文献类型：期刊文献

中文题名：城市生活污水生化出水中有机物的臭氧氧化特性

英文题名：Removal of Dissolved Organic Matters of Biologically Treated Municipal Wastewater Effluent During Ozonation

作者：龚剑丽[1];刘勇弟[1];孙贤波[1];何伟聪[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237

年份：2008

卷号：34

期号：3

起止页码：373

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：20083011399766);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：高等学校博士学科点专项科研基金资助(20060251014)

语种：中文

中文关键词：生化出水;有机物分类;氧化特性;O3

外文关键词：biotreated effluent; DOM fractionation;oxidative characteristics;O3

摘要：考察了O3法对城市生活污水生化出水中溶解性有机物的去除效果以及二级出水中各类有机污染物的氧化特性。实验结果表明:O3法对于城市污水二级生化出水的UV254值具有较高的去除效率,20 min内即可达57.1%的去除率,COD去除速率较慢,150 min时去除率为62.5%,而DOC去除效果很差,150 min的去除率仅为36.1%。经氧化处理后,疏水性物质的浓度明显下降,其中非酸疏水物质则基本被氧化完全,而亲水性物质氧化效果很差。水中各类有机物的组成发生明显变化。对不同的有机物而言,其氧化去除速率为疏水性物质>弱疏水物质>亲水性物质。
Batch reactor ozonation experiments were performed on the biologically treated secondary effluent of a municipal wastewater treatment plant to study the removal of its dissolved organic matters （DOM）, in terms of COD, DOC and UV254, and the oxidative characteristics of the four DOM fractions. The ozone oxidation effectively lowered UV254 level of the secondary effluent, achieving 57.1% reduction in 20 minutes; the COD removal was less effective （62.5% reduction in 150 rain） and that the DOC removal was the least effective （36.1% reduction in 150 min）. Ozonation removed most hydrophobic DOM constituents, especially the non-acid hydrophobias; however, it was not effective for removing many hydrophilic constituents. Among the four DOM fractions, the non-acidic hydrophobic fraction was most readily oxidized by ozone, followed by the acidic hydrophobic, the transphilic and the hydrophilic fractions.