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论文中文题名:

 UV/Fenton试剂处理有机磷农药废水实验研究    

姓名:

 金于涛    

学号:

 20070477    

保密级别:

 公开    

学科代码:

 083001    

学科名称:

 环境科学    

学生类型:

 硕士    

学位年度:

 2010    

院系:

 地质与环境学院    

专业:

 环境科学    

第一导师姓名:

 王英    

论文外文题名:

 UV/Fenton Reagent Processing Ganophosphorus Agricultural Chemicals Wastewater Experimental Study    

论文中文关键词:

 Fenton ; UV/Fenton ; 有机磷 ; 农药废水    

论文外文关键词:

 Fenton UV/Fenton Ganophosphorus Pesticide Wastewater    

论文中文摘要:
有机磷农药废水COD值高、毒性大、可生化性差、组分复杂,排放前必须进行有效处理。目前,处理机磷农药废水的方法主要有生化法及其吸附、水解、混凝沉淀等预处理方法,常规化学氧化法、超临界水氧化、电化学氧化、光催化降解法等化学法,物理法和超声波法等处理方法,但处理效果都不佳。Fenton法是一种高级化学氧化法,常用于难降解有机物的处理,用以去除废水中的COD、色度和泡沫等。Fenton氧化法具有反应速度快、降解效率高、使用范围广等优点。 本文以洛阳某农药厂的车间废水为研究对象,通过Fenton试剂处理有机磷农药废水的各种影响因素研究发现,溶液的pH值、FeSO4?7H2O的投加量、H2O2的投加量和投加方式、反应时间是影响试剂氧化反应的因素。 通过研究UV/Fenton试剂处理有机磷农药废水,发现在体系中引入紫外光可以提高废水的COD去除率,加快反应速度,缩短反应时间,且H2O2的投加量较单纯的Fenton氧化反应要少30%左右;当紫外光光照强度1600μw/cm3以上,COD去除率显著提高,光照120min后,COD去除率达到95%以上,与暗光(0μw/cm3)相比,COD去除率提高了3倍以上;研究还发现,有机磷农药废水对紫外光的有选择吸收,但选择吸收紫外光的最大波长不明显,波长范围为240~300nm的紫外光对有机磷农药废水的COD去除率都有提高。 通过对Fenton体系产生羟基自由基的影响因素研究发现:Fenton体系中H2O2浓度、FeSO4浓度、pH值对羟基自由基?OH的生成均有较大影响。
论文外文摘要:
The ganophosphorus agricultural chemicals waste water COD value is high, the toxicity big, may the biochemistry difference, the component be complex, before the emissions, must carry on effective processing. At present, processor phosphorus agricultural chemicals waste water method mainly since birth pretreatment methods and so on reduction and adsorption, hydrolisis, coagulation precipitation, conventional chemistry oxo-process, supercritical water oxidation, electrochemistry oxidation, photochemical catalysis degeneration law equalization research method, processing methods and so on physical law and ultrasonic wave law. The Fenton law is one high-level chemistry oxo-process, in difficult to degrade the organic matter commonly used processing, with removes in the waste water COD, the chromaticity and the froth and so on. The Fenton oxo-process has the reaction rate to be quick, the degeneration efficiency is high, use scope broad and so on merits. This article take the Luoyang some insecticide factory's workshop waste water as the object of study, through Fenton reagent processing ganophosphorus agricultural chemicals waste water each kind of influencing factor research discovery, solution pH value, FeSO4?7H2O throws the increment, H2O2 to throw the increment and to throw the Canada side type, the reaction time is affects the reagent oxidizing reaction the factor. By studying the UV / Fenton reagent organophosphorus pesticides found in the system, the introduction of UV light can improve the wastewater COD removal efficiency, accelerate the reaction rate, shorten the reaction time, and the dosage of H2O2 in the Fenton oxidation reaction than simply less 30%; when the UV light intensity 1600μw/cm3 above, COD removal rate increased significantly after the light 120min, COD removal efficiency of more than 95%, and low light (0μw/cm3) compared to, COD removal rate 3 times; study also found that organophosphorus pesticides on the selective absorption of ultraviolet light, but choose the maximum UV absorption wavelength is not obvious, the wavelength range 240 ~ 300nm in the UV to the organic phosphorus pesticide wastewater COD removal rates have increased. Through has the hydroxyl free radical dynamics research to the Fenton system to discover: In Fenton system H2O2 density, FeSO4 density, pH value to hydroxyl free radical The ?OH production has affects greatly.
中图分类号:

 1 绪论 1    

开放日期:

 2011-04-25    

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