| Fe(Ⅱ)活化过硫酸钠深度处理工业园区污水处理厂出水 |
| 摘要点击 2663 全文点击 1921 投稿时间：2015-07-02 修订日期：2015-08-31 |
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| 中文关键词 深度处理 硫酸根自由基 有机物 响应面 优化 |
| 英文关键词 advanced treatment sulfate radical organic substances response surface optimization |
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| 中文摘要 |
| 采用Fe(Ⅱ)活化过硫酸钠(PS)技术对工业园区污水处理厂出水进行深度处理,通过响应曲面法考察了PS/COD、Fe(Ⅱ)/PS和pH对COD和TOC去除率的单独和联合效应.利用紫外-可见扫描、凝胶色谱及三维荧光等手段表征深度处理前后的有机物特性变化.结果表明,PS/COD和Fe(Ⅱ)/PS对COD去除影响极显著; 而PS/COD、Fe(Ⅱ)/PS和pH对TOC去除均有显著影响.PS/COD和pH联合效应对COD去除影响显著.最优工艺条件PS/COD比3.47、Fe(Ⅱ)/PS比3.32、pH 6.5时, COD和TOC去除率为50.7%和60.6%.Fe(Ⅱ)-PS氧化能将大分子有机物转化为小分子,削减类蛋白质、类富里酸和类腐殖酸的含量. |
| 英文摘要 |
| Fe(Ⅱ) activated sodium persulfate (PS) technology was used for advanced treatment of effluent from industrial park wastewater treatment plant. Separate and combined effects of PS/COD, Fe(Ⅱ)/PS and pH on COD and TOC removal were analyzed by the response surface methodology. Variations of organic substances before and after Fe(Ⅱ)-PS oxidation were characterized by UV-Vis spectrometry, gel chromatography and three-dimensional fluorescence. PS/COD and Fe(Ⅱ)/PS had significant effect on COD removal, while all the three factors had significant effect on TOC removal. The combined effect of PS/COD and pH had significant effect on COD removal. COD and TOC removal efficiencies reached 50.7% and 60.6% under optimized conditions of PS/COD 3.47, Fe(Ⅱ)/PS 3.32 and pH 6.5. Fe(Ⅱ)-PS oxidation converted macromolecular organic substances to small ones, and reduced contents of protein-, humic-and fulvic-like substances. |
