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氯对模拟管壁生物膜的氧化特性研究
引用本文:张永吉,周玲玲,李伟英,李星,李德强,李圭白. 氯对模拟管壁生物膜的氧化特性研究[J]. 环境科学, 2009, 30(5): 1381-1385
作者姓名:张永吉  周玲玲  李伟英  李星  李德强  李圭白
作者单位:同济大学污染控制与资源化研究国家重点实验室,上海,200092;哈尔滨工业大学市政环境工程学院,哈尔滨,150090;北京工业大学建筑工程学院,北京,100022;中国市政工程华北设计研究院,天津,300074
基金项目:国家自然科学基金项目(50878164);“十一五”国家科技支撑计划项目(2006BAJ08B02,2006BAJ08B06)
摘    要:以载片上培养的大肠杆菌生物膜为对象,研究了氯对模拟管壁生物膜中大肠杆菌的灭活效果,同时考察氯氧化生物膜后水中生物可同化有机碳(AOC)、生物可利用磷(MAP)和细菌生长潜能(BRP)的变化情况.结果表明,氯可以有效灭活悬浮态的大肠杆菌,而对生物膜中的大肠杆菌的灭活效率远低于悬浮菌;在相同CT值下,较高浓度的氯对悬浮态和生物膜中大肠杆菌的灭活效果要高于低浓度的氯.氯对生物膜的氧化作用会使生物膜中物质溶出,增加了水中AOC和MAP浓度,如当氯的浓度为1.0 mg/L(CT值为100 mg·min/L)时,水中AOC由20.78 μg/L增加到120.17 μg/L,MAP含量由0.11 μg/L增加到0.17 μg/L;氯的氧化作用会增加水的细菌生长潜能(BRP),BRP随着CT值的增加而增加,如当氯投量为1.0 mg/L(CT值为100 mg·min/L)时,BRP可达到1.10×107 CFU/mL.

关 键 词:  生物膜  生物可同化有机碳  生物可利用磷  细菌生长潜能
收稿时间:2008-06-03
修稿时间:2008-11-18

Oxidization Characteristic of Chlorine on the Biofilm in Simulated Drinking Water Distribution System
ZHANG Yong-ji,ZHOU Ling-ling,LI Wei-ying,LI Xing,LI De-qiang and LI Gui-bai. Oxidization Characteristic of Chlorine on the Biofilm in Simulated Drinking Water Distribution System[J]. Chinese Journal of Environmental Science, 2009, 30(5): 1381-1385
Authors:ZHANG Yong-ji  ZHOU Ling-ling  LI Wei-ying  LI Xing  LI De-qiang  LI Gui-bai
Affiliation:1.State Key Laboratory of Pollution Control and Resources Reuse;Tongji University;Shanghai 200092;China;2.School of Municipal and Environmental Engineering;Harbin Institute of Technology;Harbin 150090;3.College of Architecture and Civil Engineering;Beijing University of Technology;Beijing 100022;4.North China Municipal Engineering Design and Research Institute;Tianjin 300074;China
Abstract:In the article,the inactivation effect of chlorine on E.coli biofilm and the influence of chlorine oxidization on the contents of assimilable organic carbon(AOC),microbially available phosphorus(MAP) and bacterial regrowth potential(BRP) was investigated in the simulated drinking water distribution system.Results showed that chlorine resulted in more efficient reduction on suspended E.coli than did in biofilm.The inactivation effect of E.coli was influenced by chlorine concentration.Likewise,higher chlorine...
Keywords:chlorine   biofilm   assimilable organic carbon (AOC)   microbially available phosphorus (MAP)   bacterial regrowth potential (BRP)
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