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题名	高级氧化技术及其组合工艺深度处理垃圾渗滤液
作者	夏鹏飞
学位类别	硕士
答辩日期	2010
授予单位	中国科学院研究生院
授予地点	北京
导师	赵旭 ; 曲久辉
关键词	光电氧化 Fenton氧化 强化混凝 垃圾渗滤液
中文摘要	垃圾渗滤液含有高浓度有机物、氨氮及多种金属离子，单独生化处理很难使出水达标排放。本文从光电氧化反应器研制、强化混凝与光电氧化组合工艺，以及NaClO强化混凝与Fenton氧化组合技术三方面，对生化后垃圾渗滤液的深度处理进行了研究，主要结果如下： 1．研制的光电氧化反应器可对生化后渗滤液进行有效处理。平衡处理效果与能耗，初步认为停留时间3 h，电流密度200 A/m2为较优反应条件，此时COD、NH4+-N和色度去除率分别为87%，99%和99%，且反应后渗滤液中仍有较高活性氯含量，可进一步利用。 2．铁锰复合氧化物与PACl混凝可发挥铁氧化物丰富的吸附位优势与锰化合物的氧化能力。混凝后渗滤液沉降性能好，浊度低，且呈酸性，有利于后续光电单元对难降解有机物的氧化。当铁锰氧化物投量为600 mg/L，PACl投量为100 mg/L时，混凝后渗滤液经过光电氧化(400 A/m2，UV 9 W)，氨氮与色度60分钟去除率为99%，反应180分钟后COD去除率可达76.8%。 3．NaClO强化Fe(Ⅱ)混凝与Fenton氧化组合工艺可有效去除COD与NH4+-N。当Fe2+投量为12.5 mmol/L, NaClO投量为10 mmol/L，COD和氨氮去除率分别达到56.5%和78.5%。将混凝后的水样进行Fenton氧化处理，取Fe2+/H2O2比例为1：8，Fe2+投量为40 mmol/L，相对于原水COD的去除率达到83.6%，色度的去除率达到99.5%，处理后水样无色透明。
英文摘要	Landfill leachate, which contains high concentrations of NH4+-N, COD, and heavy metals, can not be bio-treated individually to satisfy the discharge requirements. In this work, treatment of landfill leachate by photo-electrochemical oxidation, photo-electrochemical oxidation combined with enhanced coagulation, and Fenton oxidation coupled with NaClO enhanced coagulation was performed. 1. Landfill leachate can be efficiently treated by photo-electrochemical oxidation. Considering the performance and energy consumption, retention time and current density was selected as 6 h and 200 A/m2, respectively. Under this condition, the COD, NH4+-N, and color removal were determined to be 87%, 99%, and 99%, respectively. Residue active chlorine after photo-electrochemical oxidation can be further utilized. 2. The adsorption ability of Fe oxide and oxidation ability of Mn oxide can be expressed by Fe Mn composite oxide in treating landfill leachate. Combined with PACl coagulation, Landfill leachate pre-treated by coagulation has high sedimental ability, low turbidity and low pH, which facilitates further oxidation. When dosing Fe2+ 600 mg/L and PACl 100 mg/L, then photo-electrochemical oxidizing (400 A/m2，UV 9 W), 99% NH4+-N and Color removal can be achieved after being treated within 60 min, and 76.8% COD removal can be achieved after being treated within 180 min. 3. Fenton oxidation combined NaClO enhanced Fe(Ⅱ) coagulation can efficiently remove COD and NH4+-N. When dosing Fe2+ 12.5 mmol/L, NaClO 10 mmol/L, COD and NH4+-N removal can be 56.5% and 78.5%, respectively. After being oxidized by Fenton process (Fe2+ : H2O2 = 1:8, Fe2+ 40 mmol/L), COD removal was 83.6% and color removal was 99%.
内容类型	学位论文
源URL	[http://ir.rcees.ac.cn/handle/311016/35027]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	夏鹏飞. 高级氧化技术及其组合工艺深度处理垃圾渗滤液[D]. 北京. 中国科学院研究生院. 2010.

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