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论文中文题名:

 零价铁/类芬顿/过氧化氢法处理奥克托今炸药废水的研究    

姓名:

 马艳红    

学号:

 201111543    

保密级别:

 公开    

学科代码:

 083002    

学科名称:

 环境工程    

学生类型:

 工程硕士    

学位年度:

 2014    

院系:

 地质与环境学院    

专业:

 环境工程    

第一导师姓名:

 王铮    

第一导师单位:

 西安科技大学 地质与环境学院    

第二导师姓名:

 陈智群    

论文外文题名:

 Study of Removal HMX from Explosives Wastewater by Zero-valent Iron / Class Fenton/ H2O2    

论文中文关键词:

 零价铁 ; 过氧化氢 ; 奥克托今 ; 降解    

论文外文关键词:

 Zero-valent Iron ; H2O2 ; HMX ; Degradation    

论文中文摘要:
火炸药是全世界一种重要的化学能源,由于它们的能量密度高、瞬间功率大等特点而被广泛运用于军事上、民用爆破工程等领域。但制造炸药的原料和中间产物含有大量有毒有害的难降解有机物质,这种物质很难有效地被常规污水处理方法所降解。 Fe0及Fe0+H2O2作为一种高级氧化技术用于难降解有机物的处理而被广泛研究,特别是Fe0在地下水及土壤修复中的良好表现,使Fe0法成为当前国内外研究热点。本课题以HMX模拟配水为对象,分别采用Fe0+H2O2法、Fe0法、H2O2法去除水中HMX的含量。通过实验得到三种方法的最佳工艺参数,并对其反应动力学、及反应产物进行了初步的探讨。主要结论如下: 初始pH=3的20ml水样中,加入0.12m1的H2O2和0.5g铁粉,Fe0+H2O2法对HMX的去除率达到75.75%。初始pH=3的水样中,加入0.5g铁粉,Fe0法对HMX的去除率达到69.29%。初始pH=3的水样中加入0.12m1的H2O2,H2O2法对对HMX的去除率达到的21.93%。Fe0+H2O2法比Fe0法的去除效率高6.46%,比H2O2法高出53.82%。对HMX的去除效果来说,Fe0+H2O2法的去除效果最好。 三种方法对HMX的去除反应都属于准一级反应动力学。通过对两个体系中铁离子测定对比,发现在Fe0+H2O2体系中铁粉的作用没有完全得到利用,使HMX的降解收到了一定的限制。 通过对Fe0+H2O2法及Fe0法处理水样分析发现HMX降解转变成易降解的小分子物质。Fe0+H2O2体系中的最终产物包括CO2、NO3-、N2以及C-N直链物质;Fe0体系的最终产物包括HCOH、NH2NH2、N2O以及C-N直链物质。 Fe0+H2O2法、Fe0法在炸药废水的处理中效果是比较好的,可以作为炸药废水的预处理过程,可以为后续的处理降解有毒有害的难降解大分子化合物,减少炸药废水对生物处理中微生物的毒害。
论文外文摘要:
Explosive is an important chemical energy around the world, due to their high energy density, large instantaneous power and other characteristics, so it is widely used in military and civilian blasting and other fields. However, the materials of manufacture of explosives and intermediate products contain large amounts of toxic and hazardous organic substance that is difficult to be effectively degraded by conventional wastewater treatment methods. Zero valent iron and zero valent iron combined H2O2 as an advanced oxidation technology for treatmenting of refractory organics have been studied extensively, especially ZVI’s good performance in the groundwater and soil remediation, so ZVI become the focus in the world. The paper is removal HMX from simulate water distribution HMX object by methods of zero-valent iron combined H2O2, zero valent iron, H2O2, respectively.That can obtain optimal parameters and its reaction kinetics. In the system of ZVI combined H2O2 that the highest removal efficiency appeared at the condition of pH=3.0, 0.12ml H2O2 and 0.5g ZVI in 20ml wastewater.The removal is 75.75%. In the system of ZVI that the highest removal efficiency appeared at the condition of pH=3.0 and 0.5g ZVI in 20ml wastewater.The removal is 69.29%. In the system of H2O2 that the highest removal efficiency appeared at the condition of pH=3.0 and 0.12ml H2O2 in 20ml wastewater.The removal is 21.93%. Zero-valent iron combined H2O2 system’s removal efficiency of HMX is higher 6.46% than zero-valent iron system, and higher 53.82% than hydrogen peroxide system. For removal efficiency of HMX, the ZVI combined H2O2 is the best method. HMX’s reduction follows pseudo first order kinetics in three methods. Contrast of the two methods of ZVI combined H2O2 and ZVI found that the role of iron is not fully utilized, so that the degradation of HMX received a certain limit. Study of the wastewater of process of ZVI combined H2O2 and ZVI found that HMX which is organic matter degradated to small molecules that are easily degradable. The end products of ZVI combined H2O2 system are CO2、NO3-、N2 and C-N linear products. The end products of ZVI system are HCOH、NH2NH2、N2O and C-N linear products. The removal efficiency of HMX is not bad using two methods of ZVI and ZVI combined hydrogen peroxide.They can be used as protreatment of explosives wastewater, and it is better for subsequent processing that can degrade toxic and hazardous biodegradable macromolecular compound.
中图分类号:

 X703    

开放日期:

 2014-06-12    

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