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SODIS消毒对耐药细菌灭活特性影响因素研究
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摘要
SODIS(Solar Water Disinfection)是适宜第三世界人民使用的一种低成本、易操作、环境友好的饮用水消毒方式。鉴于细菌耐药性现象在全球范围内的迅速发展,有必要探究SODIS对耐药细菌的去除效果。本文以氙灯光源、塑料瓶为试验材料,构建了SODIS灭活耐药细菌的试验方法,探究了SODIS消毒对耐药细菌的灭活特性。研究发现,SODIS对耐药细菌E.coli 10663,累积光辐照量达到2600kJ/m~2时(约6h阳光直射的累积辐照量),灭活率可达3-log;说明SODIS对耐药细菌具有明显消毒效果,同时,SODIS对细菌的灭活效果与细菌的耐药性没有明显关系。SODIS消毒效果随着反应时间的增加(即累积光辐照量的增加)而增强;初始浓度对SODIS对耐药细菌灭活效果具有显著影响,初始浓度越高,灭活率越低;同时,SODIS消毒对耐药细菌的灭活效果不能单纯以一种细菌的灭活效果来表示,菌种不同,灭活率也会不同;容器材料对灭活率有明显影响。
引文
[1]郭美婷,袁青彬,杨健.环境中抗药细菌及其抗药基因的研究进展.环境科学与技术,2012,35(11):87-92.
    [2]Huang J.J.,Hu H.Y.,Tang F.,et al.Inactivation and reactivation of antibiotic-resistant bacteria by chlorination in secondary effluents of a municipal wastewater treatment plant.Water Research,2011,45(9):2775-2781.
    [3]Rosenberg Goldstein R.E.,Micallef S.A.,Gibbs S.G.,et al.Detection of vancomycin-resistant enterococci(VRE)at four U.S.wastewater treatment plants that provide effluent for reuse.Science of the Total Environment,2014,466-467:404-411.
    [4]Conner-Kerr T.A.,Sullivan P.K.,Gaillard J.,et al.The effects of ultraviolet radiation on antibiotic-resistant bacteria in vitro.Ostomy Wound Manage,1998,44(10):50-56.
    [5]Macauley J.J.,Qiang Z.,Adams C.D.,et al.Disinfection of swine wastewater using chlorine,ultraviolet light and ozone.Water Research,2006,40(10):2017-2026.
    [6]Rizzo L.,Fiorentino A.,Anselmo A.Advanced treatment of urban wastewater by UV radiation:Effect on antibiotics and antibiotic-resistant E.coli strains.Chemosphere,2013,92(2):171-176.
    [7]Clasen T,Cairncross S,Haller L,et al.Cost-effectiveness of water quality interventions for preventing diarrhoeal disease in developing countries.Journal of Water and Health,2007,5(4):599-608.
    [8]Mcguigan K G,Conroy R,Mosler H,et al.Solar water disinfection(SODIS):a review from bench-top to rooftop[J].Journal of Hazardous Materials,2012.:608-615.
    [9]M.Wegelin,S.Canonica,K.Mechsner,T.Fleischmann,F.Pesaro,A.Metzler,Solar water disinfection:scope of the process and analysis of radiation experiments.Water SRT-Aqua,1994(43):154-169.
    [10]Sommer B,Marino A,Solarte Y,et al.SODIS-an emerging water treatment process.1997;127-137.
    [11]Sinton L W,Hall C H,Lynch P A,et al.Sunlight Inactivation of Fecal Indicator Bacteria and Bacteriophages from Waste Stabilization Pond Effluent in Fresh and Saline Waters.Applied and Environmental Microbiology,2002,68(3):1122-1131.
    [12]Fisher M B,Keenan C R,Nelson K L,et al.Speeding up solar disinfection(SODIS):effects of hydrogen peroxide,temperature,pH,and copper plus ascorbate on thephotoinactivation of E.coli.Journal of Water and Health,2008,6(1):35-51.
    [13]Oates P M,Shanahan P,Polz M F,et al.Solar disinfection(SODIS):simulation of solar radiation for global assessment and application for point-of-use water treatment in Haiti.Water Research,2003,37(1):47-54.
    [14]Rijal G,Fujioka R S.Use of reflectors to enhance the synergistic effects of solar heating and solar wavelengths to disinfect drinking water sources.Water Science and Technology,2003,48(11):481-488.
    [15]R.P.Sinha,D.P.Hader,UV-induced DNA damage and repair:a review,Photochem.Photobiol.Sci.2002,1:225-236.
    [16]Fisher M B,Iriarte M,Nelson K L,et al.Solar water disinfection(SODIS)of Escherichia coli,Enterococcus spp.,and MS2 coliphage:Effects of additives and alternative container materials.Water Research,2012,46(6):1745-1754.

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