| NaClO、UV及UV/NaClO消毒过程中TCC的去除特性及遗传毒性 |
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| 引用本文： | 陆保松,马晓雁,李青松,骆靖宇,沈奇奇,廖杰,廖文超,陈国元,李国新. NaClO、UV及UV/NaClO消毒过程中TCC的去除特性及遗传毒性[J]. 中国环境科学, 2018, 38(5): 1752-1759 |
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| 作者姓名： | 陆保松 马晓雁 李青松 骆靖宇 沈奇奇 廖杰 廖文超 陈国元 李国新 |
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| 作者单位： | 1. 浙江工业大学建筑工程学院, 浙江 杭州 310014;2. 厦门理工学院水资源环境研究所, 福建 厦门 361005;3. 苏州科技大学环境科学与工程学院, 江苏 苏州 215009;4. 浙江海洋大学, 国家海洋设施养殖工程技术与研究中心, 浙江 舟山 316000 |
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| 基金项目： | 国家自然科学基金资助项目（51378446，51678527，51408518）；福建省科技计划引导性项目（2017Y0079）；福建省高校新世纪优秀人才支持计划项目（JA14227）；福建省自然科学基金资助项目（2017J01491）；福建省中青年教师教育科研项目（JAT170412）；厦门市科技局项目（3502Z20131157，3502Z20150051） |
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| 摘 要： | 采用NaClO、UV和UV/NaClO复合消毒等方式研究了三氯卡班（TCC）在消毒过程中的去除特性，考察了3种消毒方式中TCC溶液的遗传毒性变化，鉴定了TCC的降解产物并探讨了其降解机制，以UV/NaClO复合消毒为研究对象，考察了NaClO投加量、TCC初始浓度、溶液pH值和腐殖酸（HA）等因素对TCC去除的影响.结果表明，3种消毒技术对TCC的去除效果依次为UV/NaClO、UV、NaClO.消毒处理不同程度增加了TCC溶液的遗传毒性.LC-MS鉴定出了8种TCC的降解产物，降解途径主要为脱氯、加氯以及·OH/O·氧化.UV/NaClO复合消毒对TCC的去除率在97%以上；TCC的去除与其初始浓度呈负相关；TCC的去除率随pH值的增大先升高后降低；低浓度的腐殖酸（HA）对TCC的去除有促进作用，高浓度则相反.
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| 关 键 词： | 三氯卡班 消毒 去除 产物 遗传毒性 |
| 收稿时间： | 2017-09-29 |
Study on the removal characteristics and genotoxicity of trichlorocarban during disinfections by NaClO,UV and UV/NaClO |
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| LU Bao-song,MA Xiao-yan,LI Qing-song,LUO Jing-yu,SHEN Qi-qi,LIAO Jie,LIAO Wen-chao,CHEN Guo-yuan,LI Guo-xin. Study on the removal characteristics and genotoxicity of trichlorocarban during disinfections by NaClO,UV and UV/NaClO[J]. China Environmental Science, 2018, 38(5): 1752-1759 |
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| Authors: | LU Bao-song MA Xiao-yan LI Qing-song LUO Jing-yu SHEN Qi-qi LIAO Jie LIAO Wen-chao CHEN Guo-yuan LI Guo-xin |
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| Affiliation: | 1. College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China;2. Water Resource and Environment Institute, Xiamen University of Technology, Xiamen 361005, China;3. School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;4. National Engineering Reseach Center For Marine Aqaculture, Zhejiang Ocean University, Zhoushan 316000, China |
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| Abstract: | The removal characteristics of trichlorocarban (TCC) during disinfections were studied by NaClO, UV and UV/NaClO combined disinfection. The genetic toxicity of TCC solution in three disinfection technologies was also investigated. Furthermore, the degradation products were identified and the degradation mechanism of TCC was discussed. The effects of several factors such as NaClO dosage, TCC initial concentration, pH value and humic acid (HA) on TCC removal were studied during UV/NaClO combined disinfection. The results showed that the removal efficiency of TCC was in the order:UV/NaClO, UV, NaClO, and the genetic toxicity of TCC solution was increased by disinfection treatment to varying degrees. Eight kinds of TCC degradation products were identified by LC-MS. The main degradation pathways were dechlorination, chlorination, and ·OH/O· oxidating. The removal rate of TCC by UV/NaClO combined disinfection was more than 97%; The removal of TCC was negatively correlated with its initial concentration; The removal rate of TCC increased firstly and then decreased with the increase of pH;Low concentration of humic acid (HA) contributed to the removal of TCC, whereas high. |
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| Keywords: | triclocarban disinfection removal products genetic toxicity |
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