物>酚>苯系物>含氮杂环有机物>多环芳烃.
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| 关 键 词： | 焦化废水 TiO2光催化氧化法 深度处理 有机物 |
| 收稿时间： | 2008/12/29 0:00:00 |
| 修稿时间： | 2009/3/19 0:00:00 |
TiO2 Photocatalytic Oxidation Treatment and Analysis of Organic Pollutant Components of Discharge Wastewater from Coking Wastewater Treatment Station |
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| XIAO Jun-xia and WU Xian-ge.TiO2 Photocatalytic Oxidation Treatment and Analysis of Organic Pollutant Components of Discharge Wastewater from Coking Wastewater Treatment Station[J].Research of Environmental Sciences,2009,22(9):1049-1055. |
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| Authors: | XIAO Jun-xia and WU Xian-ge |
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| Institution: | School of Chemistry and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China |
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| Abstract: | TiO_2 photocatalytic oxidation was used to perform the advanced treatment of discharge wastewater from a coking wastewater treatment station.The effects of reaction time,TiO_2 dosage and initial pH on TOC removal rate of wastewater were tested.The GC/MS technique was used to give a qualitative analysis of wastewater before and after treatment.The degradation regularity of wastewater during the TiO_2 photocatalytic oxidation process was analyzed.The result showed that under the conditions of reaction time 3 ... |
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| Keywords: | coking wastewater TiO_2 photocatalytic oxidation technology advanced treatment organic pollutants |
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