饮用水中异嗅化合物的来源、形成及控制

项目名称： 饮用水中异嗅化合物的来源、形成及控制

项目编号： No.21277175

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 环境科学、安全科学

项目作者： 杨兆光

作者单位： 中南大学

项目金额： 80万元

中文摘要： 人类活动使得氮磷等营养物质大量进入水体，引发藻类及其他浮游生物迅速繁殖，异嗅问题凸显。作为"城市生命之源"的自来水，其异嗅的消除成为目前国际上饮用水领域中的一个崭新课题。项目采用感官分析中的嗅味层次分析法与先进的仪器检测技术相结合，在建立精准超痕量异嗅化合物检测体系基础上，通过对源水、自来水处理及输配系统的监测和异嗅化合物形成的研究，意图揭示异嗅化合物的形成机理、确定自来水异嗅的来源，结合异嗅化合物的自然衰减过程研究，由此形成自来水异嗅问题的控制方案和技术。所开展的异嗅化合物生成动力学、热力学研究不仅在机理上有助于增进人们对自来水异嗅问题的认识，项目建立的分析方法也可为饮用水的安全性预警提供快速有效的手段，为饮用水监测、防治及有机污染物系统分析标准方法的制定提供可靠依据，研究结果对于解决自来水异嗅问题、提高政府机构的公信力、保证民众饮用水的安全洁净更是具有重要的现实意义和可期的实用价值。

中文关键词： 异嗅化合物；去除技术；臭氧氧化；紫外光氧化；活性炭吸附

英文摘要： The nitrogen and phosphorus nutrition, largely induced into water body through modern human activities, usually results in a fast growth of alga and other plankton, and consequently causes a more and more offensive odor in water. Which has threatened the tap water safety that is known as the source of lives in city.Thus, the control of the presence of off-flavor compounds that can compromise the aesthetic qualities of the water supply is becoming a brand-new issue in the international research of drinking water. This proposed project represents the first effort to identify the origin, occurrence and fate of off-flavor compounds in water supply system. To study the off-flavor compounds, flavor profile analysis and advanced instrument analysis will be unitely adopted, and sensitive analytical methods for quantifying the trace compounds will be developed and validated. Then, the method will be applied to track the occurrence of the compounds in water source and water supply system. The removal efficiency of water treatment processes will be evaluated and assessed. For compounds that are present frequently at concentrations above their odor thresholds, their sources and potential for formation within the treatment plant will be determined, and their natural attenuation will be assessed as well. Consequently, a compo

英文关键词： Taste and odor；removal；ozonation；UV oxidation；Activated carbon adsorption