摘要
目的:掌握重庆市江津区饮用水供水现状,为改善饮用水水质、保障饮用水安全提供依据。方法:研究资料来源于2021年重庆市江津区开展的城乡饮用水水质监测及供水单位卫生学调查结果。水质监测按照城市全覆盖、农村分层抽样的原则确定监测点,调查分别于枯水期(1月)和丰水期(6月)各进行1次水样采集及检测工作。结果:共监测供水工程43个,水源以地表水为主,占97.67%;供水能力以大型供水工程(≥1000 m^(3)/d)为主,占60.47%;水处理工艺以完全处理工艺为主,占93.02%。共检测水样212份,合格129份,合格率为60.84%。枯水期与丰水期、出厂水与末梢水水样合格率比较,差异无统计学意义(P>0.05)。供水能力≥5000 m^(3)/d的供水工程水样合格率最高,为90.00%;不同供水能力的供水工程水样合格率比较,差异有统计学意义(χ^(2)=69.441,P<0.05)。城市监测点水样合格率最高,为98.15%;城市水样合格率高于乡镇,乡镇高于村级。完全处理工艺水样合格率明显高于其他类型,按要求使用消毒设施的供水单位水样合格率高于偶尔使用和不使用消毒设施单位的合格率。在检测的34项指标中,浑浊度、肉眼可见物、亚氯酸盐、氯酸盐、三氯甲烷、菌落总数、总大肠菌群、大肠埃希氏菌等8项指标存在超标情况,其余指标合格率均为100.00%。结论:2021年重庆市江津区饮用水水样合格率较低,水质有待提高,主要受微生物及浑浊度的影响。
OBJECTIVE Grasp the current situation of drinking water supply in Jiangjin District of Chongqing,to provide a basis for improving drinking water quality and ensuring drinking water safety.METHODS It carried out urban and rural drinking water quality monitoring and hygienic investigation of water supply units in Jiangjin district in 2021.RESULTS Monitoring 43 water supply projects,the water source was mainly surface water,accounting for 97.67%.The water supply capacity was mainly large-scale water supply projects,accounting for 60.47%.The water treatment process was mainly complete treatment,accounting for 93.02%.A total of 212 water samples were tested,129 of which were qualified,with a qualified rate of 60.84%.There was no significant difference in the qualified rate between dry season and wet season,factory water and terminal water(P>0.05).There was significant difference in the qualified rate of water quality among different water supply capacity(P>0.05),qualified rate of urban monitoring points>Township>Village.The qualified rate of water quality of complete treatment process was significantly higher than that of other types,the qualified rate of using disinfection facilities as required was higher than that of occasionally using and not using disinfection facilities.Turbidity,visible matter,chlorite,chlorate,chloroform,total bacterial count,total coliform and Escherichia coli exceed the standard,and the qualified rate of other indicators was 100.00%.CONCLUSION In 2021,the qualified rate of drinking water samples in Jiangjin district of Chongqing is relatively low,and the water quality needs to be improved,mainly affected by microorganisms and turbidity.
作者
廖茜茜
张凯
LIAO Qian-qian;ZHANG Kai(Jiangjin District Center for Disease Control and Prevention,Chongqing,402260,China)
出处
《中国初级卫生保健》
2022年第12期90-93,共4页
Chinese Primary Health Care
关键词
饮用水
水质
监测
分析
drinking water
water quality
monitor
analysis
