[1]赵光宇,吕锡武.饮用水中有机氯化物高级氧化工艺去除特点及机理分析[J].东南大学学报(自然科学版),2011,41(2):406-410.[doi:10.3969/j.issn.1001-0505.2011.02.036]
 Zhao Guangyu,Lü Xiwu.Removal characters and mechanism of organic chloride in drinking water by advanced oxidation processes[J].Journal of Southeast University (Natural Science Edition),2011,41(2):406-410.[doi:10.3969/j.issn.1001-0505.2011.02.036]
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饮用水中有机氯化物高级氧化工艺去除特点及机理分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第2期
页码:
406-410
栏目:
土木工程
出版日期:
2011-03-20

文章信息/Info

Title:
Removal characters and mechanism of organic chloride in drinking water by advanced oxidation processes
作者:
赵光宇吕锡武
(东南大学能源与环境学院,南京 210096)
Author(s):
Zhao GuangyuLü Xiwu
(School of Energy and Environment, Southeast University, Nanjing 210096, China)
关键词:
有机氯化物羟自由基紫外辐射激发态
Keywords:
organic chloride hydroxyl radical ultraviolet radiation excited state.
分类号:
TU991.2
DOI:
10.3969/j.issn.1001-0505.2011.02.036
摘要:
采用O3,UV,UV/空气和UV/O3工艺对三氯甲烷和氯苯2种重要氯化物的去除效果进行了比较,并就UV/O3工艺对2种有机物去除机理展开分析.试验90min时,UV(253.7nm)工艺氯苯分解产物氯离子浓度为2.03mg/L,UV(253.7nm)/O3工艺为1.80mg/L,150min时二者分别为2.28和2.48mg/L; 不同初始浓度下,UV/O3工艺在2h内对三氯甲烷的去除率均高于60%; 2种试验条件下,UV/O3工艺对三氯甲烷去除率分别为55.6%和56.1%,UV/空气工艺则分别达到了48.9%和53.8%; UV/空气工艺静态试验中,随着三氯甲烷的去除,水中溶解氧浓度从初始的7.25mg/L降低为1.28mg/L.试验结果表明,UV/O3工艺去除有机物机理较为复杂,与目标有机物自身性质密切相关.
Abstract:
A comprehensive comparison of degradation of chlorobenzene and trichloromethane by means of ozone (O3), ultraviolet radiation (UV), aeration plus UV and the combination of ozone with UV was conducted. Further work on the mechanism of applying UV/O3 method for removing these two organics was also carried out. The concentration of Cl-as a decomposed product of chlorobenzene was determined. It is shown that after 90min, the concentration are 2. 03mg/L for UV(253. 7nm) and 1. 80mg/L with UV(253. 7nm)/O3, and after 150min are 2. 28mg/L and 2. 48mg/L at 150min respectively. The removal ratio registered by UV/O3 is always more than 60% within 2h at different initial concentration of trichloromethane. Under two kinds of conditions the degradation rates with UV/O3 are 55. 6% and 56. 1%, and 48. 9% and 53. 8% with UV/aeration, respectively. DO decreases from 7. 25mg/L to 1. 28mg/L with the disappearance of trichloromethane in static experiment. It can be concluded that the characters of target organic have significant influence on removal rate by UV/O3, and the removal mechanism is relatively complicated.

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备注/Memo

备注/Memo:
作者简介:赵光宇(1986—),男,博士生;吕锡武(联系人),男,博士,教授,博士生导师,xiwulu@seu.edu.cn.
基金项目:国家水体污染控制与治理科技重大专项资助项目(2008ZX07421-004).
引文格式: 赵光宇,吕锡武.饮用水中有机氯化物高级氧化工艺去除特点及机理分析[J].东南大学学报:自然科学版,2011,41(2):406-410.[doi:10.3969/j.issn.1001-0505.2011.02.036]
更新日期/Last Update: 2011-03-20