色谱分析条件.doc

chen焦化废水Fenton氧化预处理过程中主要有机污染物的去除 谢 成1，晏 波1，韦朝海1,*，吴超飞1，任 源1，刘显清2 华南理工大学环境科学与工程学院，广东，广州，510640 广东韶关钢铁集团有限公司焦化厂，广东，韶关，512123 收稿日期： 修回日期： 录用日期： 摘要：以焦化废水原水为研究对象，采用Fenton氧化法进行预处理，在考察H2O2用量与反应时间对焦化废水中CODCr、挥发酚去除率影响的基础上，重点分析反应体系中有毒难降解有机物浓度的变化。通过GC-MS分析发现，在反应温度为30℃，H2O2用量为1/2理论量，n (Fe2+)∶n (H2O2) = 1∶20的条件下，酚、苯系物、石油烃、含氮杂环有机物和多环芳烃在反应10min时相应的去除率分别达到93.7％、96.2％、92.1％、92.7％和89.2％，此时的挥发酚类物质去除率为98.6%，COD去除率为54.4%。结果表明，焦化废水经Fenton氧化预处理不仅能取得较高的CODCr、挥发酚类物质去除率，而且能将其中有毒难降解有机污染物氧化为较易生物降解的醇、醛、酮及有机酸等中间产物，有利于后续生物处理过程。 关键词：焦化废水；Fenton氧化；酚；含氮杂环化合物；GC-MS 文章编号： 中图分类号： 文献标识码（A） Removal of Major Organic Pollutants in Coking Wastewater by Pre-treatment with Fenton Oxidation XIE Cheng1, YAN Bo1, WEI Chaohai1, WU Chaofei1, REN Yuan1，LIU Xianqing2 College of Environmental Science and Engineering, South China University of Technology, 510640, Guangzhou, Guangdong, P.R.China Guangdong Shaoguan Steel Ltd. , 512123, Shaoguan, Guangdong, P.R.China Received ; Revised ; Accepted Abstract: On the based of studying the Effects of H2O2 dosage and reaction time on the COD removal and volatile phenol removal in Fenton oxidation, relationship between toxic and refractory organic concentration and reaction time was investigated especially. By GC-MS, removal of hydroxybenzene, benzene homologues, petroleum hydrocarbon, nitrogen heterocyclic compounds and PAHs reached 93.7％, 96.2％, 92.1％, 92.7％ and 89.2％ respectively at 30℃ for 10 min when H2O2 dosage was 0.5 times of the stoichiometry value and n (Fe2+)∶n (H2O2) = 1∶20 . In the condition, Removal of COD and volatile phenol were 54.4% and 98.6%. The results showed it not only got high removal of COD and volatile phenol, but also decomposed toxic and refractory organic into many kinds of alcohol, ketone, aldehyde, organic acid compound and other intermediates which were easily degraded by Biodegradation. Key Words: Coking Wastewater; Fenton Oxidation; hydroxybenzene; Nitrogen heterocyclic compounds; GC-MS 1. 引