饮水缓释消毒片杀灭水中大肠杆菌及控制细菌菌落总数的效果评价.pdfVIP

饮水缓释消毒片杀灭水中大肠杆菌及控制细菌菌落总数的效果评价 杨忠委，王华然，孙欣，尹静t 军事医学科学院卫生学环境医学研究所，天津市环境与食品安全风险监控技术重点实验室，天津，300050 摘要：目的评价实验室制备的新型饮水缓释消毒片杀灭水中大肠杆菌及控制菌落总数的效果，为实 际应用提供理论指导。方法有效氯的测定采用碘量法。利用悬液方式进行大肠杆菌及菌落总数杀灭控制 效果评价，并研究了pH、水温、色度等因素的影响。结果本试验中所用的的消毒片，当有效氯浓度达 色度对缓释消毒片杀灭水中大肠杆菌及控制菌落总数的效果没有显著影响。结论饮水缓释消毒片消毒后 水样能达到《生活饮用水卫生标准》(GB5749—2006)中微生物学指标的要求，为生活饮水的缓释消毒提 供了一种可能性。 关键字：饮水；缓释消毒片；大肠杆菌；茵落总数 STUDYoNTHEsterilizationtothetotalnumberof andbacteriaA efficiency E．coli ofnewSLoWEASE- TYPE FoR DISINFECTANTDRINl(INGⅥ，ATER YANG Zhong—wei，WANGHua-ran，SunXin，YINJing+ InstituteofHealthandEnvironmenml of Medical Medicine，AcademyMilitary Science(Tianjin300050，China) Abstract： To thesterilization ofanew slow-releasedisinfectanttototal Objeetstudy emciency style numberofE．coliand the would theoreticalfoundationfor water bacteria，andexperimentprovide drinking disinfecfion．MethodTheconcentrationofactivechlorinewasdeterminediodination．Thesterilization by tothetotalnumberofE．coliandbacteriawere theinfluenceof e伍ciency observed．including PH．water andchroma．Result黟西entheconcentrationofactivechlorinewasover and temperature 0．3mg／L OVer,the sterilizationwas affectedthefactorswestudied．ConclusionTheWaterdisinfectedthe ef!ficiencyhardly by by slow．releasedisinfectantcouldreachedthe whichisa microbiologicalquality get—setstipulation for it’Ssafefor water (GB5749—2006)．and drinkingquality)) drinking． water：slow