| 水温对臭氧处理印染废水生化出水的影响 |
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| 引用本文： | 钱飞跃,孙贤波,刘勇弟.水温对臭氧处理印染废水生化出水的影响[J].华东理工大学学报(自然科学版),2012,38(1):59-62. |
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| 作者姓名： | 钱飞跃 孙贤波 刘勇弟 |
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| 作者单位： | 华东理工大学资源与环境工程学院,上海,200237 |
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| 基金项目： | 国家高技术研究发展计划863重点项目 |
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| 摘 要： | 以印染废水生化出水为研究对象,采用非线性方程拟合不同水温条件下臭氧对A254（254nm的吸光度）和溶解性有机碳（DOC）的去除过程,分析了表观一级反应速率系数k（t）的变化规律。拟合结果表明,当水温在280313 K时,60 min内A254和DOC的k（t）变化范围分别为（0.063 5±0.031 6）0.089 5±0.044 1min-1和（0.011 0±0.005 7）0.020 9±0.002 9min-1,且都随反应时间呈整体下降趋势。DOC平均活化能约为A254的2倍,臭氧对DOC的去除更易受到水温变化的影响。另外,较高的溶解臭氧质量浓度有利于在低温条件（280 K）下在反应初始阶段就获得较大的DOC反应速率系数。
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| 关 键 词： | 臭氧氧化 印染废水生化出水 水温 表观一级反应速率系数 |
Effect of Water Temperature on Ozonation of Biotreated Textile Effluents |
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| QIAN Fei-yue,SUN Xian-bo,LIU Yong-di.Effect of Water Temperature on Ozonation of Biotreated Textile Effluents[J].Journal of East China University of Science and Technology,2012,38(1):59-62. |
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| Authors: | QIAN Fei-yue SUN Xian-bo LIU Yong-di |
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| Institution: | (School of Resources and Environmental Engineering,East China University of Science and Technology,Shanghai 200237,China) |
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| Abstract: | The ozonation of A254 and DOC in biotreated textile effluents at various water temperatures was studied in this paper.Evolution of apparent first-order rate coefficient k(t) was analyzed in terms of non-linear model.Results showed that k(t) of A254 and DOC,which decreased with reaction time entirely,varied from(0.063 5±0.031 6) min-1 to(0.089 5±0.044 1) min-1 and from(0.011 0±0.005 7) min-1 to(0.020 9±0.002 9) min-1 during 60 min,respectively,when water temperature is at 280-313 K.Furthermore,the effect of temperature on DOC removal was more significant,since mean activation energy of the former was twice as much as A254.And high dissolved ozone concentration appeared to enhance k(t) of DOC at 280 K in the initial stage of ozonation. |
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| Keywords: | ozonation biotreated textile effluents water temperature apparent first-order rate coefficients |
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