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目的了解北京市怀柔区农村集中式供水水质卫生状况,为农村改水提供依据,以保障人民群众日常饮水安全。方法在辖区建立59个农村集中式供水水质监测点,对监测点消毒情况及水源类型进行调查,并在枯、丰水期采集出厂水、末梢水各1件,全年共检测水样236件。结果 2011年农村集中式供水236件水样合格率71.6%。枯水期与丰水期比较,差异有统计学意义(χ2=25.53,P<0.01)。总大肠菌群、耐热大肠菌群和菌落总数超标率分别为24.6%、21.2%和19.9%。结论怀柔区农村集中式供水微生物指标超标现象严重,今后应加强集中式供水管网配套设施的安装,针对不合格指标提出具体的改进措施,改善农村集中式供水水质卫生状况,以保障人们身体健康。
Objective To understand the sanitary conditions of rural centralized water supply in Huairou District of Beijing and provide the basis for rural water improvement so as to ensure the daily drinking water safety of the people. Methods 59 rural centralized water quality monitoring points were set up in the area to investigate the disinfection situation and water source type of the monitoring points. During the dry and wet periods, 1 water sample and 1 peripheral water were collected. A total of 236 water samples were collected . Results In 2011, the water quality of 236 centralized water supply in rural areas was 71.6%. Dry season and wet period, the difference was statistically significant (χ2 = 25.53, P <0.01). Total coliform bacteria, heat-resistant coliform bacteria and the total number of colonies overweight rates were 24.6%, 21.2% and 19.9%. Conclusions The indicators of over-standard microbial concentration in rural centralized water supply in Huairou District are serious. In the future, the installation of supporting facilities for centralized water supply network should be strengthened. Specific improvement measures should be put forward according to the unqualified indicators so as to improve the sanitary condition of centralized water supply in rural areas so as to ensure people’s health .