| 铁刨花-Fenton-絮凝工艺对染料生产废水中AOX、色度和TOC的去除效果研究 |
| 摘要点击 2230 全文点击 816 投稿时间：2015-12-22 修订日期：2016-03-03 |
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| 中文关键词 铁刨花-Fenton-絮凝工艺 染料生产废水 可吸附性有机卤代物 色度 苯胺类物质 |
| 英文关键词 iron scraps-Fenton-coagulation chemical dyestuff wastewater absorbable organic halogens (AOX) chroma anilines |
| 作者 | 单位 | E-mail | | 舒小铭 | 浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006
常州大学环境与安全工程学院, 常州 213164 | 1159568779@qq.com | | 徐灿灿 | 浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006 | | | 文晓刚 | 嘉兴学院南湖学院, 嘉兴 314001 | wenxg.thzj@gmail.com | | 朱静娜 | 嘉兴市环境保护监测站, 嘉兴 314000 | | | 赵远 | 常州大学环境与安全工程学院, 常州 213164 | | | 刘锐 | 浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006 | | | 陈吕军 | 浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006
清华大学环境学院, 北京 100084 | chenlj@tsinghua.edu.cn |
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| 中文摘要 |
| 采用铁刨花-Fenton-絮凝工艺处理染料生产废水,考察了不同Fe2+与H2O2摩尔比(1:3~1:15)、铁刨花反应时间(2~5 h)、Fenton氧化反应时间(20~80 min)下可吸附性有机卤代物(AOX)、色度和总有机碳(TOC)的去除效果.结果表明,AOX、色度和TOC去除率随Fe2+与H2O2摩尔比的降低先升高后减少,随铁刨花和Fenton反应时间的增加而持续升高.最优化条件为Fe2+与H2O2摩尔比1:8、铁刨花反应时间4 h和Fenton反应时间60 min,该条件下AOX、色度和TOC的去除率分别为94.2%、93.7%和27.2%.比较实验结果表明,铁刨花-Fenton-絮凝组合工艺对废水AOX、色度和TOC的去除效果远优于铁刨花处理、Fenton氧化、絮凝沉淀的单个技术或两两技术组合效果.GC-MS分析表明,废水中的有机卤代物和苯胺类污染物得到高效去除,此外硝基苯类、苯酚类、苯甲醛类、醚类、腈类和杂环化合物等有毒有害物质也均得到高效去除.叔丁醇捕获·OH实验表明·OH在Fenton反应中的主导作用. |
| 英文摘要 |
| Iron scraps-Fenton-coagulation process was applied to chemical dyestuff wastewater. The removal performance of absorbable organic halogens(AOX), chroma and total organic carbon (TOC) was investigated at different molar ratios of Fe2+ to H2O2 (1:3-1:15), iron scraps reaction time (2-5 h) and Fenton reaction time (20-80 min). The results showed that the removal ratios of AOX, chroma and TOC firstly increased and then decreased with the decrease of the molar ratio of Fe2+ to H2O2, while continuously increased with the increase of iron scraps and Fenton reaction time. The optimal condition was determined as Fe2+:H2O2 ratio of 1:8, iron scraps reaction time of 4 h and Fenton reaction time of 60 min, under which 94.2% of AOX, 93.7% of chroma and 27.2% of TOC were removed. A comparison study revealed that the iron scraps-Fenton-coagulation combined process could achieve much better removal of AOX, chroma and TOC than any other single or combined processes of iron treatment, Fenton oxidation and coagulation. GC-MS analysis revealed that halogenated compounds and anilines were efficiently removed, as well as nitrobenzenes, phenols, benzaldehydes, ethers, nitriles and heterocyclic compounds.·OH was found to devote much in the Fenton reaction according to the tert-butyl alcohol trapping hydroxyl radicals test. |
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