臭氧活性炭去除水中硫醇类致嗅物质的研究  

Removal of thiol compounds from drinking water with ozone-activated carbon

作　　者：李勇[1] 张晓健[1] 陈超[1] 张晓慧[2] 朱晓辉[2] 戴吉胜 许欢 

机构地区：[1]清华大学环境科学与工程系,北京100084 [2]兰州交通大学环境与市政工程学院,兰州730070 [3]东江水务有限公司,东莞523112

出　　处：《清华大学学报（自然科学版）》2009年第3期390-392,共3页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(50778097)

摘　　要：硫醇类物质是南方某江排洪时饮用水中嗅味的主要致嗅物质。以乙硫醇为典型致嗅物质,研究了臭氧活性炭对乙硫醇的去除特性。结果表明,臭氧活性炭对乙硫醇有很好的去除效果,其中臭氧氧化是去除乙硫醇的关键工艺,活性炭发挥的作用有限;去除乙硫醇嗅味的适宜臭氧接触时间是15min,当水质变化不大时,完全氧化水中乙硫醇所需要的有效臭氧投加量(m g/L)为乙硫醇初始浓度(μg/L)的0.04倍。当进水乙硫醇浓度大于100μg/L时,需要增加适宜的预氧化处理,与臭氧活性炭联用才能有效去除水中硫醇类致嗅物质产生的嗅味。Thiol compounds are the main sources of odor in rivers in southern China. The removal of thiol compounds from drinking water using ozone-activated carbon was studied using ethanethiol as a typical thiol compound. The results show that the ozone-activated carbon can effectively remove ethanethiol with the key process to remove thiol being the ozonation. Activated carbon was not effective in removing the odors caused by thiol compounds. The ethanethiol removal during ozonation required 15 min. When water characters were similar, the ozone dose （mg/L） to completely oxidize the ethanethiol in water was 0.04 times the initial ethanethiol concentration （μg/L）. Thus, when the ethanethiol concentration in a flow stream is more than 100 μg/L, pre-oxidation should be used with ozone-activated carbon to remove the odor caused by the ethanethiol.

关 键 词：嗅味 乙硫醇 臭氧-活性炭 

分 类 号：TU991.21[建筑科学—市政工程] X522[环境科学与工程—环境工程]