摘要
目的了解廊坊市生活饮用水水质卫生现状,及时发现问题,以便有针对性的采取措施,防范生活饮用水污染事件的发生,保障人民群众的饮水卫生安全。方法全市市级和11个区、县按照城市集中式供水、乡镇集中式供水、学校自建集中式供水、二次供水、现制现售水分类,在各类中按照50%的比例随机抽取供水单位开展卫生调查和水质检测和分析。结果共检测水样123份,合格96份,合格率78.05%。其中,城市集中供水合格率为66.66%,乡镇集中供水合格率为68.18%,学校自建供水合格率为63.64%,二次供水合格率为88.24%,现制现售水合格率为92.00%。经统计学处理,城市集中式供水与乡镇集中式供水水质合格率的差异无统计学意义(χ~2=0.007 9,P>0.05),集中式供水与二次供水单位水质合格率的差异有统计学意义(χ~2=5.18,P<0.05),集中式供水与现制现售水水质合格率的差异有统计学意义(χ~2=5.78,P<0.05)。检测不合格指标为氟化物、p H值、消毒剂余量、菌落总数、浑浊度、肉眼可见物。结论从饮用水水质检测结果分析看,廊坊市饮用水水质状况不容乐观,应加强改水降氟、饮用水安全工程监督指导、强化水质监测是提高生活饮用水水质的关键。
[Objective]To understand the hygienic status of drinking water in Langfang City,identify problems in time,so as to take the targeted measures,prevent the drinking water pollution event,and ensure the safety of drinking water. [Methods]According to the types of the municipal centralized water supply,township centralized water supply,school self-built centralized water supply,secondary water supply and fresh-purified drinkingwater,the water supply units from urban area and 11 districts/counties of Langfang City were randomly collected in accordance with the proportion of 50% from each type,to perform the health survey,as well as water quality detection and analysis. [Results]A total of 123 water samples were tested,96 samples were qualified with the qualified rate of 78.05%. The qualified rate of municipal centralized water supply,township centralized water supply,school self-built water supply,secondary water supply and fresh-purified drinkingwater was 66.66%,68.18%,63.64%,88.24% and92.00%,respectively. The statistical analysis results showed that there was no statistically significant difference in qualified rate between municipal centralized water supply and township centralized water supply（χ^2 =0.007 9,P〉0.05）,and the statistically significant difference between centralized water supply and secondary water supply was found（χ^2 =5.18,P〈0.05）,while the difference in qualified rate between centralized water supply and fresh-purified drinkingwater was statistically significant（χ^2=5.78,P〈0.05）. The unqualified indicators included fluoride,p H value,disinfectant allowance,total bacterial count,turbidity and visible matter.[Conclusion]The test results indicate that the drinking water quality in Langfang City is not optimistic. It is necessary to strengthen the water improvement to reduce fluoride,enhance supervision and guidance of drinking water safety project,and strengthen water quality monitoring,to improve the quality of drinking water.
出处
《职业与健康》
CAS
2017年第9期1257-1260,共4页
Occupation and Health
基金
廊坊市科技局立项课题(2016023096)
关键词
生活饮用水
水质抽检
卫生现状
Drinking water
Water quality sampling and detection
Hygienic status
