2015-2020年宁夏农村学校饮用水菌落总数和氟化物指标分析  

Analysis of drinking water bacterial count and fluoride indicators in rural schools in Ningxia from 2015 to 2020

作　　者：刘凤莲[1] 闫芳 杨明 LIU Feng-lian;YAN Fang;YANG Ming(Environmental Hygiene Department,Ningxia Hui Autonomous Region Center for Disease Control and Prevention,Yinchuan,Ningxia 750004,China)

机构地区：[1]宁夏回族自治区疾病预防控制中心环境卫生科,宁夏银川750004

出　　处：《现代预防医学》2021年第12期2286-2290,共5页Modern Preventive Medicine

摘　　要：目的分析2015—2020年宁夏农村学校生活饮用水水质主要超标指标菌落总数和氟化物变化趋势,为提高宁夏回族自治区农村学校饮用水水质及卫生防护提供科学依据。方法对2015—2020年宁夏农村学校生活饮用水菌落总数和氟化物结果分析及评价。结果2015—2020年共采集农村学校饮用水885份,菌落总数和氟化物总体合格率分别为91.64%和88.47%,连续6年水质菌落总数和氟化物合格率分别由85.80%提升到97.56%和87.04%提升到94.31%;2015—2020年不同区域北部平原、中部干旱带、南部山区菌落总数总体合格率分别为94.03%、90.73%和87.50%,氟化物总体合格率分别为86.63%、94.70%和87.50%,2015—2020年地下水菌落总数和氟化物总体合格率分别为92.85%和85.99%;地表水菌落总数和氟化物总体合格率分别为88.16%和95.17%。结论宁夏农村学校饮用水水质菌落总数和氟化物合格率呈逐年上升趋势,说明农村学校饮用水水质状况正在逐步改善;地下深井水水质氟化物超标情况需要关注,要从水源选择和水处理技术等方面改善学校饮水安全。Objective To analyze the variation trend of the total number of bacteria and fluoride of the main indicators of drinking water quality exceeding the standard in rural schools in Ningxia during 2015 and 2020,and to provide scientific basis for improving the drinking water quality and health protection in rural schools in Ningxia Hui Autonomous Region.Methods The total numbers of bacterial colonies and fluoride in drinking water of rural schools in Ningxia from 2015 to 2020 were evaluated.Results From 2015 to 2020,a total of 885 samples of drinking water were collected from rural schools,and the overall passing rates of total bacterial colony and fluoride were 91.64%and 88.47%respectively,and the passing rates of total bacterial colony and fluoride of water quality increased from 85.80%to 97.56%and 87.04%to 94.31%respectively in 6 consecutive years;from 2015-2020 the overall qualified rate of total bacterial colony in different regions of the northern plain,central arid zone and southern mountainous area were 94.03%,90.73%and 87.50%respectively,and the overall qualified rate of fluoride were 86.63%,94.70%and 87.50%respectively.In 2015-2020 the groundwater colony total and fluoride overall qualified rates were 92.85%and 85.99%,respectively,and surface water colony and fluoride overall qualified rates were of 88.16%and 95.17%,respectively.Conclusion Ningxia rural school drinking water quality bacteriological colony total and fluoride pass rate is increasing year by year,indicating that the rural school drinking water quality is gradually improving.Deep underground well water quality fluoride exceeds the standard situation,which needs to be concerned about.Drinking water safety improvement can be carried out in terms of water source selection and water treatment technology.

关 键 词：饮用水 菌落总数 氟化物 分析 

分 类 号：R123.1[医药卫生—环境卫生学]