| 紫外-Fenton法处理高盐有机废水 |
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| 引用本文： | 姜妍, 蒋林时, 苗时雨, 刘锐平, 兰华春, 胡承志. 紫外-Fenton法处理高盐有机废水[J]. 环境工程学报, 2016, 10(5): 2349-2354. doi: 10.12030/j.cjee.201412143 |
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| 作者姓名： | 姜妍 蒋林时 苗时雨 刘锐平 兰华春 胡承志 |
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| 作者单位： | 1. 辽宁石油化工大学化学化工与环境学部, 抚顺 113001; 2. 中国科学院饮用水科学与技术重点实验室, 北京 100085 |
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| 基金项目： | 国家自然科学基金创新研究群体项目(51221892) |
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| 摘 要： | 以某电镀厂水回用系统产生的高盐有机废水为对象,对比研究了Fenton、UV-Fenton等工艺去除COD性能,考察了初始pH、H2O2投加量、Fe2+与H2O2摩尔比、反应时间等参数对处理效果的影响。结果表明:UV-Fenton工艺的最佳条件为初始pH=3.0,H2O2的投加量3 mmol/L,RFe2+:H2O2=1:1,反应时间30 min;在此条件下,COD去除率可达到60%以上,分别较Fenton和UV-H2O2工艺提高23.0%和39.3%。UV-Fenton工艺中,Fenton与UV表现出良好的协同效果,其处理效果较单独Fenton和单独UV处理效果之和高14.7%。UV的引入促进Fe(II)/Fe(Ⅲ)循环,可以提高·OH生成量以及Fe2+与H2O2利用率。UV-Fenton是处理高盐有机废水的可行工艺之一。
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| 关 键 词： | UV-Fenton UV-H2O2 高盐有机废水 Fe2+与H2O2摩尔比 |
| 收稿时间： | 2015-03-02 |
Treatment of high-salinity organic wastewater by ultraviolet-Fenton process |
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| Jiang Yan, Jiang Linshi, Miao Shiyu, Liu Ruiping, Lan Huachun, Hu Chengzhi. Treatment of high-salinity organic wastewater by ultraviolet-Fenton process[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2349-2354. doi: 10.12030/j.cjee.201412143 |
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| Authors: | Jiang Yan Jiang Linshi Miao Shiyu Liu Ruiping Lan Huachun Hu Chengzhi |
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| Affiliation: | 1. College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, China; 2. Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China |
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| Abstract: | This study focused on the high-salinity organic wastewater from the recycling system of an electroplating factory and compared the chemical oxygen demand (COD) removal efficiency among various treatment processes including Fenton and UV-Fenton technologies. The effects of initial pH, hydrogen peroxide (H2O2) dosage, the molar ratios of iron (Fe2+)/H2O2 (RFe2+:H2O2), and reaction time on COD removal were investigated, and results indicated that the UV-Fenton process achieved the optimum COD removal of above 60% at an initial pH of 3.0, H2O2 dose of 3 mmol/L, and RFe2+:H2O2 of 1:1 after a 30 min contact time. These results were 23.0% and 39.3% higher than those achieved by Fenton and UV-H2O2 processes, respectively. Moreover, UV and Fenton show synergistic effects towards COD removal, and the removal efficiency was 14.7% higher than the summative value achieved by UV and Fenton processes, respectively. Meanwhile, UV promotes hydroxide (·OH) production and the utilization of Fe2+ and H2O2, owing to the accelerated transformation cycles between Fe(II) and Fe(Ⅲ) species. The UV-Fenton process is particularly valuable in the treatment of high-salinity organic wastewater. |
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| Keywords: | UV-Fenton UV-H2O2 high-salinity organic wastewater Fe2+ H2O2 molar ratio |
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